Astron. J., 145, 150 (2013/June-0)
Exploring the interstellar media of optically compact dwarf galaxies.
MOST H.P., CANNON J.M., SALZER J.J., ROSENBERG J.L., ENGSTROM E. and FLISS P.
Abstract (from CDS):
We present new Very Large Array H I spectral line, archival Sloan Digital Sky Survey, and archival Spitzer Space Telescope imaging of eight star-forming blue compact dwarf galaxies that were selected to be optically compact (optical radii <1 kpc). These systems have faint blue absolute magnitudes (MB ≳ -17), ongoing star formation (based on emission-line selection by the Hα or [O III] lines), and are nearby (mean velocity = 3315 km/s ≃ 45 Mpc). One galaxy in the sample, ADBS 113845+2008, is found to have an H I halo that extends 58 r-band scale lengths from its stellar body. In contrast, the rest of the sample galaxies have H I radii to optical-scale-length ratios ranging from 9.3 to 26. The size of the H I disk in the "giant disk" dwarf galaxy ADBS 113845+2008 appears to be unusual as compared with similarly compact stellar populations.
galaxies: dwarf - galaxies: evolution - galaxies: individual (IC 2271, ADBS J113845+2008, KISSR 245, KISSR 278, KISSR 396, KISSR 561, KISSR 572, KISSR 1021) - galaxies: irregular
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