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Journal article
L Dwarfs Found in Sloan Digital Sky Survey Commissioning Data II. Hobby-Eberly Telescope Observations
The Astronomical journal, v 123(1), pp 458-465
11 Oct 2001
Abstract
Astron.J. 123 (2002) 458 Low dispersion optical spectra have been obtained with the Hobby-Eberly
Telescope of 22 very red objects found in early imaging data from the Sloan
Digital Sky Survey. The objects are assigned spectral types on the 2MASS system
(Kirkpatrick et al. 1999) and are found to range from late M to late L. The
red- and near-infrared colors from SDSS and 2MASS correlate closely with each
other, and most of the colors are closely related to spectral type in this
range; the exception is the (i^* - z^*) color, which appears to be independent
of spectral type between about M7 and L4. The spectra suggest that this
independence is due to the disappearance of the TiO and VO absorption in the
i-band for later spectral types; to the presence of strong Na I and K I
absorption in the i-band; and to the gradual disappearance of the 8400 Angstrom
absorption of TiO and FeH in the z-band.
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Details
- Title
- L Dwarfs Found in Sloan Digital Sky Survey Commissioning Data II. Hobby-Eberly Telescope Observations
- Creators
- Donald P Schneider - Pennsylvania State UniversityGillian R Knapp - Princeton UniversitySuzanne L Hawley - University of WashingtonKevin R Covey - University of WashingtonXiaohui Fan - EarthTech InternationalLawrence W Ramsey - Pennsylvania State UniversityGordon T Richards - Pennsylvania State UniversityMichael A Strauss - Princeton UniversityJames E Gunn - Princeton UniversityGary J Hill - The University of Texas at AustinPhillip J MacQueen - The University of Texas at AustinMark T Adams - The University of Texas at AustinGrant M Hill - The University of Texas at AustinZeljko Ivezic - Princeton UniversityRobert H Lupton - Princeton UniversityJeffrey R Pier - United States Department of the NavyDavid H Saxe - EarthTech InternationalMatthew Shetrone - The University of Texas at AustinJoseph R Tufts - The University of Texas at AustinMarsha J Wolf - The University of Texas at AustinJ Brinkmann - New Mexico State UniversityIstvan Csabai - Eötvös Loránd UniversityG. S Hennessy - United States Naval ObservatoryDonald G York - University of Chicago
- Publication Details
- The Astronomical journal, v 123(1), pp 458-465
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000173767400036
- Scopus ID
- 2-s2.0-0009671506
- Other Identifier
- 991019201514604721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics