2013MNRAS.429.2500B

Query : 2013MNRAS.429.2500B

2013MNRAS.429.2500B - Mon. Not. R. Astron. Soc., 429, 2500-2514 (2013/March-1)

Effects of the Coriolis force on high-order g modes in γ Doradus stars.

BOUABID M.-P., DUPRET M.-A., SALMON S., MONTALBAN J., MIGLIO A. and NOELS A.

Abstract (from CDS):

γ Doradus stars pulsate with high-order gravity modes having typical frequencies which can be comparable to or higher than their rotation frequencies. Therefore, rotation has a non-negligible effect on their oscillation properties. To explore the rotation-pulsation coupling in γ Dor stars, we perform a non-adiabatic study including the traditional approximation of rotation on a grid of spherical stellar models covering the mass range 1.4 < M* < 2.1M☉. This approximation allows us to treat the effect of the Coriolis force on the frequencies and the stability of high-order g modes.

The effect of the Coriolis force depends on the kind of mode considered (prograde sectoral or not) and increases with their periods. As a consequence, we first find that the period spacing between modes is no longer periodically oscillating around a constant value. Secondly, we show that the frequency gap (5-15 cycles day-1) arising from stable modes between γ Dor-type high-order g modes and δ Scuti-type modes can be easily filled by g-mode frequencies shifted to higher values by the rotation. Thirdly, we analyse the combined effect of diffusive mixing and the Coriolis force on the period spacings. And finally, we predict a slight broadening of the γ Dor instability strip.


Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): stars: oscillations - stars: rotation - stars: variables: general

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 49434 gD* 06 48 19.0662941232 -01 19 08.124232296   6.015 5.731     F0V+ 98 0

Query : 2013MNRAS.429.2500B

Basic data :
HD 49434 -- gamma Dor Variable
Other object types: otypes_help 		gD* (), * (HD,AG,...), PM* (2018yCat), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		06 48 19.0662941232 -01 19 08.124232296 (Optical) [ 0.0393 0.0480 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		06 45 46.9269306224 -01 15 42.100225879 [ 0.0393 0.0480 90 ]
Gal coord. (ep=J2000) : 		213.7503065619152 -01.2954814669276 [ 0.0393 0.0480 90 ]
Proper motions mas/yr : 		-37.120 -35.061 [0.048 0.040 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -17.20 [0.2] / z(~) -0.000057 [0.000001] / cz -17.20 [0.20]
   A 2006AstL...32..759G
Parallaxes (mas): 		24.9902 [0.0546] A 2020yCat.1350....0G
Spectral type: 		F0V+ C 1989ApJS...69..301G
Fluxes (6) :
B 6.015 [0.014] D 2000A&A...355L..27H
V 5.731 [0.009] D 2000A&A...355L..27H
G 5.680271 [0.002853] C 2022yCat.1355....0G
J 5.402 [0.280] D 2003yCat.2246....0C
H 5.131 [0.026] C 2003yCat.2246....0C
K 5.010 [0.016] C 2003yCat.2246....0C
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Identifiers (28) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 49434 HIC 32617 SAO 133687 uvby98 100049434
AG-01 813 HIP 32617 SKY# 11989 YPAC 433
BD-01 1386 HR 2514 TD1 8161 YZ 91 1838
CoRoT 100 IRAS 06457-0115 TIC 36363632 [K77] 148
GC 8903 LF 9 -02 94 TYC 4800-2674-1 Gaia DR2 3107091187177468416
GEN# +1.00049434 2MASS J06481907-0119079 UBV 6743 Gaia DR3 3107091187177468416
GSC 04800-02674 PPM 176439 UBV M 12456 Gaia DR1 3107091182876285440

References (98 between 1850 and 2026) (Total 98)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 3    Rot : 2    Fe/H : 6    Plx : 5    PM : 4    SpT : 4   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : HD 49434

Link by name to the catalogue in VizieR :

HD 49434 AG-01 813 BD-01 1386 CoRoT 100 GSC 04800-02674
HIC 32617 HIP 32617 HR 2514 IRAS 06457-0115 LF 9 -02 94
2MASS J06481907-0119079 PPM 176439 SAO 133687 TD1 8161 TYC 4800-2674-1
uvby98 100049434 Gaia DR2 3107091187177468416 Gaia DR3 3107091187177468416 Gaia DR1 3107091182876285440

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