NGC 1624 (OCl 403, Cr 53) A very young open cluster

Details NGC 1624 (OCl 403, Cr 53) A very young open cluster NGC 1624 (OCl 403, Cr 53) A very young open cluster

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006ap%26ss.305..399s&link_type=abstract

Astrophysics and Space Science, Volume 305, Issue 4, pp.399-410

Astronomy and Astrophysics

Astrophysics

3

Open Cluster, Photometry, Reddening, Distance Age, Luminosity Function, Initial Mass Function

Scientific paper

We present the first CCD photometric UBVRI observations of the not-so-well-studied open cluster NGC 1624 (OCl 403, Cr 53; α2000 = 04 h 40 m 36 s; δ2000 = + 50˚ 27′ 42″ Trumpler class = I 2 p N). This cluster was observed on 01 February 2004 with the 2 m Himalayan Chandra Telescope at Hanle using a LN2 cooled 2k × 2k CCD. The cluster presents differential reddening with E(B-V) values ranging from 0.70 to 0.90 mag, which could be attributed to the presence of the HII region wherein the cluster is embedded. It is found to be at a distance of 6.025 ± 0.5 kpc and the age of this cluster is estimated to be ˜3.98 × 106 years. In view of these parameters, it can be considered as a young enough cluster located in the direction of the Perseus constellation with the galactic coordinates of l = 155˚.35 and b = + 02 ˚.58. Thus it could also be used as a suitable candidate for tracing the Outer Perseus spiral arm of our Galaxy. The initial mass function slope is derived as 1.65 ± 0.25 by applying the corrections for field star contamination and data incompleteness. This is in good agreement with the Salpeter value within the limits of errors.

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