REVIEW 3 major objections 5 minor 108 references
Central-star extinctions towards planetary nebulae
T0 review · 3 major / 5 minor · reviewed 2026-08-04 · deepseek-v4-flash
Pith's one-line read This paper shows that the reddening of planetary nebulae can be measured directly from the spectral energy distribution of their hot central stars, yielding distance-independent extinctions as precise as 0.02 magnitudes that match interstel
desk verdict A solid, externally validated extinction catalog for 162 PNe; the fixed 100 kK template and self-calibrated errors are real caveats but not deal-breakers. read the letter →
The pith
A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.
The reading
What carries the argument
The central object is a standard spectral template: a single non-LTE TMAP stellar atmosphere model at T=100,000 K, log g=6, H=0.9, He=0.1, which the paper shows approximates any hydrogen-rich central star above ~60,000 K to within ~0.2 mag across the far-UV to near-IR filter set. The method reddens this template with the Fitzpatrick (1999) extinction law at R_V=3.1, convolves it with the survey filter curves, and fits the observed broadband SED by Nelder-Mead chi-squared minimization; uncertainties come from MCMC plus refitting with 60 kK and 150 kK templates. This template assumption converts the problem of measuring extinction to a one-parameter colour fit that is independent of distance a
What would settle it
A resolved spectroscopic map of the Balmer decrement across NGC 6781 would test the circumnebular-dust claim: if the extra extinction seen toward the central star is not present toward the nebular gas, or if sub-mm imaging shows no dust torus at the position of the star, the attribution to internal dust fails. More generally, for any line of sight where this paper and a 3D dust map disagree by more than 0.2 in E(B−V), a simultaneous fit of temperature and extinction to UV spectroscopy of the central star would reveal whether the 100,000 K template assumption produced the offset.
Extended reading notes
Core claim
The paper's central claim is that a single reddened model-atmosphere template reproduces the observed broadband spectral energy distributions of hot planetary-nebula central stars well enough to extract line-of-sight extinction with an accuracy of order ±0.02 mag in E(B−V). Because the template — a 100,000 K, log g=6, hydrogen-rich TMAP model — is a good representation for any central star hotter than about 60,000 K, a one-parameter fit over the full 1500 Å–1 µm SED yields extinction determinations that are independent of distance and do not rely on nebular line fluxes. Applied to a complete sample of 262 large planetary nebulae, the fit succeeds for 162 objects, and the resulting extinction
Load-bearing premise
The method assumes every bright central star has the same intrinsic spectrum — a 100,000 K, hydrogen-rich model atmosphere — so any star cooler than about 60,000 K, or whose light is contaminated by a companion or nebular emission, gets a biased extinction, and the same bias feeds the NGC 6781 circumnebular detection.
Editorial extensions
If this is right
- A homogeneous, distance-independent catalogue of E(B−V) for 162 large planetary nebulae, with the highest-quality fits reaching ±0.02 mag precision.
- The strong correlation with independent 3D dust maps implies that any circumnebular dust is small for most evolved nebulae, so the new extinctions can be used directly for luminosity and abundance corrections.
- The NGC 6781 excess demonstrates that internal extinction can still matter in a 0.26 pc nebula; the PNLF cut-off can be explained if the internal dust covers only part of the nebula.
- Composite SEDs reveal four new close binaries and set the binary fraction in the complete sample at 23–36%, consistent with field star multiplicities.
- Three stars previously proposed as post-RGB are consistent with post-AGB evolution once temperature uncertainties are considered.
Reading between the lines
- The same fitting machinery, applied with a fainter photometric limit or with high-resolution imaging to subtract nebular contamination, could extend distance-independent extinction measurements to the more compact nebulae that dominate the PNLF bright end.
- Treating T_eff as a free parameter when far-UV photometry is available would remove the template bias for cooler central stars and would test whether the ~0.02 mag temperature-induced uncertainty is really as small as claimed.
- The claimed interstellar-dominance result is vulnerable to R_V variations; refitting with a free R_V, or using the paper's own F99-vs-CCM89 comparison as a lever, could turn the extinction catalogue into a probe of dust-law variations along different sight lines.
- The NGC 6781 result implies that toroidal or clumpy internal dust can be missed by line-of-sight averages; resolved far-IR or sub-mm imaging of that object would directly test the geometry implied by the PNLF models.
Editorial analysis
A structured set of objections, weighed in public.
Referee Report
Summary. The paper derives line-of-sight extinctions E(B-V) for 162 large-angular-size planetary nebulae by fitting a fixed 100 kK TMAP stellar atmosphere model, reddened with the F99 extinction law (R_V=3.1), to photometric SEDs built with PySSED. The fitting uses Nelder-Mead chi-squared minimization with MCMC-based uncertainties, including an explicit uncertainty floor calibrated to force reduced chi-squared near unity and an additional component from refitting at 60 kK and 150 kK templates. The resulting extinctions are compared with the independent G-Tomo 3D dust map and the FPJ16 compilation, showing correlations of 0.85 and 0.94 and slopes near unity. The paper also updates CSPN identification grades, derives temperature-corrected luminosities for 49 stars, identifies four new candidate close binaries, discusses three post-RGB candidates, and reports evidence for circumnebular extinction toward NGC 6781 with a discussion of its implication for the PNLF.
