*** Student-led papers with me as main supervisor/mentor * Student-led papers
Refereed Journal Articles (19 first-author, total 53)
Bhardwaj, A., Riess, A., Catanzaro, G., et al; 2023, ApJ Letters, 955L, 13B - High-resolution Spectroscopic Metallicities of Milky Way Cepheid Standards and their impact on the Leavitt Law and the Hubble constant
Bhardwaj A., Marconi, M.; Rejkuba, M.; et al; 2023, ApJ Letters, 944, L51 - Precise Empirical Determination of Metallicity Dependence of Near-infrared Period-Luminosity Relations for RR Lyrae Variables
*** Kumar, N.; Bhardwaj A., Singh, H.P.; et al; 2023, MNRAS, 522, 1504 - Predicting light curves of RR Lyrae variables using artificial neural network based interpolation of a grid of pulsation models
Ngeow, C. -C., Ou, Jia-Yu, Bhardwaj, A., et al; 2023, AJ, 166, 96. - Zwicky Transient Facility and Globular Clusters: The gr-band Period-Luminosity Relations for Mira Variables at Maximum Light and their Applications to Local Galaxies
Kurbah, K.; Deb, S.; Kanbur, S.M.; Das, S.; Deka, M.; Bhardwaj, A.; Randall, H.R.; Kalici, S.; 2023, MNRAS, 521, 6034. - A multiphase study of theoretical and observed light curves of classical Cepheids in the Magellanic Clouds
Ngeow, C.-C.; Bhardwaj, A.; Graham, M.J.; et al; 2023, AJ, 165, 190 - Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Rela- tions for SX Phoenicis Variables in the gri Band
*Ou, J.-Y.; Ngeow, C.-C.; Bhardwaj, A.; et al; 2023, AJ, 165, 137 - A Distance Measurement to M33 Using Optical Photometry of Mira Variables
Bhardwaj A.; Kanbur, S.M.; Rejkuba M.; et al.; 2022, A&A, 668, 59 - Near-infrared observations of RR Lyrae and Type II Cepheid variables in the metal-rich bulge globular cluster NGC 6441
Bhardwaj A. 2022, Invited Review for a special issue of Universe, 8(2), 122, Invited Review - RR Lyrae and Type II Cepheid Variables in Globular Clusters: Optical and Infrared Properties
Ngeow, C.-C.; Bhardwaj, A.; Graham, M.J.; et al; 2022, AJ, 164, 191 - Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Rela- tions for Anomalous Cepheids Supplemented with Large Magellanic Cloud Sample
Ngeow, C.-C.; Bhardwaj, A.; Reiley, D.; et al; 2022, AJ, 164, 166 - Zwicky Transient Facility and Globular Clusters: Calibration of the gr-band Absolute Magnitudes for the Yellow Post-asymptotic-giant-branch Stars
Ngeow, C.-C.; Bhardwaj, A.; Henderson, J.-Y.; et al; 2022, AJ, 164, 154. - Zwicky Transient Facility and Globular Clusters: The Period-Luminosity and Period-Wesenheit Rela- tions for Type II Cepheids
Ngeow, C.-C.; Bhardwaj, A.; Dekany, R.; et al; 2022, AJ, 163, 239 - Zwicky Transient Facility and Globular Clusters: The RR Lyrae gri-band Period-Luminosity-Metallicity and Period-Wesenheit-Metallicity Relations
*Deka, M. et al.; (including Bhardwaj A.); 2022, MNRAS, 517, 2251 - Period-colour and amplitude-colour relations for OGLE δ Scuti stars in the Galactic bulge and LMC
Molnar, L.; Bodi, A.; Pal, A.; Bhardwaj A. et al.; 2021, ApJs, 258, 8 - First results on RR Lyrae stars with the TESS space telescope: untangling the connections between mode content, colors and distances
Bhardwaj, A.; Rejkuba, M.; Sloan, G. C.; Marconi, M.; Yang, S.-C., 2021, ApJ, arXiv:2107.10751 - Optical and near-infrared pulsation properties of RR Lyrae and Population II Cepheid variables in the Messier 15 globular cluster
Park, Wooseok et al. (including Bhardwaj, A.) ; 2021, ApJ, arXiv:2107.10751 - Quantifying Variability of YSOs in the Mid-IR Over Six Years with NEOWISE
Bhardwaj A.; Rejkuba M.; de Grijs R. et al., 2021, ApJ, 909 (2), 200 - RR Lyrae Variables in Messier 53: Near-infrared Period-Luminosity Relations and the Calibration Using Gaia Early Data Release 32.
