Results 31 to 40 of about 1,219 (138)

Multisite Observations of δ Scuti Stars 7 Aql and 8 Aql (a New δ Scuti Variable): The Twelfth STEPHI Campaign in 2003 [PDF]

The Astronomical Journal, 2007
We present an analysis of the pulsation behaviour of the Delta Scuti stars 7 Aql (HD 174532) and 8 Aql (HD 174589) -- a new variable star -- observed in the framework of STEPHI XII campaign during 2003 June--July. 183 hours of high precision photometry were acquired by using four-channel photometers at three sites on three continents during 21 days ...
Fox Machado, L., Michel, Eric, Pérez Hernéndez, F., Peña, J. H., Li, Z.-P., Chevreton, Michel, Belmonte, J. A., Alvarez, M., Parrao, L., Dupret, Marc-Antoine, Pau, Sylvain, Fernandez, Andrée, Michel, Patrick, Michel, R., Pani, A.   +14 more
openaire   +4 more sources

The EPOCH Project: I. Periodic variable stars in the EROS-2 LMC database [PDF]

, 2014
The EPOCH (EROS-2 periodic variable star classification using machine learning) project aims to detect periodic variable stars in the EROS-2 light curve database. In this paper, we present the first result of the classification of periodic variable stars
Bailer-Jones, Coryn A. L., Byun, Yong-Ik, Chang, Seo-Won, Kim, Dae-Won, Marquette, Jean-Baptiste, Protopapas, Pavlos, Shin, Min-Su   +6 more
core   +1 more source

The OGLE Collection of Variable Stars. Over 2600 Delta Scuti Stars in the Small Magellanic Cloud

Acta Astronomica, 2023
We present the first-ever collection of delta Scuti stars found over the entire area of the Small Magellanic Cloud (SMC). The sample consists of 2810 variables of which over 2600 objects belong to the SMC while the remaining stars are most likely members of the Milky Way's halo.
Soszyński, I., Udalski, A., Skowron, J., Pietrukowicz, P., Szymański, M.K., Poleski, R., Skowron, D.M., Kozłowski, S., Mróz, P., Iwanek, P., Wrona, M., Ulaczyk, K., Rybicki, K., Gromadzki, M.   +13 more
openaire   +2 more sources

FREQUENCY ANALYSIS OF DELTA SCUTI VARIABLE STARS. II.

Odessa Astronomical Publications, 2017
The Fourier analyses performed for photoelectric observations of two delta Scuti stars V1162 Ori and AV Cet show that these stars are multiperiodic with most significant frequencies identified as radial mode overtones and their linear combinations.
V. P. Bezdenezhnyi
doaj   +1 more source

Are the stars of a new class of variability detected in NGC~3766 fast rotating SPB stars? [PDF]

, 2014
A recent photometric survey in the NGC~3766 cluster led to the detection of stars presenting an unexpected variability. They lie in a region of the Hertzsprung-Russell (HR) diagram where no pulsation are theoretically expected, in between the $\delta ...
Dupret, M. -A., Eggenberger, P., Montalbán, J., Reese, D. R., Salmon, S. J. A. J.   +4 more
core   +2 more sources

Close frequency pairs in Delta Scuti stars [PDF]

, 2002
The majority of the well-studied Delta Scuti stars show frequency pairs in the power spectra with frequency separations less than 0.06 c/d(0.7 microHz) as well as amplitude variability.
Bischof, K. M., Breger, M.
core   +2 more sources

The OGLE Collection of Variable Stars. Over 15 000 Delta Scuti Stars in the Large Magellanic Cloud

Acta Astronomica, 2023
We present the OGLE collection of delta Scuti stars in the Large Magellanic Cloud and in its foreground. Our dataset encompasses a total of 15 256 objects, constituting the largest sample of extragalactic delta Sct stars published so far. In the case of 12 delta Sct pulsators, we detected additional eclipsing or ellipsoidal variations in their light ...
Soszyński, I., Pietrukowicz, P., Udalski, A., Skowron, J., Szymański, M.K., Poleski, R., Skowron, D.M., Kozłowski, S., Mróz, P., Iwanek, P., Wrona, M., Ulaczyk, K., Rybicki, K., Gromadzki, M., Mróz, M.   +14 more
openaire   +2 more sources

Time-Series Ensemble Photometry and the Search for Variable Stars in the Open Cluster M11 [PDF]

, 2005
This work presents the first large-scale photometric variability survey of the intermediate age (~200 Myr) open cluster M11. Thirteen nights of data over two observing seasons were analyzed (using crowded field and ensemble photometry techniques) to ...
Bopp B., Bradstreet D., David H. Bradstreet, Eric L. Sandquist, Hall D., Jonathan R. Hargis, McNamara B., McNamara B., Rodriguez E., Rodriguez E.   +9 more
core   +4 more sources

A delta Scuti distance to the Large Magellanic Cloud

, 2007
We present results from a well studied delta Scuti star discovered in the LMC. The absolute magnitude of the variable was determined from the PL relation for Galactic delta Scuti stars and from the theoretical modeling of the observed B,V,I light curves.
Alibert Y., Caldwell J. A. R., Caputo F., Cousins A. W. J., D. Harold McNamara, Gisella Clementini, Laney C. D., Marcella Marconi, Petersen J. O., Petersen J. O., Poretti E., Poretti E., Rodriguez E., Udalski A., Udalski A.   +14 more
core   +1 more source

Photometry of Variable Stars from Dome A, Antarctica [PDF]

, 2011
Dome A on the Antarctic plateau is likely one of the best observing sites on Earth thanks to the excellent atmospheric conditions present at the site during the long polar winter night.
Alcock, Baglin, Boisnard, Breger, Buchler, Carl R. Pennypacker, Daniel Luong-Van, Donald G. York, Huigen Yang, Ji Yang, John W. V. Storey, Jon S. Lawrence, Kaluzny, Kevin Krisciunas, Lasker, Lifan Wang, Lingzhi Wang, Long-Long Feng, Lucas M. Macri, Michael C. B. Ashley, Monet, Pojmanski, Qiang Liu, Riaz, Samus, Saunders, Smith, Storey, Wright, Xiangqun Cui, Xiangyan Yuan, Xu Zhou, Xuefei Gong, Zhaohui Shang, Zhenxi Zhu, Zhou, Zonghong Zhu, Zou   +37 more
core   +3 more sources