Host Galaxies of 2MASS-selected QSOs to Redshift 0.3 | Zendy

J. B. Hutchings | Zendy; Natasha Maddox | Zendy; R. M. Cutri | Zendy; B. Nelson | Zendy

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Host Galaxies of 2MASS-selected QSOs to Redshift 0.3

Author(s) -

J. B. Hutchings,

Natasha Maddox,

R. M. Cutri,

B. Nelson

Publication year - 2003

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/375650

Subject(s) - astrophysics , physics , galaxy , active galactic nucleus , qsos , redshift , sky , population , redshift survey , astronomy , medicine , environmental health

We present and discuss optical imaging of 76 AGN which represent the2MASS-selected sample for z<0.3, from a full list of 243. They are found tohave dust-obscured nuclei, residing in host galaxies that show a high fraction(>70%) of tidal interactions. The derived luminosities of the AGN and hostgalaxies are similar to traditionally-selected AGN, and they may comprise some40% of the total AGN population at low redshift. We have measured a number ofhost galaxy properties, and discuss their distributions and interrelations. Wecompare the 2MASS AGN with optically selected samples and the IRAS-selectedgalaxy samples, and discuss the differences in terms of merger processes andinitial conditions.Comment: 22 pages including 1 table, 9 figures, to appear in A

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