Volume 415, Number 1, February III 2004
|Page(s)||265 - 272|
|Section||Stellar structure and evolution|
|Published online||03 February 2004|
A new strongly X-ray flaring M 9 dwarf in the solar neighborhood*
Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany
2 Institut für Astrophysik der Universität Innsbruck, Technikerstr. 25, 6020 Innsbruck, Austria
3 MPI für extraterrestrische Physik, Gissenbachstrasse 1, 85740 Garching, Germany
4 Astrophysikalisches Institut, Universität Jena, Schillergässchen 2-3, 07745 Jena, Germany
Corresponding author: V. Hambaryan, firstname.lastname@example.org
Accepted: 7 October 2003
We report on the discovery of a very low mass (VLM) star in the solar neighborhood, originally identified as an optical counterpart of a flaring X-ray source detected in the ROSAT All-Sky survey. Optical spectroscopy and infrared photometry consistently reveal a spectral type of and a distance of ≈ pc. The optical counterpart of 1RXS J115928.5-524717 shows a large proper motion of /year. 1RXS J115928.5-524717 is the fourth object among the VLM stars displaying a huge X-ray flare, reaching the unprecedent value of .
Key words: methods: data analysis / X-rays: stars / stars: low-mass, brown dwarfs / stars: distances / stars: flare / stars: individual: 1RXS J115928.5-524717
© ESO, 2004
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