Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Banerjee, Gourav"'
Autor:
Bhattacharyya, Suman, Mathew, Blesson, Banerjee, Gourav, G, Sindhu, Muneer, S., Kumar, S. Pramod, Joshi, Santosh
In our previous study (Bhattacharyya et al., 2022), HD~54786, the optical counterpart of the MAXI J0709-159 system, was identified to be an evolved star, departing from the main sequence, based on comparisons with non-X-ray binary systems. In this pa
Externí odkaz:
http://arxiv.org/abs/2404.13303
Autor:
Banerjee, Gourav, Mathew, Blesson, Bhattacharyya, Suman, Devaraj, Ashish, Kartha, Sreeja S, Joshi, Santosh
In a recent study, Banerjee et al. (2021) produced an atlas of all major emission lines found in a large sample of 115 Galactic field Be stars using the 2-m Himalayan Chandra Telescope (HCT) facility located at Ladakh, India. This paper presents our
Externí odkaz:
http://arxiv.org/abs/2404.10339
Autor:
Jagadeesh, Madhu Kashyap, Mathew, Blesson, Paul, K. T., Banerjee, Gourav, Bhattacharyya, Suman, Anusha, R., S, Pramod Kumar
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 older than 100 Myr. We found that the H alpha emission strength of mos
Externí odkaz:
http://arxiv.org/abs/2403.10660
Autor:
Dewangan, L. K., Maity, A. K., Mayya, Y. D., Bhadari, N. K., Bhattacharyya, Suman, Sharma, Saurabh, Banerjee, Gourav
We report the discovery of intertwined/entangled sub-structures towards the bubble wall of NGC 3324 below a physical scale of 4500 AU, which is the sharp edge/ionization front/elongated structure traced at the interface between the HII region and the
Externí odkaz:
http://arxiv.org/abs/2309.13351
Autor:
Banerjee, Gourav, Mathew, Blesson, Paul, K. T., Subramaniam, Annapurni, Balan, Anjusha, Bhattacharyya, Suman, Anusha, R., Moosa, Deeja, Dheeraj, C S, Charly, Aleeda, Raghu, Megha
Variability is a commonly observed property of classical Be stars (CBe) stars. In extreme cases, complete disappearance of the H{\alpha} emission line occurs, indicating a disc-less state in CBe stars. The disc-loss and reappearing phases can be iden
Externí odkaz:
http://arxiv.org/abs/2209.13230
Autor:
Bhattacharyya, Suman, Mathew, Blesson, Ezhikode, Savithri H, Muneer, S, G, Selvakumar, G, Maheswer, Arun, R., Anilkumar, Hema, Banerjee, Gourav, S, Pramod Kumar, Kartha, Sreeja S, Paul, KT, Velu, C.
We present a follow-up study on the recent detection of two X-ray flaring events by MAXI/GSC observations in soft and hard X-rays from MAXI J0709-159 in the direction of HD 54786 (LY CMa), on 2022 January 25. The X-ray luminosity during the flare was
Externí odkaz:
http://arxiv.org/abs/2206.04473
Autor:
Jagadeesh, Madhu Kashyap, Mathew, Blesson, Paul, K. T., Banerjee, Gourav, Subramaniam, Annapurni, Arun, R.
We performed the slitless spectroscopic survey to identify Classical (CBe) stars in open clusters 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 dete
Externí odkaz:
http://arxiv.org/abs/2204.00248
Autor:
Banerjee, Gourav, Panda, Binata
Publikováno v:
Journal of High Energy Physics 11(2021)214
We reviewed the field redefinition approach of Seeley-DeWitt expansion for the determination of Seeley-DeWitt coefficients from arXiv:1505.01156. We apply this approach to compute the first three Seeley-DeWitt coefficients for \say{non-minimal} $\mat
Externí odkaz:
http://arxiv.org/abs/2109.04407
Autor:
Bhattacharyya, Suman, Mathew, Blesson, Banerjee, Gourav, Anusha, R., Paul, KT, Kartha, Sreeja S
Pre-main sequence (PMS) stars evolve into main sequence (MS) phase over a period of time. Interestingly, we found a scarcity of studies in existing literature that examines and attempts to better understand the stars in PMS to MS transition phase. Th
Externí odkaz:
http://arxiv.org/abs/2108.07866
Autor:
Anusha, R., Mathew, Blesson, Shridharan, B., Arun, R., Nidhi, S., Banerjee, Gourav, Kartha, Sreeja S., Paul, K. T., Bhattacharyya, Suman
We report the first systematic study to identify and characterize a sample of classical Ae stars in the Galaxy. The spectra of these stars were retrieved from the A-star catalog using the Large sky Area Multi-Object fiber Spectroscopic Telescope (LAM
Externí odkaz:
http://arxiv.org/abs/2012.09782