Herschel view of the Taurus B211/3 filament and striations: evidence of filamentary growth?
P. Palmeirim,Ph. André,Jason M. Kirk,Derek Ward-Thompson,Doris Arzoumanian,Vera Könyves,Vera Könyves,Pierre Didelon,Nicola Schneider,Nicola Schneider,M. Benedettini,Sylvain Bontemps,J. Di Francesco,J. Di Francesco,Davide Elia,Matthew Joseph Griffin,M. Hennemann,Tracey Hill,Peter G. Martin,Alexander Men'shchikov,Sergio Molinari,Frédérique Motte,Q. Nguyen Luong,David John Nutter,Nicolas Peretto,Stefano Pezzuto,A. Roy,Kazi L.J. Rygl,Luigi Spinoglio,G. L. White,G. L. White +30 more
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TLDR
In this article, the results from the Herschel Gould Belt survey for the B211/L1495 region in the Taurus molecular cloud were presented, which revealed the structure of the dense, star-forming filament B211 with unprecedented detail, along with the presence of striations perpendicular to the filament.Abstract:
We present first results from the Herschel Gould Belt survey for the B211/L1495 region in the Taurus molecular cloud. Thanks to their high sensitivity and dynamic range, the Herschel images reveal the structure of the dense, star-forming filament B211 with unprecedented detail, along with the presence of striations perpendicular to the filament and generally oriented along the magnetic field direction as traced by optical polarization vectors. Based on the column density and dust temperature maps derived from the Herschel data, we find that the radial density profile of the B211 filament approaches power-law behavior, ρ ∝ r−2.0± 0.4, at large radii and that the temperature profile exhibits a marked drop at small radii. The observed density and temperature profiles of the B211 filament are in good agreement with a theoretical model of a cylindrical filament undergoing gravitational contraction with a polytropic equation of state: P ∝ ργ and T ∝ ργ−1, with γ = 0.97 ± 0.01 < 1 (i.e., not strictly isothermal). The morphology of the column density map, where some of the perpendicular striations are apparently connected to the B211 filament, further suggests that the material may be accreting along the striations onto the main filament. The typical velocities expected for the infalling material in this picture are ~0.5–1 km s-1, which are consistent with the existing kinematical constraints from previous CO observations.read more
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Journal ArticleDOI
A census of dense cores in the Aquila cloud complex: SPIRE/PACS observations from the Herschel Gould Belt survey
Vera Könyves,Vera Könyves,Ph. André,Alexander Men'shchikov,P. Palmeirim,Doris Arzoumanian,Doris Arzoumanian,Nicola Schneider,Nicola Schneider,A. Roy,P. Didelon,Anaëlle Maury,Yoshito Shimajiri,J. Di Francesco,J. Di Francesco,Sylvain Bontemps,Nicolas Peretto,Nicolas Peretto,Milena Benedettini,J.-Ph. Bernard,J.-Ph. Bernard,Davide Elia,Matthew James Griffin,T. Hill,Jason M. Kirk,Bilal Ladjelate,Kenneth A. Marsh,Peter G. Martin,Frédérique Motte,Q. Nguyen Luong,Q. Nguyen Luong,Stefano Pezzuto,Helene Roussel,Kazi L.J. Rygl,Kazi L.J. Rygl,Sarah Sadavoy,Sarah Sadavoy,Sarah Sadavoy,E. Schisano,L. Spinoglio,Derek Ward-Thompson,Glenn J. White,Glenn J. White +42 more
TL;DR: In this article, the results of the Herschel Gould Belt survey (HGBS) observations in an ~11 deg2 area of the Aquila molecular cloud complex at d ~ 260 pc, imaged with the SPIRE and PACS photometric cameras in parallel mode from 70 μm to 500 μm.
Journal ArticleDOI
Cores, filaments, and bundles: hierarchical core formation in the L1495/B213 Taurus region
TL;DR: In this article, the authors studied the 10 pc-long L1495/B213 complex in Taurus to investigate how dense cores have condensed out of the lower density cloud material.
