Results 71 to 80 of about 22,483 (180)

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of Variable Stars. XIV. Classical and Type II Cepheids in the Galactic Bulge [PDF]

, 2011
I. Soszyński, A. Udalski, P. Pietrukowicz, M. K. Szymański, M. Kubiak, G. Pietrzyński, Ł. Wyrzykowski, K. Ulaczyk, R. Poleski, S. Kozłowski   +9 more
openalex   +2 more sources

OGLE-IV Period–Luminosity Relation of the LMC: An Analysis Using Mean and Median Magnitudes

The Astronomical Journal
The Period–Luminosity (PL) relation for Cepheid variable stars in the LMC is crucial for distance measurements in astronomy. This study analyzes the impact of using the median rather than the mean of the PL relation’s slope and zero-point.
Jaime Muñoz, Alejandro García-Varela, Santiago Henao-Castellanos, Beatriz Sabogal, Luis Felipe Giraldo, Jorge Martínez   +5 more
doaj   +1 more source

Converging on the Cepheid Metallicity Dependence: Implications of Nonstandard Gaia Parallax Recalibration on Distance Measures

The Astrophysical Journal
By comparing Cepheid brightnesses with geometric distance measures including Gaia EDR3 parallaxes, most recent analyses conclude metal-rich Cepheids are brighter, quantified as γ ∼ −0.2 mag dex ^−1 .
Louise Breuval, Gagandeep S. Anand, Richard I. Anderson, Rachael Beaton, Anupam Bhardwaj, Stefano Casertano, Gisella Clementini, Mauricio Cruz Reyes, Giulia De Somma, Martin A. T. Groenewegen, Caroline D. Huang, Pierre Kervella, Saniya Khan, Lucas M. Macri, Marcella Marconi, Javier H. Minniti, Adam G. Riess, Vincenzo Ripepi, Martino Romaniello, Daniel Scolnic, Erasmo Trentin, Piotr Wielgórski, Wenlong Yuan   +22 more
doaj   +1 more source

The Optical Gravitational Lensing Experiment. The OGLE-III Catalog of\n Variable Stars. VIII. Type II Cepheids in the Small Magellanic Cloud [PDF]

, 2010
I. Soszyński, A. Udalski, M. K. Szymański, M. Kubiak, G. Pietrzyński, Ł. Wyrzykowski, K. Ulaczyk, R. Poleski   +7 more
openalex   +3 more sources

The Cepheid Distance Scale: A Novel Method for Obtaining Mean Magnitudes from Single-epoch Observations

The Astronomical Journal
We present a novel technique for mapping single-phase observations of Cepheids in any given band into their time-averaged values, using strong priors on the known interrelations of the multiwavelength widths of Cepheid period–luminosity (PL) relations ...
Barry F. Madore, Wendy L. Freedman, Kayla Owens   +2 more
doaj   +1 more source

Variable Stars in Leo A: RR Lyrae Stars, Short-Period Cepheids, and Implications for Stellar Content [PDF]

, 2002
Andrew E. Dolphin, Abhijit Saha, J. Claver, Evan D. Skillman, Andrew A. Cole, J. S. Gallagher, Eline Tolstoy, R. C. Dohm‐Palmer, Mario Mateo   +8 more
openalex   +1 more source

The OGLE Collection of Variable Stars. Classical Cepheids in the\n Magellanic System [PDF]

, 2016
I. Soszyński, A. Udalski, M. K. Szymański, D. M. Skowron, G. Pietrzyński, R. Poleski, P. Pietrukowicz, J. Skowron, P. Mróz, S. Kozłowski, Ł. Wyrzykowski, K. Ulaczyk, M. Pawlak   +12 more
openalex   +2 more sources

Analysis of pulsating variable stars using the visibility graph algorithm. [PDF]

PLoS One, 2021
Muñoz V, Garcés NE.
europepmc   +1 more source

Variable stars in nearby galaxies. II. Population I and II Cepheids in Field A of IC 1613 [PDF]

, 1999
E. Antonello, L. Mantegazza, D. Fugazza, M. Bossi   +3 more
openalex   +1 more source

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