Discovering M-Dwarf Companions with STEPS

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The Stellar Planet Survey (STEPS) is an ongoing astrometric search for giant planets and brown dwarfs around a sample of ~30 M-dwarfs. We have discovered several low-mass companions by measuring the motion of our target stars relative to their reference frames. We describe the STEPS method for stellar centroiding that enables our ~1 milliarcsecond relative astrometry. We describe one of the astrometrically discovered companions, GJ 1210B, which was later confirmed with an imaging observation. GJ 1210 A and B have spectral types M4-5, based on their luminosities, inferred masses, and colors.
4 pages, 3 figures

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Astrophysics

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http://salesiana.dossiersoluciones.com/handle/123456789/8852

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/astro-ph/0501025
 http://arxiv.org/abs/astro-ph/0501025

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arXiv