A water maser associated with EU Andromedae - A carbon star near an oxygen-rich circumstellar shell

Details A water maser associated with EU Andromedae - A carbon star near an oxygen-rich circumstellar shell A water maser associated with EU Andromedae - A carbon star near an oxygen-rich circumstellar shell

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...316l..37b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 316, May 1, 1987, p. L37-L40. Research supported by

Astronomy and Astrophysics

Astronomy

38

Carbon Stars, Emission Spectra, Infrared Astronomy Satellite, Stellar Envelopes, Water Masers, Absorption Spectra, M Stars, Photosphere

Scientific paper

An H2O maser emission line at 22.2 GHz has been detected toward the carbon star EU And, confirming the conclusion based on analysis of IRAS spectra that this star is in the vicinity of an oxygen-rich circumstellar shell. The authors interpret the 24 km s-1 velocity difference between the H2O maser, measured at -29.4 km s-1, and the carbon star absorption line velocity of -53 km s-1 to be due to the orbital motion of the C star about an M star with a relatively thick circumstellar shell.

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