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REVIEW 2 major objections 6 minor 78 references

Association between Recurrent Novae and Nova Super-Remnants

T0 review · 2 major / 6 minor · reviewed 2026-08-12 · deepseek-v4-flash

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Pith's one-line read Recurrent novae sweep surrounding gas into vast nova super-remnants, and two new Galactic examples have been found.

desk verdict A faithful review of the published NSR work, but the abstract's 'two new Galactic NSRs' overstates the evidence: the RS Oph shell is an unpublished conference report, not an established discovery. read the letter →

arxiv 2411.17652 v4 pith:XSH5SSFB submitted 2024-11-26 astro-ph.GA astro-ph.HEastro-ph.SR

Michael William Healy-Kalesh This is my paper · ORCID
classification astro-ph.GAastro-ph.HEastro-ph.SR
keywords novasuper-remnantrecurrentnovaeM31N2008-12aKTEridaniRSOphiuchiTypeIasupernovaprogenitorsinterstellarmediumsweepingH-alphashells
verification ladder T0 review T1 audit T2 compute T3 formal

The pith

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The reading

This review argues that every recurrent nova, and in fact every nova, should be surrounded by a nova super-remnant (NSR): a faint, extended shell of swept-up interstellar medium, up to about 130 parsecs across, built over tens of thousands to millions of years by repeated eruptions. The paper's central claim is that these structures are not rare oddities but a general outcome of nova evolution, and that they mark the sites where white dwarfs are growing toward the Chandrasekhar limit and may soon explode as Type Ia supernovae. It supports this claim by modeling the growth of NSRs, by describing the first confirmed NSR around the Andromeda nova M31N 2008-12a, and by presenting two newly identified Galactic examples, around KT Eridani and RS Ophiuchi. If the claim holds, NSRs become a practical search tool for finding the otherwise hidden or extinct recurring novae that are leading single-degenerate Type Ia progenitors.

What carries the argument

The central object is the nova super-remnant itself: a large, shell-like structure formed by repeated nova eruptions driving a snowplow into the interstellar medium, which the review models with one-dimensional hydrodynamic simulations (the Morpheus code in earlier work, extended in later studies). The key identity is that the NSR's size, shell density, and cavity radius scale with the total kinetic energy injected by the nova over its lifetime, so that systems with frequent, energetic eruptions and a massive white dwarf build up the largest and brightest remnants. This machinery lets the paper connect observable shell dimensions to the underlying nova parameters (accretion rate, white-dwarf mass, ISM density) and predict which systems should host detectable NSRs.

What would settle it

Deep narrowband imaging and spectroscopy of the ~30 pc H-alpha shell around RS Ophiuchi would settle it: if the shell's radial velocity, distance, or expansion kinematics are inconsistent with RS Oph's position, reddening, and ~20-year recurrence timescale, the third NSR claim collapses; similarly, if the far-infrared cavity is shown to be sculpted by the stellar wind (as suggested in the paper's reference [72]) rather than by eruptions, the cavity argument for an NSR fails.

Watch

Extended reading notes

Core claim

The paper establishes that recurrent novae with high white-dwarf masses and high accretion rates create nova super-remnants, structures that grow as each eruption sweeps up and compresses the surrounding interstellar medium into a thin, dense shell enclosing a low-density cavity. One-dimensional hydrodynamic simulations, run for many thousands of eruptions, produce these three-zone structures for every combination of parameters tested, leading the authors to state that all novae should be surrounded by an NSR, though only those around high-accretion-rate systems are bright enough to detect. The review presents two new Galactic detections: a ~50 pc H-alpha shell around KT Eridani, deemed the second NSR, and a ~30 pc H-alpha and [N II] shell around RS Ophiuchi, presented as the third NSR, alongside an archival far-infrared cavity near RS Oph that matches the predicted swept-out region. A survey of M31 and the Large Magellanic Cloud found no NSRs around other known recurrent novae, which the authors attribute to the faintness of most NSRs rather than to their absence.

Load-bearing premise

The load-bearing assumption is that the RS Ophiuchi H-alpha shell is a genuine nova super-remnant physically associated with that recurrent nova, rather than an unrelated Galactic nebula or a wind-blown structure from the red giant.

Editorial extensions

If this is right

  • If all novae create NSRs, then deep H-alpha, X-ray, and infrared surveys of the surroundings of known and candidate recurrent novae should routinely find these structures, turning NSRs into a standard diagnostic.
  • NSRs can certify a system as a recurrent nova even when only one eruption has been observed, as argued for KT Eridani, and can reveal 'extinct' recurrent novae whose donors have been exhausted.
  • Because the NSR grows as the white dwarf approaches the Chandrasekhar limit, finding an NSR marks the central system as a likely Type Ia supernova progenitor and predicts an imminent explosion.
  • The swept-up cavity is depleted of hydrogen-rich material, providing a natural explanation for the lack of hydrogen in Type Ia supernova spectra if the central white dwarf detonates.
  • The observed dearth of NSRs in M31 and the LMC is expected if NSRs are generally near the detection limit, implying that deeper observations will recover more examples rather than ruling out the phenomenon.

