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The brown dwarf population in the star forming region NGC2264
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- The brown dwarf population in the canonical star forming region NGC2264 is so far poorly explored. We present a deep, multi-wavelength, multi-epoch survey of the star forming cluster NGC2264, aimed to identify young brown dwarf candidates in this region. Using criteria including optical/near-infrared colours, variability, Spitzer mid-infrared colour excess, extinction, and Gaia parallax and proper motion (in order of relevance), we select 902 faint red sources with indicators of youth. Within this sample we identify 429 brown dwarf candidates based on their infrared colours. The brown dwarf candidates are estimated to span a mass range from 0.01 to 0.08$M_{\odot}$. We find rotation periods for 44 sources, 15 of which are brown dwarf candidates, ranging from 3.6 hours to 6.5 days. A subset of 38 brown dwarf candidates show high level irregular variability indicative of ongoing disc accretion, similar to the behaviour of young stars.<br />Comment: 10 pages, 14 figures
- Subjects :
- Proper motion
Population
Extinction (astronomy)
Brown dwarf
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Star (graph theory)
Surveys
01 natural sciences
low-mass [Stars]
0103 physical sciences
QB Astronomy
Astrophysics::Solar and Stellar Astrophysics
education
010303 astronomy & astrophysics
QC
Astrophysics::Galaxy Astrophysics
Solar and Stellar Astrophysics (astro-ph.SR)
QB
Physics
education.field_of_study
Brown dwarfs
010308 nuclear & particles physics
Astronomy and Astrophysics
DAS
Catalogues
Accretion (astrophysics)
Stars
QC Physics
Astrophysics - Solar and Stellar Astrophysics
Space and Planetary Science
Astrophysics::Earth and Planetary Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....60487815e2130e4a97996d12ed0b5679
- Full Text :
- https://doi.org/10.48550/arxiv.2009.14749