HEAD 2003 Meeting
Session 21. Active Galactic Nuclei III
Poster, Sunday-Wednesday, March 23, 2003, Duration of Meeting

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[21.12] Absorbed AGN Near and Far

H. Ghosh, B. J. Wilkes (CfA), R. M. Cutri (IPAC), D. C. Hines (Steward Obs.), B. Nelson (IPAC), G. D. Schmidt, P. S. Smith (Steward Obs.)

We present an x-ray study of heavily absorbed, IR-selected AGN derived from the Two Micron All Sky Survey (2MASS), and a comparison with local AGN. 2MASS AGN are low-redshift (median z ~0.25), luminous, red, and predominantly broad-line objects. To our sample of 26 objects observed during Cycle 2 of Chandra, we now add observations from the current Cycle, increasing the sample size by about a third. The initial sample of 26 showed no correlation between optical classification and x-ray hardness ratios, casting doubt on a simple line-of-sight based unification scheme. We re-examine the results using the bigger sample. The 2MASS AGN raise the question of whether their obscuration is similar to or different from that of well-known nearby AGN like NGC 1068 (z = 0.00379). We subject x-ray observations of such local AGN that are available in the Chandra Archive to analysis similar to that done on the 2MASS AGN, and compare the results.

We gratefully acknowledge financial support of NASA grant GO1-2112A.

The author(s) of this abstract have provided an email address for comments about the abstract: hghosh@cfa.harvard.edu

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Bulletin of the American Astronomical Society, 35#2
© 2003. The American Astronomical Soceity.