Reading between the lines

Editorial extensions of the paper, not claims the author makes directly.

  • The authors' conclusion that 'all novae should be surrounded by a NSR' implies that classical novae, not just recurrent novae, should also host NSRs, albeit fainter and smaller, making them a target for future wide-field surveys of the Galactic plane.
  • If NSRs are as common as modeled, they may explain the presence of large, faint H-alpha shells in the Galaxy that were previously attributed to ancient supernova remnants or planetary nebulae; kinematic follow-up could distinguish these origins.
  • The testable extension of the RS Oph claim is that the H-alpha shell's expansion velocity and proper motion should match the 20-year recurrence timescale and the nova's known position; a mismatch would support the alternative wind-blown or unrelated-nebula interpretations.
  • Because NSR luminosity depends on ongoing eruptions re-ionizing the swept-up gas, systems that have stopped erupting (extinct novae) should harbor dark, quiescent cavities rather than bright shells, offering a way to search for them in infrared or absorption-line data.
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Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, and a circularity audit.

Referee Report

2 major / 6 minor

Summary. This paper is a short invited review of nova super-remnants (NSRs), summarizing the discovery of the prototypical NSR around M31N 2008-12a, the hydrodynamic modeling of NSR formation and growth, and recent observational results including the claimed discovery of two Galactic NSRs around KT Eridani and RS Ophiuchi, as well as a null survey for NSRs in M31 and the LMC. The review is organized around the author's own published work and is written for a conference proceedings.

Significance. If the NSR phenomenon is real and as widespread as the modeling suggests, it offers a new observational tracer of recurrent novae and a potential route to identifying Type Ia supernova progenitors. The paper's strengths include its concise synthesis of published hydrodynamic predictions with explicit parameters (Section 3), its reliance on a refereed discovery for the KT Eri NSR (Section 4), and its honest reporting of a null survey in M31 and the LMC (Section 6). However, the abstract and Section 5 present the RS Ophiuchi H-alpha shell as an established third NSR based solely on an unpublished conference presentation and private communication, which is not citable or falsifiable as written. This weakens the paper's central claim that two new Galactic NSRs have been discovered.

major comments (2)
  1. [Abstract and Section 5] The abstract claims 'the discovery of two new Galactic nova super-remnants', and Section 5 states that the RS Oph H-alpha shell 'takes its place as the third nova super-remnant discovered', citing only 'Michael Shara, presented during this conference and private communication'. No imaging, coordinates, surface brightness, or spectroscopy is provided, and no published reference is cited for this shell. This makes the claim unfalsifiable as presented. Because the abstract and Section 6 ('the three NSRs already uncovered') rely on this claim, the manuscript must either cite a peer-reviewed publication of the RS Oph H-alpha shell, provide the supporting data in an appendix, or explicitly label the RS Oph shell as a preliminary, unpublished result and revise the abstract and Section 6 accordingly.
  2. [Section 5] The far-infrared cavity around RS Oph is one of the two independent lines of evidence for an RS Oph NSR, but the manuscript itself notes that the same feature was identified over a decade earlier by van Loon [72], who attributed it to the wind from RS Oph. The text does not provide any quantitative argument—such as comparing the kinetic energy, mass-loss rate, or timescale of the recurrent nova eruptions with those of the red-giant wind—to distinguish the nova-eruption origin from the wind origin. Without such a test, the cavity cannot serve as independent support for the RS Oph NSR, and the claim that the H-alpha shell 'strengthened' the cavity interpretation is not substantiated.
minor comments (6)
  1. [Section 1] There is a typo in 'RNewith' in the sentence defining recurrent novae; it should read 'RNe with'.
  2. [Section 2] The phrase 'orders of magnitude larger than other nova shell' should use the plural 'other nova shells'.
  3. [Section 5] The text contains several minor typographical issues, including 'H-alpha-brightNSRshell' (missing space) and 'complimented' which should be 'complemented'.
  4. [Section 6] The phrase 'apparentdearth' should be 'apparent dearth'.
  5. [Section 5] Since the RS Oph H-alpha shell is central to the paper's claimed novelty, the manuscript would be much improved by including a figure of this structure (if permission allows) or by providing a reference to a forthcoming publication; as it stands, the description is too vague for readers to assess.
  6. [References] The reference cited for the RS Oph cavity, Healy-Kalesh et al. [70], is a published paper about the cavity, but it does not contain the H-alpha shell; the text should clarify that the H-alpha shell itself is unpublished so that readers do not conflate the two.