Plachy, E. et al. (including Bhardwaj A.), 2021, ApJS, 253 (1), 11 - TESS Observations of Cepheid Stars: First Light Results
*Duan, X.-W.; et al. (including Bhardwaj A.), 2021, ApJ, 909 (1), 25 - Possible Evidence of Hydrogen Emission in the First-overtone and Multimode RR Lyrae Variables
*Das, S.; Kanbur, S. M.; Smolec, R.; Bhardwaj A. et al., 2021, MNRAS, 501 (1), 875 - A theoretical framework for BL Her stars - I. Effect of metallicity and convection parameters on period-luminosity and period-radius relations
Bhardwaj A.; Rejkuba M.; de Grijs R.; Herczeg, G. J. et al., 2020, ApJ, 160 (5), 220 - Near-infrared Census of RR Lyrae Variables in the Messier 3 globular cluster and the Period-LuminosityRelations
Bhardwaj, A.; 2020, Journal of Astrophysics and Astronomy,Invited Review, 41 (1), 23 - High-precision distance measurements with classical pulsating stars
*Das, S.; Kanbur, S. M.; Bellinger, E. P.; Bhardwaj A. et al., 2020, MNRAS, 493, 29 - The stellar photosphere-hydrogen ionization front interaction in classical pulsators: a theoretical explanation for observed period-colour relations
Bhardwaj, A.; Kanbur, S.; He, S.; Rejkuba, M.; Matsunaga, N. et al. 2019, ApJ, 884, 20 - Multiwavelength Period-Luminosity and Period-Luminosity-Color relations at maximum-light for Miravariables in the Magellanic Clouds
Bhardwaj, A.; Panwar, N.; Herczeg, G.; et al. 2019, A&A, 627, 135 - Variability of young stellar objects in the star-forming region Pelican Nebula
Bellinger, E. P.; Kanbur, S. M.; Bhardwaj A.; Marconi, M., 2019, MNRAS, 491, 4752 - When a Period Is Not a Full Stop: Light Curve Structure Reveals Fundamental Parameters of Cepheid and RR Lyrae Stars
Herczeg, G. J. (including Bhardwaj A.) et al., 2019, ApJ, 878, 111 - An initial overview of the extent and structure of recent star formation within the Serpens Molecular Cloud using Gaia Data Release 2
Kains, N.; Calamida, A.; Rejkuba, M.; Bhardwaj A. et al. 2019, MNRAS, 482, 3058 - New variable stars in the Galactic Bulge: I. The bright regime
***Das, S.; Bhardwaj A.; Kanbur, S. M.; Singh, H. P. et al., 2018, MNRAS, 481, 2000 - On the variation of light curve parameters of RR Lyrae variables at multiple wavelengths
Braga, V.; Bhardwaj A.; Contreras Ramos, R.; Minniti, D.; Bono, G. et al., 2018, A&A, 619, A51 - Structure and kinematics of Type II Cepheids in the Galactic bulge based on near-infrared VVV data
Ngeow, C.-C.; Kanbur, S. M.; Bhardwaj A.; Singh, H. P., 2017, ApJ, 834, 160 - Period-Color and Amplitude-Color Relations at Maximum and Minimum Light For RR Lyrae in SDSSS tripe 82 Region
Bhardwaj, A.; Rejkuba, M.; Minniti, D.; Valenti, E.; et al.; 2017, A&A, 605, 100 - Galactic bulge population II Cepheids in the VVV Survey: period-luminosity relations and a distanceto the Galactic centre
Bhardwaj, A.; Macri, L. M.; Rejkuba, M.; Kanbur, S. M.; et al., 2017, AJ, 153, 154 - Large Magellanic Cloud Near-Infrared Synoptic Survey. IV. Leavitt Laws for Type II Cepheid Variables
Bhardwaj, A.; Kanbur, S. M.; Marconi, M.; Rejkuba, M.; et al.; 2017, MNRAS, 466, 2805 - A Comparative Study on Multiwavelength Theoretical and Observed Light Curve Parameters of Cepheid Variables
