7 citations · 16 across the 9 of their papers we have counts for
9 papers
Photometric metallicity of Galactic RR Lyrae stars in the Gaia DR3 era
Mahiguhappriya Prakash, Susmita Das, Harinder P. Singh +1
We present a new, calibrated -band relationship between pulsation period , Fourier parameter , and metallicity [Fe/H] for galactic RR Lyrae stars from the Gaia survey…
A theoretical framework for BL Her stars IV. New period-luminosity relations in the Rubin-LSST filters
Susmita Das, László Molnár, Róbert Szabó +5
We present new theoretical light curves in the Rubin-LSST filters for a fine grid of BL Her models computed using MESA-RSP. We also derive new theoretical period-luminosity (PL) an…
A theoretical framework for BL Her stars III. A case study: Robust light curve optimisation in the LMC
Susmita Das, László Molnár, Gábor B. Kovács +8
We carry out an extensive light curve comparison of BL Her stars using observations from Gaia DR3 and stellar pulsation models computed using MESA-RSP with the goal to obtain the b…
Multi-wavelength Photometric Study of RR Lyrae Variables in the Globular Cluster NGC 5272 (Messier 3)
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh +3
We present a comprehensive photometric study of RR Lyrae stars in the M3 globular cluster, utilising a vast dataset of 3140 optical () CCD images spanning 35 years from astr…
Stellar Variability and Distance Indicators in the Near-infrared in Nearby Galaxies. I. RR Lyrae and Anomalous Cepheids in Draco dwarf spheroidal
Anupam Bhardwaj, Marina Rejkuba, Chow-Choong Ngeow +4
Draco dwarf Spheroidal galaxy (dSph) is one of the nearest and the most dark matter dominated satellites of the Milky Way. We obtained multi-epoch near-infrared (NIR, ) obse…
A theoretical framework for BL Her stars -- II. New period-luminosity relations in the Gaia passbands
Susmita Das, László Molnár, Shashi M. Kanbur +6
We present new theoretical period-luminosity (PL) and period-Wesenheit (PW) relations for a fine grid of convective BL Her, the shortest period T2Cs, models computed using MESA-RSP…
High-resolution Spectroscopic Metallicities of Milky Way Cepheid Standards and their impact on the Leavitt Law and the Hubble constant
Anupam Bhardwaj, Adam G. Riess, Giovanni Catanzaro +10
Milky Way Cepheid variables with accurate {\it Hubble Space Telescope} photometry have been established as standards for primary calibration of the cosmic distance ladder to achiev…
Time-series analyses of Cepheid and RR Lyrae variables in the wide-field variability surveys
A. Bhardwaj, S. M. Kanbur, M. Marconi +5
We discuss time-series analyses of classical Cepheid and RR Lyrae variables in the Galaxy and the Magellanic Clouds at multiple wavelengths. We adopt the Fourier decomposition meth…
The Role of Opacities in Stellar Pulsation
S. M. Kanbur, M. Marconi, A. Bhardwaj +2
We examine the role of opacities in stellar pulsation with reference to Cepheids and RR Lyraes, and examine the effect of augmented opacities on the theoretical pulsation light cur…