Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...396...80f&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 396, no. 1, Sept. 1, 1992, p. 80-96. Research supported by JPL and NASA.
Astronomy and Astrophysics
Astronomy
90
Astronomical Photometry, Cepheus Constellation, Charge Coupled Devices, Local Group (Astronomy), Red Shift, Astrometry, Hubble Constant, Interstellar Extinction, Spiral Galaxies
Scientific paper
A true distance modulus of (m - M)0 = 26.66 +/- 0.10 mag (corresponding to 2.1 +/- 0.1 Mpc) has been determined for the Sculptor Group spiral galaxy NGC 300. New CCD data have been obtained for a sample of known Cepheids in this galaxy from which apparent distance moduli at B, V, R, and I wavelengths are determined. Combining the data available at different wavelenghts, and assuming a true distance modulus to the LMC of 18.5 mag, a true distance modulus is obtained for NGC 300, corrected for the effects of interstellar reddening. The availability of a new distance to NGC 300 brings to five the total number of galaxies with new CCD photometry of Cepheids, useful for calibration of the Hubble constant.
Freedman Wendy L.
Hawley Suzanne L.
Horowitz Irwin Kenneth
Madore Barry F.
Mould Jeremy
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