Mon. Not. R. Astron. Soc., 454, 3597-3612 (2015/December-3)
The young cluster NGC 2282: a multiwavelength perspective.
DUTTA S., MONDAL S., JOSE J., DAS R.K., SAMAL M.R. and GHOSH S.
Abstract (from CDS):
We present the analysis of the stellar content of NGC 2282, a young cluster in the Monoceros constellation, using deep optical BVI and INT Photometric Hα Survey (IPHAS) photometry along with infrared (IR) data from UKIRT Infrared Deep Sky Survey and Spitzer-IRAC. Based on the stellar surface density analysis using nearest neighbourhood method, the radius of the cluster is estimated as ∼ 3.15 arcmin. From optical spectroscopic analysis of eight bright sources, we have classified three early B-type members in the cluster, which includes, HD 289120, a previously known B2V-type star, a Herbig Ae/Be star (B0.5 Ve) and a B5 V star. From spectrophotometric analyses, the distance to the cluster has been estimated as ∼ 1.65 kpc. The K-band extinction map is estimated using nearest neighbourhood technique, and the mean extinction within the cluster area is found to be AV ∼ 3.9mag. Using IR colour-colour criteria and Hα-emission properties, we have identified a total of 152 candidate young stellar objects (YSOs) in the region, of which, 75 are classified as Class II, nine are Class I YSOs. Our YSO catalogue also includes 50 Hα-emission line sources, identified using slitless spectroscopy and IPHAS photometry data. Based on the optical and near-IR colour-magnitude diagram analyses, the cluster age has been estimated to be in the range of 2-5Myr, which is in agreement with the estimated age from disc fraction ( ∼ 58 per cent). Masses of these YSOs are found to be ∼ 0.1-2.0 M☉. Spatial distribution of the candidate YSOs shows spherical morphology, more or less similar to the surface density map.
© 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)
stars: formation - stars: low-mass - stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/Be - HII region - stars: low-mass
VizieR on-line data:
<Available at CDS (J/MNRAS/454/3597): table2.dat table3.dat table4.dat>
Table 2: [DMJ2015] NNNN (Nos 1-5601).
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