Significance. If the results hold, this is a valuable homogeneous extinction catalog for a complete sample of extended PNe, independent of distance and with per-object uncertainties down to about 0.02 mag. The agreement with G-Tomo and FPJ16 is a genuine strength: it partly compensates for the simplifications in the SED modeling. The paper is also useful for its updated CSPN grades, temperature compilation, and binary candidates. However, the central precision claim and the NGC 6781 detection rest on the universality of the 100 kK template and on the uncertainty-floor calibration, so the catalog's systematic error budget needs explicit validation before the quoted accuracies can be taken at face value.
major comments (3)
- [Sec. 3.2, Sec. 4.1, Table 5] The A-grade criterion (Sec. 4.1) requires the SED to be consistent with the 100 kK TMAP template, and the same template is then used to fit E(B-V) (Sec. 3.2). This creates a selection–fit coupling. The 60/150 kK tests give a typical shift of 0.02 mag, but this is an aggregate estimate. For a star actually at 40–60 kK or with a modest cool-companion contribution, the bias can exceed the quoted uncertainty, especially when GALEX/UV photometry is present (Fig. 1). The manuscript should perform a per-object check using the literature temperatures compiled in Table 5: refit each star with its tabulated T_eff and report the distribution of ΔE(B-V) relative to the quoted uncertainties. This would directly support or bound the accuracy claim and the NGC 6781 residual, which inherits the template assumption.
- [Sec. 3.3.1] The uncertainty floor is scaled so that the final MCMC fit has reduced chi-squared close to unity. This makes the reported error bars partly a function of the model rather than an independent measurement of the data scatter. While the paper states that the uncertainties are not formal 1-sigma, the abstract-level claim of precision down to 0.02 mag relies on these error bars. The external correlations with G-Tomo and FPJ16 provide overall validation but do not validate per-object uncertainties. Please report the un-scaled 5%-floor uncertainties for each object alongside the adopted ones, and add an explicit systematic-error term (template, R_V, zero-points) in the catalog table or discussion.
- [Sec. 2.1, Sec. 3.3] The extinction law is fixed to F99 with R_V=3.1, and the acknowledged Galactic variation R_V=3.0–3.5 (Lallement et al. 2024) is not propagated into E(B-V). At low extinction a 0.1 change in R_V can shift E(B-V) at a level comparable to the quoted 0.02 mag precision, depending on the wavelength coverage. Please quantify this sensitivity by refitting a representative subset with R_V=3.0 and 3.5 and either add the resulting systematic to the uncertainties or justify why it is negligible for the sample's wavelength baseline.
minor comments (5)
- [Sec. 1 / Abstract] The phrase 'extinctions accurate down to E(B-V) of ±0.02 mag' is used in the abstract and conclusions; consider adding 'for the best-constrained SEDs' to avoid over-generalizing to all 162 objects.
- [Sec. 3.3 heading] The heading 'SSED extinction determination' appears to be a typo for 'SED'.
- [Fig. A1 caption] The caption says 'We 1-3 Binary Fit' but the table lists the object as We 3-1; please correct.
- [Acknowledgements] Typographical errors: 'grar=nts' and 'aacknowledges' should be corrected.
- [Sec. 5.3.3] The sentence 'The GALEX image in the HASH database shows only the southern part of the nebula' would benefit from giving the GALEX wavelength (FUV or NUV) and a reference to the image, since the spatial filter response is relevant to the extinction-screen argument.
Circularity Check
A-grade sample selection uses G-Tomo/FPJ16 agreement as a grading criterion, so the later agreement used to validate the extinctions is partly self-fulfilling.
-
self definitional
[Sec. 4.1 (CSPN candidate evaluation) and Sec. 5.1.1 / Figs. 4–5 (comparison to G-Tomo and FPJ16)]
"We therefore also consider a range of auxiliary criteria, which include: the derived E(B−V) compared to other extinction indicators for the nebula, primarily those from G-Tomo and FPJ16 ... An example is the PN Abell 5, where we find a central star which requires a high extinction if it is a hot star, while the Balmer decrement and G-Tomo both indicate a much lower extinction."
The A/A+ grade defines the sample used for the validation plots (Figs. 4–5; Table 3). Section 4.1 explicitly lists agreement of the fitted E(B−V) with G-Tomo and FPJ16 as a primary auxiliary grading criterion, and Sec. 6.1 shows a candidate rejected for exactly this reason (Abell 5). Thus the later 'good agreement' between the PySSED extinctions and G-Tomo/FPJ16 is partly guaranteed by sample selection rather than being an independent external check. The per-object extinction values are not fit to those maps, so the catalog itself is not circular, but the central conclusion that the extinction is dominated by interstellar dust is supported by a comparison whose sample has been pre-selected using that same comparison.
full rationale
The fitted E(B−V) values themselves are derived from a fixed 100 kK TMAP template plus the F99 extinction law and are not directly fit to G-Tomo or FPJ16; in that respect the extinction catalog is self-contained and the agreement with external maps is real evidence. However, the validation protocol contains one circular element. In Sec. 4.1 the A/A+ grade—the sample used for all comparison plots—is assigned using auxiliary criteria that explicitly include 'the derived E(B−V) compared to other extinction indicators for the nebula, primarily those from G-Tomo and FPJ16.' The Abell 5 discussion in Sec. 6.1 confirms that a hot-star identification was rejected because its fitted extinction disagreed with G-Tomo and the Balmer decrement. Therefore the correlations in Figs. 4–5 and the conclusion that the extinctions agree with interstellar extinction are partly produced by the selection itself, rather than being an independent test. I do not find other circularity: the temperature-template uncertainty is propagated by refits at 60 and 150 kK; the NGC 6781 circumnebular excess is a residual between the SED fit and G-Tomo, not a fitted parameter; the binary identifications rest on UV/optical SED morphology; cited self-tools (PySSED, Gesicki et al. 2018 scaling) are not load-bearing uniqueness claims. Score 6 reflects that the central validation claim is partly self-definitional, though the extinction catalog retains independent content.
