1.5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- National Central UniversityTW30 papers
- University of DelhiIN28 papers
- Astronomical Observatory of CapodimonteIT18 papers
- University of Illinois Urbana-ChampaignUS18 papers
- University of TorontoCA18 papers
- Eötvös Loránd UniversityHU15 papers
- University of FloridaUS14 papers
- University of Maryland, College ParkUS14 papers
- Rochester Institute of TechnologyUS13 papers
- California Institute of TechnologyUS12 papers
- Center for Astrophysics Harvard & SmithsonianUS12 papers
- Cornell UniversityUS12 papers
41 papers · 1 filter
The effect of metallicity on the Leavitt Law using phase-dependent properties of classical Cepheids
Gautam Bhuyan, Shashi Kanbur, Sukanta Deb +5
The absolute calibration of period-luminosity (PL) relations of Cepheids in the Milky Way (MW) and its nearby galaxies has been a cornerstone in determining extragalactic distances…
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…
Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models
Nitesh Kumar, Anupam Bhardwaj, Harinder P. Singh +4
We present a new technique to generate the light curves of RRab stars in different photometric bands ( and bands) using Artificial Neural Networks (ANN). A pre-computed grid…
A multiphase study of theoretical and observed light curves of classical Cepheids in the Magellanic Clouds
Kerdaris Kurbah, Sukanta Deb, Shashi M. Kanbur +5
We present an analysis of the theoretical and observed light curve parameters of the fundamental mode (FU) classical Cepheids in the Magellanic Clouds in - and - photometric…
Precise Empirical Determination of Metallicity Dependence of Near-infrared Period-Luminosity Relations for RR Lyrae Variables
Anupam Bhardwaj, Marcella Marconi, Marina Rejkuba +9
RR Lyrae variables are excellent population II distance indicators thanks to their well-defined period-luminosity relations (PLRs) at infrared wavelengths. We present results of ne…
Near-infrared observations of RR Lyrae and Type II Cepheid variables in the metal-rich bulge globular cluster NGC 6441
A. Bhardwaj, S. M. Kanbur, M. Rejkuba +4
NGC 6441 is a bulge globular cluster with an unusual horizontal branch morphology and a rich population of RR Lyrae (RRL) and Type II Cepheid (T2C) variables that is unexpected for…
Period-Colour and Amplitude-Colour relations for OGLE- Scuti stars in the Galactic Bulge and LMC
Mami Deka, Shashi M. Kanbur, Sukanta Deb +4
We present an analysis on the behaviour of the Galactic bulge and the Large Magellanic Cloud (LMC) Scuti stars in terms of period-colour and amplitude-colour (PCAC) relations a…
RR Lyrae variables in Messier 53: Near-infrared Period--Luminosity relations and the calibration using Gaia Early Data Release 3
Anupam Bhardwaj, Marina Rejkuba, Richard de Grijs +6
We present new near-infrared, , Period--Luminosity relations (PLRs) for RR Lyrae variables in the Messier 53 (M53 or NGC 5024) globular cluster. Multi-epoch observat…
A theoretical framework of BL Her stars. I. Effect of metallicity and convection parameters on period-luminosity and period-radius relations
Susmita Das, Shashi M. Kanbur, Radoslaw Smolec +3
We present a new grid of convective BL Herculis models using the state-of-the-art 1D non-linear radial stellar pulsation tool MESA-RSP. We investigate the impact of metallicity and…
A study of the stellar photosphere-hydrogen ionisation front interaction in pulsating variables using period-color relations
Susmita Das, Shashi M. Kanbur, Earl P. Bellinger +2
Period-color (PC) relations may be used to study the interaction of the stellar photosphere and the hydrogen ionization front (HIF). RR Lyraes (RRLs) and long period classical Ceph…
Near-infrared Census of RR Lyrae variables in the Messier 3 globular cluster and the Period--Luminosity Relations
Anupam Bhardwaj, Marina Rejkuba, Richard de Grijs +4
We present new near-infrared () time-series observations of RR Lyrae variables in the Messier 3 (NGC 5272) globular cluster using the WIRCam instrument at the 3.6-m Canada F…
