activity
19952023
most citedGaia Data Release 2: Photometric content and validation

756 citations · 8.8k across the 210 of their papers we have counts for

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77 papers · 1 filter

astro-ph.SR2023

A multi-wavelength analysis of BL Her stars: Models versus Observations

S. Das, L. Molnár, S. M. Kanbur +6

We present new theoretical period--luminosity (PL) and period--radius (PR) relations at multiple wavelengths (Johnson--Cousins--Glass and {\sl Gaia} passbands) for a fine grid of B…

astro-ph.SR2023★ 5 cited

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…

astro-ph.SR2023★ 18 cited

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…

astro-ph.SR2023★ 22 cited

Cepheid metallicity in the Leavitt law (C-MetaLL) survey -- III. Simultaneous derivation of the Gaia parallax offset and Period-Luminosity-Metallicity coefficients

R. Molinaro, V. Ripepi, M. Marconi +7

Classical Cepheids (DCEPs) are the most important standard candles in the extra-galactic distance scale thanks to the Period-Luminosity (), Period-Luminosity-Color ($\rm PL…

astro-ph.SR2022★ 11 cited

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…

astro-ph.SR2022★ 44 cited

An updated metal-dependent theoretical scenario for Classical Cepheids

Giulia De Somma, Marcella Marconi, Roberto Molinaro +3

To properly quantify possible residual systematic errors affecting the Classical Cepheid distance scale, a detailed theoretical scenario is recommended. By extending the set of non…