Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004chjaa...4..221z&link_type=abstract
Chinese Journal of Astronomy & Astrophysics, Vol. 4, Issue 3, p. 221-230
Astronomy and Astrophysics
Astrophysics
6
Binaries: Close, Galaxies: Elliptical And Lenticular, Galaxies: Individual: Ngc 1407, X-Rays: Binaries, X-Rays: Galaxies
Scientific paper
With the Chandra pointing observation of about 50ks, we have detected 41 point sources in the X-ray relatively faint elliptical galaxy NGC1407, most of which appear to be low mass X-ray binaries. In luminosity flux units, these resolved point sources contribute about 17.8% of the total emission of the galaxy in 0.3-10 keV. Of the remaining diffuse emission, about 53.4% (or 43.9% of total) may arise from unresolved point sources. We find six ultraluminous X-ray sources with luminosities above 1039 erg s-1. This number is less than has been found in NGC 720, but more than in NGC4697 and NGC1553, so suggesting a possible correlation between the number of ULXs and the total X-ray luminosity of early-type galaxies. A central point-like source is detected whose luminosity (2.36±0.14×1039 erg s-1) is the highest among all resolved sources. However, because of its relatively low hardness ratio, we speculate that it is not likely to be a low luminosity AGN.
Xu Hai-Guang
Zhang Zhong-Li
No associations
LandOfFree
Chandra Observation of Point Sources in the X-Ray Elliptical Galaxy NGC 1407 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 Chandra Observation of Point Sources in the X-Ray Elliptical Galaxy NGC 1407, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chandra Observation of Point Sources in the X-Ray Elliptical Galaxy NGC 1407 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-891309