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Optical and near-IR photometric study of the open cluster NGC 637 and NGC 957
R. K. S. Yadav, Brijesh Kumar, A. Subramaniam +2
We present UBVRI CCD photometry in the region of the open clusters NGC 637 and NGC 957. The radii are found to be 4.2 arcmin and 4.3 arcmin. Their reddenings E(B-V) are 0.64+/-0.05…
Line of sight depth of the Large and Small Magellanic Clouds
Annapurni Subramaniam, Smitha Subramanian
We used the red clump stars from the Optical Gravitational Lensing Experiment (OGLE II) survey and the the Magellanic Cloud Photometric Survey (MCPS), to estimate the line of sight…
Pre-main sequence stars, emission stars and recent star formation in the Cygnus Region
Bhavya B, Blesson Mathew, Annapurni Subramaniam
The recent star formation history in the Cygnus region is studied using 5 clusters (IC 4996, NGC 6910, Berkeley 87, Biurakan 2 and Berkeley 86). The optical data from the literatur…
Be phenomenon in open clusters: Results from a survey of emission-line stars in young open clusters
Blesson Mathew, Annapurni Subramaniam, Bhuwan Chandra Bhatt
Emission-line stars in young open clusters are identified to study their properties, as a function of age, spectral type and their evolutionary state. 207 open star clusters were o…
Photometric study of distant open clusters in the second quadrant: NGC 7245, King 9, King 13 and IC 166
Annapurni Subramaniam, Bhuwan Chandra Bhatt
We present a UBV CCD photometric study of four open clusters, NGC 7245, King 9, IC 166 and King 13, located between . All are embedded in a rich galactic field. N…
Fundamental parameters of six neglected old open clusters
Giovanni Carraro, Annapurni Subramaniam, Kenneth A. Janes
In this paper we present the first CCD photometry of six overlooked old open clusters (Berkeley 44, NGC 6827, Berkeley 52, Berkeley 56, Skiff 1 and Berkeley 5) and derive est…