The Classification of T Dwarfs
| dc.creator | Burgasser, Adam J. | |
| dc.creator | Kirkpatrick, J. Davy | |
| dc.creator | Brown, Michael E. | |
| dc.date | 2001-01-15 | |
| dc.date.accessioned | 2026-07-07T01:57:22Z | |
| dc.date.available | 2026-07-07T01:57:22Z | |
| dc.description | We discuss methods for classifying T dwarfs based on spectral morphological features and indices. T dwarfs are brown dwarfs which exhibit methane absorption bands at 1.6 and 2.2 $μm$. Spectra at red optical (6300--10100 Å) and near-infrared (1--2.5 $μm$) wavelengths are presented, and differences between objects are noted and discussed. Spectral indices useful for classification schemes are presented. We conclude that near-infrared spectral classification is generally preferable for these cool objects, with data sufficient to resolve the 1.17 and 1.25 $μm$ K I doublets lines being most valuable. Spectral features sensitive to gravity are discussed, with the strength of the K-band peak used as an example. Such features may be used to derive a two-dimensional scheme based on temperature and mass, in analogy to the MK temperature and luminosity classes. | |
| dc.description | 15 pages, 6 figures, conference proceedings for IAU Ultracool Dwarf Stars session, ed. I. Steele & H. Jones | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0101243 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0101243 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/2363 | |
| dc.subject | Astrophysics | |
| dc.title | The Classification of T Dwarfs | |
| dc.type | text |