Distances to Magellanic Clouds from observations of Cepheids at 1.05 microns

Details Distances to Magellanic Clouds from observations of Cepheids at 1.05 microns Distances to Magellanic Clouds from observations of Cepheids at 1.05 microns

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...288..182v&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 288, Jan. 1, 1985, p. 182-186.

Astronomy and Astrophysics

Astrophysics

36

Astrometry, Cepheid Variables, Distance, Magellanic Clouds, Astronomical Photometry, Stellar Magnitude

Scientific paper

Observations in the IV (1.05 microns) and V (5500 A) wave bands are presented for 13 Cepheids in the SMC, 14 in the LMC, and nine in groups and clusters in our Galaxy having periods between 2 and 87 days. The IV magnitudes of Cepheids are used in conjunction with periods to construct a period-luminosity (P-L) relation in the SMC, the LMC, and the Galaxy. It is found that the slope of the relation is similar in the three galaxies (-3.14). The dispersion of the relation is small and nearly equal to + or - 0.15 mag. Through the absolutely calibrated relation in our Galaxy, distance moduli of 19.11 + or - 0.07 and 18.82 + or - 0.07 for the SMC and the LMC, respectively, based on a distance modulus of 3.29 for the Hyades are obtained.

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