Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986iraj...17..469w&link_type=abstract
(Astronomical Science Group of Ireland, Meeting, Queen's University of Belfast, Northern Ireland, Apr. 4, 1986) Irish Astronomic
Astronomy and Astrophysics
Astronomy
Cepheid Variables, Infrared Astronomy Satellite, Infrared Stars, Stellar Mass Ejection, Stellar Oscillations, Stellar Color, Stellar Evolution, Supergiant Stars
Scientific paper
Mass loss from cepheids is investigated in terms of the evolution and pulsation of cepheids. IR Point Source Catalogue data on galactic cepheids and nonvariable supergiants from IRAS (1985) are analyzed in terms of dereddened colors. The positions on two-color diagrams are compared to black-body curve positions. It is observed that nonvariable supergiants similar to cepheids and short-period cepheids are closely related to black-body objects. Analysis of the mass loss, which is estimated as about 10 to the -6th solar masses/yr, indicates that mass loss is associated with cepheid pulsation; however, the effect of mass loss in the course of stellar evolution from the cepheid phase is insignificant.
Deasy H. P.
Wayman Patrick A.
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