Assumptions & free parameters
free parameters (2)
- Uncertainty floor scaling factor =
per-object adjusted via 1/sqrt(naive reduced chi2)
- GALEX bright-flux mask threshold =
F > 10^-2.25 Jy excluded
assumptions (4)
- domain assumption A single TMAP model (T=100 kK, log g=6, H=0.9, He=0.1) represents the intrinsic SED of all CSPN with T>60 kK over 1000-10000 A.
- domain assumption The F99 extinction law with R_V=3.1 is valid for all lines of sight in the sample.
- domain assumption For the large angular diameter PNe in the sample, nebular contamination and circumnebular extinction are negligible for the central-star SED below 1 micron, except where specifically identified.
- domain assumption G-Tomo 3D dust map extinctions at the adopted PN distances are reliable interstellar extinction estimates.
Cite this review
Pith. "Pith review of Central-star extinctions towards planetary nebulae." pith.science (2026). https://pith.science/paper/M6764MBM
@misc{pith2026250910621,
author = {Pith},
title = {Pith review of: Central-star extinctions towards planetary nebulae},
year = {2026},
howpublished = {\url{https://pith.science/paper/M6764MBM}},
note = {Machine review of arXiv:2509.10621}
}
abstract
Planetary nebulae trace the hottest and most luminous phase of evolution of solar-type stars. We use these hot, bright stars to investigate extinctions towards a complete sample of 262 confirmed PNe with large angular diameters, which have the most reliable photometry and hottest central stars. For 162 of these PNe, we identify central stars, produce spectral energy distributions from survey data using PySSED, then fit reddened model spectra to the observed photometry to obtain extinctions accurate down to $E(B-V)$ of $\pm 0.02$ mag. The fitting is performed by Nelder-Mead $\chi^2$ minimisation, with uncertainties evaluated through MCMC. The catalogue of stellar temperatures is updated for our sample for the calculation of luminosities. The extinctions agree well with interstellar extinction. We find evidence of circumnebular extinction for one PN, and evaluate its effect on the planetary nebulae luminosity function. Four new close binaries are identified from the spectral energy distributions. The binary fraction in the full sample is between 23% and 36%. We use our compiled data to evaluate the quality of the central star identifications in the literature. Three objects in our sample have previously been classified as post-RGB systems but we find that their parameters may also be consistent with post-AGB evolution.
Figures
Figures from the paper (6 more)
Reference graph
Works this paper leans on
-
[1]
write newline
" write newline "" before.all 'output.state := FUNCTION fin.entry write newline FUNCTION new.block output.state before.all = 'skip after.block 'output.state := if FUNCTION new.sentence output.state after.block = 'skip output.state before.all = 'skip after.sentence 'output.state := if if FUNCTION not #0 #1 if FUNCTION and 'skip pop #0 if FUNCTION or pop #1...
-
[2]
Parts I, II
Acker A., Marcout J., Ochsenbein F., Stenholm B., Tylenda R., Schohn C., 1992, The Strasbourg-ESO Catalogue of Galactic Planetary Nebulae. Parts I, II
1992
-
[3]
Adamczak J., Werner K., Rauch T., Schuh S., Drake J. J., Kruk J. W., 2012, @doi [ ] 10.1051/0004-6361/201219718 , https://ui.adsabs.harvard.edu/abs/2012A&A...546A...1A 546, A1
-
[4]
Af s ar M., Ibano g lu C., 2008, @doi [ ] 10.1111/j.1365-2966.2008.13927.x , https://ui.adsabs.harvard.edu/abs/2008MNRAS.391..802A 391, 802
arXiv 2008
-
[5]
Ahumada J. A., Weidmann W. A., Miller Bertolami M. M., Saker L., 2019, @doi [ ] 10.3847/1538-4357/ab3797 , https://ui.adsabs.harvard.edu/abs/2019ApJ...882..171A 882, 171
-
[6]
Ali A., 1999, @doi [ ] 10.1016/S1384-1076(99)00003-2 , https://ui.adsabs.harvard.edu/abs/1999NewA....4...95A 4, 95
-
[7]
Ali A., Amer M. A., Dopita M. A., Vogt F. P. A., Basurah H. M., 2015, @doi [ ] 10.1051/0004-6361/201526223 , https://ui.adsabs.harvard.edu/abs/2015A&A...583A..83A 583, A83
