tokens: Acknowledgments The authors are thankful to the anonymous referee for his/her useful comments. HB acknowledges the Inspire Faculty Grant Support (IFA11-PH02) of the Department of Science and Technology, India. The observations reported in this paper were obtained using the 1-m Sampurnanand Telescope, Nainital, India, and the 2-m HCT at IAO, Hanle, the High Altitude Station of the Indian Institute of Astrophysics, Bangalore, India. This publication makes use of data from the Two Micron All Sky Survey (2MASS), which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center, California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
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