Herschel spectral surveys of star-forming regions. Overview of the 555-636 GHz range
Journal article, 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.
Author
C. Ceccarelli
Laboratoire d'Astrophysique de Bordeaux
Grenoble Alpes University
Institut National des Sciences de l'Univers
A. Bacmann
Grenoble Alpes University
Laboratoire d'Astrophysique de Bordeaux
Institut National des Sciences de l'Univers
A. Boogert
California Institute of Technology (Caltech)
E. Caux
Paul Sabatier University
Institut National des Sciences de l'Univers
C. Dominik
Anton Pannekoek Institute for Astronomy
Radboud University
B. Lefloch
Grenoble Alpes University
D. Lis
California Institute of Technology (Caltech)
P. Schilke
University of Cologne
Max Planck Society
F. F. S. van der Tak
University of 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
Arcetri Astrophysical Observatory
C. Comito
Max Planck Society
A. Fuente
Spanish National Observatory (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
Paul Sabatier University
S. Cabrit
Ecole Normale Superieure (ENS)
A. Castets
Institut National des Sciences de l'Univers
Grenoble Alpes University
Laboratoire d'Astrophysique de Bordeaux
A. Coutens
Paul Sabatier University
Institut National des Sciences de l'Univers
N. Crimier
Centro de Astrobiologia (CAB)
Grenoble Alpes University
K. Demyk
Institut National des Sciences de l'Univers
Paul Sabatier University
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 Society
E. Herbst
Ohio State University
P. Hily-Blant
Grenoble Alpes University
T. Jacq
Laboratoire d'Astrophysique de Bordeaux
Institut National des Sciences de l'Univers
C. Kahane
Grenoble Alpes University
M. Kama
Anton Pannekoek Institute for Astronomy
A. Klotz
Paul Sabatier University
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
Arcetri Astrophysical Observatory
S. Maret
Grenoble Alpes University
G. J. Melnick
Harvard-Smithsonian Center for Astrophysics
D. A. Neufeld
Johns Hopkins University
B. Nisini
Osservatorio Astronomico di Roma
S. Pacheco
Grenoble Alpes University
L. Pagani
Ecole Normale Superieure (ENS)
B. Parise
Max Planck Society
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
Leiden University
M. H. D. van der Wiel
Netherlands Institute for Space Research (SRON)
University of Groningen
C. Vastel
Institut National des Sciences de l'Univers
Paul Sabatier University
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
Paul Sabatier University
F. Wyrowski
Max Planck Society
H. W. Yorke
Jet Propulsion Laboratory, California Institute of Technology
René Liseau
Chalmers, Department of Radio and Space Science, Radio Astronomy and Astrophysics
Michael Olberg
Chalmers, Department of Radio and Space Science, National Facility for Radio Astronomy
R. Szczerba
Polish Academy of Sciences
A. O. Benz
Swiss Federal Institute of Technology in Zürich (ETH)
M. Melchior
Institut für 4D-Technologien
Astronomy and Astrophysics
0004-6361 (ISSN) 1432-0746 (eISSN)
Vol. 521 1 L22+- L22Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
DOI
10.1051/0004-6361/201015081