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    • MADHU KASHYAP JAGADEESH

      Articles written in Journal of Astrophysics and Astronomy

    • Volume 42 All articles Published: 13 November 2021 Article ID 0109

      Study of classical Be stars in open clusters older than 100 Myr

      MADHU KASHYAP JAGADEESH BLESSON MATHEW K. T. PAUL GOURAV BANERJEE ANNAPURNI SUBRAMANIAM R. ARUN

      More Details Abstract Fulltext PDF

      We performed the slitless spectroscopic survey to identify classical Be (CBe) stars in openclusters older than 100 Myr. Observing a sample of 71 open clusters, we identified 13 CBe stars in 11 open clusters, one of, which (TYC 2679-432-1) is a new detection. The 13 CBe stars show both H$\alpha$ in emission and IR excess, which confirm that they possess gaseous circumstellar discs. Two more CBe stars are found toexhibit H$\alpha$ in absorption for the first time, indicating that might be passing through disc-less episode presently. The spectral-type estimation is done for all these 15 stars and it is noticed that they belong to B0.5–B8 type. Moreover, we found that the distribution of our sample is peaking near late B-types as expected.

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      Since January 2016, the Journal of Astrophysics and Astronomy has moved to Continuous Article Publishing (CAP) mode. This means that each accepted article is being published immediately online with DOI and article citation ID with starting page number 1. Articles are also visible in Web of Science immediately. All these have helped shorten the publication time and have improved the visibility of the articles.

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