Position confirmation of water maser emission from V778 Cygni, a carbon star

Details Position confirmation of water maser emission from V778 Cygni, a carbon star Position confirmation of water maser emission from V778 Cygni, a carbon star

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325..795d&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 15, 1988, p. 795-797.

Astronomy and Astrophysics

Astrophysics

21

Carbon Stars, Interstellar Masers, Stellar Radiation, Water Masers, Oxygen, Stellar Composition, Stellar Envelopes

Scientific paper

Water maser emission toward the carbon star V778 Cyg has been detected. The authors have obtained a precise measurement of the position of water maser emission by utilizing the five-element interferometer at Nobeyama. The position of the water maser emission is confirmed to coincide with the position of the optical star to within an accuracy of 0arcsec.5. This supports the premise that the maser emission comes from an oxygen-rich circumstellar envelope that accompanies a carbon star. The implication of this strange circumstellar chemistry is discussed from the viewpoint of late-stage stellar evolution.

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