2004ApJ...614..380B

Query : 2004ApJ...614..380B

2004ApJ...614..380B - Astrophys. J., 614, 380-385 (2004/October-2)

Oscillation frequencies and mode lifetimes in α Centauri A.

BEDDING T.R., KJELDSEN H., BUTLER R.P., McCARTHY C., MARCY G.W., O'TOOLE S.J., TINNEY C.G. and WRIGHT J.T.

Abstract (from CDS):

We analyze our recently published velocity measurements of α Cen A. After adjusting the weights on a night-by-night basis in order to optimize the window function to minimize sidelobes, we extract 42 oscillation frequencies with l=0-3 and measure the large and small frequency separations. We give fitted relations to these frequencies that can be compared with theoretical models and conclude that the observed scatter about these fits is due to the finite lifetimes of the oscillation modes. We estimate the mode lifetimes to be 1-2 days, substantially shorter than in the Sun.

Abstract Copyright: ∼

Journal keyword(s): Stars: Individual: Constellation Name: α Centauri A - Stars: Oscillations - Techniques: Radial Velocities

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 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1

Query : 2004ApJ...614..380B

Basic data :
* alf Cen A -- Spectroscopic Binary
Other object types: otypes_help 		* (2021MNRAS,HD,...), PM* (LFT,LHS,...), ** (**,CCDM,...), SB* (2004A&A,SBC7,...), UV (TD1), NIR (2MASS)
ICRS coord. (ep=J2000) : 		14 39 36.49400 -60 50 02.3737 (Optical) [ 34.18 28.46 90 ] A 2007A&A...474..653V
FK4 coord. (ep=B1950 eq=1950) : 		14 36 11.98699 -60 37 32.5863 [ 34.18 28.46 90 ]
Gal coord. (ep=J2000) : 		315.73417134 -00.67965625 [ 34.18 28.46 90 ]
Proper motions mas/yr : 		-3679.25 473.67 [3.89 3.24 0] A 2007A&A...474..653V
Radial velocity / Redshift / cz : 		V(km/s) -15.252000 [0.167000] / z(spectroscopic) -0.000051 [0.000001] / cz -15.25 [0.17]
   (Opt) A 2021MNRAS.506..150B
Parallaxes (mas): 		742.12 [1.40] A 1997A&A...323L..49P
Spectral type: 		G2V C 2006A&A...460..695T
Fluxes (6) :
U 0.96 [~] C 2002yCat.2237....0D
B 0.72 [~] C 2002yCat.2237....0D
V 0.01 [~] C 2002yCat.2237....0D
J -1.454 [0.133] C 2003yCat.2246....0C
H -1.886 [0.220] D 2003yCat.2246....0C
K -2.008 [0.260] D 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1
: 1 		: 1 Display criteria :

Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 128620 GCRV 8517 2MASS J14393592-6050069 SKY# 26645
* alf Cen A GEN# +1.00128620A NAME Rigel Kentaurus SPOCS 610
* alf01 Cen GJ 559 A NAME Rigil Kentaurus TD1 17606
** RHD 1A HIC 71683 NLTT 37984 TIC 471011145
CCDM J14396-6050A HIP 71683 PLX 3309 TYC 9007-5849-1
CD-60 5293A HR 5459 PM 14362-6038A WDS J14396-6050A
CNS5 3627 IDS 14328-6025 A PMSC 14328-6025A WEB 12354
CPD-60 5483A LFT 1127 PPM 360911 Zkh 209
CSI-60 5483 41 LHS 50 SBC7 520
GALAH 140708001701306 LTT 5806 SBC9 815

References (1352 between 1850 and 2026) (Total 1352)
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 : 15    Rot : 5    Fe/H : 60    Plx : 3    PM : 3    SpT : 11   

   

Observing logs
IUE : 175   

   

External archives :

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

Link by name to the catalogue in VizieR :

HD 128620 CCDM J14396-6050A GALAH 140708001701306 GJ 559 A HIC 71683
HIP 71683 HR 5459 LHS 50 2MASS J14393592-6050069 NLTT 37984
PLX 3309 PPM 360911 TD1 17606 TYC 9007-5849-1 WDS J14396-6050A

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