Results 51 to 60 of about 221,937 (281)

Spectroscopic and physical parameters of Galactic O-type stars. II. Observational constraints on projected rotational and extra broadening velocities as a function of fundamental parameters and stellar evolution [PDF]

, 2013
Rotation is of key importance for the evolution of hot massive stars, however, the rotational velocities of these stars are difficult to determine. Based on our own data for 31 Galactic O stars and incorporating similar data for 86 OB supergiants from ...
N. Markova, J. Puls, S. Simón-Díaz, S. Simón-Díaz, A. Herrero, A. Herrero, H. Markov, N. Langer   +7 more
semanticscholar   +1 more source

Fundamental Parameters of the Underlying Be Stars (Review Paper) [PDF]

International Astronomical Union Colloquium, 1987
AbstractThe various methods for determining masses, radii, luminosities, effective temperatures, spectral types, and rotational velocities of the underlying Be stars are reviewed, and representative values listed for each.
openaire   +1 more source

Fundamental parameters of 16 late-type stars derived from their angular diameter measured with VLTI/AMBER ? [PDF]

, 2013
Thanks to their large angular dimension and brightness, red giants and supergiants are privileged targets for optical long-baseline interferometers. 16 red giants and supergiants have been observed with the VLTI/AMBER facility over a 2-year period, at ...
P. Cruzalèbes, A. Jorissen, Y. Rabbia, S. Sacuto, A. Chiavassa, A. Chiavassa, E. Pasquato, B. Plez, K. Eriksson, A. Spang, O. Chesneau   +10 more
semanticscholar   +1 more source

Blazhko effect in the Galactic bulge fundamental mode RR Lyrae stars – II. Modulation shapes, amplitudes, and periods [PDF]

Monthly notices of the Royal Astronomical Society, 2020
The number of stars observed by the Optical Gravitational Lensing Experiment (OGLE) project in the Galactic bulge offers an invaluable chance to study RR Lyrae stars in a statistical manner.
M. Skarka, Z. Prudil, J. Jurcsik
semanticscholar   +1 more source

Fundamental Parameters of 10 Ap-Stars [PDF]

, 2023
Представлен результат самосогласованного анализа спектров высокого разрешения для 10 Aр-звезд в диапазоне эффективных температур 7 000—11 000 К. Получены фундаментальные параметры звезд, определен химический состав их атмосфер и оценена стратификация ...
Романовская, А. М., Romanovskaya, A. M.   +1 more
core  

Fundamental Parameters : Normal A0 Dwarf Stars of the Solar Neighbourhood [PDF]

Highlights of Astronomy, 1998
The purpose of this paper is to define a set of “standard”, “reference” or “comparison” stars, according to their use, of spectral type A0V in order to be used for further studies in the domain of peculiar stars as well as normal stars of thisTeffand luminosity range.
M. Gerbaldi, R. Faraggiana, R. Burnage, F. Delmas, A. Gomez, S. Grenier   +5 more
openaire   +1 more source

Time Toxicity in Wilms Tumor: Quantifying the Burden of Healthcare Interaction in the First Year After Diagnosis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Wilms tumor (WT) treatment imposes a significant time burden on patients and their families. Time toxicity is a patient‐centered metric that quantifies the burden of healthcare interaction. We sought to define time toxicity in the first year after diagnosis of WT and hypothesized that it would increase as tumor stage and treatment ...
Caleb Q. Ashbrook, Veerain Gupta, Nicholas J. Clark, Vijay Rings, Lauren E. Corona, Douglass B. Clayton, Daniel J. Benedetti   +6 more
wiley   +1 more source

Fundamental M-dwarf parameters from high-resolution spectra using PHOENIX ACES models: I. Parameter accuracy and benchmark stars [PDF]

, 2016
M-dwarf stars are the most numerous stars in the Universe; they span a wide range in mass and are in the focus of ongoing and planned exoplanet surveys.
V. Passegger, S. W. Berg, A. Reiners
semanticscholar   +1 more source

Heterogeneity in the Global Practice of Central Nervous System Staging in Pediatric Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Central nervous system (CNS) involvement in childhood acute lymphoblastic leukemia (ALL) is assessed by cell counting and cytomorphology from cerebrospinal fluid (CSF) and is used for treatment stratification worldwide. The ratio of “CNS2” patients in clinical trials ranges from 3% to 40%, with unclear prognostic significance ...
Laura Almási, Bernadett Borbála Huszti, Gábor Barna, Marko Kavcic, Janez Jazbec, Lennart Lenk, Vera Münch, Sophia Polychronopoulou, Ágnes Márk, Maria Thastrup, Lüder H. Meyer, Kjeld Schmiegelow, Cornelia Eckert, Christina Halsey, Dániel J. Erdélyi   +14 more
wiley   +1 more source

The radius and other fundamental parameters of the F9 V star β Virginis [PDF]

Monthly Notices of the Royal Astronomical Society, 2009
We have used the Sydney University Stellar Interferometer (SUSI) to measure the angular diameter of the F9 V star beta Virginis. After correcting for limb darkening and combining with the revised Hipparcos parallax, we derive a radius of 1.703 +/- 0.022 R_sun (1.3%).
North, J. R., Davis, C. J., Robertson, J. G., Bedding, Timothy R., Bruntt, H., Ireland, Michael J., Jacob, A. P., Lacour, Sylvestre, O'Byrne, J. W., Owens, S. M., Stello, Dennis, Tango, W. J., Tuthill, Peter G.   +12 more
openaire   +3 more sources