Circularity Check

0 steps flagged · score 0.0 of 10

No significant circularity: the review's NSR predictions trace to independent published hydrodynamical simulations and archival observations; the RS Oph H-alpha shell is a verification gap, not a circular step.

full rationale

This is a conference-review article and carries out no new derivation of its own. The central NSR predictions trace to published hydrodynamic simulations (Darnley et al. 2019; Healy-Kalesh et al. 2023) that evolve repeated eruptions into a pre-specified ISM and are then compared with observed sizes and structures rather than fitted to the claims being made. The 12a NSR discovery is supported by independent narrow-band imaging and spectroscopy that excluded an SNR origin. The KT Eridani discovery is from Shara et al. 2024, not authored by the present paper's author, and the matching hydrodynamic model has stated parameters and is externally falsifiable. For RS Ophiuchi, the paper itself acknowledges that the far-IR cavity was independently identified over a decade earlier and that the stellar wind was the originally suggested origin, so interpreting it as an NSR cavity is a physical interpretation, not a constructed prediction; the additional H-alpha shell is reported on the basis of a conference presentation and private communication, which is an evidence/reliability concern rather than circularity. The M31/LMC null survey is an independent external check. No equation or fitted parameter in the paper reduces to its own target, and no load-bearing premise is justified only by an unverified self-citation.

Assumptions & free parameters 4 free parameters · 4 assumptions · 0 invented entities

The paper is a review and does not introduce new free parameters. The listed parameters are inputs to the reviewed simulations. The key unstated assumptions are the validity of 1D hydrodynamics and the physical association of the claimed RS Ophiuchi structures with the recurrent nova.

free parameters (4)
  • ISM density (n_H) = 0.1 to 100 cm^-3
    Grid parameter in Healy-Kalesh et al. (2023) simulations; varied over a range, not fitted to the observed NSR sizes.
  • Mass accretion rate (Mdot) = 10^-9 to 10^-7 M_sun/yr
    Input range for nova models; scanned, not fitted to the target results.
  • Initial white dwarf mass = 0.65 to 1.3 M_sun
    Grid parameter in the simulations reviewed in Section 3.
  • White dwarf temperature = 10^7 to 3x10^7 K
    Grid parameter in the simulations reviewed in Section 3.
assumptions (4)
  • domain assumption The thermonuclear runaway model of nova eruptions is correct.
    Standard model assumed throughout the review.
  • domain assumption One-dimensional hydrodynamics can capture the large-scale growth of nova super-remnants.
    The predictions reviewed in Sections 3 through 5 rely on 1D simulations; 3D ISM structure and proper motion are neglected.
  • ad hoc to paper The RS Ophiuchi H-alpha shell is at the distance of RS Ophiuchi and physically associated with it.
    The size of the claimed third NSR (30 pc) depends on this assumption; no evidence is given in the paper.
  • domain assumption The far-infrared cavity around RS Ophiuchi was carved by nova eruptions, not by the stellar wind.
    The paper acknowledges a wind origin was proposed by van Loon (2008) but adopts the NSR interpretation.

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Cite this review

Pith. "Pith review of Association between Recurrent Novae and Nova Super-Remnants." pith.science (2026). https://pith.science/paper/XSH5SSFB

@misc{pith2026241117652,
  author       = {Pith},
  title        = {Pith review of: Association between Recurrent Novae and Nova Super-Remnants},
  year         = {2026},
  howpublished = {\url{https://pith.science/paper/XSH5SSFB}},
  note         = {Machine review of arXiv:2411.17652}
}
read the original abstract

Nova super-remnants (NSRs) are substantially extended structures (up to ~130 parsecs across) encompassing recurrent novae. NSRs grow as a result of frequent nova eruptions transporting vast quantities of the locally surrounding interstellar medium away from the binary system over many millennia into a thin high-density shell, as the central white dwarf grows towards the Chandrasekhar limit. The prototypical NSR, first identified as such in 2014, is situated in the Andromeda Galaxy and belongs to the annually erupting nova, M31N 2008-12a (or '12a'). In this short review, modelling of evolving NSRs (including the 12a NSR) will be outlined as motivation towards searching for more of these phenomena in the Galaxy and beyond. The latest developments in this upcoming subfield of nova research will then be presented including the discovery of two new Galactic nova super-remnants (and their consequent modelling) and the first survey undertaken with the sole purpose of finding NSRs in the Andromeda Galaxy and the Large Magellanic Cloud.

Figures

Figures reproduced from arXiv: 2411.17652 by the authors.

