On the Cepheid variables of the nearby irregular galaxy NGC 3109

Details On the Cepheid variables of the nearby irregular galaxy NGC 3109 On the Cepheid variables of the nearby irregular galaxy NGC 3109

Apr 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992aj....103.1151c&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 103, April 1992, p. 1151-1158, 1419, 1420.

Astronomy and Astrophysics

Astronomy

35

Astronomical Photometry, Cepheid Variables, Irregular Galaxies, Calibrating, Color-Color Diagram, Magellanic Clouds, Stellar Luminosity

Scientific paper

A photometric CCD sequence in B is employed to measure 21 Cepheids in NGC 3109, and the data are utilized to evaluate the galaxy's distance modulus and examine Cepheid stellar parameters. The distance modulus for NGC 3109 is developed via two methods and shows that the object is delta(m - M)0 = 7.00 +/- 0.16 more distant than the LMC. The distance determination of 1.26 +/- 0.1 Mpc is 25 percent shorter than existing data, and the Cepheids in the LMC and NGC 3109 are found to have very similar properties.

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