Results 31 to 40 of about 207,560 (312)

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

Open clusters: III. Fundamental parameters of B stars in NGC 6087, NGC 6250, NGC 6383 and NGC 6530. B type stars with circumstellar envelopes [PDF]

, 2017
Context. Stellar physical properties of star clusters are poorly known. Aims. Our goals are to perform a spectrophotometric study of the B star population in open clusters to derive accurate stellar parameters, search for the presence of circumstellar ...
Y. Aidelman, Y. Aidelman, L. Cidale, L. Cidale, J. Zorec, J. Zorec, J. A. Panei, J. A. Panei   +7 more
semanticscholar   +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

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, P. Massey   +7 more
semanticscholar   +1 more source

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

On the anomaly of Balmer line profiles of A-type stars. Fundamental binary systems [PDF]

, 2002
In previous work, Gardiner et al. (1999) found evidence for a discrepancy between the Teff obtained from Balmer lines with that from photometry and fundamental values for A-type stars.
Alonso, Andersen, B. Smalley, Barlow, Berthet, Blackwell, Blackwell, Burnashev, Canuto, Canuto, Carnochan, Castelli, Castelli, Ciardi, Crawford, Crawford, Epchtein, F. Kupka, Flower, Gardiner, Glushneva, Hanbury Brown, Hayes, Heiter, Johnson, Jordi, Latham, M. S. Bessell, Mountain, Nordström, Petford, Popper, Popper, R. B. Gardiner, Ribas, Ribas, Smalley, Smalley, Smalley, Torres, van Belle, van't Veer-Menneret, Vidal   +42 more
core   +2 more sources

Fundamental Parameters of CP Stars [PDF]

Highlights of Astronomy, 1998
The quest for accurate fundamental parameters (M, R, Teff log g, v sin i) of CP stars has been a lasting problem ever since the nature and origin of these stars has been discussed. The main reason for the difficulty lies in the anomalous colours of these stars, linked with their abundance anomalies which are responsible for complicated blocking and ...
openaire   +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

Spectroscopic determination of the fundamental parameters of 66 B-type stars in the field-of-view of the CoRoT satellite [PDF]

, 2009
Aims. We determine the fundamental parameters of a sample of B stars with apparent visual magnitudes brighter than 8 in the fieldof-view of the CoRoT space mission, from high-resolution spectroscopy. Methods.
K. Lefever, J. Puls, T. Morel, C. Aerts, L. Decin, M. Briquet   +5 more
semanticscholar   +1 more source