6 papers
Mapping the Inner Milky Way with Infrared-Derived Distances to AGB Stars
Rajorshi Bhattacharya, Subhajit Kar, Loránt O. Sjouwerman +1
The structure and evolution of the Milky Way (MW) can be traced with distance estimates to the evolved stellar populations in the inner galactic region. However, direct astrometric…
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 Multiband Photometric Study of RR Lyrae Stars in M53 (NGC 5024)
Shantanu A. Gaur, Nitesh Kumar, Anupam Bhardwaj +1
We present a multiband (UBVRI) time-series photometric study of RR Lyrae (RRL) stars in the globular cluster Messier 53 (NGC 5024) to refine their pulsation properties and determin…
Converging on the Cepheid Metallicity Dependence: Implications of Non-Standard Gaia Parallax Recalibration on Distance Measures
Louise Breuval, Gagandeep S. Anand, Richard I. Anderson +20
By comparing Cepheid brightnesses with geometric distance measures including Gaia EDR3 parallaxes, most recent analyses conclude metal-rich Cepheids are brighter, quantified as $γ…
The Local Distance Network: a community consensus report on the measurement of the Hubble constant at 1% precision
H0DN Collaboration, Stefano Casertano, Gagandeep Anand +35
The direct, empirical determination of the local value of the Hubble constant (H0) has markedly advanced thanks to improved instrumentation, measurement techniques, and distance es…
Absolute Calibration of Cluster Mira Variables to Provide a New Anchor for the Hubble Constant Determination
Anupam Bhardwaj, Noriyuki Matsunaga, Caroline D. Huang +2
Mira variables in globular clusters can provide an accurate and precise absolute calibration of their period-luminosity relations (PLRs) to independently anchor the cosmic distance…