{"paper":{"title":"VR CCD photometry of variable stars in globular cluster NGC 4147","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Aashish Gupta, A. K. Pandey, Biman J. Medhi, B. Krishna Reddy, Brijesh Kumar, Hum Chand, Jaysreekar Pant, J. C. Pandey, Kuntal Misra, Mohit Joshi, Mukesh K. Jaiswar, Nandish Nanjappa, Purushottam, R. K. S. Yadav, Sanjeet Sahu, Saurabh Sharma, Shashi B. Pandey, Shobhit Yadav, Sneh Lata, Tarun Bangia, T. S. Kumar, Wahab Uddin, Yogesh C. Joshi","submitted_at":"2019-05-20T12:03:11Z","abstract_excerpt":"We present results of a search for variable stars in a region of the globular cluster NGC 4147 based on photometric observations with 4k x 4k CCD imager mounted at the axial port of the recently installed 3.6 m Devasthal optical telescope at Aryabhatta Research Institute of Observational Sciences, Nainital, India. We performed time series photometry of NGC 4147 in V and R bands, and identified 42 periodic variables in the region of NGC 4147, 28 of which have been detected for the first time. Seventeen variable stars are located within the half light radius $\\lesssim$ 0.48 arcmin, of which 10 s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08249","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}