Figure 1
Figure 1. Top left panel: Narrow-band H𝛼 image of the region of M 31 containing the NSR around 12a (designated object 787 in this work). Taken and adapted from Walterbos & Braun [57], reproduced with permission © ESO. Top right panel: Continuum-subtracted H𝛼 image of the NSR surrounding 12a taken with the Liverpool Telescope. The dashed white line approximately follows the border of the elliptical remnant. Taken from Darnley … view at source ↗
Figure 2
Figure 2. Dynamics of the final epoch of grown NSRs from Healy-Kalesh et al. [66]. First row: NSRs grown with accretion rate of 10−7 M⊙ yr−1 with fixed WD temperature and initial mass for various ISM densities. Second row: Same as first row but with accretion rate of 10−8 M⊙ yr−1 . Third row: Same as first row but with accretion rate of 10−9 M⊙ yr−1 . Fourth row: NSRs grown with fixed accretion rate, ISM density and initial W… view at source ↗

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Works this paper leans on

78 extracted references · 66 canonical work pages

  1. [72]

    Historic mass loss from the RS Ophiuchi system

    J.T. van Loon,Historic Mass Loss from the RS Ophiuchi System, inRS Ophiuchi (2006) and the Recurrent Nova Phenomenon, A. Evans, M.F. Bode, T.J. O’Brien and M.J. Darnley, eds., vol. 401 ofAstronomical Society of the Pacific Conference Series, p. 90, Dec., 2008, DOI [0710.5628]

    work page Pith review arXiv 2006

  2. [1]

    Walker,Nova DQ Herculis (1934): an Eclipsing Binary with Very Short Period,PASP 66 (1954) 230

    M.F. Walker,Nova DQ Herculis (1934): an Eclipsing Binary with Very Short Period,PASP 66 (1954) 230

    work page 1934

  3. [2]

    Warner,Cataclysmic variable stars, Cambridge Astrophysics Series, Cambridge, New York: Cambridge University Press, 1995 (1995)

    B. Warner,Cataclysmic variable stars, Cambridge Astrophysics Series, Cambridge, New York: Cambridge University Press, 1995 (1995)

    work page 1995

  4. [3]

    On the Progenitors of Galactic Novae

    M.J. Darnley, V.A.R.M. Ribeiro, M.F. Bode, R.A. Hounsell and R.P. Williams,On the Progenitors of Galactic Novae, ApJ 746 (2012) 61 [1112.2589]

    work page Pith review arXiv 2012

  5. [4]

    Starrfield, W.M

    S. Starrfield, W.M. Sparks and J.W. Truran,The cause of the nova outburst, inStructure and EvolutionofCloseBinarySystems , P.Eggleton, S.MittonandJ.Whelan, eds., vol.73of IAU Symposium, pp. 155–172, 1976

    work page 1976

  6. [5]

    Starrfield, C

    S. Starrfield, C. Iliadis and W.R. Hix,The Thermonuclear Runaway and the Classical Nova Outburst, PASP 128 (2016) 051001

    work page 2016

  7. [6]

    Schatzman,Remarques sur le phénomène de Nova

    E. Schatzman,Remarques sur le phénomène de Nova. III. L’onde de choc dans la bombe à hydrogène,Annales d’Astrophysique13 (1950) 384

    work page 1950

  8. [7]

    Starrfield, J.W

    S. Starrfield, J.W. Truran, W.M. Sparks and G.S. Kutter,CNO Abundances and Hydrodynamic Models of the Nova Outburst, ApJ 176 (1972) 169

    work page 1972

Show all 78 references
  1. [8]

    Prialnik, M.M

    D. Prialnik, M.M. Shara and G. Shaviv,The evolution of a slow nova model with a Z = 0.03 envelope from pre-explosion to extinction,A&A 62(1978) 339

    1978

  2. [9]

    Shara,A theoretical explanation of the absolute magnitude-decline time /M𝐵−𝑡 sub 3/ relationship for classical novae,ApJ 243 (1981) 926

    M.M. Shara,A theoretical explanation of the absolute magnitude-decline time /M𝐵−𝑡 sub 3/ relationship for classical novae,ApJ 243 (1981) 926

    1981

  3. [10]

    Prialnik, M.M

    D. Prialnik, M.M. Shara and G. Shaviv,The evolution of a fast nova model with a Z = 0.03 envelope from pre-explosion to decline., A&A 72(1979) 192

    1979

  4. [11]

    Henze, M.J

    M. Henze, M.J. Darnley, S.C. Williams, M. Kato, I. Hachisu, G.C. Anupama et al.,Breaking the Habit: The Peculiar 2016 Eruption of the Unique Recurrent Nova M31N 2008-12a, ApJ 857 (2018) 68 [1803.00181]. 10 Association between Recurrent Novae and Nova Super-Remnants Michael Wil...

    2018 arXiv

  5. [12]

    Worters, S.P.S

    H.L. Worters, S.P.S. Eyres, G.E. Bromage and J.P. Osborne,Resumption of mass accretion in RS Oph,MNRAS 379 (2007) 1557 [0706.1213]

    2007 arXiv

  6. [13]

    Ford,The number of outbursts of a classical nova., ApJ 219 (1978) 595

    H.C. Ford,The number of outbursts of a classical nova., ApJ 219 (1978) 595

    1978

  7. [14]

    Yaron, D

    O. Yaron, D. Prialnik, M.M. Shara and A. Kovetz,An Extended Grid of Nova Models. II. The Parameter Space of Nova Outbursts, ApJ 623 (2005) 398 [astro-ph/0503143]

    2005 arXiv

  8. [15]

