19 citations · 26 across the 9 of their papers we have counts for
11 papers
Post-perihelion Photometric and Spectroscopic Monitoring of the Interstellar Comet 3I/ATLAS
Goldy Ahuja, Shashikiran Ganesh, K. Aravind +12
The third interstellar object, comet 3I/ATLAS, was observed using various Indian telescopes during its post-perihelion evolution. We carried out imaging and spectroscopic observati…
Host-star metallicities and kinematics of directly imaged brown-dwarf companions
C. Swastik, R. K. Banyal, M. Muduli +15
Brown dwarfs are common as free-floating objects but rare as close companions to Sun-like stars, a disparity known as the "brown-dwarf desert". Host-star metallicity can constrain…
A Quiet Host in an Active Planet-Forming Disk: Optical Spectroscopy of WISPIT 2
C. Swastik, M. Bestha, L. S. Sonith +11
WISPIT 2 is a young pre-main-sequence star hosting a multi-ringed transition disk and two directly imaged protoplanets, including the accreting WISPIT 2b, making it the closest kno…
A new broadband atmospheric dispersion corrector for HROS-TMT
Manjunath Bestha, Thirupathi Sivarani, Bachar Wehbe +7
Atmospheric dispersion causes light from celestial objects with different wavelengths to refract at varying angles as it passes through Earth's atmosphere. This effect results in a…
A chemodynamical study of -process-enhanced stars
Pallavi Saraf, Thirupathi Sivarani, Carlos Allende Prieto +2
The -process enrichment in the Galaxy still remains elusive with regard to its nucleosynthesis conditions and the astrophysical sites where it occurs. As part of ongoing efforts…
An Initial Assessment of the Hanle Echelle Spectrograph for Exoplanet Atmosphere Studies
Manjunath Bestha, Athira Unni, T. Sivarani +6
Transmission spectroscopy is an effective technique for probing exoplanetary atmospheres. While most observations have relied on space facilities such as HST and JWST, ground-based…
On the Origin of Neutron-capture Elements in r-I and r-II Stars: A Differential-abundance Analysis
Pallavi Saraf, Thirupathi Sivarani, Timothy C. Beers +4
We present a strictly line-by-line differential analysis of a moderately -process-enhanced star (-I: HD~107752) with respect to a strongly -process-enhanced star (-II:…
A chemodynamical analysis of bright metal-poor stars from the HESP-GOMPA survey -- Indications of a non-prevailing site for light r-process elements
Avrajit Bandyopadhyay, Timothy C Beers, Rana Ezzeddine +5
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…
Possibilities of Identifying Members from Milky Way Satellite Galaxies using Unsupervised Machine Learning Algorithms
Devika K Divakar, Pallavi Saraf, Sivarani Thirupathi +1
A detailed study of stellar populations in Milky Way (MW) satellite galaxies remains an observational challenge due to their faintness and fewer spectroscopically confirmed member…
Chemodynamic analysis of four -process enhanced stars observed with GTC
Pallavi Saraf, Thirupathi Sivarani
Here, we delineate a comprehensive abundance analysis of four -process enhanced metal-poor stars observed with HORuS spectrograph on a 10-m class telescope, GTC. The high signal…
Decoding the compositions of four bright -process-enhanced stars
Pallavi Saraf, Carlos Allende Prieto, Thirupathi Sivarani +3
There has been a concerted effort in recent years to identify the astrophysical sites of the -process that can operate early in the Galaxy. The discovery of many -process-enh…