2005A&A...443..627T

Query : 2005A&A...443..627T

2005A&A...443..627T - Astronomy and Astrophysics, volume 443627-641 (2005/11-4)

Helium settling and mass loss in magnetic Ap stars. I. The chemical stratification.

THEADO S., VAUCLAIR S. and CUNHA M.S.

Abstract (from CDS):

The chemical stratification is likely to play a predominant role in the excitation mechanism of high order modes in rapidly oscillating Ap stars. In this paper we discuss some processes (convection, He settling, mass loss and turbulent mixing) which may strongly affect the chemical composition of Ap stars. We discuss their interplay with a dipolar magnetic field in both magnetic polar and equatorial regions, where the magnetic lines are respectively mainly radially and horizontally oriented. We also present stellar evolutionary computations for magnetic Ap stars. As the magnetic geometry strongly breaks the sphericity of the star, we modeled and computed the polar and equatorial regions separately. We examine the effects of various chemical transport processes on the chemical stratification of both regions. In a forthcoming paper, we will study the stability of these models against pulsations.

Abstract Copyright: ∼

Journal keyword(s): diffusion - stars: abundances - stars: chemically peculiar - stars: interiors - stars: magnetic field - stars: mass loss

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 116114 PM* 13 21 46.3079033856 -18 44 31.563482928   7.34 7.02     F0VpSrCrEu 145 0

Query : 2005A&A...443..627T

Basic data :
HD 116114 -- High Proper Motion Star
Other object types: otypes_help 		* (HD,BD,...), PM* (2016A&A), UV (TD1), NIR (2MASS)
ICRS coord. (ep=J2000) : 		13 21 46.3079033856 -18 44 31.563482928 (Optical) [ 0.0586 0.0456 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		13 19 04.9972349857 -18 28 49.585405836 [ 0.0586 0.0456 90 ]
Gal coord. (ep=J2000) : 		312.8600778978170 +43.5441167468883 [ 0.0586 0.0456 90 ]
Proper motions mas/yr : 		-53.096 -14.517 [0.077 0.057 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 6.913 [0.0008] / z(spectroscopic) 0.000023 [0.000000] / cz 6.91 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		7.1959 [0.0847] A 2020yCat.1350....0G
Spectral type: 		F0VpSrCrEu C 1979PASP...91..176A
Fluxes (6) :
B 7.34 [0.01] D 2000A&A...355L..27H
V 7.02 [0.01] D 2000A&A...355L..27H
G 6.982799 [0.002766] C 2020yCat.1350....0G
J 6.478 [0.019] C 2003yCat.2246....0C
H 6.417 [0.034] C 2003yCat.2246....0C
K 6.349 [0.023] C 2003yCat.2246....0C
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Identifiers (21) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 116114 HIP 65203 TD1 16795 Gaia DR2 3507882897984968320
BD-17 3829 2MASS J13214631-1844315 TIC 6118924 Gaia DR3 3507882897984968320
GC 18075 PPM 227174 TYC 6124-817-1 Gaia DR1 3507882893690288896
GEN# +1.00116114 Renson 33530 uvby98 100116114
GSC 06124-00817 SAO 157882 YZ 0 5972
HIC 65203 SKY# 24667 YZ 108 5056

References (145 between 1850 and 2026) (Total 145)
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 : 2    Diameter : 1    Distance : 2    Rot : 1    Fe/H : 5    Plx : 5    PM : 5    SpT : 3   

   

External archives :

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

Link by name to the catalogue in VizieR :

HD 116114 BD-17 3829 GSC 06124-00817 HIC 65203 HIP 65203
2MASS J13214631-1844315 PPM 227174 SAO 157882 TD1 16795 TYC 6124-817-1
uvby98 100116114 Gaia DR2 3507882897984968320 Gaia DR3 3507882897984968320 Gaia DR1 3507882893690288896

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