Photometric Studies of Magellanic Cloud Supergiants. II. Variability

Details Photometric Studies of Magellanic Cloud Supergiants. II. Variability Photometric Studies of Magellanic Cloud Supergiants. II. Variability

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apjs...62..451g&link_type=abstract

Astrophysical Journal Supplement v.62, p.451

Astronomy and Astrophysics

Astronomy

13

Galaxies: Magellanic Clouds, Stars: Cepheids, Stars: Supergiants, Stars: Variables

Scientific paper

Individual BVRI photoelectric observations for 88 LMC and 46 SMC intermediate spectral type supergiants, presented in a companion paper (Grieve and Madore 1986), are analyzed for variability. It is found that 45% of the stars show statistically significant variations, with the incidence of variability decreasing with decreasing luminosity and apparently not being a strong function of spectral type. Several candidates for low-amplitude Cepheids are noted, but the incompleteness of the spectral type survey catalogs predudes any definition of the precise boundaries of the Cepheid instability strip at high luminosities based on these data alone.

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