Probing the High Luminosity End of Elliptical Galaxy X-ray Scaling Relations

Details Probing the High Luminosity End of Elliptical Galaxy X-ray Scaling Relations Probing the High Luminosity End of Elliptical Galaxy X-ray Scaling Relations

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009xmm..prop..148i&link_type=abstract

XMM-Newton Proposal ID #06540804

Computer Science

Galaxies, Galactic Surveys, Sdssj104056.4-0, Sdssj010803.2+1

Scientific paper

Scaling relations between L_X, L_opt, T_X, and sigma for elliptical galaxies are a useful tool to probe the hydrodynamical state of hot gas within early-type galaxies. The comparison of these relations to those of groups and clusters also provides insight into the self-similarity behavior of hot gas over a wide range of potential well depths. We propose XMM-Newton observations of eight of the most massive and luminous galaxies discovered in the Sloan Digital Sky Survey to extend these relations for elliptical galaxies to optical luminosities a factor of three more luminous than in previous studies. Two of the galaxies are lenses in spectacular strong lensing systems, including a galaxy with an astounding stellar velocity dispersion of 530 km/s.

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