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Broadband analysis techniques for Herschel/HIFI spectral surveys of chemically rich star-forming regions

Neill, Justin L. and Bergin, Edwin A. and Lis, Dariusz C. and Phillips, Thomas G. and Emprechtinger, Martin and Schilke, Peter (2012) Broadband analysis techniques for Herschel/HIFI spectral surveys of chemically rich star-forming regions. Journal of Molecular Spectroscopy, 280 (S1). pp. 150-154. ISSN 0022-2852. doi:10.1016/j.jms.2012.06.016.

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The Heterodyne Instrument for the Far Infrared (HIFI) aboard the Herschel Space Observatory has acquired high-resolution broadband molecular spectra of star-forming regions in a wavelength range that is mostly inaccessible from ground-based astronomical observatories. These spectral surveys provide new insight into the chemical composition and physical properties of molecular clouds. In this manuscript, we present initial results from the HIFI spectral survey of the Sagittarius B2(N) molecular cloud, which contains spectral features assigned to at least 40 different molecules in a range of physical environments. While extensive line blending is observed due to the chemical complexity of this region, reliable molecular line identifications can be made, down to the noise floor, due to the large number of transitions detected for each species in the 1.2 THz survey bandwidth. This allows for the extraction of new weakly emitting species from the line forest. These HIFI surveys will be an invaluable archival resource for future investigations into interstellar chemistry.

Item Type:Article
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URLURL TypeDescription
Bergin, Edwin A.0000-0003-4179-6394
Lis, Dariusz C.0000-0002-0500-4700
Schilke, Peter0000-0003-2141-5689
Additional Information:© 2012 Elsevier Inc. Available online 10 July 2012. HIFI has been designed and built by a consortium of institutes and university departments from across Europe, Canada, and the United States under the leadership of SRON Netherlands Institute for Space Research, Groningen, The Netherlands and with major contributions from Germany, France, and the US. Consortium members are: Canada: CSA, U. Waterloo; France: CESR, LAB, LERMA, IRAM; Germany: KOSMA, MPIfR, MPS; Ireland: NUI Maynooth; Italy: ASI, IFSI-INAF, Osservatorio Astrofisico di Arcetri-INAF; Netherlands: SRON, TUD; Poland: CAMK, CBK; Spain: Observatorio Astronómico Nacional (IGN), Centro de Astrobiología (CSIC-INTA); Sweden: Chalmers University of Technology–MC2, RSS & GARD, Onsala Space Observatory, Swedish National Space Board, Stockholm Observatory; Switzerland: ETH Zurich, FHNW; USA: Caltech, JPL, NHSC. Support for this work was provided by NASA through an award issued by JPL/Caltech.
Funding AgencyGrant Number
Subject Keywords:Millimeter-wave spectroscopy; Astrochemistry; Interstellar molecules; Methanol
Issue or Number:S1
Record Number:CaltechAUTHORS:20121211-134726969
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Official Citation:Justin L. Neill, Edwin A. Bergin, Dariusz C. Lis, Thomas G. Phillips, Martin Emprechtinger, Peter Schilke, Broadband analysis techniques for Herschel/HIFI spectral surveys of chemically rich star-forming regions, Journal of Molecular Spectroscopy, Volume 280, October 2012, Pages 150-154, ISSN 0022-2852, 10.1016/j.jms.2012.06.016. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35914
Deposited By: Ruth Sustaita
Deposited On:11 Dec 2012 22:18
Last Modified:09 Nov 2021 23:18

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