Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/1671
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMaiti, M-
dc.contributor.authorSengupta, S-
dc.contributor.authorParihar, P. S-
dc.contributor.authorAnupama, G. C-
dc.date.accessioned2007-06-20T09:33:01Z-
dc.date.available2007-06-20T09:33:01Z-
dc.date.issued2005-02-
dc.identifier.citationThe Astrophysical Journal Letters, Vol. 619, pp. L183 - L186en
dc.identifier.urihttp://hdl.handle.net/2248/1671-
dc.description.abstractWe report, for the first time, photometric variability of L dwarfs in the R band. Out of three L1 dwarfs (2MASS 1300+19, 2MASS 1439+19, and 2MASS 1658+70) observed, we have detected R-band variability in 2MASS 1300+19 and 2MASS 1439+19. The objects exhibit variability of amplitude ranging from 0.01 to 0.02 mag. Object 2MASS 1658+70 turns out to be nonvariable in both the R and I bands. However, more observations are needed to infer its variability. No periodic behavior in the variability is found from the two L1 dwarfs that are variable. All three L1 dwarfs have either negligible or no Hα activity. In the absence of any direct evidence for the presence of a sufficiently strong magnetic field, the detection of polarization at the optical favors the presence of dust in the atmosphere of L dwarfs. We suggest that the observed R-band photometric variability is most likely due to atmospheric dust activity.en
dc.format.extent163999 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherUniversity of Chicago Pressen
dc.relation.urihttp://arxiv.org/abs/astro-ph/0412409en
dc.relation.urihttp://dx.doi.org/10.1086/428088en
dc.subjectStars: atmospheresen
dc.subjectBrown dwarfsen
dc.titleObservation of R-Band Variability of L Dwarfsen
dc.typeArticleen
Appears in Collections:IIAP Publications
Publications based on data from IAO, Hanle

Files in This Item:
File Description SizeFormat 
Observation of R-Band Variability of L Dwarfs160.16 kBAdobe PDFThumbnail
View/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.