dc.description.abstract |
We present a multiwavelength study of the NGC281 complex, which contains the young cluster IC1590 at the
center, using deep wide-field optical UBVIc photometry, slitless spectroscopy along with archival data sets in the
near-infrared (NIR) and X-ray regions. The extent of IC 1590 is estimated to be ~6.5 pc. The cluster region shows
a relatively small amount of differential reddening. The majority of the identified young stellar objects (YSOs) are
low-mass PMS stars having age <1–2 Myr and mass 0.5–3.5M☉. The slope (Γ) of the mass function for IC 1590, in the mass range 2 < M= M☉≤54, is found to be -1.11 ± 0.15. The slope of the K-band luminosity function (0.37 ± 0.07) is similar to the average value (~0.4) reported for young clusters. The distribution of gas and dust obtained from the IRAS, CO, and radio maps indicates clumpy structures around the central cluster. The radial
distribution of the young stellar objects, their ages, Δ(H - K) NIR-excess, and the fraction of classical T Tauri
stars suggest triggered star formation at the periphery of the cluster region. However, deeper optical, NIR, and MIR
observations are needed to have a conclusive view of the star-formation scenario in the region. The properties of the
Class 0/I and Class II sources detected by using the Spitzer mid-infrared observations indicate that a majority of the
Class II sources are X-ray emitting stars, whereas X-ray emission is absent from the Class 0/I sources. The spatial
distribution of Class 0/I and Class II sources reveals the presence of three sub-clusters in the NGC 281West region. |
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