English
Related papers

Related papers: The prototype star $\gamma$ Doradus observed by TE…

200 papers

The prototype star for the {\gamma} Doradus class of pulsating variables was studied em- ploying photometric and spectroscopic observations to determine the frequencies and modes of pulsation. The four frequencies found were self-consistent…

Solar and Stellar Astrophysics · Physics 2018-03-20 E. Brunsden , K. R. Pollard , D. J. Wright , P. De Cat , P. L. Cottrell

In this paper we describe a new class of pulsating stars, the prototype of which is the bright, early, F-type dwarf, Gamma Doradus. These stars typically have between 1 and 5 periods ranging from 0.4 to 3 days with photometric amplitudes up…

Astrophysics · Physics 2009-10-31 A. B. Kaye , G. Handler , K. Krisciunas , E. Poretti , F. M. Zerbi

The gamma Doradus stars are a recent class of variable main sequence F-type stars located on the red edge of the Cepheid instability strip. They pulsate in gravity modes, and this makes them particularly interesting for detailed…

Astrophysics · Physics 2009-11-13 H. Bruntt , P. De Cat , C. Aerts

Gamma Doradus are F-type stars pulsating with high order g-modes. Their instability strip (IS) overlaps the red edge of the delta Scuti one. This observation has led to search for objects in this region of the HR diagram showing p and…

Solar and Stellar Astrophysics · Physics 2015-05-14 M. -P. Bouabid , J. Montalban , A. Miglio , M. -A. Dupret , A. Grigahcene , A. Noels

We present high-precision TESS photometry of V421 Peg (TIC 301747091), an early F-type eclipsing binary containing a candidate $\gamma$ Dor component. The observed short-cadence data allow the detection of pulsation signals, along with…

Solar and Stellar Astrophysics · Physics 2025-10-02 Jae Woo Lee

$\gamma$ Doradus stars are photometrically variable early F-type stars on or just above the main sequence in the Hertzsprung-Russell Diagram. They vary by as much as 0.1 mag on time scales an order of magnitude slower than the fundamental…

Astrophysics · Physics 2015-06-24 Kevin Krisciunas , Richard A. Crowe , Kenneth D. Luedeke , Mavourneen Roberts

Context. Gamma Doradus (hereafter $\gamma$~Dor) stars are gravity-mode pulsators whose periods carry information about the internal structure of the star. These periods are especially sensitive to the internal rotation and chemical mixing,…

Solar and Stellar Astrophysics · Physics 2022-12-21 Stefano Garcia , Timothy Van Reeth , Joris De Ridder , Conny Aerts

The question of the existence of pre-main sequence (PMS) $\gamma$~Doradus ($\gamma$~Dor) has been raised by the observations of young clusters such as NGC~884 hosting $\gamma$~Dor members. We have explored the properties of $\gamma$~Dor…

Solar and Stellar Astrophysics · Physics 2015-05-19 M. -P. Bouabid , J. Montalbán , A. Miglio , M. -A. Dupret , A. Grigahcène , A. Noels

This article reviews the present knowledge on oscillating main sequence A/F stars that belong to more than one class of pulsator. Due to recent results of asteroseismic space missions, we now know of many Delta Scuti/Gamma Doradus stars.…

Solar and Stellar Astrophysics · Physics 2011-12-30 G. Handler

Gamma Doradus stars are excellent targets for asteroseismology since the gravity modes present in these stars probe the deep stellar interiors. Mode identification will improve the knowledge of these stars considerably. A selected group of…

Gamma Doradus stars (hereafter gamma Dor stars) are gravity-mode pulsators of spectral type A or F. Such modes probe the deep stellar interior, offering a detailed fingerprint of their structure. Four-year high-precision space-based Kepler…

We present data from high-dispersion echelle spectra and simultaneous $uvby$ photometry for $\gamma$~Doradus. These data were obtained from several sites during 1994 November as part of the MUSICOS-94 campaign. The star has two…

The MONS space experiment will be able to verify some of the most important topics in the asteroseismologic studies of Delta Sct and Gamma Dor stars. We discuss how the $\gamma$ Doradus can be considered possible "bridges" between the…

Astrophysics · Physics 2007-05-23 F. M. Zerbi , E. Poretti , C. Aerts , G. Handler , A. B. Kaye

A multisite campaign involving five observatories allowed us to solve the light curve of the Gamma Doradus star HD 224945. The multiperiodic content, the high frequency term at 3.00 c/d and the frequency spacing between the observed terms…

Astrophysics · Physics 2007-05-23 E. Poretti , C. Akan , M. Bossi , C. Koen , K. Krisciunas , E. Rodriguez

The space-missions MOST, CoRoT, and Kepler deliver a huge amount of high-quality photometric data suitable to study numerous pulsating stars. Our ultimate goal is a detection and analysis of an extended sample of Gamma Dor-type pulsating…

Over two dozen early F-type variable stars have been identified which constitute a new class of pulsating stars. These stars typically have periods between 0.5 and 3 days with V-band variability of several hundredths of a magnitude. Given…

Astrophysics · Physics 2008-02-03 K. Krisciunas

We have discovered both intermediate-order gravity mode and low-order pressure mode pulsation in the same star, HD 209295. It is therefore both a Gamma Doradus and a Delta Scuti star, which makes it the first pulsating star to be a member…

The TESS space mission provides us with high-precision photometric observations of bright stars over more than 70% of the entire sky, allowing us to revisit and characterise well-known stars. We aim to conduct an asteroseismic analysis of…

Solar and Stellar Astrophysics · Physics 2022-06-15 T. Van Reeth , P. De Cat , J. Van Beeck , V. Prat , D. J. Wright , H. Lehmann , A. -N. Chené , E. Kambe , S. L. S. Yang , G. Gentile , M. Joos

Based on the LAMOST spectroscopy and TESS time-series photometry, we have obtained a main-sequence star sample of $\delta$ Scuti and $\gamma$ Doradus stars. The sample includes 1534 $\delta$ Sct stars, 367 $\gamma$ Dor stars, 1703 $\delta$…

Solar and Stellar Astrophysics · Physics 2024-11-15 Jiyu Wang , Xiaodian Chen , Licai Deng , Jianxing Zhang , Weijia Sun
‹ Prev 1 2 3 10 Next ›