Results 21 to 30 of about 354,490 (317)

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

Variability survey of brightest stars in selected OB associations

, 2016
The stellar evolution theory of massive stars remains uncalibrated with high-precision photometric observational data mainly due to a small number of luminous stars that are monitored from space.
Eenmäe, Tõnis, Kolka, Indrek, Laur, Jaan, Leedjärv, Laurits, Tuvikene, Taavi   +4 more
core   +1 more source

DIVISION V: VARIABLE STARS [PDF]

Proceedings of the International Astronomical Union, 2008
Division V deals with all aspects of stellar variability, either intrinsic or due to eclipses by its companion in a binary system. In the case of intrinsic stellar variability the analysis of pulsating stars, surface inhomogeneities, stellar activity and oscillations are considered.
Giménez, Alvaro, Steven D., Kawaler, Aerts, Conny, Christensen-Dalsgaard, Jørgen, Breger, Michael, Guinan, Edward F., Kurtz, Donald W., Rucinski, Slavek M.   +7 more
openaire   +2 more sources

Four New Delta Scuti Pulsators from a Variability Survey of 131 Stars

, 2002
In a photometric variability survey of 131 stars with B < 14 mag, we have found four new Delta Scuti stars. We were sensitive to oscillation amplitudes as low as a few mmag.
Alexei V. Filippenko, Eyer L., Groot P., Hog E., J. L. Sokoloski, Kholopov P. N., Lars Bildsten, Lopez de Coca P., Munari U., Petersen J. O., Pojmanski G., R. Chornock, Sokoloski J. L., Udalski A., Udalski A., Udalski A., Viskum M., Viskum M.   +17 more
core   +2 more sources

Variable stars in the VVV globular clusters [PDF]

, 2017
Indexación: Scopus.The VVV survey observed some of the most crowded and most obscured regions in the inner Milky Way during the last years. A significant sample of the less known globular clusters in our galaxy lie there.
Alonso-García, J., Catelan, M., Dékány, I., Minniti, D., Ramos, R.C.   +4 more
core   +2 more sources

Observational Properties of 155 O- and B-type Massive Pulsating Stars

The Astrophysical Journal Supplement Series, 2023
O- and B-type (OB-type) pulsating stars are important objects for studying the structure and evolution of massive stars through asteroseismology. A large amount of data from various sky surveys provides an unprecedented opportunity to search for and ...
Xiang-dong Shi, Sheng-bang Qian, Li-ying Zhu, Liang Liu, Lin-jia Li, Lei Zang   +5 more
doaj   +1 more source

Pulsating B-type stars in the young open cluster h Persei (NGC 869)

, 2007
We announce the discovery of six Beta Cephei stars and many other variable stars in the young open cluster h Persei (NGC 869). The cluster seems to be very rich in variable B-type stars, similarly to its twin, Chi Persei (NGC 884).Comment: 5 pages, 5 ...
Aleksandra Majewska-Świerzbinowicz, Andrzej Pigulski, Gomez-Forrellad J M, Keller S C, Krzesiński J, Oosterhoff P T, Róbert Szabó, Saesen S, Zoltán Csubry   +8 more
core   +1 more source

Searching for variable stars in Galactic Open Clusters [PDF]

, 2009
A long-term project, aiming at systematic search for variable stars in Galactic Open Clusters, was started at the Geneva Observatory in 2002. We have been observing regularly a sample of twenty-seven Galactic Open Clusters in the U, B, V Geneva filters ...
Claudia Greco, Gilbert Burki, Joyce Ann Guzik, Laurent Eyer, Maxime Spano, Mihaly Varadi, Nami Mowlavi, Paul A. Bradley   +7 more
core   +2 more sources

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source

A Catalog of New Slowly Pulsating B-type Stars

The Astrophysical Journal Supplement Series, 2023
This paper reports the discovery of new slowly pulsating B-type stars. Based on the photometric, spectral, and astrometric data of the TESS, LAMOST, and Gaia surveys, we have found 286 new slowly pulsating B-type (SPB) stars and 21 candidates.
Xiang-dong Shi, Sheng-bang Qian, Li-ying Zhu, Lin-jia Li   +3 more
doaj   +1 more source