    Hillman, D

    Y. Hillman, D. Prialnik, A. Kovetz and M.M. Shara,Growing White Dwarfs to the Chandrasekhar Limit: The Parameter Space of the Single Degenerate SNIa Channel, ApJ 819 (2016) 168 [1508.03141]

    2016 arXiv

  9. [16]

    Shara, D

    M.M. Shara, D. Prialnik, Y. Hillman and A. Kovetz,The Masses and Accretion Rates of White Dwarfs in Classical and Recurrent Novae,ApJ 860 (2018) 110 [1804.06880]

    2018 arXiv

  10. [17]

    B.E.Schaefer,F.M.Walter,R.HounsellandY.Hillman, ThenovaKTEriIsarecurrentnova with a recurrence time-scale of 40-50 yr,MNRAS 517 (2022) 3864 [2210.10448]

    2022 arXiv

  11. [18]

    Darnley,Accrete, Accrete, Accrete

    M.J. Darnley,Accrete, Accrete, Accrete... Bang! (and repeat): The remarkable Recurrent Novae, inProceedingsofTheGoldenAge ofCataclysmicVariablesandRelatedObjectsV— PoS(GOLDEN2019), vol. 368, p. 044, 2021, DOI

    2021

  12. [19]

    Pagnotta and B.E

    A. Pagnotta and B.E. Schaefer,Identifying and Quantifying Recurrent Novae Masquerading as Classical Novae, ApJ 788 (2014) 164 [1405.0246]

    2014 arXiv

  13. [20]

    Shara, K.M

    M.M. Shara, K.M. Lanzetta, J.T. Garland, S. Gromoll, D. Valls-Gabaud, F.M. Walter et al., Introducing the Condor Array Telescope - IV. A possible nova super-remnant surrounding the putative recurrent nova KT Eridani, MNRAS 529 (2024) 224 [2310.17055]

    2024 arXiv

  14. [21]

    M.W.Healy-Kalesh,M.J.Darnley, M.M.Shara, K.M.Lanzetta, J.T.GarlandandS.Gromoll, Hydrodynamic simulations of the KT Eridani nova super-remnant,MNRAS 529 (2024) 236 [2310.17258]

    2024 arXiv

  15. [22]

    Darnley and M

    M.J. Darnley and M. Henze,On a century of extragalactic novae and the rise of the rapid recurrent novae, Advances in Space Research66(2020) 1147 [1909.10497]

    2020 arXiv

  16. [23]

    Healy-Kalesh, M.J

    M.W. Healy-Kalesh, M.J. Darnley and M.M. Shara,On an apparent dearth of recurrent nova super-remnants in the Local Group, MNRAS 528 (2024) 3531 [2401.04583]

    2024 arXiv

  17. [24]

    Starrfield, W.M

    S. Starrfield, W.M. Sparks and G. Shaviv,A Model for the 1987 Outburst of the Recurrent Nova U Scorpii, ApJL 325 (1988) L35

    1988

  18. [25]

    Whelan and I

    J. Whelan and I. Iben, Jr.,Binaries and Supernovae of Type I, ApJ 186 (1973) 1007

    1973

  19. [26]

    Chandrasekhar,The Maximum Mass of Ideal White Dwarfs, ApJ 74(1931) 81

    S. Chandrasekhar,The Maximum Mass of Ideal White Dwarfs, ApJ 74(1931) 81

    1931

  20. [27]

    Hachisu, M

    I. Hachisu, M. Kato and G.J.M. Luna,Supersoft X-Ray Light Curve of RS Ophiuchi (2006), ApJL 659 (2007) L153 [astro-ph/0703185]. 11 Association between Recurrent Novae and Nova Super-Remnants Michael William Healy-Kalesh

    2006 arXiv

  21. [28]

    O’Brien, R.J

    T.J. O’Brien, R.J. Davis, M.F. Bode, S.P.S. Eyres and J.M. Porter,The ejecta of classical novae, inGalaxies and their Constituents at the Highest Angular Resolutions, R.T. Schilizzi, ed., vol. 205, p. 260, Jan., 2001

    2001

  22. [29]

    Cohen and A.J

    J.G. Cohen and A.J. Rosenthal,Nova shells., ApJ 268 (1983) 689

    1983

  23. [30]

    Cohen,Nova shells

    J.G. Cohen,Nova shells. II - Calibration of the distance scale using novae, ApJ 292 (1985) 90

    1985

  24. [31]

    Wade,Optical Imagery of Nova Remnants, inIAU Colloq

    R.A. Wade,Optical Imagery of Nova Remnants, inIAU Colloq. 122: Physics of Classical Novae, A.CassatellaandR.Viotti,eds., vol.369of LectureNotesinPhysics,BerlinSpringer Verlag, pp. 179–187, 1990, DOI

    1990

  25. [32]

    Slavin, T.J

    A.J. Slavin, T.J. O’Brien and J.S. Dunlop,A deep optical imaging study of the nebular remnants of classical novae, MNRAS 276 (1995) 353

