ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382

Details ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382 ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382

Sep 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...468..175k&link_type=abstract

Astrophysical Journal v.468, p.175

Astronomy and Astrophysics

Astronomy

37

Galaxies: Elliptical And Lenticular, Cd, Galaxies: Individual Ngc Number: Ngc 4382, X-Rays: Galaxies

Scientific paper

NGC 4382 is one of the E and SO galaxies detected with the lowest X-ray-to-optical luminosity ratio. These galaxies have a peculiar X-ray (0.1-3 keV) spectrum, with a significant excess of counts in the lowest spectral channels (<1 keV) relative to the spectral count distributions of X-ray brighter E and SO galaxies. Analyzing the ROSAT Position Sensitive Proportional Counter observations of NGC 4382, it was unclear whether this soft excess were due to a real very soft component in a multicomponent spectrum or reflected an extremely low metal abundance in a isothermal hot gas. Our ASCA observations show that the low-abundance single-temperature model does not fit well the X-ray spectrum, in agreement with our previous suggestions. A better explanation is a composite spectrum with a very soft component (˜0.3 keV) in addition to a hard, likely stellar, component (˜5 keV). In this model, the abundance cannot be constrained. However, other more complex spectral models cannot be excluded.

Affiliated with

Also associated with

No associations

Rating

ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382 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 ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA Spectra of the X-Ray Faint S0 Galaxy NGC 4382 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1458635