9 papers
Blue Straggler Stars in Berkeley 18: A Multiwavelength Study of Their Physical Properties and Dynamical Evolution
D. Bisht, Ing-Guey Jiang, K. Belwal +7
Berkeley~18 is an old open cluster in the outer Galactic disk that hosts a population of blue straggler stars (BSSs). We present a comprehensive multiwavelength analysis of its BSS…
Multiwavelength Study of Blue Straggler Stars in Tombaugh 2: Evidence for Binary Mass Transfer and Constraints on Cluster Dynamical State
D. Bisht, Ing-Guey Jiang, K. Belwal +7
We present a focused multiwavelength study of blue straggler stars (BSSs) in the intermediate-age open cluster Tombaugh 2, located in the outer Galactic disk, to constrain the domi…
Dynamical and Photometric Analysis of NGC 146 and King 14: Evidence for a Co-Moving, Unbound Cluster Pair
D. Bisht, Ing-Guey Jiang, W. H. Elsanhoury +9
To understand the nature of the NGC 146-King 14 cluster pair, we conducted a detailed photometric, astrometric, and dynamical study using multiwavelength data from Gaia DR3, Pan-ST…
Revisiting the Orbital Dynamics of the Hot Jupiter WASP-12 b with New Transit Times
Shraddha Biswas, Ing-Guey Jiang, Li-Chin Yeh +10
In this study, we examine the transit timing deviations of the extensively studied hot Jupiter WASP-12 b using a comprehensive dataset of 391 transit light curves. The dataset incl…
The Unexplored Dusty Nova LMCN 2009-05a in the Large Magellanic Cloud
Mohit Singh Bisht, A. Raj, F. M. Walter +4
We present a detailed spectrophotometric study of nova LMCN 2009-05a, located in the Large Magellanic Cloud (LMC). Photometric observations reveal a dust dip in the optical light c…
Investigating Transit Timing Variations in the Ultra-short Period Exoplanet WASP-19b
Shraddha Biswas, Ing-Guey Jiang, Li-Chin Yeh +6
In this study, we present a comprehensive analysis of transit timing variations (TTVs) in the ultra-short-period gas giant WASP-19b, which orbits a G-type main-sequence star. Our a…
Transit Timing Variations of the Sub-Saturn Exoplanet HAT-P-12b
Kaviya Parthasarathy, Hsin-Min Liu, Ing-Guey Jiang +12
We present Transit Timing Variations (TTVs) of HAT-P-12b, a low-density sub-Saturn mass planet orbiting a metal-poor K4 dwarf star. Using 14 years of observational data (2009-2022)…
A Spectrophotometric analysis and dust properties of classical nova V5584 Sgr
Mohit Singh Bisht, A. Raj, F. M. Walter +4
In this work, optical observations of the nova V5584 Sgr are presented. These observations cover different phases including pre-maximum, early decline, and nebular. The spectra are…
Probing the Possible Causes of the Transit Timing Variation for TrES-2b in TESS Era
Shraddha Biswas, D. Bisht, Ing-Guey Jiang +2
Nowadays, transit timing variations (TTVs) are proving to be a very valuable tool in exoplanetary science to detect exoplanets by observing variations in transit times. To study th…