Results 111 to 120 of about 577 (218)

Gaia DR3 Open Cluster Cepheids: A Unified Catalog with Calibrated Period–Age and Period–Wesenheit Relations

The Astronomical Journal
Classical Cepheids (CCs) in Galactic open clusters (OCs) provide essential observational constraints for calibrating the period–age relation (PAR) and the period–Wesenheit relation (PWR) of CCs. However, distant and long-period OC Cepheids remain limited,
Shunhong Deng, Zhihong He, Anbing Ren, Qian Cui, Xiaoyue Zhou, Liming Peng, Chenxin Wang, Ziang Chen, Yangping Luo, Kun Wang   +9 more
doaj   +1 more source

Toward a Comprehensive Grid of Cepheid Models with MESA. III. Evolutionary and Pulsation Relations for Models with Core and Envelope Overshooting

The Astrophysical Journal Supplement Series
Evolutionary tracks for 2–8 M _⊙ models, covering a [Fe/H] = −1.0 ( Z = 0.0014) to [Fe/H] = +0.2 ( Z = 0.02) metallicity range, are computed with Modules for Experiments in Stellar Astrophysics, MESA , to investigate evolutionary and pulsation properties
Radoslaw Smolec, Oliwia Ziółkowska, Rajeev Singh Rathour, Vincent Hocdé, Piotr Wielgórski   +4 more
doaj   +1 more source

Publication Only

HemaSphere, Volume 10, Issue S1, June 2026.
wiley   +1 more source

Variable stars toward the bulge of M 31: the AGAPE catalogue [PDF]

, 2004
journal articleWe present the AGAPE astrometric and photometric catalogue of 1579 variable stars in a 14\u27 × 10\u27 field centred on M 31. This work is the first survey devoted to variable stars in the bulge of M 31. The R magnitudes of the objects and
Gondolo, Paolo, Ansari, R.; Auriere, M.; Baillon, P.; Bouquet, A.; Coupinot, G.; Coutures, Ch.; Ghesquiere, C.; Giraud-Heraud, Y.; Gillieron, D.; Hecquet, J.; Kaplan, J.; Kim, A.; Le Du, Y.; Melchior, A. L.; Moniez, M.; Picat, J. P.; Soucail, G.   +1 more
core  

Is Crater II Disrupting?

The Astronomical Journal
Crater II (CraII) is a very intriguing low surface brightness and extended galaxy in the vicinity of our Galaxy. Motivated by its huge area and the number of RR Lyrae stars (RRLSs) detected near to its core, we performed a follow-up campaign to get deep ...
A. Katherina Vivas, Alistair R. Walker, Clara E. Martínez-Vázquez, MJ Cooke, Carme Gallart, Matteo Monelli, Jaime A. Rojas Cancino, David L. Nidever   +7 more
doaj   +1 more source

The Role of Next-Generation Sequencing (NGS) in the Management of Tuberculosis: Practical Review for Implementation in Routine. [PDF]

Pathogens, 2023
Beviere M, Reissier S, Penven M, Dejoies L, Guerin F, Cattoir V, Piau C.   +6 more
europepmc   +1 more source

Discovery of an Extremely Luminous Type II Cepheid in the Andromeda Giant Stellar Stream: Evidence for a Hierarchical Triple with an Inner Binary Merger

The Astrophysical Journal Letters
We report the discovery of LAMOST J0041+3948, the most luminous post-asymptotic giant-branch (AGB) Type II Cepheid known, located in the Andromeda Giant Stellar Stream.
Pinjian Chen, Bingqiu Chen, Xiaodian Chen, Haibo Yuan, Jianrong Shi, Shu Wang, Chunqian Li, Jiyu Wang, Jianxing Zhang, Yi Ren   +9 more
doaj   +1 more source

Information Dark Energy Can Resolve the Hubble Tension and Is Falsifiable by Experiment. [PDF]

Entropy (Basel), 2022
Gough MP.
europepmc   +1 more source

The dynamics of variable stars

, 1967
Harmonics, pulsation amplitude, and vibratory motion of Cepheid variable ...
Christy, R. F.
core  

A Detailed Analysis of the Milky Way Warp Based on Classical Cepheids

The Astrophysical Journal
Classical Cepheids (CCs) are important probes for the large-scale warp structure of the Milky Way. Using Gaia Data Release 3 CCs, we establish an optimal time-dependent warp model, where the warp height increases with radius following a power law, the ...
Xiaoyue Zhou, Xiaodian Chen, Licai Deng, Shu Wang, Jiyu Wang, Jianxing Zhang   +5 more
doaj   +1 more source