AAS 196th Meeting, June 2000
Session 37. X-Ray Results from Chandra and XMM
Topical Contributed Display, Wednesday, June 7, 2000, 10:00am-7:00pm, Empire Hall South

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[37.03] Chandra Survey for AGNs in Nearby Galaxies

R.M. Sambruna (Penn State), L. C. Ho (Carnegie Obs), W.N. Brandt, E.D. Feigelson, G. P. Garmire, L. Townsley (Penn State), W.L.W. Sargent (CalTech), A.V. Filippenko (Berkeley), R. Griffiths, A. Ptak (Carnegie-Mellon)

Optical emission lines and stellar velocity dispersions indicate that many or most ordinary galaxies harbor central massive black holes. Several types of nuclear properties are present: low-luminosity Seyferts, LINERs, HII nuclei, and pure absorption-line nuclei. We are conducting a volume-limited snapshot survey of nearby galaxies to investigate whether X-ray nuclear emission is present in some or all of these galaxy types. Results from 2ks observations of about 20 of these galaxies using the Chandra ACIS-S instrument will be reported. We find a wide range of nuclear X-ray properties with 1039 < Lx < 1041 erg/s (0.5-8 keV). Some galaxies have strong AGN-like emission, others have nuclear sources comparable to the brighter stellar sources in the host galaxy, while yet others are completely undetected.

This work is supported by NASA contract NAS8-38252.

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