-
[8]
Aller L. H., Keyes C. D., 1987, @doi [ ] 10.1086/191230 , https://ui.adsabs.harvard.edu/abs/1987ApJS...65..405A 65, 405
Show all 108 references
-
[9]
F., Olgu \' n L., V \'a zquez R., Guill \'e n P
Aller A., Miranda L. F., Olgu \' n L., V \'a zquez R., Guill \'e n P. F., Oreiro R., Ulla A., Solano E., 2015, @doi [ ] 10.1093/mnras/stu2106 , https://ui.adsabs.harvard.edu/abs/2015MNRAS.446..317A 446, 317
2015 doi
-
[10]
F., Ressler M
Aller A., V \'a zquez R., Olgu \' n L., Miranda L. F., Ressler M. E., 2021, @doi [ ] 10.1093/mnras/stab1233 , https://ui.adsabs.harvard.edu/abs/2021MNRAS.504.4806A 504, 4806
2021 doi
-
[11]
Bailer-Jones C. A. L., Rybizki J., Fouesneau M., Demleitner M., Andrae R., 2021, @doi [ ] 10.3847/1538-3881/abd806 , https://ui.adsabs.harvard.edu/abs/2021AJ....161..147B 161, 147
2021 doi
-
[12]
S., 2018, @doi [ ] 10.1051/0004-6361/201833981 , https://ui.adsabs.harvard.edu/abs/2018A&A...620A..84B 620, A84
Barr \' a D., Kimeswenger S., Kausch W., Goldman D. S., 2018, @doi [ ] 10.1051/0004-6361/201833981 , https://ui.adsabs.harvard.edu/abs/2018A&A...620A..84B 620, A84
2018 doi
-
[13]
E., Pierfedereci F., Teuben P., eds, Astronomical Society of the Pacific Conference Series Vol
Baumann M., Boch T., Pineau F.-X., Fernique P., Bot C., Allen M., 2022, in Ruiz J. E., Pierfedereci F., Teuben P., eds, Astronomical Society of the Pacific Conference Series Vol. 532, Astronomical Data Analysis Software and Systems XXX. p. 7
2022
-
[14]
Boffin H. M. J., Jones D., 2019, The Importance of Binaries in the Formation and Evolution of Planetary Nebulae , @doi 10.1007/978-3-030-25059-1
2019 doi
-
[15]
Bohigas J., 2001, , https://ui.adsabs.harvard.edu/abs/2001RMxAA..37..237B 37, 237
2001
-
[16]
Bohigas J., 2003, , https://ui.adsabs.harvard.edu/abs/2003RMxAA..39..149B 39, 149
2003
-
[17]
Bohigas J., 2008, @doi [ ] 10.1086/524977 , https://ui.adsabs.harvard.edu/abs/2008ApJ...674..954B 674, 954
2008 doi
-
[18]
E., Werner K., Jacoby G
Bond H. E., Werner K., Jacoby G. H., Zeimann G. R., 2023, @doi [ ] 10.1093/mnras/stad524 , https://ui.adsabs.harvard.edu/abs/2023MNRAS.521..668B 521, 668
2023 doi
-
[19]
J., Harrington J
Borkowski K. J., Harrington J. P., Blair W. P., Bregman J. D., 1994, @doi [ ] 10.1086/174849 , https://ui.adsabs.harvard.edu/abs/1994ApJ...435..722B 435, 722
1994 doi
-
[21]
H., Kaler J
Cahn J. H., Kaler J. B., Stanghellini L., 1992, , https://ui.adsabs.harvard.edu/abs/1992A&AS...94..399C 94, 399
1992
-
[22]
A., Clayton G
Cardelli J. A., Clayton G. C., Mathis J. S., 1989, @doi [ ] 10.1086/167900 , https://ui.adsabs.harvard.edu/abs/1989ApJ...345..245C 345, 245
1989 doi
-
[23]
Chen P., Fang X., Chen X., Liu J., 2025, @doi [ ] 10.3847/1538-4357/ada94a , https://ui.adsabs.harvard.edu/abs/2025ApJ...980..227C 980, 227
2025 doi
-
[24]
A., 2021, @doi [ ] 10.1051/0004-6361/202142008 , https://ui.adsabs.harvard.edu/abs/2021A&A...656A.110C 656, A110
Chornay N., Walton N. A., 2021, @doi [ ] 10.1051/0004-6361/202142008 , https://ui.adsabs.harvard.edu/abs/2021A&A...656A.110C 656, A110
2021 doi
-
[25]
J., Kaplan D
Condon J. J., Kaplan D. L., 1998, @doi [ ] 10.1086/313128 , https://ui.adsabs.harvard.edu/abs/1998ApJS..117..361C 117, 361
1998 doi
-
[26]
Costa R. D. D., Uchida M. M. M., Maciel W. J., 2004, @doi [ ] 10.1051/0004-6361:20034539 , https://ui.adsabs.harvard.edu/abs/2004A&A...423..199C 423, 199
2004 doi
-
[27]
J., Moe M., Jacoby G
De Marco O., Passy J.-C., Frew D. J., Moe M., Jacoby G. H., 2013, @doi [ ] 10.1093/mnras/sts180 , https://ui.adsabs.harvard.edu/abs/2013MNRAS.428.2118D 428, 2118
2013 doi
-
[28]
H., Hillwig T., Kronberger M., Howell S
De Marco O., Long J., Jacoby G. H., Hillwig T., Kronberger M., Howell S. B., Reindl N., Margheim S., 2015, @doi [ ] 10.1093/mnras/stv249 , https://ui.adsabs.harvard.edu/abs/2015MNRAS.448.3587D 448, 3587
2015 doi
-
[29]
Delgado Inglada G., Rodr \' guez M., Mampaso A., Viironen K., 2009, @doi [ ] 10.1088/0004-637X/694/2/1335 , https://ui.adsabs.harvard.edu/abs/2009ApJ...694.1335D 694, 1335
