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The ISO/LWS spectrum of the Egg nebula, AFGL 2688

Cox, P; GonzalezAlfonso, E; Barlow, MJ; Liu, XW; Lim, T; Swinyard, BM; Cernicharo, J; ... Serra, G; + view all (1996) The ISO/LWS spectrum of the Egg nebula, AFGL 2688. Astronomy & Astrophysics , 315 (2) L265-L268. Green open access

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Abstract

We present an ISO Long Wavelength Spectrometer (LWS) grating spectrum of the carbon-rich proto-planetary nebula AFGL 2688 between 43 and 194μm. The far-infrared spectrum of AFGL 2688 is dominated by strong rotational transitions of CO which are detected from J=14-13 up to J=23-22. The atomic fine structure lines [O I] and [C II] are not detected. This is consistent with the cool central star of AFGL 2688 not having yet photodissociated the molecular gas ejected during the AGB phase. The far-infrared CO emission in AFGL 2688 appears to originate in shocked dense gas at a temperature of ~400K.

Type: Article
Title: The ISO/LWS spectrum of the Egg nebula, AFGL 2688
Open access status: An open access version is available from UCL Discovery
Publisher version: https://ui.adsabs.harvard.edu/abs/1996A%26A...315L...
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.
Keywords: planetary nebulae, general, planetary nebulae, individual (AFGL 2688), interstellar medium, molecules, CRL-2688, DUST, AFGL-2688
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 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/10096121
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