H alpha emission in SAX J2103.5+4545

Details H alpha emission in SAX J2103.5+4545 H alpha emission in SAX J2103.5+4545

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007atel.1085....1m&link_type=abstract

The Astronomer's Telegram, #1085

Astronomy and Astrophysics

Astronomy

1

Optical, Binaries, Pulsars, Transients

Scientific paper

The high-mass X-ray binary SAX J2103.5+4545 was observed from Skinakas observatory (Crete) on 2007 May 14 (UT 22:24) and 20 (UT 22:12). The H alpha line showed a double-peak profile and weak emission with equivalent width 2.5+-0.2 and 1.9+-0.2 angstrom, respectively. This is the first report of H alpha emission since 2003 August. The optical activity coincides with renewed X-ray activity.

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