Herschel/HIFI discovery of interstellar chloronium (H2Cl+)
Artikel i vetenskaplig tidskrift, 2010

We report the first detection of chloronium, H_2Cl^+, in the interstellar medium, using the HIFI instrument aboard the Herschel Space Observatory. The 2_12-1_01 lines of ortho-H\_2^35Cl^+ and ortho-H\_2^37Cl^+ are detected in absorption towards NGC 6334I, and the 1_11-0_00 transition of para-H\_2^35Cl^+ is detected in absorption towards NGC 6334I and Sgr B2(S). The H_2Cl^+ column densities are compared to those of the chemically-related species HCl. The derived HCl/H_2Cl^+ column density ratios, ~1-10, are within the range predicted by models of diffuse and dense photon dominated regions (PDRs). However, the observed H_2Cl^+ column densities, in excess of 10^13 cm^-2, are significantly higher than the model predictions. Our observations demonstrate the outstanding spectroscopic capabilities of HIFI for detecting new interstellar molecules and providing key constraints for astrochemical models.

submillimetre: ISM

astrochemistry

molecular processes

Line: identification

ISM: abundances

ISM: molecules

Författare

D. C. Lis

Jet Propulsion Laboratory, California Institute of Technology

J. C. Pearson

Jet Propulsion Laboratory, California Institute of Technology

D. A. Neufeld

Johns Hopkins University

P. Schilke

Universität zu Köln

H. S. P. Müller

Universität zu Köln

H. Gupta

National Science Foundation

T. A. Bell

Centro de Astrobiología (INTA-CSIC)

C. Comito

Forschungszentrum Jülich

T. G. Phillips

California Institute of Technology (Caltech)

E. A. Bergin

University of Michigan

C. Ceccarelli

Université Grenoble Alpes

P. F. Goldsmith

Jet Propulsion Laboratory, California Institute of Technology

G. A. Blake

California Institute of Technology (Caltech)

A. Bacmann

Université Grenoble Alpes

A. Baudry

Université de Bordeaux

M. Benedettini

Istituto nazionale di astrofisica (INAF)

A. Benz

Fachhochschule Nordwestschweiz

John H Black

Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik

A. Boogert

University of Hawaii

S. Bottinelli

Universite Paul Sabatier Toulouse III

S. Cabrit

Observatoire de Paris

P. Caselli

Max-Planck-Institut für extraterrestrische Physik

A. Castets

Université Grenoble Alpes

E. Caux

Universite Paul Sabatier Toulouse III

J. Cernicharo

CSIC - Instituto de Fisica Fundamental (IFF)

C. Codella

Osservatorio Astrofisico di Arcetri

A. Coutens

Université de Bordeaux

N. Crimier

ProbaYes SAS

N. R. Crockett

California Institute of Technology (Caltech)

F. Daniel

Université Grenoble Alpes

K. Demyk

Universite Paul Sabatier Toulouse III

C. Dominic

Radboud Universiteit

M.-L. Dubernet

Observatoire de Paris

M. Emprechtinger

California Institute of Technology (Caltech)

P. Encrenaz

Observatoire de Paris

E. Falgarone

Ecole Normale Superieure (ENS)

A. Fuente

Observatorio Astronómico Nacional (OAN)

M. Gerin

Observatoire de Paris

T. F. Giesen

Universitat Kassel

J. R. Goicoechea

CSIC - Instituto de Fisica Fundamental (IFF)

F. Helmich

Rijksuniversiteit Groningen

P. Hennebelle

Ecole Normale Superieure (ENS)

T. Henning

Max-Planck Institut für Radioastronomie

E. Herbst

University of Virginia

P. Hily-Blant

Université Grenoble Alpes

Åke Hjalmarson

Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik

D. Hollenbach

SETI Institute

T. Jack

Université de Bordeaux

C. Joblin

National Museum of Botswana

D. Johnstone

University of Victoria

C. Kahane

Université Grenoble Alpes

M. Kama

University College London (UCL)

M. Kaufman

San Jose State University

A. Klotz

Universite Paul Sabatier Toulouse III

W. D. Langer

Jet Propulsion Laboratory, California Institute of Technology

B. Larsson

Stockholms universitet

J. Le Bourlot

Observatoire de Paris

B. Lefloch

Université Grenoble Alpes

F. Le Petit

Observatoire de Paris

D. Li

University of KwaZulu-Natal

René Liseau

Chalmers, Institutionen för radio- och rymdvetenskap, Radioastronomi och astrofysik

S. D. Lord

California Institute of Technology (Caltech)

A. Lorenzani

Istituto nazionale di astrofisica (INAF)

S. Maret

Université Grenoble Alpes

P. G. Martin

Institut canadien d'astrophysique théorique

G. J. Melnick

Harvard-Smithsonian Center for Astrophysics

K. M. Menten

Max-Planck Institut für Radioastronomie

P. Morris

California Institute of Technology (Caltech)

J. A. Murphy

Maynooth University

Z. Nagy

Konkoly Observatory

B. Nisini

Osservatorio Astronomico di Roma

V. Ossenkopf

Istituto nazionale di astrofisica (INAF)

S. Pacheco

Institut de Planetologie et d'Astrophysique de Grenoble

L. Pagani

Sorbonne Université

B. Parise

Max-Planck Institut für Radioastronomie

M. Pérault

Ecole Normale Superieure (ENS)

R. Plume

University of Calgary

S.-L. Qin

Yunnan University

E. Roueff

Observatoire de Paris

M. Salez

Centre national de la recherche scientifique (CNRS)

A. Sandqvist

Stockholms observatorium

P. Saraceno

Istituto nazionale di astrofisica (INAF)

S. Schlemmer

Universität zu Köln

K. Schuster

Institut de Radioastronomie Millimétrique (IRAM)

R. Snell

University of Massachusetts

J. Stutzki

Universität zu Köln

A. Tielens

Universiteit Leiden

N. Trappe

Maynooth University

F. F. S. van der Tak

Rijksuniversiteit Groningen

M. H. D. van der Wiel

Netherlands Institute for Radio Astronomy (ASTRON)

E. van Dishoeck

Universiteit Leiden

C. Vastel

Universite Paul Sabatier Toulouse III

S. Viti

Universiteit Leiden

V. Wakelam

Université de Bordeaux

A. Walters

Universite Paul Sabatier Toulouse III

S. Wang

University of Michigan

F. Wyrowski

Max-Planck Institut für Radioastronomie

H. W. Yorke

Universities Space Research Association

S. Yu

Jet Propulsion Laboratory, California Institute of Technology

J. Zmuidzinas

California Institute of Technology (Caltech)

Y. Delorme

Observatoire de Paris

J.-P. Desbat

Université de Bordeaux

R. Güsten

Max-Planck Institut für Radioastronomie

J.-M. Krieg

Sorbonne Université

B. Delforge

Rijksuniversiteit Groningen

Astronomy and Astrophysics

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

Vol. 521 1 L9

Ämneskategorier

Astronomi, astrofysik och kosmologi

Fundament

Grundläggande vetenskaper

DOI

10.1051/0004-6361/201014959

Mer information

Senast uppdaterat

2021-07-09