Other
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.3405d&link_type=abstract
American Astronomical Society Meeting 210, #34.05; Bulletin of the American Astronomical Society, Vol. 39, p.147
Other
Scientific paper
One of the most interesting effects of galaxy interaction concerns the neutral gas, HI, which is often stripped from the galaxies halos. We have started a program searching for evidence of star-formation within these HI clouds using multiwavelength data of groups of galaxies. Here we present the results of GALEX FUV, NUV, CTIO 4m R-band, and VLA HI data (Verdes-Montenegro et al. 2006) of the Hickson compact group HCG100 which is formed by four late-type galaxies at v=5336 km/s. HI is seen not only around the four members halo but also in a tail elongated more than 100 kpc towards the southern region where no obvious optical source is located. Although relatively empty at first glance, a total of 18 objects are detected in FUV, NUV, and R within the HI tail neighborhood. They are blue in colors, small in sizes and young in ages. We used FUV-NUV and FUV-R colors and the predictions from spectral synthesis models (Thilker et al. 07) to estimate their ages. Our multiwavelength data reveals that the intragroup medium of HCG100 is an active place where stars are formed within HII regions inside HI clouds. One of the most interesting objects is centered in the densest HI cloud in the intragroup medium where we are witnessing a small galaxy in formation with stellar population reaching only 3 Myr. Other young objects are found within in the HI neighborhood suggesting that these objects were formed in situ and were not ejected from the large galaxies to the intragroup medium.
de Mello Duilia F.
Mendes de Oliveira Claudia
Torres Flores S.
No associations
LandOfFree
The Not-So-Empty Intragroup Medium of a Compact Group of Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The Not-So-Empty Intragroup Medium of a Compact Group of Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Not-So-Empty Intragroup Medium of a Compact Group of Galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1030207