Results 41 to 50 of about 206,533 (326)

Benchmarking the fundamental parameters of Ap stars with optical long-baseline interferometric measurements

Astronomy & Astrophysics, 2020
Context. The variety of physical processes at play in chemically peculiar stars makes it difficult to determine their fundamental parameters. In particular, for the magnetic ones, called Ap stars, the strong magnetic fields and the induced spotted ...
K. Perraut, M. Cunha, Anna Romanovskaya, D. Shulyak, T. Ryabchikova, V. Hocdé, N. Nardetto, D. Mourard, A. Meilland, F. Morand, I. Tallon-Bosc, C. Farrington, C. Lanthermann   +12 more
semanticscholar   +1 more source

KIC 9028474: A Long-period Eclipsing Binary on a Highly Eccentric Orbit

The Astronomical Journal, 2023
We present a comprehensive analysis of a very long-period (124.93669 days) eclipsing binary KIC 9028474, which is composed of F9V+G1V components on a highly eccentric ( e = 0.82029) orbit.
Orkun Özdarcan
doaj   +1 more source

Revisiting the Red Giant Branch Hosts KOI-3886 and ι Draconis. Detailed Asteroseismic Modeling and Consolidated Stellar Parameters

The Astronomical Journal, 2023
Asteroseismology is playing an increasingly important role in the characterization of red giant host stars and their planetary systems. Here, we conduct detailed asteroseismic modeling of the evolved red giant branch (RGB) hosts KOI-3886 and ι Draconis ...
Tiago L. Campante, Tanda Li, J. M. Joel Ong, Enrico Corsaro, Margarida S. Cunha, Timothy R. Bedding, Diego Bossini, Sylvain N. Breton, Derek L. Buzasi, William J. Chaplin, Morgan Deal, Rafael A. García, Michelle L. Hill, Marc Hon, Daniel Huber, Chen Jiang, Stephen R. Kane, Cenk Kayhan, James S. Kuszlewicz, Jorge Lillo-Box, Savita Mathur, Mário J. P. F. G. Monteiro, Filipe Pereira, Nuno C. Santos, Aldo Serenelli, Dennis Stello   +25 more
doaj   +1 more source

The fundamental parameters of the roAp star α Circini [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Abstract We have used the Sydney University Stellar Interferometer to measure the angular diameter of α Cir. This is the first detailed interferometric study of a rapidly oscillating A (roAp) star, α Cir being the brightest member of its class.
Bruntt, H., North, J. R., Cunha, M., Brandão, I. M., Elkin, V. G., Kurtz, D. W., Davis, J., Bedding, T. R., Jacob, A. P., Owens, S. M., Robertson, J. G., Tango, W. J., Gameiro, J. F., Ireland, M. J., Tuthill, P. G.   +14 more
openaire   +3 more sources

A Spectroscopic Analysis of a Sample of K2 Planet-host Stars: Stellar Parameters, Metallicities and Planetary Radii

The Astrophysical Journal, 2023
The physical properties of transiting exoplanets are connected with the physical properties of their host stars. We present a homogeneous spectroscopic analysis based on the spectra of FGK-type stars observed with the Hydra spectrograph on the WIYN ...
V. Loaiza-Tacuri, Katia Cunha, Verne V. Smith, Cintia F. Martinez, Luan Ghezzi, Simon C. Schuler, Johanna Teske, Steve B. Howell   +7 more
doaj   +1 more source

Fundamental parameters of the massive eclipsing binary HM1 8 [PDF]

Monthly notices of the Royal Astronomical Society, 2021
We present a comprehensive study of the massive binary system HM1 8, based on multi-epoch high-resolution spectroscopy, V-band photometry, and archival X-ray data.
Cinthya N. Rodr'iguez, G. Ferrero, O. Benvenuto, R. Gamen, N. Morrell, R. Barb'a, J. Arias, Phillip Massey   +7 more
semanticscholar   +1 more source

New insight into the massive eccentric binary HD 165052: self-consistent orbital solution, apsidal motion, and fundamental parameters [PDF]

Monthly notices of the Royal Astronomical Society, 2023
HD 165052 is a short-period massive eccentric binary system that undergoes apsidal motion. As the rate of apsidal motion is directly related to the internal structure constants of the binary components, its study allows to get insight into the internal
S. Rosu, E. Quintero, G. Rauw, P. Eenens
semanticscholar   +1 more source

THE PAN-PACIFIC PLANET SEARCH. V. FUNDAMENTAL PARAMETERS FOR 164 EVOLVED STARS [PDF]

, 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.
Robert A. Wittenmyer, Fan Liu, Liang Wang, Luca Casagrande, John Asher Johnson, C. G. Tinney   +5 more
openalex   +3 more sources

Solar-type Stars Observed by LAMOST and Kepler

, 2020
Obtaining measurements of chromospheric and photometric activity of stars with near-solar fundamental parameters and rotation periods is important for a better understanding of solar-stellar connection.
Bi, Shaolan, Du, Minghao, Li, Tanda, Li, Yaguang, Reinhold, Timo, Shapiro, Alexander I., Sowmya, Krishnamurthy, Xiang, Maosheng, Yu, Jie, Zhang, Jinghua, Zhang, Xianfei   +10 more
core   +1 more source

The Fundamental Parameters of Field Horizontal-Branch Stars

The Astronomical Journal, 1996
R. O. Gray, C. J. Corbally, A. G. Davis Philip   +2 more
openaire   +2 more sources