S Ori 70: still a strong cluster planet candidate
| dc.creator | Martín, Eduardo L. | |
| dc.date | 2004-10-27 | |
| dc.date.accessioned | 2026-07-07T02:15:32Z | |
| dc.date.available | 2026-07-07T02:15:32Z | |
| dc.description | In this paper I show that the coolest $σ$Orionis cluster planet S Ori 70 is still a strong candidate member despite recent claims by Burgasser et al. that it could be a brown dwarf interloper. The main point of my argument is that the colors of S Ori 70 are significantly different to those of field dwarfs. This object has in fact the reddest $H-K$ color of all known T dwarfs, a clear indication of low gravity according to all published models. In a $J-H$ versus $H-K$ diagram, S Ori 70 lies in the region where models of ultracool dwarfs predict that low gravity objects should be located. I conclude that S Ori 70 is still a strong candidate member of the $σ$Orionis open cluster. I briefly discuss additional observational tests that can be carried out with existing facilities to verify the $σ$Orionis membership of this cluster planet candidate. | |
| dc.description | 6 pages, to be published in the proceedings book of Moriond_YLU 2004, edited by A. Chalabaev, Y. Fukui and T. Montmerle | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0410678 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0410678 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/8444 | |
| dc.subject | Astrophysics | |
| dc.title | S Ori 70: still a strong cluster planet candidate | |
| dc.type | text |