The new eclipsing cool star binary RXJ 1442-0039

Details The new eclipsing cool star binary RXJ 1442-0039 The new eclipsing cool star binary RXJ 1442-0039

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..167s&link_type=abstract

XMM-Newton Proposal ID #05044801

Physics

Stars, White Dwarfs, Solar System, Rxj 1442-0039, Xmm-Newton Proposal 05044801

Scientific paper

Optical follow-up observation have shown the RASS source RXJ 1442-0039 to be an eclipsing binary consisting of two stars of spectral type G5V+K1V. Modeling of the optical light curve shows the eclipse to be total, implying that large fractions of the stellar surfaces are occulted during optical primary and secondary minimum. With its rather large X-ray flux RXJ 1442-0039 is therefore extremely well suited to study the geometric location of the X-ray emission in activestars. Detailed X-ray studies of RXJ 1442-0039 have never been carried out in the past, therefore we propose two XMM-Newton pointings centered on primary andoptical secondary eclipse, respectively, to search for X-ray eclipses in RXJ 1442-0039.

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