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HCN (J=1-0) maser emission in the bright carbon star Y CVn

Published online by Cambridge University Press:  03 August 2017

Dinh-V-Trung ,
James R. Forster  and
Nguyen-Q-Rieu
Dinh-V-Trung
Affiliation:
Institute of Astronomy and Astrophysics, Academia Sinica P.O. Box 1-87 Nankang, Taipei 11529, Taiwan
James R. Forster
Affiliation:
UCLA-Berkeley, Hat Creek Radio Observatory 42233 Bidwell Rd Hat Creek, CA 96040, USA
Nguyen-Q-Rieu
Affiliation:
DEMIRM, Observatoire de Paris 61 Ave. de l'Observatoire, 75014 Paris, France

Abstract

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We present high resolution observations of HCN(J=1-0) line in the bright carbon star Y CVn. With an angular resolution of 0.5 arcsec we are able to resolve the HCN envelope around Y CVn. The HCN(J=1-0) line profile toward the central position exhibits several strong spikes having brightness temperature in excess of 1000 K. This result indicates that the J=1-0 line is masing. We also discuss the pump mechanism of this maser and the implication for the determination of the HCN abundance.

Type
Part 2. Stellar Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 340 - 342
Copyright
Copyright © Astronomical Society of the Pacific 2002 

References

Dinh-V-Trung, & Nguyen-Q-Rieu, 2000, A&A, 361, 601 Google Scholar
Izumiura, H., Ukita, N., Kawabe, R., et al. 1987, ApJL, 323, L81 Google Scholar
Izumiura, H., Ukita, N., & Tsuji, T. 1995a, ApJ, 440, 728 CrossRefGoogle Scholar
Izumiura, H., Fujiyoshi, A., & Ukita, N. 1995b, ApSS, 224, 493 Google Scholar
Lindqvist, M., Lucas, R., Olofsson, H., et al. 1995, ApSS, 224, 501 Google Scholar
Olofsson, H., Lindqvist, M., Gustafsson, B., & Carlström, U. 1993, ApJS, 87, 305 Google Scholar