Characteristics of the H2O emission from Mira variables

Details Characteristics of the H2O emission from Mira variables Characteristics of the H2O emission from Mira variables

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....56..219l&link_type=abstract

Astronomy and Astrophysics, vol. 56, no. 1-2, Apr. 1977, p. 219-226. Research supported by the Conselho Nacional de Pesquisas,

Astronomy and Astrophysics

Astrophysics

28

Dwarf Stars, Late Stars, M Stars, Mira Variables, Variable Stars, Water Masers, Astronomical Catalogs, Spectral Line Width, Stellar Envelopes, Stellar Models

Scientific paper

Absolute fluxes at maximum in the 1.35 cm water-vapor line were estimated for the H2O mira variables by correcting observed fluxes for the distances of the stars and phase at the epochs of observations. The average photon rate at maximum is 4 x 10 to 43rd power photons/sec, with a small dispersion. This small dispersion is interpreted in terms of the model of spherically symmetric expanding envelope. Proximity of the star as major criterion for detection of H2O emission in Miras is inferred from the small dispersion. Nine new H2O-Miras were discovered, seven of which belong to the list of Miras closer than about 320 pc.

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