2009 doi
-
[30]
Douchin D., et al., 2015, @doi [ ] 10.1093/mnras/stu2700 , https://ui.adsabs.harvard.edu/abs/2015MNRAS.448.3132D 448, 3132
2015 doi
-
[31]
Dreizler S., 1999, Reviews in Modern Astronomy, https://ui.adsabs.harvard.edu/abs/1999RvMA...12..255D 12, 255
1999
-
[32]
J., Lamers H
Dreizler S., Werner K., Heber U., 1997, in Habing H. J., Lamers H. J. G. L. M., eds, IAU Symposium Vol. 180, Planetary Nebulae. p. 103
1997
-
[33]
S., 1985, @doi [ ] 10.1086/184519 , https://ui.adsabs.harvard.edu/abs/1985ApJ...294L.107D 294, L107
Drilling J. S., 1985, @doi [ ] 10.1086/184519 , https://ui.adsabs.harvard.edu/abs/1985ApJ...294L.107D 294, L107
1985 doi
-
[34]
Emprechtinger M., Forveille T., Kimeswenger S., 2004, @doi [ ] 10.1051/0004-6361:20040290 , https://ui.adsabs.harvard.edu/abs/2004A&A...423.1017E 423, 1017
2004 doi
-
[35]
L., 1999, @doi [ ] 10.1086/316293 , https://ui.adsabs.harvard.edu/abs/1999PASP..111...63F 111, 63
Fitzpatrick E. L., 1999, @doi [ ] 10.1086/316293 , https://ui.adsabs.harvard.edu/abs/1999PASP..111...63F 111, 63
1999 doi
-
[36]
Foreman-Mackey D., et al., 2013, emcee: The MCMC Hammer , Astrophysics Source Code Library, record ascl:1303.002
2013
-
[37]
J., 2008, PhD thesis, Macquarie University, Department of Physics and Astronomy
Frew D. J., 2008, PhD thesis, Macquarie University, Department of Physics and Astronomy
2008
-
[38]
J., Parker Q
Frew D. J., Parker Q. A., Russeil D., 2006, @doi [ ] 10.1111/j.1365-2966.2006.10898.x , https://ui.adsabs.harvard.edu/abs/2006MNRAS.372.1081F 372, 1081
2006
-
[39]
J., et al., 2011, @doi [ ] 10.1071/AS10017 , https://ui.adsabs.harvard.edu/abs/2011PASA...28...83F 28, 83
Frew D. J., et al., 2011, @doi [ ] 10.1071/AS10017 , https://ui.adsabs.harvard.edu/abs/2011PASA...28...83F 28, 83
2011 doi
-
[40]
J., Boji c i \'c I
Frew D. J., Boji c i \'c I. S., Parker Q. A., 2013, @doi [ ] 10.1093/mnras/sts393 , https://ui.adsabs.harvard.edu/abs/2013MNRAS.431....2F 431, 2
2013 doi
-
[41]
J., Parker Q
Frew D. J., Parker Q. A., Boji c i \'c I. S., 2016, @doi [ ] 10.1093/mnras/stv1516 , https://ui.adsabs.harvard.edu/abs/2016MNRAS.455.1459F 455, 1459
2016 doi
-
[42]
A., Miller Bertolami M
Gesicki K., Zijlstra A. A., Miller Bertolami M. M., 2018, @doi [Nature Astronomy] 10.1038/s41550-018-0453-9 , https://ui.adsabs.harvard.edu/abs/2018NatAs...2..580G 2, 580
2018 doi
-
[43]
A., Bianchi L., Manchado A., 2023, @doi [ ] 10.3847/1538-4365/acca77 , https://ui.adsabs.harvard.edu/abs/2023ApJS..266...34G 266, 34
G \'o mez-Mu \ n oz M. A., Bianchi L., Manchado A., 2023, @doi [ ] 10.3847/1538-4365/acca77 , https://ui.adsabs.harvard.edu/abs/2023ApJS..266...34G 266, 34
2023 doi
-
[44]
Gonz \'a lez-Santamar \' a I., Manteiga M., Manchado A., Ulla A., Dafonte C., L \'o pez Varela P., 2021, @doi [ ] 10.1051/0004-6361/202141916 , https://ui.adsabs.harvard.edu/abs/2021A&A...656A..51G 656, A51
2021 doi
-
[45]
Gordon K., 2024, @doi [The Journal of Open Source Software] 10.21105/joss.07023 , https://ui.adsabs.harvard.edu/abs/2024JOSS....9.7023G 9, 7023
2024 doi
-
[46]
Henry R. B. C., Kwitter K. B., Dufour R. J., 1999, @doi [ ] 10.1086/307215 , https://ui.adsabs.harvard.edu/abs/1999ApJ...517..782H 517, 782
1999 doi
-
[47]
E., Bianchi L., 2004a, @doi [ ] 10.1086/386380 , https://ui.adsabs.harvard.edu/abs/2004PASP..116..391H 116, 391
Herald J. E., Bianchi L., 2004a, @doi [ ] 10.1086/386380 , https://ui.adsabs.harvard.edu/abs/2004PASP..116..391H 116, 391
-
[48]
E., Bianchi L., 2004b, @doi [ ] 10.1086/421010 , https://ui.adsabs.harvard.edu/abs/2004ApJ...609..378H 609, 378
Herald J. E., Bianchi L., 2004b, @doi [ ] 10.1086/421010 , https://ui.adsabs.harvard.edu/abs/2004ApJ...609..378H 609, 378
-
[49]
H., Manchado A., 1990, @doi [ ] 10.1007/BF00640708 , https://ui.adsabs.harvard.edu/abs/1990Ap&SS.169..183H 169, 183
Herrero A., M \'e ndez R. H., Manchado A., 1990, @doi [ ] 10.1007/BF00640708 , https://ui.adsabs.harvard.edu/abs/1990Ap&SS.169..183H 169, 183
