Positions and distributions of water masers around late-type stars

Details Positions and distributions of water masers around late-type stars Positions and distributions of water masers around late-type stars

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aj....105..284b&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 105, no. 1, p. 284-300.

Astronomy and Astrophysics

Astronomy

59

Interstellar Masers, Late Stars, Stellar Envelopes, Supergiant Stars, Water Masers, Angular Resolution, High Resolution, Position (Location)

Scientific paper

The circumstellar-shell water masers of the supergiant stars VY CMa and VX Sgr, as well as the four M giant stars IK Tau, RT Vir, W Hya, and RX Boo) have been observed with high angular resolution. The maser distributions are generally asymmetric relative to the estimated stellar positions. The absolute positions of the water masers toward these stars have been determined with a rms accuracy of 0.1 arcsec; the estimates stellar positions agree with astrometric optical positions at this level of accuracy.

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