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

Universite Grenoble Alpes

Institut National des Sciences de l'Univers

Laboratoire d'Astrophysique de Bordeaux

A. Bacmann

Universite Grenoble Alpes

Institut National des Sciences de l'Univers

Laboratoire d'Astrophysique de Bordeaux

A. Boogert

California Institute of Technology

E. Caux

Universite Paul Sabatier Toulouse III

Institut National des Sciences de l'Univers

C. Dominik

Astronomical Institute Anton Pannekoek

Radboud University Nijmegen

B. Lefloch

Universite Grenoble Alpes

D. Lis

California Institute of Technology

P. Schilke

Universitat zu Koln

Max Planck-institutet

F. F. S. van der Tak

SRON Netherlands Institute for Space Research

University of Groningen, Kapteyn Astronomical Institute

P. Caselli

University of Leeds

Istituto di Fisica dello Spazio Interplanetario, Rome

J. Cernicharo

CSIC-INTA - Centro de Astrobiologia (CAB)

C. Codella

Osservatorio Astrofisico Di Arcetri

C. Comito

Max Planck-institutet

A. Fuente

Observatorio Astronomico Nacional

A. Baudry

Institut National des Sciences de l'Univers

Laboratoire d'Astrophysique de Bordeaux

T. A. Bell

California Institute of Technology

M. Benedettini

Istituto di Fisica dello Spazio Interplanetario, Rome

E. A. Bergin

University Michigan Ann Arbor

G. A. Blake

California Institute of Technology

S. Bottinelli

Universite Paul Sabatier Toulouse III

Institut National des Sciences de l'Univers

S. Cabrit

École Normale Supérieure

A. Castets

Laboratoire d'Astrophysique de Bordeaux

Institut National des Sciences de l'Univers

Universite Grenoble Alpes

A. Coutens

Universite Paul Sabatier Toulouse III

Institut National des Sciences de l'Univers

N. Crimier

CSIC-INTA - Centro de Astrobiologia (CAB)

Universite Grenoble Alpes

K. Demyk

Universite Paul Sabatier Toulouse III

Institut National des Sciences de l'Univers

P. Encrenaz

École Normale Supérieure

E. Falgarone

École Normale Supérieure

M. Gerin

École Normale Supérieure

P. F. Goldsmith

Jet Propulsion Laboratory, California Institute of Technology

F. Helmich

SRON Netherlands Institute for Space Research

P. Hennebelle

École Normale Supérieure

T. Henning

Max Planck-institutet

E. Herbst

Ohio State University

P. Hily-Blant

Universite Grenoble Alpes

T. Jacq

Institut National des Sciences de l'Univers

Laboratoire d'Astrophysique de Bordeaux

C. Kahane

Universite Grenoble Alpes

M. Kama

Astronomical Institute Anton Pannekoek

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

A. Lorenzani

Osservatorio Astrofisico Di Arcetri

S. Maret

Universite Grenoble Alpes

G. J. Melnick

Harvard-Smithsonian Center for Astrophysics

D. A. Neufeld

Johns Hopkins University

B. Nisini

Osservatorio Astronomico di Roma

S. Pacheco

Universite Grenoble Alpes

L. Pagani

École Normale Supérieure

B. Parise

Max Planck-institutet

J. C. Pearson

Jet Propulsion Laboratory, California Institute of Technology

T. Phillips

California Institute of Technology

M. Salez

École Normale Supérieure

P. Saraceno

Istituto di Fisica dello Spazio Interplanetario, Rome

K. Schuster

IRAM Institut de RadioAstronomie Millimetrique

X. Tielens

Leiden Observatory Research Institute

M. H. D. van der Wiel

University of Groningen, Kapteyn Astronomical Institute

SRON Netherlands Institute for Space Research

C. Vastel

Institut National des Sciences de l'Univers

Universite Paul Sabatier Toulouse III

S. Viti

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-institutet

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

Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences

A. O. Benz

ETH Zurich

M. Melchior

Institut für 4D-Technologien

Astronomy and Astrophysics

0004-6361 (ISSN) 1432-0746 (eISSN)

Vol. 521 L22+- L22

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

DOI

10.1051/0004-6361/201015081