1990 doi
-
[50]
C., Frew D
Hillwig T. C., Frew D. J., Louie M., De Marco O., Bond H. E., Jones D., Schaub S. C., 2015, @doi [ ] 10.1088/0004-6256/150/1/30 , https://ui.adsabs.harvard.edu/abs/2015AJ....150...30H 150, 30
2015 doi
-
[51]
C., Frew D
Hillwig T. C., Frew D. J., Reindl N., Rotter H., Webb A., Margheim S., 2017, @doi [ ] 10.3847/1538-3881/153/1/24 , https://ui.adsabs.harvard.edu/abs/2017AJ....153...24H 153, 24
2017 doi
-
[52]
D., 1983, @doi [ ] 10.1093/mnras/203.2.301 , https://ui.adsabs.harvard.edu/abs/1983MNRAS.203..301H 203, 301
Howarth I. D., 1983, @doi [ ] 10.1093/mnras/203.2.301 , https://ui.adsabs.harvard.edu/abs/1983MNRAS.203..301H 203, 301
1983 doi
-
[53]
H., Ciardullo R., 2025, @doi [ ] 10.3847/1538-4357/adc0fb , https://ui.adsabs.harvard.edu/abs/2025ApJ...983..129J 983, 129
Jacoby G. H., Ciardullo R., 2025, @doi [ ] 10.3847/1538-4357/adc0fb , https://ui.adsabs.harvard.edu/abs/2025ApJ...983..129J 983, 129
2025 doi
-
[54]
H., Ferland G
Jacoby G. H., Ferland G. J., Korista K. T., 2001, @doi [ ] 10.1086/322489 , https://ui.adsabs.harvard.edu/abs/2001ApJ...560..272J 560, 272
2001 doi
-
[55]
Jones D., Boffin H. M. J., 2017, @doi [Nature Astronomy] 10.1038/s41550-017-0117 , https://ui.adsabs.harvard.edu/abs/2017NatAs...1E.117J 1, 0117
2017 doi
-
[57]
Jones D., Boffin H. M. J., Miszalski B., Wesson R., Corradi R. L. M., Tyndall A. A., 2014b, @doi [ ] 10.1051/0004-6361/201322797 , https://ui.adsabs.harvard.edu/abs/2014A&A...562A..89J 562, A89
-
[58]
C., Reindl N., 2023, in Manteiga M., Bellot L., Benavidez P., de Lorenzo-C \'a ceres A., Fuente M
Jones D., Hillwig T. C., Reindl N., 2023, in Manteiga M., Bellot L., Benavidez P., de Lorenzo-C \'a ceres A., Fuente M. A., Mart \' nez M. J., V \'a zquez Acosta M., Dafonte C., eds, Highlights on Spanish Astrophysics XI. p. 216 ( @eprint arXiv 2304.06355 ), @doi 10.48550/arXi...
-
[59]
B., 1983, @doi [ ] 10.1086/161188 , https://ui.adsabs.harvard.edu/abs/1983ApJ...271..188K 271, 188
Kaler J. B., 1983, @doi [ ] 10.1086/161188 , https://ui.adsabs.harvard.edu/abs/1983ApJ...271..188K 271, 188
1983 doi
-
[60]
R., Bianchi L., Maciel W
Keller G. R., Bianchi L., Maciel W. J., 2014, @doi [ ] 10.1093/mnras/stu878 , https://ui.adsabs.harvard.edu/abs/2014MNRAS.442.1379K 442, 1379
2014 doi
-
[61]
L., Barlow M
Kingsburgh R. L., Barlow M. J., 1994, @doi [ ] 10.1093/mnras/271.2.257 , https://ui.adsabs.harvard.edu/abs/1994MNRAS.271..257K 271, 257
1994 doi
-
[62]
W., Werner K., 1998, @doi [ ] 10.1086/305940 , https://ui.adsabs.harvard.edu/abs/1998ApJ...502..858K 502, 858
Kruk J. W., Werner K., 1998, @doi [ ] 10.1086/305940 , https://ui.adsabs.harvard.edu/abs/1998ApJ...502..858K 502, 858
1998 doi
-
[63]
B., Henry R
Kwitter K. B., Henry R. B. C., 2022, @doi [ ] 10.1088/1538-3873/ac32b1 , https://ui.adsabs.harvard.edu/abs/2022PASP..134b2001K 134, 022001
2022 doi
-
[64]
L., Babusiaux C., Cox N
Lallement R., Vergely J. L., Babusiaux C., Cox N. L. J., 2022, @doi [ ] 10.1051/0004-6361/202142846 , https://ui.adsabs.harvard.edu/abs/2022A&A...661A.147L 661, A147
2022 doi
-
[65]
L., Cox N
Lallement R., Vergely J. L., Cox N. L. J., 2024, @doi [ ] 10.1051/0004-6361/202451657 , https://ui.adsabs.harvard.edu/abs/2024A&A...691A..41L 691, A41
2024 doi
-
[66]
R., 1993, , https://ui.adsabs.harvard.edu/abs/1993AcA....43..329L 43, 329
Leuenhagen U., Koesterke L., Hamann W. R., 1993, , https://ui.adsabs.harvard.edu/abs/1993AcA....43..329L 43, 329
1993
-
[67]
W., Napiwotzki R., Fulbright M
Liebert J., Tweedy R. W., Napiwotzki R., Fulbright M. S., 1995, @doi [ ] 10.1086/175366 , https://ui.adsabs.harvard.edu/abs/1995ApJ...441..424L 441, 424
1995 doi
-
[68]
V., 2001, @doi [ ] 10.1051/0004-6361:20010752 , https://ui.adsabs.harvard.edu/abs/2001A&A...374..280M 374, 280
Mavromatakis F., Papamastorakis J., Paleologou E. V., 2001, @doi [ ] 10.1051/0004-6361:20010752 , https://ui.adsabs.harvard.edu/abs/2001A&A...374..280M 374, 280
2001 doi
-
[69]
A., Cox N
