Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...20713401y&link_type=abstract
American Astronomical Society Meeting 207, #134.01; Bulletin of the American Astronomical Society, Vol. 37, p.1385
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of our new observations of Stefan's Quintet (HCG 92) in 21cm neutral hydrogen emission obtained using the VLA at 6'' resolution. The new data has sufficient resolution to allow a detailed comparison between cold neutral gas and the sites of new and recent star formation activity traced by Hα , UV (GALEX), and IR (Spitzer) images. By analyzing together with the analysis of the gas kinematics traced in HI and Hα , we reconstruct the evolutionary history of the structures associated with these tracers, and they are interpreted in the context of the evolution of the group as a whole. We also present the results of a new analysis on the spatial distribution of HI at scales between 6'' (2 kpc) and 9' (220 kpc) by comparing our VLA data and the new deep single dish spectrum obtained using the NRAO Green Bank Telescope (GBT).
Borthakur Sanchayeeta
Verdes-Montenegro Lourdes
Xu Cong (Kevin)
Yun Min. S.
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