Pith. sign in

REVIEW 1 cited by

Not yet reviewed by Pith; the record is open.

Re-run · record.json Download PDF Read on arXiv ↗

This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.

SPECIMEN: schema-true, not a live event

T0 review · schema-true

One-sentence machine reading of the paper's core claim.

pith:XXXXXXXX · record.json · timestamp

arxiv 1101.2037 v4 pith:E7G4ABEK submitted 2011-01-11 astro-ph.GA

Planck Early Results: Thermal dust in Nearby Molecular Clouds

Planck Collaboration: A. Abergel , P. A. R. Ade , N. Aghanim , M. Arnaud , M. Ashdown , J. Aumont , C. Baccigalupi , A. Balbi
show 191 more authors
A. J. Banday R. B. Barreiro J. G. Bartlett E. Battaner K. Benabed A. Beno\^it J.-P. Bernard M. Bersanelli R. Bhatia J. J. Bock A. Bonaldi J. R. Bond J. Borrill F. R. Bouchet F. Boulanger M. Bucher C. Burigana P. Cabella J.-F. Cardoso A. Catalano L. Cay\'on A. Challinor A. Chamballu L.-Y Chiang C. Chiang P. R. Christensen D. L. Clements S. Colombi F. Couchot A. Coulais B. P. Crill F. Cuttaia L. Danese R. D. Davies R. J. Davis P. de Bernardis G. de Gasperis A. de Rosa G. de Zotti J. Delabrouille J.-M. Delouis F.-X. D\'esert C. Dickinson K. Dobashi S. Donzelli O. Dor\'e U. D\"orl M. Douspis X. Dupac G. Efstathiou T. A. En{\ss}lin H. K. Eriksen F. Finelli O. Forni M. Frailis E. Franceschi S. Galeotta K. Ganga M. Giard G. Giardino Y. Giraud-H\'eraud J. Gonz\'alez-Nuevo K. M. G\'orski S. Gratton A. Gregorio A. Gruppuso V. Guillet F. K. Hansen D. Harrison S. Henrot-Versill\'e D. Herranz S. R. Hildebrandt E. Hivon M. Hobson W. A. Holmes W. Hovest R. J. Hoyland K. M. Huffenberger A. H. Jaffe A. Jones W. C. Jones M. Juvela E. Keih\"anen R. Keskitalo T. S. Kisner R. Kneissl L. Knox H. Kurki-Suonio G. Lagache J.-M. Lamarre A. Lasenby R. J. Laureijs C. R. Lawrence S. Leach R. Leonardi C. Leroy M. Linden-V{\o}rnle M. L\'opez-Caniego P. M. Lubin J. F. Mac\'ias-P\'erez C. J. MacTavish B. Maffei N. Mandolesi R. Mann M. Maris D. J. Marshall P. Martin E. Mart\'inez-Gonz\'alez S. Masi S. Matarrese F. Matthai P. Mazzotta P. McGehee P. R. Meinhold A. Melchiorri L. Mendes A. Mennella S. Mitra M.-A. Miville-Desch\^enes A. Moneti L. Montier G. Morgante D. Mortlock D. Munshi A. Murphy P. Naselsky P. Natoli C. B. Netterfield H. U. N{\o}rgaard-Nielsen F. Noviello D. Novikov I. Novikov S. Osborne F. Pajot R. Paladini F. Pasian G. Patanchon O. Perdereau L. Perotto F. Perrotta F. Piacentini M. Piat S. Plaszczynski E. Pointecouteau G. Polenta N. Ponthieu T. Poutanen G. Pr\'ezeau S. Prunet J.-L. Puget W. T. Reach R. Rebolo M. Reinecke C. Renault S. Ricciardi T. Riller I. Ristorcelli G. Rocha C. Rosset J. A. Rubi\~no-Mart\'in B. Rusholme M. Sandri D. Santos G. Savini D. Scott M. D. Seiffert P. Shellard G. F. Smoot J.-L. Starck F. Stivoli V. Stolyarov R. Sudiwala J.-F. Sygnet J. A. Tauber L. Terenzi L. Toffolatti M. Tomasi J.-P. Torre M. Tristram J. Tuovinen G. Umana L. Valenziano L. Verstraete P. Vielva F. Villa N. Vittorio L. A. Wade B. D. Wandelt D. Yvon A. Zacchei A. Zonca
This is my paper
classification astro-ph.GA
keywords dustmolecularregionscomplexdepthdiffuseemissionmeasured
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
0 comments
read the original abstract

Planck allows unbiased mapping of Galactic sub-millimetre and millimetre emission from the most diffuse regions to the densest parts of molecular clouds. We present an early analysis of the Taurus molecular complex, on line-of-sight-averaged data and without component separation. The emission spectrum measured by Planck and IRAS can be fitted pixel by pixel using a single modified blackbody. Some systematic residuals are detected at 353 GHz and 143 GHz, with amplitudes around -7 % and +13 %, respectively, indicating that the measured spectra are likely more complex than a simple modified blackbody. Significant positive residuals are also detected in the molecular regions and in the 217 GHz and 100 GHz bands, mainly caused by to the contribution of the J=2-1 and J=1-0 12CO and 13CO emission lines. We derive maps of the dust temperature T, the dust spectral emissivity index beta, and the dust optical depth at 250 microns tau. The temperature map illustrates the cooling of the dust particles in thermal equilibrium with the incident radiation field, from 16-17 K in the diffuse regions to 13-14 K in the dense parts. The distribution of spectral indices is centred at 1.78, with a standard deviation of 0.08 and a systematic error of 0.07. We detect a significant T-beta anti-correlation. The dust optical depth map reveals the spatial distribution of the column density of the molecular complex from the densest molecular regions to the faint diffuse regions. We use near-infrared extinction and HI data at 21-cm to perform a quantitative analysis of the spatial variations of the measured dust optical depth at 250 microns per hydrogen atom tau/NH. We report an increase of tau/NH by a factor of about 2 between the atomic phase and the molecular phase, which has a strong impact on the equilibrium temperature of the dust particles.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Tracing grain growth in the forming prestellar core L1506C with 3D modeling of Herschel, IRAM, and CFHT observations

    astro-ph.GA 2026-07 unverdicted novelty 4.0

    3D modeling of L1506C with THEMIS 2 dust model shows evolved grains needed in densest regions, indicating early grain growth in prestellar phase.