McDonald I., Zijlstra A. A., Cox N. L. J., Alexander E. L., Csukai A., Ramkumar R., Hollings A., 2024, @doi [RAS Techniques and Instruments] 10.1093/rasti/rzae005 , https://ui.adsabs.harvard.edu/abs/2024RASTI...3...89M 3, 89
2024 doi
-
[70]
McDonald I., et al., 2025, @doi [ ] 10.1093/mnras/staf978 , https://ui.adsabs.harvard.edu/abs/2025MNRAS.tmp..943M
2025 doi
-
[71]
Merc J., et al., 2021, @doi [ ] 10.1093/mnras/stab2034 , https://ui.adsabs.harvard.edu/abs/2021MNRAS.506.4151M 506, 4151
2021 doi
-
[72]
B., Kwitter K
Milingo J. B., Kwitter K. B., Henry R. B. C., Souza S. P., 2010, @doi [ ] 10.1088/0004-637X/711/2/619 , https://ui.adsabs.harvard.edu/abs/2010ApJ...711..619M 711, 619
2010 doi
-
[73]
M., 2016, @doi [ ] 10.1051/0004-6361/201526577 , https://ui.adsabs.harvard.edu/abs/2016A&A...588A..25M 588, A25
Miller Bertolami M. M., 2016, @doi [ ] 10.1051/0004-6361/201526577 , https://ui.adsabs.harvard.edu/abs/2016A&A...588A..25M 588, A25
2016 doi
- [74]
-
[75]
M., 2016, @doi [ ] 10.1017/pasa.2016.16 , https://ui.adsabs.harvard.edu/abs/2016PASA...33...24N 33, e024
Nataf D. M., 2016, @doi [ ] 10.1017/pasa.2016.16 , https://ui.adsabs.harvard.edu/abs/2016PASA...33...24N 33, e024
2016 doi
- [76]
-
[77]
A., 2014, @doi [ ] 10.1051/0004-6361/201323205 , https://ui.adsabs.harvard.edu/abs/2014A&A...565A..87O 565, A87
\"O ttl S., Kimeswenger S., Zijlstra A. A., 2014, @doi [ ] 10.1051/0004-6361/201323205 , https://ui.adsabs.harvard.edu/abs/2014A&A...565A..87O 565, A87
2014 doi
-
[78]
A., Boji c i \'c I
Parker Q. A., Boji c i \'c I. S., Frew D. J., 2016, in Journal of Physics Conference Series. IOP, p. 032008 ( @eprint arXiv 1603.07042 ), @doi 10.1088/1742-6596/728/3/032008
2016 arXiv
-
[79]
P., Cuesta L., Kemp S
Phillips J. P., Cuesta L., Kemp S. N., 2005, @doi [ ] 10.1111/j.1365-2966.2005.08664.x , https://ui.adsabs.harvard.edu/abs/2005MNRAS.357..548P 357, 548
2005
-
[80]
J., Frew D
Pierce M. J., Frew D. J., Parker Q. A., K \"o ppen J., 2004, @doi [ ] 10.1071/AS04039 , https://ui.adsabs.harvard.edu/abs/2004PASA...21..334P 21, 334
2004 doi
-
[81]
R., 1984, Planetary nebulae
Pottasch S. R., 1984, Planetary nebulae. A study of late stages of stellar evolution . Astrophysics and Space Science Library Vol. 107, @doi 10.1007/978-94-009-7233-9,
1984 doi
-
[82]
R., 1996, , https://ui.adsabs.harvard.edu/abs/1996A&A...307..561P 307, 561
Pottasch S. R., 1996, , https://ui.adsabs.harvard.edu/abs/1996A&A...307..561P 307, 561
1996
-
[83]
R., Bernard-Salas J., 2013, @doi [ ] 10.1051/0004-6361/201219647 , https://ui.adsabs.harvard.edu/abs/2013A&A...550A..35P 550, A35
Pottasch S. R., Bernard-Salas J., 2013, @doi [ ] 10.1051/0004-6361/201219647 , https://ui.adsabs.harvard.edu/abs/2013A&A...550A..35P 550, A35
2013 doi
-
[84]
Rauch T., 2010, TheoSSA TMAP Web Interface, VO resource provided by the GAVO Data Center, https://dc.g-vo.org/theossa/q/web/info
2010
-
[85]
L., 2003, in Hubeny I., Mihalas D., Werner K., eds, Astronomical Society of the Pacific Conference Series Vol
Rauch T., Deetjen J. L., 2003, in Hubeny I., Mihalas D., Werner K., eds, Astronomical Society of the Pacific Conference Series Vol. 288, Stellar Atmosphere Modeling. p. 103 ( @eprint arXiv astro-ph/0403239 ), @doi 10.48550/arXiv.astro-ph/0403239
-
[86]
443, White Dwarfs
Rauch T., Werner K., 1995, in Koester D., Werner K., eds, , Vol. 443, White Dwarfs. Springer Nature, p. 186, @doi 10.1007/3-540-59157-5_202
1995 doi
-
[87]
Rauch T., Werner K., 1997, in Philip A. G. D., Liebert J., Saffer R., Hayes D. S., eds, The Third Conference on Faint Blue Stars. p. 217
1997
-
[88]
Rauch T., K \"o ppen J., Napiwotzki R., Werner K., 1999, , https://ui.adsabs.harvard.edu/abs/1999A&A...347..169R 347, 169
1999
-
[89]
Rauch T., Demleitner M., Hoyer D., Werner K., 2018, @doi [ ] 10.1093/mnras/sty056 , https://ui.adsabs.harvard.edu/abs/2018MNRAS.475.3896R 475, 3896
2018 doi
-
[90]
E., Werner K., Zeimann G
Reindl N., Bond H. E., Werner K., Zeimann G. R., 2024, @doi [ ] 10.1051/0004-6361/202451591 , https://ui.adsabs.harvard.edu/abs/2024A&A...690A.366R 690, A366
