Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Nayak, Prasanta K."'
Autor:
Narang, Mayank, Puravankara, Manoj, Vedantham, H. K., Chandra, C. H. Ishwara, De, Ayanabha, Tyagi, Himanshu, Banerjee, Bihan, Nayak, Prasanta K., Surya, Arun, Shridharan, B., Pathak, Vinod C., Tripathi, Mihir
Coherent radio emission with properties similar to planetary auroral signals has been reported from GJ 1151, a quiescent, slow-rotating mid-M star, by the LOFAR Two-metre (120-170 MHz) Sky Survey (LoTSS). The observed {LOFAR} emission is fairly brigh
Externí odkaz:
http://arxiv.org/abs/2409.18507
The Small Magellanic Cloud (SMC) is an irregular dwarf galaxy that has recently undergone an interaction with the Large Magellanic Cloud. The young massive stars in the SMC formed in the disturbed low-metallicity environment are important targets in
Externí odkaz:
http://arxiv.org/abs/2409.13605
Autor:
Banerjee, Bihan, Narang, Mayank, Manoj, P., Henning, Thomas, Tyagi, Himanshu, Surya, Arun, Nayak, Prasanta K., Tripathi, Mihir
Giant planets exhibit diverse orbital properties, hinting at their distinct formation and dynamic histories. In this paper, using $\textit{Gaia}$ DR3, we investigate if and how the orbital properties of Jupiters are linked to their host star properti
Externí odkaz:
http://arxiv.org/abs/2404.16499
Autor:
Nayak, Prasanta K., Narang, Mayank, Manoj, P., Ojha, D. K., Mathew, Blesson, Baug, T., Chandra, S., Vig, S., Maheswar, G., Kamath, U. S.
The paper demonstrates the spectroscopic and photometric capabilities of the Ultra-Violet Imaging Telescope (UVIT) to study T-Tauri stars (TTSs). We present the first UVIT/Far-UV spectrum of a TTS, TW Hya. Based on C IV line luminosity, we estimated
Externí odkaz:
http://arxiv.org/abs/2403.19478
Autor:
Nayak, Prasanta K., Narang, Mayank, Manoj, P., Gorti, Uma, Subramaniam, Annapurni, George, Nayana, Mondal, Chayan
We present results from simultaneous FUV and NUV observations of T-Tauri stars (TTSs) in the Taurus molecular cloud with UVIT/AstroSat. This is the very first UVIT study of TTSs. From the spectral energy distribution of TTSs from FUV to near-IR, we s
Externí odkaz:
http://arxiv.org/abs/2403.01935
Autor:
Bandyopadhyay, Avrajit, Beers, Timothy C, Ezzeddine, Rana, Sivarani, Thirupathi, Nayak, Prasanta K, Pandey, Jeewan C, Saraf, Pallavi, Susmitha, Antony
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 529, Issue 3, pp.2191-2207, 2024
We present a comprehensive analysis of the detailed chemical abundances for a sample of 11 metal-poor, very metal-poor and extremely metal-poor stars ([Fe/H] = -1.65 to [Fe/H] = -3.0) as part of the HESP-GOMPA (Galactic survey Of Metal Poor stArs) su
Externí odkaz:
http://arxiv.org/abs/2402.17250
Autor:
Narang, Mayank, Manoj, P., Chandra, Ishwara, Banerjee, Bihan, Tyagi, Himanshu, Tamura, Motohide, Henning, Thomas, Mathew, Blesson, Lazio, Joseph, Surya, Arun, Nayak, Prasanta K.
In this work, we present the results from a study using the Giant Meterwave Radio Telescope (GMRT) to search for radio {emission} from planets around three evolved stars namely $\alpha$~Tau, $\beta$~UMi, and $\beta$~Gem. Both $\alpha$~Tau and $\beta$
Externí odkaz:
http://arxiv.org/abs/2402.11182
We present a detailed view of cluster formation (CF) to trace the evolution and interaction history of the Magellanic Clouds (MCs) in the last 3.5 Gyr. Using the \textit{Gaia} DR3 data, we parameterized 1710 and 280 star clusters in the Large Magella
Externí odkaz:
http://arxiv.org/abs/2401.05307
Autor:
Nayak, Prasanta K., Narang, Mayank, Puravankara, Manoj, Tyagi, Himanshu, Banerjee, Bihan, Sharma, Saurabh, Pandey, Rakesh, Surya, Arun, Mathew, Blesson, Arun, R., Ujjwal, K., Kartha, Sreeja S.
Publikováno v:
Journal of Astrophysics and Astronomy, 2023, Volume 44, Issue 2, article id.83
With the third data release of the Gaia mission $Gaia$ DR3 with its precise photometry and astrometry, it is now possible to study the behaviour of stars at a scale never seen before. In this paper, we developed new criteria to identify T-Tauri stars
Externí odkaz:
http://arxiv.org/abs/2311.11781
Autor:
Narang, Mayank, Puravankara, Manoj, Tyagi, Himanshu, Nayak, Prasanta K., Sharma, Saurabh, Surya, Arun, Banerjee, Bihan, Mathew, Blesson, Ghosh, Arpan, Verma, Aayushi
Optical spectroscopy offers the most direct view of the stellar properties and the accretion indicators. Standard accretion tracers, such as $H\beta$, $H\alpha$, and, Ca II triplet lines, and most photospheric features, fall in the optical wavelength
Externí odkaz:
http://arxiv.org/abs/2308.12689