Results 41 to 50 of about 36,168 (295)

A variable star survey of the open cluster M37 [PDF]

, 2001
A CCD photometric study of the dense galactic open cluster M37 is presented and discussed. The majority of the analysed data are time-series measurements obtained through an R_C filter.
B. Csák, Bertelli, Frandsen, G. Fűrész, Gy. M. Szabó, Jefferys III, Jorissen, K. Sziládi, K. Sárneczky, Kałuzny, Kolláth, L. L. Kiss, Lee, Mermilliod, Petersen, Robin, Rodríguez, Rucinski, Rucinski, Schild, Stellingwerf, Upgren, West   +22 more
core   +3 more sources

A Rapidly Evolving High-amplitude δ Scuti Star Crossing the Hertzsprung Gap

The Astrophysical Journal Letters, 2022
In this work, we report the discovery of the rapidly evolving high-amplitude δ Scuti star KIC 6382916 (J19480292+4146558), which is crossing the Hertzsprung gap.
Jia-Shu Niu, Hui-Fang Xue
doaj   +1 more source

Variable stars in the Open Cluster M11 (NGC 6705)

, 2007
V-band time-series CCD photometric observations of the intermediate-age open cluster M11 were performed to search for variable stars. Using these time-series data, we carefully examined light variations of all stars in the observing field.
Breger M., C.‐U. Lee, Frandsen S., Frandsen S., Hoffmeister C., J.‐R. Koo, Kaluzny J., McNamara B. J., Rodriguez E., Rodriguez E., Rucinski S. M., S.‐C. Rey, S.‐L. Kim, Vilhu O., Viskum M., Y. B. Kang, Y. H. Kim, Y.‐B. Jeon   +17 more
core   +1 more source

White-Dwarf Asteroseismology With the Kepler Space Telescope

Frontiers in Astronomy and Space Sciences, 2020
In the course of their evolution, white-dwarf stars go through at least one phase of variability in which the global pulsations they undergo allow astronomers to peer into their interiors, making it possible to shed light on their deep inner structure ...
Alejandro H. Córsico, Alejandro H. Córsico   +1 more
doaj   +1 more source

The Classificiation of Kepler B star Variables

, 2012
The light curves of 252 B-star candidates in the Kepler data base are analyzed in a similar fashion to that done by Balona et al. (2011) to further characterize B star variability, increase the sample of variable B stars for future study, and to identify
Jackiewicz, Jason, McKeever, Jean, McNamara, Bernard J.   +2 more
core   +1 more source

”ASYMPTOTIC PARABOLA” FITS FOR SMOOTHING GENERALLY ASYMMETRIC LIGHT CURVES

Odessa Astronomical Publications, 2016
A computer program is introduced, which allows to determine statistically optimal approximation using the "Asymptotic Parabola" fit, or, in other words, the spline consisting of polynomials of order 1,2,1, or two lines ("asymptotes") connected with a ...
K. D. Andrych, I. L. Andronov, L. L. Chinarova, V. I. Marsakova   +3 more
doaj   +1 more source

RR Lyrae Stars and Anomalous Cepheids as Population Tracers in Local Group Galaxies

Universe, 2022
We discuss the use and importance of pulsating variable stars as population tracers in Local Group galaxies. Among bright variable crossing the classical instability strip, we mostly focus on RR Lyrae stars and Anomalous Cepheids.
Matteo Monelli, Giuliana Fiorentino
doaj   +1 more source

CoRoT's view of newly discovered B-star pulsators: results for 358 candidate B pulsators from the initial run's exoplanet field data [PDF]

, 2009
We search for new variable B-type pulsators in the CoRoT data assembled primarily for planet detection, as part of CoRoT's Additional Programme. We aim to explore the properties of newly discovered B-type pulsators from the uninterrupted CoRoT space ...
A. Baglin, A. Miglio, A. Noels, A. Thoul, Aerts, Asplund, Auvergne, Badnell, Balona, Breger, Buchler, C. Aerts, C. Maceroni, Chapellier, Debosscher, Degroote, Dupret, Dziembowski, Dziembowski, Eyer, F. Baudin, Frescura, Grigahcène, Handler, Handler, Hubert, I. Ribas, J. Cuypers, J. Debosscher, J. Montalbán, Koen, L. Balaguer-Núñez, L. Jorda, Lanza, Lomb, M. Auvergne, M. Briquet, M. Deleuil, M. Ollivier, Miglio, Miglio, Miglio, Montgomery, Moon, O'Donoghue, P. De Cat, P. Degroote, R. Samadi, Saio, Samadi, Savonije, Scargle, Scholz, Schwarzenberg-Czerny, Scuflaire, Scuflaire, Stankov, Strassmeier, Tassoul, Townsend, Vuille, W. W. Weiss, Waelkens, Zdravkov   +63 more
core   +5 more sources

Microlensing of radially pulsating stars [PDF]

, 2020
Here, we study the microlensing of radially pulsating stars. Discerning and characterizing the properties of distant, faint pulsating stars is achievable through high-cadence microlensing observations.
S. Sajadian, R. Ignace
semanticscholar   +1 more source

Observations of red-giant variable stars by Aboriginal Australians

, 2017
Aboriginal Australians carefully observe the properties and positions of stars, including both overt and subtle changes in their brightness, for subsistence and social application. These observations are encoded in oral tradition.
Allen R. H., Anonymous, Aristotle 350 BCE, Bailey J., Bailey J., Bates D., Battiste M., Berndt R. M., Berndt R. M., Bhathal R., Cairns H. C., Clarke P. A., Clarke P. A., Clarke P. A., Clarke P. A., Clunies Ross M., Frew D. J., Hamacher D. W., Hamacher D. W., Hamacher D. W., Hamacher D. W., Hamacher D. W., Hamacher D. W., Hamacher D. W., Hamacher D. W., Harmanec P., Haynes R. D., Herschel J. F. W., Hoffleit D., Howitt A., Isles J., Jetsu L., Johnson D. D., Johnson D. D., Leaman T. M., Maegraith B., McNight D., Meyer H. A. E., Mountford C. P., North G., Parker K. L., Prober S. M., Taplin G., Tindale N. B., Tindale N. B., Tindale N. B., White I. M., Wilk S. R., Wilk S. R.   +48 more
core   +1 more source