Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-01-19
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
Accepted for publication in A&A, 8 pages, 5 figures. This work is part of the GOALS (http://goals.ipac.caltech.edu)
Scientific paper
Analysis of data from the Chandra X-ray Observatory for the double nucleus ULIRG Mrk 273 reveals an absorbed hard X-ray source coincident with the southwest nucleus, implying that this unresolved near infrared source is where an active nucleus resides while the northern nuclear region contains a powerful starburst which dominates the far infrared luminosity. There is evidence of a slight image extension in the 6-7 keV band, where a Fe K line is present, towards the northern nucleus. A large-scale, diffuse emission nebula detected in soft X-rays contains a dark lane that spatially coincides with a high surface-brightness tidal tail extending ~50 arcsec (40 kpc) to the south. The soft X-ray source is likely located behind the tidal tail which absorbs X-ray photons along the line of sight. The estimated column density of cold gas in the tidal tail responsible for shadowing the soft X-rays is nH >= 6e+21 cm-2, consistent with the tidal tail having an edge-on orientation.
Vivian U.
Armus Lee
Evans Aaron S.
Howell Justin H.
Iwasawa Kashuzi
No associations
LandOfFree
The location of an active nucleus and the soft X-ray shadowing by a tidal tail in the ULIRG Mrk 273 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 location of an active nucleus and the soft X-ray shadowing by a tidal tail in the ULIRG Mrk 273, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The location of an active nucleus and the soft X-ray shadowing by a tidal tail in the ULIRG Mrk 273 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-156436