Variable Stars in the Holmberg II Dwarf Galaxy
Open Access
- 1 February 1998
- journal article
- research article
- Published by American Astronomical Society in The Astronomical Journal
- Vol. 115 (2) , 573-583
- https://doi.org/10.1086/300214
Abstract
The dwarf irregular galaxy Holmberg II (DDO 50) has been observed on 34 separate nights for the purpose of finding and photometering variable stars. Extensive analysis of the CCD frames obtained over 14 years has yielded a set of 28 candidate pulsating variable stars that are likely to be Cepheids. Further selection based on available colors defines a set of seven very likely Cepheids. Comparison of these data with the period-luminosity relation of Madore & Freedman for Magellanic Cloud Cepheids produces a distance modulus of m - M = 27.42, which corresponds to 3.05 Mpc.Keywords
This publication has 19 references indexed in Scilit:
- The Cepheid period-luminosity zero-point from Hipparcos trigonometrical parallaxesMonthly Notices of the Royal Astronomical Society, 1997
- Variable stars in the Leo A dwarf galaxy (DDO 69)The Astronomical Journal, 1994
- The Hubble Space Telescope Extragalactic Distance Scale Key Project. 1: The discovery of Cepheids and a new distance to M81The Astrophysical Journal, 1994
- The H II regions of Holmberg IIPublications of the Astronomical Society of the Pacific, 1994
- The extragalactic distance scale. VIII - A comparison of distance scalesThe Astrophysical Journal, 1993
- The Cepheid distance scalePublications of the Astronomical Society of the Pacific, 1991
- Photometry of resolved galaxies. IV - Holmberg I and Holmberg IIThe Astrophysical Journal, 1984
- An example of the performance of the space telescope planetary cameraPublications of the Astronomical Society of the Pacific, 1983
- Care, Feeding, And Use Of Charge-Coupled Device (CCD) Imagers At Palomar ObservatoryPublished by SPIE-Intl Soc Optical Eng ,1981
- An RR Lyrae Star Survey with Ihe Lick 20-INCH Astrograph II. The Calculation of RR Lyrae Periods by Electronic Computer.The Astrophysical Journal Supplement Series, 1965