Brown Dwarfs in the Pleiades Cluster: a CCD-based R,I survey
| dc.creator | Osorio, M. R. Zapatero | |
| dc.creator | Rebolo, R. | |
| dc.creator | Martin, E. L. | |
| dc.date | 1996-04-15 | |
| dc.date.accessioned | 2026-07-07T02:21:08Z | |
| dc.date.available | 2026-07-07T02:21:08Z | |
| dc.description | We have obtained deep CCD R and I mosaic imaging of 578 arcmin$^{2}$ within 1$^{\circ}$.5 of the Pleiades' center -- reaching a completeness magnitude I=19.5 -- with the aim of finding free-floating brown dwarfs. Teide~1, the best $bona$ $fide$ brown dwarf discovered so far in the cluster (Rebolo, Zapatero Osorio \& Mart\'ın 1995), arose as a result of a combined photometric and astrometric study of $\sim$1/4 of our covered area. The extension of our two-colour survey provides eight new additional brown dwarf candidates whose photometry is rather similar to that of Teide~1. Several of them are even fainter. Follow up low-resolution spectroscopy (Mart\'ın, Rebolo \& Zapatero Osorio 1996) shows that one of them is indeed a Pleiades brown dwarf. Most of the remaining candidates are background late-M dwarfs which are contaminating our survey, possibly due to a small (previously unknown) cloud towards the cluster which affects some of our CCD fields. We did not expect any foreground M8--M9 field dwarf in our surveyed volume and surprisingly we have found one, suggesting that its number could be larger than inferred from recent luminosity function studies in the solar neighbourhood. | |
| dc.description | 7 pages, figures NOT included. Uuencoded and gzipped file. Full postscript (text and figures) available at http://www.iac.es/home.html; A\&A (accepted) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9604079 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9604079 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10441 | |
| dc.subject | Astrophysics | |
| dc.title | Brown Dwarfs in the Pleiades Cluster: a CCD-based R,I survey | |
| dc.type | text |