    1995

  26. [33]

    Harvey, M.P

    E.J. Harvey, M.P. Redman, P. Boumis, S. Akras, K. Fitzgerald, S. Dulaimi et al.,Two new nova shells associated with V4362 Sagittarii and DO Aquilae, MNRAS 499 (2020) 2959 [2009.08272]

    2020 arXiv

  27. [34]

    Porter, T.J

    J.M. Porter, T.J. O’Brien and M.F. Bode,On the asphericity of nova remnants caused by rotating white dwarf envelopes,MNRAS 296 (1998) 943

    1998

  28. [35]

    Williams, N.J.Woolf, E.K

    R.E. Williams, N.J.Woolf, E.K. Hege, R.L.Moore andD.A. Kopriva,The shellaround Nova DQ Herculis 1934.,ApJ 224 (1978) 171

    1978

  29. [36]

    Vaytet, T.J

    N.M.H. Vaytet, T.J. O’Brien and A.P. Rushton,Evidence for ablated flows in the shell of the nova DQ Herculis,MNRAS 380 (2007) 175 [0706.0054]

    2007 arXiv

  30. [37]

    Gallagher, E.K

    J.S. Gallagher, E.K. Hege, D.A. Kopriva, R.E. Williams and H.R. Butcher, Spectrophotometry of the nebula surrounding nova T AUR 1891., ApJ 237 (1980) 55

    1980

  31. [38]

    Harman and T.J

    D.J. Harman and T.J. O’Brien,Hubble Space Telescope imaging and ground-based spectroscopy of old nova shells - II. The bipolar shell of the slow nova HR Del,MNRAS 344 (2003) 1219

    2003

  32. [39]

    Shara, C.D

    M.M. Shara, C.D. Martin, M. Seibert, R.M. Rich, S. Salim, D. Reitzel et al.,An ancient nova shell around the dwarf nova Z Camelopardalis, Nature 446 (2007) 159

    2007

  33. [40]

    Shara, T

    M.M. Shara, T. Mizusawa, D. Zurek, C.D. Martin, J.D. Neill and M. Seibert,The Inter-eruption Timescale of Classical Novae from Expansion of the Z Camelopardalis Shell, ApJ 756 (2012) 107 [1205.3531]

    2012 arXiv

  34. [41]

    Shara, K.M

    M.M. Shara, K.M. Lanzetta, J.T. Garland, S. Gromoll, D. Valls-Gabaud, F.M. Walter et al., Introducing the Condor Array Telescope - III. The expansion and age of the shell of the dwarf nova Z Camelopardalis, and detection of a second, larger shell, MNRAS 529(2024) 212 [2310.001...

    2024 arXiv

  35. [42]

    Shara, T

    M.M. Shara, T. Mizusawa, P. Wehinger, D. Zurek, C.D. Martin, J.D. Neill et al.,AT Cnc: A Second Dwarf Nova with a Classical Nova Shell, ApJ 758 (2012) 121 [1208.1280]

    2012 arXiv

  36. [43]

    Shara, L

    M.M. Shara, L. Drissen, T. Martin, A. Alarie and F.R. Stephenson,When does an old nova become a dwarf nova? Kinematics and age of the nova shell of the dwarf nova AT Cancri, MNRAS 465 (2017) 739 [1609.06695]

    2017 arXiv

  37. [44]

    Miszalski, P.A

    B. Miszalski, P.A. Woudt, S.P. Littlefair, B. Warner, H.M.J. Boffin, R.L.M. Corradi et al., Discovery of an eclipsing dwarf nova in the ancient nova shell Te 11,MNRAS 456 (2016) 633 [1511.04212]

    2016 arXiv

  38. [45]

    Shara, M

    M.M. Shara, M. Livio, A.F.J. Moffat and M. Orio,Do Novae Hibernate during Most of the Millennia between Eruptions? Links between Dwarf and Classical Novae, and Implications for the Space Densities and Evolution of Cataclysmic Binaries,ApJ 311 (1986) 163

    1986

  39. [46]

    Shara, D.R

    M.M. Shara, D.R. Zurek, R.E. Williams, D. Prialnik, R. Gilmozzi and A.F.J. Moffat,HST Imagery of the Non-Expanding, Clumped “Shell” of the Recurrent Nova T Pyxidis,AJ 114 (1997) 258

    1997

  40. [47]

    Toraskar, M.-M

    J. Toraskar, M.-M. Mac Low, M.M. Shara and D.R. Zurek,Dynamical Fragmentation of the T Pyxidis Nova Shell During Recurrent Eruptions,ApJ 768 (2013) 48 [1307.7139]

    2013 arXiv

  41. [48]

    Shara, D

    M.M. Shara, D. Zurek, B.E. Schaefer, H.E. Bond, P. Godon, M.-M. Mac Low et al.,HST Images Flash Ionization of Old Ejecta by the 2011 Eruption of Recurrent Nova T Pyxidis, ApJ 805 (2015) 148 [1503.08840]

