Results 31 to 40 of about 173,796,379 (301)

The Homogeneous Study of Transiting Systems (HoSTS) – II. The influence of the line list on stellar parameters [PDF]

, 2017
The use of high-resolution, high signal-to-noise stellar spectra is essential in order to determine the most accurate and precise stellar atmospheric parameters via spectroscopy.
Smalley
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The fundamental parameters of the roAp star HD 24712 [PDF]

Astronomy & Astrophysics, 2016
Context. There is still a debate about the nature of the mechanism that causes the pulsation excitation of the rapidly oscillating Ap stars that oscillate above the highest theoretically acoustic frequency. HD 24712 is a good test case for such a study because it is bright, its parallax accurately determined, and its frequency spectrum is well known ...
Perraut, K., Brandão, I., Cunha, M., Shulyak, D., Mourard, D., Nardetto, N., ten Brummelaar, T.   +6 more
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Eclipsing binary stars with a delta Scuti component [PDF]

, 2017
Eclipsing binaries with a d Sct component are powerful tools to derive the fundamental parameters and probe the internal structure of stars. In this study, spectral analysis of six primary d Sct components in eclipsing binaries has been performed. Values
Smalley
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Fundamental parameters of the Ap-stars GO And, 84 UMa, and κ Psc [PDF]

Astronomy & Astrophysics, 2021
Aims. The aim of this work is to determine fundamental parameters of three Ap stars, GO And (HD 4778), κ Psc (HD 220825), and 84 UMa (HD 120198), using spectroscopic techniques. By analysing these stars, we complete the sample of Ap stars for which fundamental parameters have additionally been derived by means of interferometry.
A. M. Romanovskaya, D. V. Shulyak, T. A. Ryabchikova, T. M. Sitnova   +3 more
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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  

A spectroscopic survey of Herbig Ae/Be stars with X-shooter - I. Stellar parameters and accretion rates [PDF]

, 2015
JRF gratefully acknowledges a studentship from the Science and Technology Facilities Council of the UK. JDI gratefully acknowledges funding from the European Union FP7-2011 under grant agreement no.
van den Ancker, M. E., Fairlamb, JR, Oudmaijer, R. D., Van den Ancker, ME, Ilee, JD, Mendigutía, I., Ilee, John David, Fairlamb, J. R., Oudmaijer, RD, Mendigutia, I   +9 more
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The Pan-Pacific Planet Search - V. Fundamental parameters for 164 evolved stars

, 2016
We present spectroscopic stellar parameters for the complete target list of 164 evolved stars from the Pan-Pacific Planet Search, a five-year radial velocity campaign using the 3.9 m Anglo-Australian Telescope.
Tinney, C. G., Johnson, John Asher, Casagrande, Luca, Wang, Liang, Liu, Fan, Wittenmyer, Robert A., Wittenmyer, R., Johnson, J., Casagrande, L, Johnson, JA, Wang, L., Casagrande, L., Wang, L, Wittenmyer, RA ; https://orcid.org/, Liu, F, Tinney, C., Tinney, CG ; https://orcid.org/, Liu, F.   +17 more
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FUNDAMENTAL PARAMETERS OF SUPERGIANT STAR HD 40589 (A0Iab)

Odessa Astronomical Publications, 2023
The atmosphere of HD 40589 (A0Iab) supergiant star of A spectral class was studied using the model atmosphere and parallax methods. The effective temperatures (Teff) and surface of gravity (log g) were determined using a comparison of the observed and  calculated values of the photometric quantities [c1], Q and the equivalent widths of the hydrogen ...
Z. A. Samedov, U. R. Rustem, G. M. Hajiyeva, Z. F. Aliyeva   +3 more
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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.
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Simultaneous seismic modelling of multiple stars using correlated parameters

, 2021
The asteroseimsology of individual solar-like oscillators generally allows more precise inferences about many stellar model parameters than with only non-seismic constraints. Some of these parameters (e.g.
Ball, Warrick H.
core   +1 more source