Computer Science
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..73280461o&link_type=abstract
VizieR On-line Data Catalog: J/MNRAS/328/461. Originally published in: 2001MNRAS.328..461O
Computer Science
X-Ray Sources, Galaxy Catalogs
Scientific paper
We present a catalogue of X-ray luminosities for 401 early-type galaxies, of which 136 are based on newly analysed ROSAT PSPC pointed observations (Cat. ). The remaining luminosities are taken from the literature and converted to a common energy band, spectral model and distance scale. Using this sample we fit the LX/LB relation for early-type galaxies and find a best-fit slope for the catalogue of ~2.2. We demonstrate the influence of group-dominant galaxies on the fit and present evidence that the relation is not well modelled by a single power-law fit. We also derive estimates of the contribution to galaxy X-ray luminosities from discrete-sources and conclude that they provide L(discrete-source-contribution)/LB~29.5erg/s/LB{sun}. We compare this result with luminosities from our catalogue. Lastly, we examine the influence of environment on galaxy X-ray luminosity and on the form of the LX/LB relation. We conclude that although environment undoubtedly affects the X-ray properties of individual galaxies, particularly those in the centres of groups and clusters, it does not change the nature of whole populations.
(1 data file).
Forbes Duncan A.
O'Sullivan Ewan
Ponman Trevor J.
No associations
LandOfFree
X-ray luminosities of early-type galaxies (O'Sullivan+, 2001) 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 X-ray luminosities of early-type galaxies (O'Sullivan+, 2001), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray luminosities of early-type galaxies (O'Sullivan+, 2001) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1690705