Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-22
Astrophys.J.600:L147-L150,2004
Astronomy and Astrophysics
Astrophysics
Accepted for Publication in ApJ Letters, 2 figures, 1 table + bibliography file
Scientific paper
10.1086/378946
We have identified a sample of 10 highly reliable off-nuclear (> 2 kpc) X-ray sources at z=0.03-0.25 in late-type host galaxies within the two GOODS fields (i.e., the two Chandra Deep Fields). The combination of the superb spatial resolution and great depth of the HST ACS and Chandra ACIS coverage in the GOODS fields is critical to the identification of these sources. We extend the study of this enigmatic population up to higher redshifts and larger look-back times than has been possible before, finding that the fraction of optically luminous galaxies exhibiting luminous off-nuclear sources at z~0.1 is larger than at the current time (~36% versus ~8%). The X-ray luminosities of the GOODS off-nuclear X-ray sources are comparable to or slightly greater than the integrated point-source X-ray luminosities of nearby galaxies, providing a possible constraint on the X-ray Luminosity Function at higher star-formation rates. X-ray variability demonstrates that several of these sources are likely single accreting black holes; for the majority, however, the number of X-ray counts is too low for X-ray variability studies.
Alexander Dave M.
Bauer Franz Erik
Brandt Wiliam N.
Chary Ranga Ram
Conselice Chris
No associations
LandOfFree
Lower Mass Black Holes in the GOODS? Off-nuclear X-ray Sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Lower Mass Black Holes in the GOODS? Off-nuclear X-ray Sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lower Mass Black Holes in the GOODS? Off-nuclear X-ray Sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-248827