VLA HI and Spitzer Study of HCG 07 and HCG 19

Details VLA HI and Spitzer Study of HCG 07 and HCG 19 VLA HI and Spitzer Study of HCG 07 and HCG 19

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20717916h&link_type=abstract

American Astronomical Society Meeting 207, #179.16; Bulletin of the American Astronomical Society, Vol. 37, p.1456

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Hickson Compact Groups (HCGs) provide a unique environment to study the role of gas in galaxy evolution. We use new Spitzer IRAC (3.6, 4.5, 5.8, and 8.0 microns) and MIPS (24 micron) data in combination with archival VLA HI observations to examine star formation and HI gas content in HCG 07 and HCG 19. The HI observations show that gas is confined to the individual galaxies, which are HI deficient compared to isolated galaxies. The gas kinematics are fairly regular, indicating that these systems are at an early stage of the proposed evolutionary scenario for compact groups. We examine the relationship between the HI deficiency and the infrared spectral energy distributions of the individual galaxies to help understand how the cold gas content and star formation activity evolve in compact groups.

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