Search results for "Stars formation"

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The brown dwarf population in the Chamaeleon I cloud

2003

We present the results of a multiband survey for brown dwarfs in the Chamaeleon I dark cloud with the Wide Field Imager (WFI) camera at the ESO/MPG 2.2-m telescope on La Silla (Chile). The survey has revealed a substantial population of brown dwarfs in this southern star forming region. Candidates were selected from R, I and H-alpha imaging observations. We also observed in two medium-band filters, M855 and M915, for the purpose of spectral type determination. The former filter covers a wavelength range containing spectral features characteristic of M-dwarfs, while the latter lies in a relatively featureless wavelength region for these late-type objects. A correlation was found between spec…

InfraredPopulationBrown dwarfFOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICAAstrophysicsStellar classificationPhotometry (optics)Stars formationAstrophysics::Solar and Stellar AstrophysicseducationAstrophysics::Galaxy AstrophysicsPhysicseducation.field_of_studyBrown dwarfsStar formationAstrophysics (astro-ph)Luminosity functionAstronomy and AstrophysicsLow-massCircumstellar matterStars:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia [UNESCO]Pre-main sequenceLow-mass ; Brown dwarfs ; Stars ; Pre-main sequence ; Stars formation ; Luminosity function ; Mass function ; Circumstellar matterStarsSpace and Planetary ScienceMass functionChamaeleonAstrophysics::Earth and Planetary AstrophysicsUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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