Photometric study of distant open clusters in the second quadrant: NGC 7245, King 9, King 13 and IC 166 |
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| Authors: | Annapurni Subramaniam Bhuwan Chandra Bhatt |
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| Institution: | Indian Institute of Astrophysics, Bangalore 560034, India;CREST Campus, Indian Institute of Astrophysics, PO Box 19, Hosakote, Bangalore 562114, India |
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| Abstract: | We present a UBV CCD photometric study of four open clusters, NGC 7245, King 9, IC 166 and King 13, located between l = 90° and 135°. All are embedded in a rich Galactic field. NGC 7245 and King 9 are close together in the sky and have similar reddenings. The distances and ages are: NGC 7245, 3.8 ± 0.35 kpc and 400 Myr; King 9 (the most distant cluster in this quadrant), 7.9 ± 1.1 kpc and 3.0 Gyr. King 13 is 3.1 ± 0.3 kpc distant and 300 Myr old. King 9 and IC 166 (4.8 ± 0.5 kpc distant and 1 Gyr old) may be metal-poor clusters ( Z = 0.008) , as estimated from isochrone fitting. The average value of the distance of young clusters from the Galactic plane in the above longitude range and beyond 2 kpc (?47 ± 16 pc, for 64 clusters) indicates that the young disc bends towards the southern latitudes. |
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| Keywords: | open clusters and associations: individual: NGC 7245 open clusters and associations: individual: King 9 open clusters and associations: individual: King 13 open clusters and associations: individual: IC 166 |
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