Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.1401i&link_type=abstract
American Astronomical Society Meeting 208, #14.01; Bulletin of the American Astronomical Society, Vol. 38, p.93
Astronomy and Astrophysics
Astronomy
Scientific paper
The brightest UV region of the Antennae galaxies (NGC4038/4039), Knots R/S/T, has been observed with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite. The observation used a 30x30 arcsec aperture, encompassing several stellar groups. The high-resolution FUV spectrum detects broad ( 150 km/s FWHM) O VI 1032, 1038 absorption blueward of the systemic velocity (1642 km/s) in the galactic outflow. This outflowing gas has a temperature of a few times 105 K and may dominate the radiative cooling of the supernova-heated interstellar medium. Strong C II 1036, H I 1026, S III 1012, 1015, S IV 1062, 1072 and Si IV 1122, 1128 have symmetric absorption features centered at the systemic velocity. These features probably originate from the OB stellar population in the galaxies. This work has been supported in part by a FUSE Guest Investigator grant from NASA (NAG5-13014) to the Catholic University of America.
Iping Rosina
Neff Susan
Sonneborn George
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