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A census of dense cores in the Taurus L1495 cloud from the Herschel Gould Belt Survey

Authors :
Glenn J. White
Ph. André
Stefano Pezzuto
Alexander Men'shchikov
P. Palmeirim
M. Benedettini
Matthew Joseph Griffin
D. Bresnahan
J. Di Francesco
A. Roy
Sarah Sadavoy
Kenneth A. Marsh
Davide Elia
Nicola Schneider
Luigi Spinoglio
Jason M. Kirk
Derek Ward-Thompson
Nicolas Peretto
Frédérique Motte
Vera Könyves
University of California [Los Angeles] (UCLA)
University of California (UC)
Jeremiah Horrocks Insitute
University of Central Lancashire [Preston] (UCLAN)
Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112))
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
School of Physics and Astronomy [Cardiff]
Cardiff University
Département d'Astrophysique (ex SAP) (DAP)
Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
Jeremiah Horrocks Institute for Mathematics, Physics and Astronomy [Preston]
Istituto di Astrofisica e Planetologia Spaziali - INAF (IAPS)
Istituto Nazionale di Astrofisica (INAF)
Department of Physics and Astronomy [Victoria]
University of Victoria [Canada] (UVIC)
Faculty of Informatics [Lugano]
Università della Svizzera italiana = University of Italian Switzerland (USI)
Laboratoire Pierre Aigrain (LPA)
Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS)
École normale supérieure - Paris (ENS-PSL)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Herzberg Institute of Astrophysics
National Research Council of Canada (NRC)
University Hospital of Cologne [Cologne]
FORMATION STELLAIRE 2016
Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB)
Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
SLAC National Accelerator Laboratory (SLAC)
Stanford University
University of California
Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112))
Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)
Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS)
Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)
Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
Università della Svizzera italiana (USI)
Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)
Stanford Linear Accelerator Center (SLAC)
Stanford University [Stanford]
Source :
Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 2016, 459 (1), pp.342--356. ⟨10.1093/mnras/stw301⟩, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 459 (1), pp.342--356. ⟨10.1093/mnras/stw301⟩
Publication Year :
2016

Abstract

We present a catalogue of dense cores in a $\sim 4^\circ\times2^\circ$ field of the Taurus star-forming region, inclusive of the L1495 cloud, derived from Herschel SPIRE and PACS observations in the 70 $\mu$m, 160 $\mu$m, 250 $\mu$m, 350 $\mu$m, and 500 $\mu$m continuum bands. Estimates of mean dust temperature and total mass are derived using modified blackbody fits to the spectral energy distributions. We detect 525 starless cores of which $\sim10$-20% are gravitationally bound and therefore presumably prestellar. Our census of unbound objects is $\sim85$% complete for $M>0.015\,M_\odot$ in low density regions ($A_V\stackrel{0.1\,M_\odot$ overall. The prestellar core mass function (CMF) is consistent with lognormal form, resembling the stellar system initial mass function, as has been reported previously. All of the inferred prestellar cores lie on filamentary structures whose column densities exceed the expected threshold for filamentary collapse, in agreement with previous reports. Unlike the prestellar CMF, the unbound starless CMF is not lognormal, but instead is consistent with a power-law form below $0.3\,M_\odot$ and shows no evidence for a low-mass turnover. It resembles previously reported mass distributions for CO clumps at low masses ($M\stackrel{<br />Comment: 17 pages, 12 figures. Accepted for publication in MNRAS

Details

Language :
English
ISSN :
00358711 and 13652966
Database :
OpenAIRE
Journal :
Monthly Notices of the Royal Astronomical Society, Monthly Notices of the Royal Astronomical Society, 2016, 459 (1), pp.342--356. ⟨10.1093/mnras/stw301⟩, Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 459 (1), pp.342--356. ⟨10.1093/mnras/stw301⟩
Accession number :
edsair.doi.dedup.....2b4df591dcc10d020c51279ef5ed8d6a