VizieR Online Data Catalog: Brown dwarf population in NGC 2264 (Pearson+, 2020)
Abstract
The basis of this investigation are observations obtained with the Victor Blanco 4-m telescope at the Cerro Tololo Interamerica Observatory (CTIO) in Chile. We observed over six nights from 2010 January 18 to 23, as part of NOAO proposal 2009B-0090, using the 64-megapixel MOSAIC II camera. The field was selected to cover the majority of NGC 2264. We observed in the Mosaic I-band filter (c6028), which has a central wavelength of 805nm and a full width at half-maximum (FWHM) of 150nm. A summary of the observations is given in Table 1 of the article.
The I-band source catalogue was then cross referenced with a catalogue of deep NIR J (1.25μm), H (1.65μm), and K (2.2μm) photometry from the FLAMINGOS giant molecular cloud survey (Elston 1998SPIE.3354..404E; Levine et al. 2006ApJ...646.1215L, Cat. J/ApJ/646/1215). The FLAMINGOS catalogue was chosen as it provided the deepest available NIR photometry for the cluster. Bright sources will typically become saturated in the MOSAIC-II I-band data well before The FLAMINGOS JHK data. The spatial coverage of the FLAMINGOS data is very similar to the MOSAIC-II data, with >95 per cent overlap. We have used optical, NIR, and mid-IR photometry, time series data, extinction maps, and, to some extent, Gaia kinematics to construct a catalogue of 902 faint red sources with indicators of youth for NGC 2264. Within this catalogue, we select 429 brown dwarf candidates based on their IR colours. (1 data file).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- August 2023
- Bibcode:
- 2023yCat..74992292P
- Keywords:
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- Stars: brown dwarf;
- Optical;
- Infrared