Subramanian, S., Marengo, M., Bhardwaj A. et al.; 2017, Space Science Reviews, 212(3), 1817-1869 - Young and intermediate-age distance indicators
Ngeow, C.-C.; Kanbur, S. M.; Bhardwaj, A.; Singh, H. P.; 2015, ApJ, 808, 67 - Period-luminosity relations derived from the OGLE-III Fundamental-mode Cepheids II: The Small Magellanic Cloud Cepheids
Bhardwaj, A.; Kanbur, S. M.; Macri, L. M.; Singh, H. P., et al.; 2016, MNRAS, 457, 1644 - Large Magellanic Cloud Near-Infrared Synoptic Survey. III. A Statistical Study of Non- Linearity in the Leavitt Laws
Bhardwaj, A.; Kanbur, S. M.; Singh, H. P., et al., 2016, MNRAS, 458, 3705 - Period-Luminosity relations derived from the OGLE-III first-overtone mode Cepheids in the MagellanicClouds
Bhardwaj, A.; Kanbur, S. M.; Macri, L. M.; Singh, H. P.; et al., 2016,AJ, 151, 88B - Large Magellanic Cloud Near-Infrared Synoptic Survey. II. The Wesenheit Relations and Their Application to the Distance Scale
Bhardwaj, A.; Kanbur, S. M.; Singh, H. P.; Macri, L. M.; et al., 2015,MNRAS, 447, 3342 - On the Variation of Fourier Parameters for Galactic and LMC Cepheids at Optical, Near-Infrared and Mid-Infrared Wavelengths
Ngeow, C.-C.; Sarkar, S.; Bhardwaj A.; Kanbur, S. M.; Singh, H. P., 2015, ApJ, 813, 57 - Updated 24-micron Period-Luminosity Relation Derived From Galactic Cepheids
Bhardwaj, A.; Kanbur, S. M.; Singh, H. P.; Ngeow, C.-C.; 2014, MNRAS, 445, 2655 - Empirical period-colour and amplitude-colour relations for Classical Cepheids and RR Lyrae variables
Refereed Conference Papers (9 first-author, total 18)
Bhardwaj A., 2023, proceedings for the invited talk at IAUS376 - At the cross-roads of astrophysics and cosmology: Period-luminosity relations in the 2020s - Period-Luminosity-Metallicity relations for Classical Pulsators at Near-infrared Wavelengths
Molnar, L.; Bodi, A.; Pal, A.; Bhardwaj A. et al., TESS Science Conference, Jul 2021, 10.5281/zen- odo.5122840 - A comprehensive look at RR Lyrae stars through high-precision photometry and astrometry
Bhardwaj, A., 2020, RRL/Cep 2019 conference, New Mexico, USA, arXiv:2006.11855 - Type II Cepheids as stellar tracers and distance indicators
Das, S.; Kanbur, S. M.; Bellinger, E. P.; Bhardwaj, A. et al.; 2020, arXiv:2010.06624 - A study of the stellar photosphere-hydrogen ionisation front interaction in pulsating variables using period-color relations
Duan, X.-W. et al. (including Bhardwaj A.); 2020, Communications of the BAO, 67, 181- Detecting shock waves in non-fundamental mode RR Lyrae using large sample of spectra in SDSS and LAMOST
Singh, H. P.; Das, S.; Bhardwaj, A.; Kanbur, S.; Marconi, M., 2019, BSRSL, 88, 95 - Light Curve Parameters of Cepheid and RR Lyrae Variables at Multiple Wavelengths - Models vs. Observations
Bhardwaj, A.; 2019, ESO Garching, Germany, https://zenodo.org/record/3472532, online proceedings,ESO Workshop: A Synoptic View of the Magellanic Clouds - VMC, Gaia and Beyond
Bhardwaj, A.; Kanbur, S.; Marconi, M.; et al., 2018, IAUS 347, arXiv:1810.07364 - Time-series analyses of Cepheid and RR Lyrae variables in the wide-field variability surveys
Bhardwaj, A.; 2018, ASP Conference Series, 514, 153 - Cepheid and RR Lyrae variables as standard candles and what else?
