SIMBAD references

2000MNRAS.313..868J - Mon. Not. R. Astron. Soc., 313, 868-880 (2000/April-3)

Period-luminosity relations for red supergiant variables - II. The distance to M 101.


Abstract (from CDS):

We report the discovery of 42 red supergiant variables (RSVs) in the late-type spiral galaxy M101. Periods for the luminosity variation of these RSVs were determined from 20 epochs of ground-based CCD photometry in the Kron-Cousins R band obtained with the KPNO 2.1-m and WIYN 3.5-m telescopes over a span of three years. The periods found were in the range 200-1300days. Using the relationship between the RSV periods and their luminosity in the Kron-Cousins I band, we estimate a reddening-corrected distance modulus to M101 of 29.40±0.16mag (based on a distance modulus of 18.5±0.1mag for the Large Magellanic Cloud). This distance is consistent with the Hubble Space Telescope Key Project Cepheid distances of 29.34±0.17mag for the outer field of M101 and 29.21±0.17mag for the inner field.

Abstract Copyright: 2000, Royal Astronomical Society

Journal keyword(s): supergiants - stars: variables: other - galaxies: distances and redshifts - galaxies: individual: M101

Nomenclature: Tables 4, 5: [JPJ2000] VNN (Nos V1-V42).

CDS comments: in ref list Feast 1980MNRAS.193..377F instead of 193.337

Simbad objects: 50

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