The stellar photosphere-hydrogen ionization front interaction in Classical Pulsators: a theoretical explanation for observed period-colour relations
Susmita Das, Shashi M. Kanbur, Earl P. Bellinger +6
Period-colour and amplitude-colour (PCAC) relations can be used to probe both the hydrodynamics of outer envelope structure and evolutionary status of Cepheids and RR Lyraes. In th…
When a Period Is Not a Full Stop: Light Curve Structure Reveals Fundamental Parameters of Cepheid and RR Lyrae Stars
Earl P. Bellinger, Shashi M. Kanbur, Anupam Bhardwaj +1
The period of pulsation and the structure of the light curve for Cepheid and RR Lyrae variables depend on the fundamental parameters of the star: mass, radius, luminosity, and effe…
Multiwavelength Period-Luminosity and Period-Luminosity-Color relations at maximum-light for Mira variables in the Magellanic Clouds
Anupam Bhardwaj, Shashi Kanbur, Shiyuan He +8
We present Period-Luminosity and Period-Luminosity-Color relations at maximum-light for Mira variables in the Magellanic Clouds using time-series data from the Optical Gravitationa…
On the variation of light curve parameters of RR Lyrae variables at multiple wavelengths
Susmita Das, Anupam Bhardwaj, Shashi M. Kanbur +2
We present a detailed light curve analysis of RR Lyrae variables at multiple wavelengths using Fourier decomposition method. The time-series data for RR Lyrae variables in the Gala…
Near-infrared observations of OGLE classical and type II Cepheid variables in the LMC
A. Bhardwaj, L. M. Macri, S. M. Kanbur +2
We present results from the Large Magellanic Cloud Near-infrared Synoptic Survey (LMCNISS) for classical and type II Cepheid variables that were identified by the Optical Gravitati…
Large Magellanic Cloud Near-Infrared Synoptic Survey. V. Period-Luminosity Relations of Miras
Wenlong Yuan, Lucas M. Macri, Shiyuan He +3
We study the near-infrared properties of 690 Mira candidates in the central region of the Large Magellanic Cloud, based on time-series observations at JHKs. We use densely-sampled…
Galactic Bulge Population II Cepheids in the VVV Survey: Period-Luminosity Relations and a Distance to the Galactic Center
A. Bhardwaj, M. Rejkuba, D. Minniti +7
We present the near-infrared observations of population II Cepheids in the Galactic bulge from VVV survey. We identify 340 population II Cepheids in the Galactic bulge from VVV sur…
Multiwavelength Light Curve Parameters of Cepheid Variables
Anupam Bhardwaj, Shashi M. Kanbur, Marcella Marconi +3
We present a comparative analysis of theoretical and observed light curves of Cepheid variables using Fourier decomposition. The theoretical light curves at multiple wavelengths ar…
The additional-mode garden of RR Lyrae stars
L. Molnár, E. Plachy, P. Klagyivik +6
Space-based photometric missions revealed a surprising abundance of millimagnitude-level additional modes in RR Lyrae stars. The modes that appear in the modulated fundamental-mode…
Large Magellanic Cloud Near-Infrared Synoptic Survey. IV. Leavitt Laws for Type II Cepheid Variables
Anupam Bhardwaj, Lucas M. Macri, Marina Rejkuba +3
We present time-series observations of Population \rom{2} Cepheids in the Large Magellanic Cloud at near-infrared () wavelengths. Our sample consists of 81 variables with ac…
Period-Color and Amplitude-Color Relations at Maximum and Minimum Light for RR Lyrae Stars in the SDSS Stripe 82 Region
Chow-Choong Ngeow, Shashi M. Kanbur, Anupam Bhardwaj +2
Investigation of period-color (PC) and amplitude-color (AC) relations at the maximum and minimum light can be used to probe the interaction of the hydrogen ionization front (HIF) w…
Updated 24 Period-Luminosity Relation Derived from Galactic Cepheids
Chow-Choong Ngeow, Saurjya Sarkar, Anupam Bhardwaj +2
In this work, we updated the catalog of Galactic Cepheids with photometry by cross-matching the positions of known Galactic Cepheids to the recently released MIPSGA…