Bhardwaj, A.; Marconi, M.; Kanbur, S.; et al., 2018, Pucon, Chile, 10.5281/Zenodo.2595305, online proceedings - The Galactic Bulge at the Crossroads (ESO-GBX2018)
Bhardwaj, A.; Kanbur, S.; Singh, H.P. et al.; 2018, IAUS-339, 339, 287 - Multiwavelength light curve analysis of Cepheid variables
Bhardwaj, A.; Macri, L.; Kanbur, S. et al.; 2018, IAUS-339, 339, 283 - Near-infrared observations of OGLE Classical and Type II Cepheids
Ngeow, C.-C.; Bhardwaj, A.; Marci, L.; Kanbur, S.; 2018, ASP Conference Series, 514, 31 - Large Magellanic Cloud Near-Infrared Synoptic Survey (LMCNISS): Overview and Science Highlightsfor Classical and Type-II Cepheids
Kanbur, S.M.; Marconi, M.; Bhardwaj, A.; et al.; 2018, ASP Conference Series, 515, 189 - The Role of Opacity in Stellar Pulsation
Ngeow, C.-C.; Bhardwaj, A.; Kanbur, S.; 2018, IAUS-330, 330, 337 - G-Band Period-Luminosity Relation For Galactic Cepheids Based on Gaia DR1 Measurements
Bhardwaj, A.; Kanbur, S.; Marconi, M.; et al., 2017, EPJ Web Conf, 152, 2017 - Multi-wavelength light curve parameters of Cepheid and RR Lyrae variables
Kanbur, S.; Bhardwaj, A.; et al., 2016 Comm. from the Konkoly Observatory, 105, 57 - Period-color and amplitude-color relations for RR Lyrae stars
Ngeow, C.-C.; Kanbur S., Bhardwaj, A.; et al., 2016, Comm. from the Konkoly Observatory, 105, 211 - RR Lyrae stars in the SDSS Stripe 82 region: period-color and amplitude-color relations
Conference Talks and Seminars [selected]
Invited Talks
IAU Symposium 376, At the cross-roads of astrophysics and cosmology: Period–luminosity relations in the 2020s, Budapest, April 2023 - NIR view on Period-Luminosity-Metallicity relations for classical pulsators
Seminar at ARIES Observatory, Nainital, Aug 2022 - Absolute calibration of the distance scale using classical pulsating stars in the Gaia era
Astromeetings Seminar, INAF-OACN, Italy, May 2022 (remote) - Precision stellar astrophysics and the distance scale with pulsating stars
Osaka University Theoretical Astrophysics Group, OUTAP Colloquium, Japan, Feb 2022 (remote) - Precision stellar astrophysics and the distance scale with pulsating stars
Macquarie University, AAAstro Seminar, Sydney, Australia, Dec 2021 (remote) - Precision stellar astrophysics and the distance scale with pulsating stars
Outreach talk at Dolphin Institute of Biomedical and Natural Sciences, Dehradun, India, Oct 2021 - Variable stars as cosmic distance rulers
IAU General Assembly Pre-meeting - The IAU Today, Aug 2021 (remote - invited by the IAU president) - Precision stellar astrophysics and the distance scale with pulsating stars
Colloquium at Indian Institute of Astrophysics, Bengaluru, India, July 2020 (remote) - Probing stellar evolution and cosmic expansion with pulsating stars
Seminar at Aryabhatta Research Institute of Observational Sciences, India, Aug 2019 - The Extragalactic distance scale in the Gaia era
Seminar at National Astronomical Observatories, Chinese Academy of Sciences, China, Oct 2018 - Stellar variability and the distance scale in the Gaia era
Extragalactic Distance Scale in the Gaia Era, MIAPP, Germany, June 2018 - Population II Cepheids as stellar tracers and distance indicators?
