The location of an active nucleus and a shadow of a tidal tail in the ULIRG Mrk 273
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 p...
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| Veröffentlicht in: | Astronomy and astrophysics (Berlin) 2011-04, Vol.528, p.A137 |
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| container_title | Astronomy and astrophysics (Berlin) |
| container_volume | 528 |
| creator | 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. Veilleux, S. |
| description | 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 6–7 keV 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 ~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 ≥ 6 × 1021 cm -2, consistent with the tidal tail having an edge-on orientation. |
| doi_str_mv | 10.1051/0004-6361/201015872 |
| format | Article |
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There is evidence of a slight image extension in the 6–7 keV 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 ~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. 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H.</au><au>U, V.</au><au>Veilleux, S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The location of an active nucleus and a shadow of a tidal tail in the ULIRG Mrk 273</atitle><jtitle>Astronomy and astrophysics (Berlin)</jtitle><date>2011-04-01</date><risdate>2011</risdate><volume>528</volume><spage>A137</spage><pages>A137-</pages><issn>0004-6361</issn><eissn>1432-0746</eissn><coden>AAEJAF</coden><abstract>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 6–7 keV band, where an Fe K line is present, towards the northern nucleus. 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| source | Bacon EDP Sciences France Licence nationale-ISTEX-PS-Journals-PFISTEX; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; EDP Sciences |
| subjects | Astronomy Earth, ocean, space Exact sciences and technology galaxies: active galaxies: individual: Mrk 273 infrared: galaxies X-rays: galaxies |
| title | The location of an active nucleus and a shadow of a tidal tail in the ULIRG Mrk 273 |
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