    2015 arXiv

  42. [49]

    L. Izzo, L. Pasquini, E. Aydi, M. Della Valle, R. Gilmozzi, E.A. Harvey et al.,The physical properties of T Pyx as measured by MUSE I. The geometrical distribution of the ejecta and the distance to the remnant, arXiv e-prints(2023) arXiv:2312.04277 [2312.04277]

    2023 arXiv

  43. [50]

    Darnley, M

    M.J. Darnley, M. Henze, M.F. Bode, I. Hachisu, M. Hernanz, K. Hornoch et al.,M31N 2008-12a - The Remarkable Recurrent Nova in M31: Panchromatic Observations of the 2015 Eruption., ApJ 833 (2016) 149 [1607.08082]

    2016 arXiv

  44. [51]

    Darnley,M31N 2008-12a — The Remarkable Recurrent Nova in M31, in20th European White Dwarf Workshop, P.-E

    M.J. Darnley,M31N 2008-12a — The Remarkable Recurrent Nova in M31, in20th European White Dwarf Workshop, P.-E. Tremblay, B. Gaensicke and T. Marsh, eds., vol. 509 of Astronomical Society of the Pacific Conference Series, (San Francisco), pp. 515–520, Mar., 2017 [1611.01301]

    2008 arXiv

  45. [52]

    Nishiyama and F

    K. Nishiyama and F. Kabashima,CBAT, Dec., 2008

    2008

  46. [53]

    M. Kato, H. Saio and I. Hachisu,Multi-wavelength Light Curve Model of the One-year Recurrence Period Nova M31N 2008-12A, ApJ 808(2015) 52 [1506.05364]

    2015 arXiv

  47. [54]

    Darnley, R

    M.J. Darnley, R. Hounsell, P. Godon, D.A. Perley, M. Henze, N.P.M. Kuin et al.,Inflows, Outflows, and a Giant Donor in the Remarkable Recurrent Nova M31N 2008-12a?—Hubble Space Telescope Photometry of the 2015 Eruption, ApJ 849 (2017) 96 [1709.10145]. 13 Association between Re...

    2017 arXiv

  48. [55]

    Darnley, R

    M.J. Darnley, R. Hounsell, P. Godon, D.A. Perley, M. Henze, N.P.M. Kuin et al.,No Neon, but Jets in the Remarkable Recurrent Nova M31N 2008-12a?—Hubble Space Telescope Spectroscopy of the 2015 Eruption, ApJ 847 (2017) 35 [1708.06795]

    2017 arXiv

  49. [56]

    M.J.Darnley, M.Henze, I.A.Steele, M.F.Bode, V.A.R.M.Ribeiro, P.Rodríguez-Giletal., A remarkable recurrent nova in M31: Discovery and optical/UV observations of the predicted 2014 eruption,A&A 580 (2015) A45 [1506.04202]

    2015 arXiv

  50. [57]

    Walterbos and R

    R.A.M. Walterbos and R. Braun,The interstellar medium of M 31: III. Narrow-band imagery in H-alpha and S II ., A&AS 92(1992) 625

    1992

  51. [58]

    Coelho, A.W

    E.A. Coelho, A.W. Shafter and K.A. Misselt,The Rate and Spatial Distribution of Novae in M101 (NGC 5457),ApJ 686 (2008) 1261 [0807.0210]

    2008 arXiv

  52. [59]

    Franck, A.W

    J.R. Franck, A.W. Shafter, K. Hornoch and K.A. Misselt,The Nova Rate in NGC 2403, ApJ 760 (2012) 13 [1210.0604]

    2012 arXiv

  53. [60]

    Steele, R.J

    I.A. Steele, R.J. Smith, P.C. Rees, I.P. Baker, S.D. Bates, M.F. Bode et al.,The Liverpool Telescope: performance and first results, inGround-based Telescopes, J.M. Oschmann, Jr., ed., vol. 5489 ofSociety of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, pp....

    2004

  54. [61]

    Massey, K.A.G

    P. Massey, K.A.G. Olsen, P.W. Hodge, G.H. Jacoby, R.T. McNeill, R.C. Smith et al.,A Survey of Local Group Galaxies Currently Forming Stars. II. UBVRI Photometry of Stars in Seven Dwarfs and a Comparison of the Entire Sample, AJ 133 (2007) 2393 [astro-ph/0702236]

    2007 arXiv

  55. [62]

    Darnley, R

    M.J. Darnley, R. Hounsell, T.J. O’Brien, M. Henze, P. Rodríguez-Gil, A.W. Shafter et al.,A recurrent nova super-remnant in the Andromeda galaxy, Nature 565 (2019) 460 [1712.04872]

    2019 arXiv

  56. [63]

