VizieR Online Data Catalog: Spitzer observations of Y and T dwarfs (Martin+, 2018)
Abstract
This catalogue includes Spitzer photometry for 27 objects, including preliminary parallaxes for 19 Y dwarfs and 3 late-T dwarfs from the Spitzer parallax program (PI: Kirkpatrick, aiming to measure distances to all of the nearby late-T and Y dwarfs within 20pc that are not being covered by ground-based astrometric monitoring). The Spitzer observations are obtained with the with Spitzer/Infrared Array Camera (IRAC) channel 2, and they cover baselines of ~2-7years.
Besides, near-infrared images of WISE 0336-0143, WISE0550-1950, WISE0615+1526, WISE 0642+0423, WISE 1055-1652, WISE 1220+5407, and WISE 2203+4619 were obtained using the WIRC on the 200 inch Hale Telescope at Palomar Observatory on 2012 January 4 (WISE 0336-0143, WISE 1055-1652), 2014 March 7 (WISE 2203+4619) and 2016 February 26 (WISE 0550-1950, WISE 0615+1526, WISE 0642+0423, WISE 1220+5407). WIRC has a pixel scale of 0.2487"/pixel providing a total field of view of 8.7". For each object, fifteen 2-minute images were obtained in the J filter (30 minutes total exposure time). The catalogue also includes spectral types of four targets from the original Spitzer Parallax Program with unknown or uncertain spectral types: WISE 0336-0143, WISE 1051-2138, WISE 1055-1652, and WISE 1318-1758. These types were obtained using J-band spectroscopic observations (R~1500) at the NIRSPEC instrument at the W. M. Keck Observatory (see section 3.2 for further details). (6 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- October 2019
- DOI:
- 10.26093/cds/vizier.18670109
- Bibcode:
- 2019yCat..18670109M
- Keywords:
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- Parallaxes: trigonometric;
- Stars: brown dwarf;
- Stars: Y-type;
- Stars: T-type;
- Magnitudes: absolute;
- Photometry: infrared;
- Spectral types;
- Proper motions