Herschel spectral surveys of star-forming regions. Overview of the 555-636 GHz range
Artikel i vetenskaplig tidskrift, 2010
High resolution line spectra of star-forming regions are mines of information: they provide unique clues to reconstruct the chemical, dynamical, and physical structure of the observed source. We present the first results from the Herschel key project \ldquoChemical HErschel Surveys of Star forming regions\rdquo, CHESS. We report and discuss observations towards five CHESS targets, one outflow shock spot and four protostars with luminosities bewteen 20 and 2 \times 10^5 L\_\.o: L1157-B1, IRAS 16293-2422, OMC2-FIR4, AFGL 2591, and NGC 6334I. The observations were obtained with the heterodyne spectrometer HIFI on board Herschel, with a spectral resolution of 1 MHz. They cover the frequency range 555-636 GHz, a range largely unexplored before the launch of the Herschel satellite. A comparison of the five spectra highlights spectacular differences in the five sources, for example in the density of methanol lines, or the presence/absence of lines from S-bearing molecules or deuterated species. We discuss how these differences can be attributed to the different star-forming mass or evolutionary status.
Författare
C. Ceccarelli
Laboratoire d'Astrophysique de Bordeaux
Université Grenoble Alpes
Institut National des Sciences de l'Univers
A. Bacmann
Université Grenoble Alpes
Laboratoire d'Astrophysique de Bordeaux
Institut National des Sciences de l'Univers
A. Boogert
California Institute of Technology (Caltech)
E. Caux
Universite Paul Sabatier Toulouse III
Institut National des Sciences de l'Univers
C. Dominik
Anton Pannekoek Institute for Astronomy
Radboud Universiteit
B. Lefloch
Université Grenoble Alpes
D. Lis
California Institute of Technology (Caltech)
P. Schilke
Universität zu Köln
Max-Planck-Gesellschaft
F. F. S. van der Tak
Rijksuniversiteit Groningen
Netherlands Institute for Space Research (SRON)
P. Caselli
Istituto di Fisica dello Spazio Interplanetario, Rome
University of Leeds
J. Cernicharo
Centro de Astrobiologia (CAB)
C. Codella
Osservatorio Astrofisico di Arcetri
C. Comito
Max-Planck-Gesellschaft
A. Fuente
Observatorio Astronómico Nacional (OAN)
A. Baudry
Laboratoire d'Astrophysique de Bordeaux
Institut National des Sciences de l'Univers
T. A. Bell
California Institute of Technology (Caltech)
M. Benedettini
Istituto di Fisica dello Spazio Interplanetario, Rome
E. A. Bergin
University of Michigan
G. A. Blake
California Institute of Technology (Caltech)
S. Bottinelli
Institut National des Sciences de l'Univers
Universite Paul Sabatier Toulouse III
S. Cabrit
Ecole Normale Superieure (ENS)
A. Castets
Institut National des Sciences de l'Univers
Université Grenoble Alpes
Laboratoire d'Astrophysique de Bordeaux
A. Coutens
Universite Paul Sabatier Toulouse III
Institut National des Sciences de l'Univers
N. Crimier
Centro de Astrobiologia (CAB)
Université Grenoble Alpes
K. Demyk
Institut National des Sciences de l'Univers
Universite Paul Sabatier Toulouse III
P. Encrenaz
Ecole Normale Superieure (ENS)
E. Falgarone
Ecole Normale Superieure (ENS)
M. Gerin
Ecole Normale Superieure (ENS)
P. F. Goldsmith
Jet Propulsion Laboratory, California Institute of Technology
F. Helmich
Netherlands Institute for Space Research (SRON)
P. Hennebelle
Ecole Normale Superieure (ENS)
T. Henning
Max-Planck-Gesellschaft
E. Herbst
Ohio State University
P. Hily-Blant
Université Grenoble Alpes
T. Jacq
Laboratoire d'Astrophysique de Bordeaux
Institut National des Sciences de l'Univers
C. Kahane
Université Grenoble Alpes
M. Kama
Anton Pannekoek Institute for Astronomy
A. Klotz
Universite Paul Sabatier Toulouse III
Institut National des Sciences de l'Univers
W. D. Langer
Jet Propulsion Laboratory, California Institute of Technology
S. Lord
California Institute of Technology (Caltech)
A. Lorenzani
Osservatorio Astrofisico di Arcetri
S. Maret
Université Grenoble Alpes
G. J. Melnick
Harvard-Smithsonian Center for Astrophysics
D. A. Neufeld
Johns Hopkins University
B. Nisini
Osservatorio Astronomico di Roma
S. Pacheco
Université Grenoble Alpes
L. Pagani
Ecole Normale Superieure (ENS)
B. Parise
Max-Planck-Gesellschaft
J. C. Pearson
Jet Propulsion Laboratory, California Institute of Technology
T. Phillips
California Institute of Technology (Caltech)
M. Salez
Ecole Normale Superieure (ENS)
P. Saraceno
Istituto di Fisica dello Spazio Interplanetario, Rome
K. Schuster
Institut de Radioastronomie Millimétrique (IRAM)
X. Tielens
Universiteit Leiden
M. H. D. van der Wiel
Netherlands Institute for Space Research (SRON)
Rijksuniversiteit Groningen
C. Vastel
Institut National des Sciences de l'Univers
Universite Paul Sabatier Toulouse III
S. Viti
University College London (UCL)
V. Wakelam
Institut National des Sciences de l'Univers
Laboratoire d'Astrophysique de Bordeaux
A. Walters
Institut National des Sciences de l'Univers
Universite Paul Sabatier Toulouse III
F. Wyrowski
Max-Planck-Gesellschaft
H. W. Yorke
Jet Propulsion Laboratory, California Institute of Technology
René Liseau
Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik
Michael Olberg
Chalmers, Institutionen för radio- och rymdvetenskap, Nationella anläggningen för radioastronomi
R. Szczerba
Polish Academy of Sciences
A. O. Benz
Eidgenössische Technische Hochschule Zürich (ETH)
M. Melchior
Institut für 4D-Technologien
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 521 1 L22+- L22Ämneskategorier
Astronomi, astrofysik och kosmologi
Fundament
Grundläggande vetenskaper
DOI
10.1051/0004-6361/201015081