A NIR Observation of GRO J1655-40

Details A NIR Observation of GRO J1655-40 A NIR Observation of GRO J1655-40

Feb 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005atel..417....1t&link_type=abstract

The Astronomer's Telegram, #417

Astronomy and Astrophysics

Astronomy

9

Infra-Red, Request For Observations, Binaries, Black Holes, Transients

Scientific paper

Following ATEL #414, on February 20.39 UT we acquired a J-band image of the X-ray transient GRO J1655-40 using the PANIC camera on the 6.5-m Magellan-Baade telescope at Las Campanas Observatory. Preliminary relative photometry with respect to ten 2MASS nearby stars yields J=13.2 +/- 0.1, indicating that GRO J1655-40 is brighter by at least ~0.5 mag in J relative to its magnitude in quiescence (J=13.7-14; Greene, Bailyn & Orosz 2001,ApJ,554,1290).

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