2024 doi
-
[91]
E., Cohen M., Wachter S., Hoard D
Ressler M. E., Cohen M., Wachter S., Hoard D. W., Mainzer A. K., Wright E. L., 2010, @doi [ ] 10.1088/0004-6256/140/6/1882 , https://ui.adsabs.harvard.edu/abs/2010AJ....140.1882R 140, 1882
2010 doi
-
[92]
E., Aller A., Jones D., Lau R
Ressler M. E., Aller A., Jones D., Lau R. M., Miranda L. F., Willacy K., 2025, @doi [ ] 10.3847/1538-3881/adbbcf , https://ui.adsabs.harvard.edu/abs/2025AJ....169..236R 169, 236
2025 doi
-
[93]
Rodrigo C., Solano E., 2020, in XIV.0 Scientific Meeting (virtual) of the Spanish Astronomical Society. p. 182
2020
-
[94]
Rodrigo C., Solano E., Bayo A., 2012, SVO Filter Profile Service Version 1.0 , IVOA Working Draft 15 October 2012, @doi 10.5479/ADS/bib/2012ivoa.rept.1015R
2012 doi
-
[95]
Ruffle P. M. E., Zijlstra A. A., Walsh J. R., Gray M. D., Gesicki K., Minniti D., Comeron F., 2004, @doi [ ] 10.1111/j.1365-2966.2004.08113.x , https://ui.adsabs.harvard.edu/abs/2004MNRAS.353..796R 353, 796
2004
-
[96]
Saurer W., Werner K., Weinberger R., 1997, , https://ui.adsabs.harvard.edu/abs/1997A&A...328..598S 328, 598
1997
-
[97]
A., Kaler J
Shaw R. A., Kaler J. B., 1989, @doi [ ] 10.1086/191320 , https://ui.adsabs.harvard.edu/abs/1989ApJS...69..495S 69, 495
1989 doi
-
[98]
V., Pozdnyakova S
Shimansky V. V., Pozdnyakova S. A., Borisov N. V., Bikmaev I. F., Galeev A. I., Sakhibullin N. A., Spiridonova O. I., 2008, @doi [Astronomy Letters] 10.1134/S1063773708060078 , https://ui.adsabs.harvard.edu/abs/2008AstL...34..423S 34, 423
2008 doi
-
[99]
A., et al., 2015, @doi [ ] 10.1088/0004-637X/799/1/67 , https://ui.adsabs.harvard.edu/abs/2015ApJ...799...67T 799, 67
Toal \'a J. A., et al., 2015, @doi [ ] 10.1088/0004-637X/799/1/67 , https://ui.adsabs.harvard.edu/abs/2015ApJ...799...67T 799, 67
2015 doi
- [100]
-
[101]
Ueta T., Otsuka M., 2021, @doi [ ] 10.1088/1538-3873/ac20ab , https://ui.adsabs.harvard.edu/abs/2021PASP..133i3002U 133, 093002
2021 doi
-
[102]
L., Lallement R., Cox N
Vergely J. L., Lallement R., Cox N. L. J., 2022, VizieR Online Data Catalog: Galactic interstellar dust Gaia-2MASS 3D maps (Vergely+, 2022) , VizieR On-line Data Catalog: J/A+A/664/A174. Originally published in: 2022A&A...664A.174V, @doi 10.26093/cds/vizier.36640174
2022 doi
-
[103]
R., Monreal Ibero A., Laging J., Romeijnders M., 2024, @doi [ ] 10.1051/0004-6361/202449950 , https://ui.adsabs.harvard.edu/abs/2024A&A...690A.264W 690, A264
Walsh J. R., Monreal Ibero A., Laging J., Romeijnders M., 2024, @doi [ ] 10.1051/0004-6361/202449950 , https://ui.adsabs.harvard.edu/abs/2024A&A...690A.264W 690, A264
2024 doi
-
[104]
J., Zijlstra A
Wareing C. J., Zijlstra A. A., O'Brien T. J., 2007, @doi [ ] 10.1111/j.1365-2966.2007.12459.x , https://ui.adsabs.harvard.edu/abs/2007MNRAS.382.1233W 382, 1233
2007
-
[105]
A., et al., 2020, @doi [ ] 10.1051/0004-6361/202037998 , https://ui.adsabs.harvard.edu/abs/2020A&A...640A..10W 640, A10
Weidmann W. A., et al., 2020, @doi [ ] 10.1051/0004-6361/202037998 , https://ui.adsabs.harvard.edu/abs/2020A&A...640A..10W 640, A10
2020 doi
- [106]
-
[107]
L., Dreizler S., Nagel T., Rauch T., Schuh S
Werner K., Deetjen J. L., Dreizler S., Nagel T., Rauch T., Schuh S. L., 2003, in Hubeny I., Mihalas D., Werner K., eds, Astronomical Society of the Pacific Conference Series Vol. 288, Stellar Atmosphere Modeling. p. 31 ( @eprint arXiv astro-ph/0209535 ), @doi 10.48550/arXiv.as...
-
[108]
Zanin C., Kerber F., 2000, , https://ui.adsabs.harvard.edu/abs/2000A&A...356..274Z 356, 274
2000
-
[109]
W., Oliveira C
Ziegler M., Rauch T., Werner K., Kruk J. W., Oliveira C. M., 2009, @doi [ ] 10.1007/s10509-008-9789-4 , https://ui.adsabs.harvard.edu/abs/2009Ap&SS.320..257Z 320, 257
2009 doi
-
[110]
A., Pottasch S
Zijlstra A. A., Pottasch S. R., Bignell C., 1989, , https://ui.adsabs.harvard.edu/abs/1989A&AS...79..329Z 79, 329
1989
Reviewed August 4, 2026 · model on record in the stance chip above.
Discussion (0). Continue with ORCID to comment.