SIMBAD references

2011A&A...528A.137I - Astronomy and Astrophysics, volume 528A, 137-137 (2011/4-1)

The location of an active nucleus and a shadow of a tidal tail in the ULIRG Mrk 273.

IWASAWA K., MAZZARELLA J.M., SURACE J.A., SANDERS D.B., ARMUS L., EVANS A.S., HOWELL J.H., KOMOSSA S., PETRIC A., TENG S.H., U V. and VEILLEUX S.

Abstract (from CDS):

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 that dominates the far infrared luminosity. There is evidence of a slight image extension in the 6-7keV band, where an 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 ∼50arcsec (40kpc) 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≥ 6x1021cm–2, consistent with the tidal tail having an edge-on orientation.

Abstract Copyright:

Journal keyword(s): galaxies: active - X-rays: galaxies - galaxies: individual: Mrk 273 - infrared: galaxies

Nomenclature: Paragr. 3.1: [IMS2011] CSCN (Nos CSC1-CSC3) = GOALS JHHMMSS.ss+DDMMSS.s N=3.

Simbad objects: 12

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2023.02.02-21:44:56

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