The Galactic Generation-X: The First Study of X-ray Properties of E+A Galaxies

Details The Galactic Generation-X: The First Study of X-ray Properties of E+A Galaxies The Galactic Generation-X: The First Study of X-ray Properties of E+A Galaxies

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..146j&link_type=abstract

XMM-Newton Proposal ID #04040007

Computer Science

Galaxies, Galactic Surveys, Sdssj090332.77+, Sdssj210650.51-, Xmm-Newton Proposal 04040007

Scientific paper

We propose XMM observations of 11 E+A galaxies from SDSS to detect X-ray emission from intermediate-mass X-ray binaries (IMXBs) and hot gas. E+As contain a young stellar population, but with no O or B stars. IMXBs are NSs or BHs accreting from a 2-5 M_Sun donor. During their active phase, a super-Eddington mass-transfer rate is expected. We expect 10-1000 bright IMXBs/galaxy. We will measure the X-ray flux to detect the IMXB contribution, and constrain IMXB formation. Detection of hot gas will study the regeneration of X-ray halos in typical early-type galaxies. Post-merger remnants are deficient in gas compared to early-type galaxies. E+As are an intermediate stage between merger remnants and early-type galaxies. X-ray studies of E+As will allow us to measure the gas accumulation rate.

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