Spectral analysis of the intra-group medium in the NGC 2300 group.

Details Spectral analysis of the intra-group medium in the NGC 2300 group. Spectral analysis of the intra-group medium in the NGC 2300 group.

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996rftu.proc..575d&link_type=abstract

International Conference on X-ray Astronomy and Astrophysics: Röntgenstrahlung from the Universe, p. 575 - 576

Astronomy and Astrophysics

Astrophysics

Intracluster Gas: Galaxy Groups, Intracluster Gas: X-Ray Spectra, Galaxy Groups: Masses

Scientific paper

The authors report the results of spectral and spatial analysis of overlapping ROSAT PSPC and ASCA SIS observations of the NGC 2300 group. Spatial analysis of the co-added fields reveals that the diffuse X-ray gas can be traced to at least 25' (0.33 Mpc, H0 = 50 km s-1Mpc-1). The temperature of the gas, as determined from fitting a Raymond-Smith plasma model to the spectral data, is 0.88(-0.05,+0.04) keV. The additional observations allow three different annuli to be fit. Fitting these different regions constrains any temperature gradient to be less than ≡0.2 keV. The abundance determined from the X-ray spectrum is also low, <0.05 solar. The mass of gas within 0.33 Mpc is 1.39×1012Msun; and, if the gas is in hydrostatic equilibrium with the potential the total mass within this radius is 1.33×1013Msun. Comparing the mass of the galaxies plus the mass of hot gas to the total mass of the system yields an observed baryonic fraction of 12-18%. This value is higher than in the authors' original analysis, where the form of the gas density profile was fixed at an assumed value.

Affiliated with

Also associated with

No associations

Rating

Spectral analysis of the intra-group medium in the NGC 2300 group. 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 Spectral analysis of the intra-group medium in the NGC 2300 group., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral analysis of the intra-group medium in the NGC 2300 group. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-858202