Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Snehalata Sahu"'
Autor:
Lou Baya Ould Rouis, J. J. Hermes, Boris T. Gänsicke, Snehalata Sahu, Detlev Koester, P.-E. Tremblay, Dimitri Veras, Jay Farihi, Tyler M. Heintz, Nicola Pietro Gentile Fusillo, Seth Redfield
Publikováno v:
The Astrophysical Journal, Vol 976, Iss 2, p 156 (2024)
As the descendants of stars with masses less than 8 M _⊙ on the main sequence, white dwarfs provide a unique way to constrain planetary occurrence around intermediate-mass stars (spectral types BAF) that are otherwise difficult to measure with radi
Externí odkaz:
https://doaj.org/article/f138ba66338f4b0085891f5820dc82fa
Autor:
Arvind K. Dattatrey, R. K. S. Yadav, Sharmila Rani, Annapurni Subramaniam, Gaurav Singh, Snehalata Sahu, Ravi S. Singh
Publikováno v:
The Astrophysical Journal, Vol 943, Iss 2, p 130 (2023)
We report the discovery of extremely low mass white dwarfs (ELM WDs) as a companion of blue straggler stars (BSSs) in the Galactic globular cluster NGC 362 using images from AstroSat's Ultra Violet Imaging Telescope (UVIT). Spectral energy distributi
Externí odkaz:
https://doaj.org/article/7eda8cb1c7e94267a68ff6aa3345530d
Autor:
Ranjan Kumar, Ananta C Pradhan, Snehalata Sahu, Annapurni Subramaniam, Sonika Piridi, Santi Cassisi, Devendra K Ojha
We present a far-ultraviolet (FUV) study of hot stellar populations in the second parameter pair globular clusters (GCs) M3 and M13, as a part of the Globular cluster UVIT Legacy Survey program (GlobULeS). We use observations made with F148W and F169
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aab4a885e0e88ea1509d54419d3d8a84
Autor:
Deepthi S. Prabhu, Annapurni Subramaniam, Snehalata Sahu, Chul Chung, Nathan W. C. Leigh, Emanuele Dalessandro, Sourav Chatterjee, N. Kameswara Rao, Michael Shara, Patrick Côté, Samyaday Choudhury, Gajendra Pandey, Aldo A. R. Valcarce, Gaurav Singh, Joesph E. Postma, Sharmila Rani, Avrajit Bandyopadhyay, Aaron M. Geller, John Hutchings, Thomas Puzia, Mirko Simunovic, Young-Jong Sohn, Sivarani Thirupathi, Ramakant Singh Yadav
We present the first comprehensive study of the most massive globular cluster Omega Centauri in the far-ultraviolet (FUV) extending from the center to ~ 28% of the tidal radius using the Ultraviolet Imaging Telescope aboard AstroSat. A comparison of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe51737f65297e71f1cf62ac973e3b27
http://arxiv.org/abs/2210.05160
http://arxiv.org/abs/2210.05160
Autor:
Snehalata Sahu, Annapurni Subramaniam, Gaurav Singh, Ramakant Yadav, Aldo R Valcarce, Samyaday Choudhury, Sharmila Rani, Deepthi S Prabhu, Chul Chung, Patrick Côté, Nathan Leigh, Aaron M Geller, Sourav Chatterjee, N Kameswara Rao, Avrajit Bandyopadhyay, Michael Shara, Emanuele Dalessandro, Gajendra Pandey, Joesph E Postma, John Hutchings, Mirko Simunovic, Peter B Stetson, Sivarani Thirupathi, Thomas Puzia, Young-Jong Sohn
We present the first results of eight Globular Clusters (GCs) from the AstroSat/UVIT Legacy Survey program GlobULeS based on the observations carried out in two FUV filters (F148W and F169M). The FUV-optical and FUV-FUV color-magnitude diagrams (CMDs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::940036d1c8aff1dd977794f4e74ef3c7
Autor:
Arvind K. Dattatrey, R. K. S. Yadav, Sharmila Rani, Annapurni Subramaniam, Gaurav Singh, Snehalata Sahu, Ravi S. Singh
We report the discovery of extremely low-mass white dwarfs (ELM WDs) as a companion of blue straggler stars (BSSs) in the Galactic globular cluster NGC 362 using images from AstroSats Ultra Violet Imaging Telescope (UVIT). Spectral Energy Distributio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4d9ae18def3e4ade2dab8a9c7959b6a
Publikováno v:
Journal of Astrophysics and Astronomy. 42
A recent study of hot (20,000 to 30,000 K) extreme horizontal branch (EHB) stars in globular clusters (GCs) has led to the discovery of their variability. It is suggested that this variability is driven by the projected rotation of magnetic spots on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::85e8cb2337ddaace0e4d799ac9de9e6b
https://doi.org/10.1007/s12036-020-09679-y
https://doi.org/10.1007/s12036-020-09679-y
We present the study of dynamical status of the globular cluster NGC 1851. A combination of multiwavelength space and ground-based data sets are used for the present analysis. In order to select the genuine cluster members, we used the astro-photomet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::031a506ae02f4fe5e6ef5fdbe5f23dfe
http://arxiv.org/abs/2102.02814
http://arxiv.org/abs/2102.02814
Autor:
Snehalata Sahu, Annapurni Subramaniam, Sharmila Rani, Sindhu Pandey, Gajendra Pandey, Chayan Mondal
We present the UV photometry of the old open cluster NGC188 obtained using images acquired with Ultraviolet Imaging Telescope (UVIT) on board the ASTROSAT satellite, in two far-UV (FUV) and one near-UV (NUV) filters. UVIT data is utilised in combinat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::de2e4cfb81179712b6eb97e3dd25042a
http://arxiv.org/abs/2012.00510
http://arxiv.org/abs/2012.00510
We present a study of Far Ultraviolet (FUV) bright horizontal branch (HB) stars to understand the peculiarities seen in the HB sequence of the Globular Cluster NGC 1851, using ground and space based multi-wavelength data. Optical and UV color magnitu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6e8b6b18477c4422361febd0ff4bd52