New photometric distances for dwarf galaxies in the Local Volume

Details New photometric distances for dwarf galaxies in the Local Volume New photometric distances for dwarf galaxies in the Local Volume

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...286..718k&link_type=abstract

Astronomy and Astrophysics 286, 718-724 (1994)

Astronomy and Astrophysics

Astrophysics

61

Galaxies: Distances And Redshifts, Galaxies: Irregular, Galaxies: Stellar Content

Scientific paper

We present a survey of photometric data on the brightest stars in 43 nearby galaxies with V_0_<500km/s. About 60% of the data are based on our own observations. Using for calibration distance moduli from Cepheids, and also newly defined membership of galaxies in multiple systems, we obtain the following relations between the luminosity of the 3 brightest red or blue stars and the luminosity of the parent galaxy: =0.19M^T^_B_-4.52 with dispersion σ(M)=0.30mag, and =0.35M^T^_B_-2.50 with σ(M)=0.30mag. The last relation extends over the whole range of galaxy luminosities from -21 to -9 mag. We advocate the necessity of a wide international programme to measure distances for the local galaxies using their brightest stars.

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