    Vaytet, T.J

    N.M.H. Vaytet, T.J. O’Brien and M.F. Bode,Swift Observations of the 2006 Outburst of the Recurrent Nova RS Ophiuchi. II. One-dimensional Hydrodynamical Models of Wind-driven Shocks, ApJ 665(2007) 654 [0704.2549]

    2007 arXiv

  57. [64]

    Filippenko,Optical Spectra of Supernovae,Annual Review of Astronomy and Astrophysics 35(1997) 309

    A.V. Filippenko,Optical Spectra of Supernovae,Annual Review of Astronomy and Astrophysics 35(1997) 309

    1997

  58. [65]

    Harvey, M.P

    E. Harvey, M.P. Redman, P. Boumis, M. Kopsacheili, S. Akras, L. Sabin et al.,The circumstellar environment of pre-SN Ia systems, inSupernova Remnants: An Odyssey in Space after Stellar Death, p. 137, June, 2016, DOI [1608.05016]

    2016 arXiv

  59. [66]

    Healy-Kalesh, M.J

    M.W. Healy-Kalesh, M.J. Darnley, É.J. Harvey, C.M. Copperwheat, P.A. James, T. Andersson et al.,On the observability of recurrent nova super-remnants, MNRAS 521 (2023) 3004 [2302.11900]

    2023 arXiv

  60. [67]

    Shafter,The Galactic Nova Rate Revisited,ApJ 834 (2017) 196 [1606.02358]

    A.W. Shafter,The Galactic Nova Rate Revisited,ApJ 834 (2017) 196 [1606.02358]. 14 Association between Recurrent Novae and Nova Super-Remnants Michael William Healy-Kalesh

    2017 arXiv

  61. [68]

    Pietsch,X-ray emission from optical novae in M 31,Astronomische Nachrichten331 (2010) 187 [0910.3865]

    W. Pietsch,X-ray emission from optical novae in M 31,Astronomische Nachrichten331 (2010) 187 [0910.3865]

    2010 arXiv

  62. [69]

    Lanzetta, S

    K.M. Lanzetta, S. Gromoll, M.M. Shara, S. Berg, D. Valls-Gabaud, F.M. Walter et al., Introducing the Condor Array Telescope. I. Motivation, Configuration, and Performance, PASP 135 (2023) 015002 [2301.06301]

    2023 arXiv

  63. [70]

    Healy-Kalesh, M.J

    M.W. Healy-Kalesh, M.J. Darnley, É.J. Harvey and A.M. Newsam,Discovery of a nova super-remnant cavity surrounding RS Ophiuchi,MNRAS 529 (2024) L175 [2402.05855]

    2024 arXiv

  64. [71]

    Miville-Deschênes and G

    M.-A. Miville-Deschênes and G. Lagache,IRIS: A New Generation of IRAS Maps,ApJS 157 (2005) 302 [astro-ph/0412216]

    2005 arXiv

  65. [73]

    Massey, K.A.G

    P. Massey, K.A.G. Olsen, P.W. Hodge, S.B. Strong, G.H. Jacoby, W. Schlingman et al.,A Survey of Local Group Galaxies Currently Forming Stars. I. UBVRI Photometry of Stars in M31 and M33, AJ 131(2006) 2478 [astro-ph/0602128]

    2006 arXiv

  66. [74]

    Massey, R.T

    P. Massey, R.T. McNeill, K.A.G. Olsen, P.W. Hodge, C. Blaha, G.H. Jacoby et al.,A Survey of Local Group Galaxies Currently Forming Stars. III. A Search for Luminous Blue Variables and Other H𝛼 Emission-Line Stars, AJ 134 (2007) 2474 [0709.1267]

    2007 arXiv

  67. [75]

    Williams and M.J

    S.C. Williams and M.J. Darnley,Classification of M31N 2017-01e as a He/N nova, The Astronomer’s Telegram10042(2017) 1

    2017

  68. [76]

    Shafter, K

    A.W. Shafter, K. Taguchi, J. Zhao and K. Hornoch,M31N 2017-01e: Discovery of a Previous Eruption in this Enigmatic Recurrent Nova, Research Notes of the American Astronomical Society6(2022) 241 [2211.06834]

    2022 arXiv

  69. [77]

    Ivezić, S.M

    Ž. Ivezić, S.M. Kahn, J.A. Tyson, B. Abel, E. Acosta, R. Allsman et al.,LSST: From Science Drivers to Reference Design and Anticipated Data Products,ApJ 873 (2019) 111 [0805.2366]

    2019 arXiv

  70. [78]

    Healy,Novae, the Super-Remnant Phenomenon, and the Link to Type Ia Supernovae, Ph.D

    M.W. Healy,Novae, the Super-Remnant Phenomenon, and the Link to Type Ia Supernovae, Ph.D. thesis, Liverpool John Moores University, Sept., 2021. 15 Association between Recurrent Novae and Nova Super-Remnants Michael William Healy-Kalesh DISCUSSION (Q) Mumbua (Miriam) Nyamai: W...

    2021

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