| Name: Gourav Banerjee |
| Affiliation: IIA, VBO |
| Conference ID: ASI2026_917 |
| Title: CAZBeSSP: an upcoming online spectral database for Be stars using the 1-m telescope at VBO, Kavalur |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: Gourav Banerjee(VBO, Indian Institute of Astrophysics), Annapurni Subramaniam(Indian Institute of Astrophysics), Nirmal Rajak(Presidency University, Kolkata), Smruti S Hota(Pondicherry University), Maheswar Gopinathan(Indian Institute of Astrophysics) |
| Abstract: Classical Be (Be) stars are rapidly rotating, massive, main-sequence, B-type stars showing emission lines of different elements in their spectra, which originate from their surrounding equatorial, gaseous discs. These emission lines provide important information regarding the disc properties of Be stars. These stars are known to display variability of emission lines, extreme cases can lead to the complete disappearance of their circumstellar discs. So continuous spectral monitoring of Be stars is necessary to track the line profile changes that help us to better understand their disc dissipation and formation timescales and different other properties of such exotic stars. However, any online spectral database for Be stars is not known apart from the BeSS (Neiner et al. 2011), which is an accumulation of over 3, 20, 000 optical spectra for 2455 separate Be stars obtained by both amateur and professional astronomers. In this context, we present a new online spectral database of Be stars that have been developed using H-alpha centric spectra obtained from the 1-m CZT facility at VBO, Kavalur since 2009. This is the first online spectral database of Be stars developed using a dedicated professional telescope. Initial characterization of data has been performed for over 1100 spectra of more than 50 separate Be stars that are ready to be uploaded in the database. We plan to update the database on regular basis, which will facilitate the Be star community to download and study these Be stars. |
