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astro-ph.SR2024
Optical Spectroscopy of Classical Be Stars in Old Open Clusters
Madhu Kashyap Jagadeesh, Blesson Mathew, K. T. Paul +4
We performed the optical spectroscopy of 16 classical Be stars in 11 open clusters older than 100 Myr. Ours is the first spectroscopic study of classical Be stars in open clusters…
astro-ph.HE2024
Flares during Eclipses of High Mass X-ray Binary Systems Vela X-1, 4U 1700-37, and LMC X-4
Ketan Rikame, Biswajit Paul, Rahul Sharma +2
In eclipsing X-ray binary systems, the direct X-ray emission is blocked by the companion star during the eclipse. We observe only reprocessed emission that contains clues about the…