Astronomical Distance Determination in the Space Age, Beijing, China, May 2016 - Cepheid Variables in the LMC NIR Synoptic Survey
Contributed Talks
LSST@Europe4 meeting, Rome, Italy, Oct 2022 - Zwicky Transient Facility and Globular Clusters: Population II distance indicators in the LSST era
RR Lyrae and Cepheid stars conference, La Palma, Spain, Sep 2022 - RR Lyrae variables in globular clusters: NIR Period-Luminosity-Metallicity relations
Stellar evolution along the HR diagram with Gaia, Naples, Italy, Sep 2022 - Absolute calibration of Type II Cepheid and RR Lyrae distance scales using Gaia DR3
Korean Astronomical Society Meetings, Korea, March 2022 - Absolute calibration of NIR Period-Luminosity-Metallicity relations for RR Lyrae variables
XXXVIII meeting of Astronomical Society of India, Tirupati, India, Feb 2020 - Extragalactic Distance Ladder
Workshop on the Magellanic Clouds, Bengaluru, India, Feb 2020 - The Magellanic Clouds as anchor of the Cosmic Distance Ladder
Ceph/RRL conference 2019, New Mexico, USA, October 2019 - NIR Period-Luminosity relations of Population II Cepheids and RR Lyrae as distance indicators
ESO Workshop: A Synoptic View of the Magellanic Clouds, Garching, Germany, Sep 2019 - Miras at maximum-light in the Magellanic Clouds and beyond
ESO Workshop: The Galactic Bulge at the crossroads (GBX2018), Pucon, Chile, Dec 2018 - Predicting Physical Parameters of Cepheid and RR Lyrae variables
The Life and Times of the Milky Way, Shanghai, China, Nov 2018 - Population II Cepheids as Stellar Tracers of the Milky Way Bulge
Early Science with E-ELTs, IAUS 347, General Assembly, Vienna, Austria, Aug 2018 - Time-series analyses of Cepheid and RR Lyrae variables in the wide-field variability surveys
Southern Horizons in Time-domain Astronomy - IAUS 339, South Africa, Nov 2017 - Near-infrared observations of OGLE Classical and Type II Cepheids (OGLE25 workshop)
Stellar Population and the Distance Scale, Beijing, China, Sep 2017 - Cepheid and RR Lyrae variables as standard candles and what else?
Asia-Pacific Regional IAU Meeting, Taiwan, Jul 2017 - Cepheid Variables: Stellar Pulsation and the Distance Scale
22nd Los Alamos Stellar Pulsation Conference Series, Chile, Nov 2016 - Multi-wavelength light curve parameters of Cepheid and RR Lyrae variables
Cosmic Distance Scale Summer School, Tokyo, Japan, Jun-Jul 2015 - Absolute calibration of Leavitt law and the distance scale
Advances in the Variable Star Astronomy, Texas, USA, Jun 2015 - Non-linearities in the Leavitt law and the distance scale
XXIII Meeting of Astronomical Society of India, NCRA-Pune, India, Feb 2015 - Fourier Parameters for Galactic and LMC Cepheids at multiple Wavelengths
Indo-US meeting on Analysis of Variable star data, University of Delhi, India, in Jan 2015 - Cepheid variables: Light curve structure and their applications
Scholarly Book Chapters
Subramanian, S., Marengo, M., Bhardwaj, A., Huang, Y., Inno, L, Nakagawa, A., Storm, J. Chapter in the book - Astronomical Distance Determination in the Space Age, Space Sciences Series of ISSI, Vol 66, 429, Publisher: Springer
Selected Poster Presentations
IAU GA meeting, Busan, Korea, Aug 2022 - Predicting Physical Parameters of Cepheid and RR Lyrae variables in an Instant with Machine Learning
Korean Astronomical Society meeting, Jeju Island, Oct 2021 - Pushing precision and accuracy of RR Lyrae variables as distance indicators
Current Trends in Near-Infrared Astronomy in India, Hyderabad, India, Nov 2014 - Fourier decomposition of Cepheid light curves at multiple wavelengths
Cosmic Distance Scale workshop, STScI, Baltimore, USA, Mar 2014 - Application of Galactic & LMC Cepheid JHKs P-L relations