SIMBAD references

2004ApJ...615..689G - Astrophys. J., 615, 689-701 (2004/November-2)

The nature of nearby counterparts to intermediate-redshift luminous compact blue galaxies. I. Optical/H I properties and dynamical masses.

GARLAND C.A., PISANO D.J., WILLIAMS J.P., GUZMAN R. and CASTANDER F.J.

Abstract (from CDS):

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 MHIranging from 5x108 to 8x109 Mand MHIL–1Branging from 0.2 to 2 ML–1, consistent with a variety of morphological types of galaxies. We find that the dynamical masses (measured within R25) span a wide range, from 1 to 1x1011 M. 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.

Abstract Copyright:

Journal keyword(s): Galaxies: Evolution - Galaxies: Fundamental Parameters - Galaxies: ISM - Galaxies: Kinematics and Dynamics - Galaxies: Starburst

Simbad objects: 25

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