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Date and Time of the Query: 2019-06-18 T21:39:16 PDT
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For refcode 2004ApJ...615..689G:
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Copyright by American Astronomical Society. Reproduced by permission
2004ApJ...615..689G The Nature of Nearby Counterparts to Intermediate-Redshift Luminous Compact Blue Galaxies. I. Optical/H I Properties and Dynamical Masses C. A. Garland, D. J. Pisano, J. P. Williams, R. Guzman, and F. J. Castander Abstract. We present single-dish H I spectra obtained with the Green Bank Telescope, along with optical photometric properties from the Sloan Digital Sky Survey, of 20 nearby (D<~70 Mpc) luminous compact blue galaxies (LCBGs). These ~L*, blue, high surface brightness, starbursting galaxies were selected using the same criteria as were used to define LCBGs at higher redshifts. We find that these galaxies are gas-rich, with M_HI_ ranging from 5x10^8^ to 8x10^9^ M_sun_ and M_HI_L^-1^_B_ ranging from 0.2 to 2 M_sun_ L^-1^_sun_, consistent with a variety of morphological types of galaxies. We find that the dynamical masses (measured within R_25_) span a wide range, from 1 to 1x10^11^ M_sun_. However, at least half have dynamical mass-to-light ratios smaller than those of nearby galaxies of all Hubble types, as found for LCBGs at intermediate redshifts. By comparing line widths and effective radii with local galaxy populations, we find that LCBGs are consistent with the dynamical mass properties of Magellanic (low luminosity) spiral galaxies and the more massive irregular and dwarf elliptical galaxies, such as NGC 205. Keywords: Galaxies: Evolution, Galaxies: Fundamental Parameters, Galaxies: ISM, Galaxies: Kinematics and Dynamics, Galaxies: Starburst
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