Journal ArticleDOI
Planck intermediate results: XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds
Peter A. R. Ade,Nabila Aghanim,M. I. R. Alves,M. Arnaud,D. Arzoumanian,M. Ashdown,J. Aumont,Carlo Baccigalupi,A. J. Banday,A. J. Banday,R. B. Barreiro,Nicola Bartolo,Nicola Bartolo,E. Battaner,K. Benabed,Alain Benoit,A. Benoit-Lévy,A. Benoit-Lévy,J.-P. Bernard,J.-P. Bernard,Marco Bersanelli,P. Bielewicz,P. Bielewicz,J. J. Bock,Laura Bonavera,J. R. Bond,Julian Borrill,F. R. Bouchet,F. Boulanger,Andrea Bracco,Carlo Burigana,Carlo Burigana,Erminia Calabrese,Jean-François Cardoso,Jean-François Cardoso,Jean-François Cardoso,A. Catalano,A. Catalano,H. C. Chiang,P. R. Christensen,L. P. L. Colombo,C. Combet,F. Couchot,B. P. Crill,A. Curto,F. Cuttaia,Luigi Danese,R. D. Davies,R. J. Davis,P. de Bernardis,A. de Rosa,G. de Zotti,G. de Zotti,Jacques Delabrouille,Clive Dickinson,Jose M. Diego,Herve Dole,Herve Dole,S. Donzelli,O. Doré,Marian Douspis,A. Ducout,A. Ducout,X. Dupac,George Efstathiou,F. Elsner,F. Elsner,Torsten A. Enßlin,H. K. Eriksen,Diego Falceta-Gonçalves,E. Falgarone,Katia Ferrière,Katia Ferrière,Fabio Finelli,Olivier Forni,Olivier Forni,M. Frailis,Aurelien A. Fraisse,E. Franceschi,A. Frejsel,S. Galeotta,S. Galli,K. Ganga,Tuhin Ghosh,M. Giard,M. Giard,E. Gjerløw,J. González-Nuevo,J. González-Nuevo,Krzysztof M. Gorski,A. Gregorio,A. Gregorio,Alessandro Gruppuso,Jon E. Gudmundsson,Vincent Guillet,D. L. Harrison,George Helou,Patrick Hennebelle,Sophie Henrot-Versille,C. Hernández-Monteagudo,D. Herranz,S. R. Hildebrandt,E. Hivon,W. A. Holmes,Allan Hornstrup,Kevin M. Huffenberger,G. Hurier,Andrew H. Jaffe,T. R. Jaffe,T. R. Jaffe,W. C. Jones,Mika Juvela,E. Keihänen,Reijo Keskitalo,Theodore Kisner,J. Knoche,Martin Kunz,Martin Kunz,Martin Kunz,Hannu Kurki-Suonio,Guilaine Lagache,Guilaine Lagache,J.-M. Lamarre,Anthony Lasenby,Massimiliano Lattanzi,Charles R. Lawrence,R. Leonardi,François Levrier,Michele Liguori,Michele Liguori,P. B. Lilje,M. Linden-Vørnle,M. López-Caniego,M. López-Caniego,Philip Lubin,J. F. Macías-Pérez,Davide Maino,Nazzareno Mandolesi,A. Mangilli,Michele Maris,Peter G. Martin,E. Martínez-González,Silvia Masi,Sabino Matarrese,Sabino Matarrese,Alessandro Melchiorri,L. Mendes,A. Mennella,M. Migliaccio,Marc-Antoine Miville-Deschênes,Marc-Antoine Miville-Deschênes,A. Moneti,L. Montier,L. Montier,Gianluca Morgante,Daniel J. Mortlock,Dipak Munshi,J. A. Murphy,Pavel Naselsky,Federico Nati,Calvin B. Netterfield,F. Noviello,Dmitry Novikov,I. D. Novikov,Niels Oppermann,Carol Anne Oxborrow,L. Pagano,F. Pajot,Roberta Paladini,Daniela Paoletti,Fabio Pasian,L. Perotto,Valeria Pettorino,F. Piacentini,M. Piat,Elena Pierpaoli,Davide Pietrobon,Stéphane Plaszczynski,Etienne Pointecouteau,Etienne Pointecouteau,G. Polenta,Nicolas Ponthieu,Nicolas Ponthieu,G. W. Pratt,Simon Prunet,Jean-Loup Puget,Jörg P. Rachen,Martin Reinecke,Mathieu Remazeilles,C. Renault,A. Renzi,I. Ristorcelli,I. Ristorcelli,Graca Rocha,M. Rossetti,G. Roudier,Jose Alberto Rubino-Martin,Ben Rusholme,M. Sandri,D. Santos,M. Savelainen,Giorgio Savini,Douglas Scott,Juan D. Soler,V. Stolyarov,R. V. Sudiwala,D. Sutton,A.-S. Suur-Uski,J.-F. Sygnet,J. A. Tauber,Luca Terenzi,L. Toffolatti,L. Toffolatti,L. Toffolatti,M. Tomasi,Matthieu Tristram,M. Tucci,G. Umana,Luca Valenziano,Jussi Valiviita,B. Van Tent,P. Vielva,F. Villa,Lawrence A. Wade,B. D. Wandelt,B. D. Wandelt,Ingunn Kathrine Wehus,Nathalie Ysard,D. Yvon,Andrea Zonca +229 more
TL;DR: In this paper, the relative orientation between the magnetic field projected on the plane of sky, inferred from the polarized thermal emission of Galactic dust observed by Planck at 353 GHz, and the gas column density structures, quantified by the gradient of the column density, was evaluated pixel by pixel and analysed in bins of column density using the novel statistical tool called "histogram of relative orientations".
Journal ArticleDOI
What Determines the Density Structure of Molecular Clouds? A Case Study of Orion B with Herschel
Nicola Schneider,Nicola Schneider,Ph. André,Vera Könyves,Vera Könyves,Sylvain Bontemps,Frédérique Motte,Christoph Federrath,Christoph Federrath,Derek Ward-Thompson,Doris Arzoumanian,Doris Arzoumanian,M. Benedettini,Eli Bressert,Pierre Didelon,J. Di Francesco,Matthew Joseph Griffin,M. Hennemann,Tracey Hill,P. Palmeirim,Stefano Pezzuto,Nicolas Peretto,A. Roy,Kazi L.J. Rygl,L. Spinoglio,Glenn J. White +25 more
TL;DR: In this article, the authors make use of probability distribution functions (PDFs) of Herschel column density maps of Orion B, Aquila, and Polaris, obtained with the Herschel Gould Belt survey (HGBS).
Journal ArticleDOI
An imprint of molecular cloud magnetization in the morphology of the dust polarized emission
Juan D. Soler,Patrick Hennebelle,Peter G. Martin,Marc-Antoine Miville-Deschênes,Marc-Antoine Miville-Deschênes,Calvin B. Netterfield,Laura M. Fissel +6 more
TL;DR: In this paper, the authors describe a morphological imprint of magnetization found when considering the relative orientation of the magnetic field direction with respect to the density structures in simulated turbulent molecular clouds.
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