Purple dwarfs: New L subdwarfs from UKIDSS and SDSS
oleh: Marocco F., Day-Jones A.C., Jones H.R.A., Burningham B., Pinfield D.J., Zhang Z.H., Gomes J., Galvez-Ortiz M.C.
| Format: | Article |
|---|---|
| Diterbitkan: | EDP Sciences 2013-04-01 |
Deskripsi
The first L subdwarf was a discovered only ten years ago. Less than ten L subdwarfs been published in the literature to date. Metal-poor ultracool atmospheres has not been well understood. Halo mass function cross substellar limit has not been measured. We used UKIDSS and SDSS to search for L subdwarfs. We have confirmed some new L subdwarfs and are following up more candidates with ground based large telescopes. We discussed spectral features of L subdwarfs and halo brown dwarfs.