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Herschel-SPIRE FTS spectroscopy of the carbon-rich objects: AFGL 2688, AFGL 618, and NGC 7027

Wesson, R; Cernicharo, J; Barlow, MJ; Matsuura, M; Decin, L; Groenewegen, MAT; Polehampton, ET; ... Yates, JA; + view all (2010) Herschel-SPIRE FTS spectroscopy of the carbon-rich objects: AFGL 2688, AFGL 618, and NGC 7027. Astronomy and Astrophysics , 518 , Article L144. 10.1051/0004-6361/201014589. Green open access

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Abstract

We present far-infrared and submillimetre spectra of three carbon-rich evolved objects, AFGL 2688, AFGL 618 and NGC 7027. The spectra were obtained with the SPIRE Fourier-transform spectrometer on board the Herschel Space Observatory, and cover wavelengths from 195-670 ìm, a region of the electromagnetic spectrum hitherto difficult to study in detail. The far infrared spectra of these objects are rich and complex, and we measure over 150 lines in each object. Lines due to 18 different species are detected. We determine physical conditions from observations of the rotational lines of several molecules, and present initial large velocity gradient models for AFGL 618. We detect water in AFGL 2688 for the first time, and confirm its presence in AFGL 618 in both ortho and para forms. In addition, we report the detection of the J = 1-0 line of CH+ in NGC 7027. © 2010 ESO.

Type: Article
Title: Herschel-SPIRE FTS spectroscopy of the carbon-rich objects: AFGL 2688, AFGL 618, and NGC 7027
Open access status: An open access version is available from UCL Discovery
DOI: 10.1051/0004-6361/201014589
Publisher version: https://doi.org/10.1051/0004-6361/201014589
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Computer Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10095521
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