Variability in the Lambda Orionis cluster substellar domain
| Autor: | D. Barrado y Navascues, Nuria Huélamo, M. Morales Calderon |
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| Rok vydání: | 2005 |
| Předmět: |
Physics
Deuterium burning Astrophysics (astro-ph) Brown dwarf FOS: Physical sciences Astronomy and Astrophysics Astrophysics Lambda Stars Space and Planetary Science Domain (ring theory) Cluster (physics) Astrophysics::Solar and Stellar Astrophysics Astrophysics::Earth and Planetary Astrophysics Low Mass Planetary mass |
| Zdroj: | Astronomische Nachrichten. 326:981-984 |
| ISSN: | 1521-3994 0004-6337 |
| DOI: | 10.1002/asna.200510443 |
| Popis: | We present the first results on variability of very low mass stars and brown dwarfs belonging to the 5 Myr Lambda Orionis cluster (Collinder 69). We have monitored almost continuously in the J filter a small area of the cluster which includes 12 possible members of the cluster during one night. Some members have turned to be short-term variable. One of them, LOri167, has a mass close to the planetary mass limit and its variability might be due to instabilities produced by the deuterium burning, although other mechanism cannot be ruled out. Comment: Accepted for Astronomische Nachrichten. Workshop "Ultra-low-mass star formation and evolution", La Palma June 2005 |
| Databáze: | OpenAIRE |
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