Abstract Classical Cepheid and RR Lyrae variables are radially pulsating stars that trace
young and old-age stellar populations, respectively. These classical pulsating stars are the …

Childhood attention-deficit/hyperactivity disorder (ADHD) has been associated with reduced
health and well-being of patients and their families. The authors undertook a large UK …

Globular clusters are both primary fossils of galactic evolution and formation and are ideal
laboratories for constraining the evolution of low-mass and metal-poor stars. RR Lyrae and …

Morality (from the Latin word moralitas that means “manner, character, proper behavior”) is
the differentiation of intentions, decisions, and actions between those that are good (or right) …

Variability in young stellar objects (YSOs) can be caused by various time-dependent
phenomena associated with star formation, including accretion rates, geometric changes in …

The dense clusters within the Serpens Molecular Cloud are among the most active regions
of nearby star formation. In this paper, we use Gaia DR2 parallaxes and proper motions to …

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 …

Abstract The Transiting Exoplanet Survey Satellite (TESS) space telescope is collecting
continuous, high-precision optical photometry of stars throughout the sky, including …

We present the first analysis of Cepheid stars observed by the TESS space mission in
Sectors 1–5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone …

We present new near-infrared, JHK s, period–luminosity relations (PLRs) for RR Lyrae
variables in the Messier 53 (M53 or NGC 5024) globular cluster. Multi-epoch JHK s …