2022ApJ...929..182J

Query : 2022ApJ...929..182J

2022ApJ...929..182J - Astrophys. J., 929, 182-182 (2022/April-3)

Convective Penetration in Early-type Stars.

JERMYN A.S., ANDERS E.H., LECOANET D. and CANTIELLO M.

Abstract (from CDS):

Observations indicate that the convective cores of stars must ingest a substantial amount of material from the overlying radiative zone, but the extent of this mixing and the mechanism that causes it remain uncertain. Recently, Anders et al. developed a theory of convective penetration and calibrated it with 3D numerical hydrodynamics simulations. Here we employ that theory to predict the extent of convective boundary mixing (CBM) in early-type main-sequence stars. We find that convective penetration produces enough mixing to explain core masses inferred from asteroseismology and eclipsing binary studies, and matches observed trends in mass and age. While there are remaining uncertainties in the theory, this agreement suggests that most CBM in early-type main-sequence stars arises from convective penetration. Finally, we provide a fitting formula for the extent of core convective penetration for main-sequence stars in the mass range from 1.1-60 M☉.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar physics - Stellar evolutionary models - Stellar convective zones

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 * gam Pav PM* 21 26 26.6049826473 -65 21 58.313057521 4.57 4.70 4.22 3.75 3.45 F9VFe-1.4CH-0.7 439 0

Query : 2022ApJ...929..182J

Basic data :
* gam Pav -- High Proper Motion Star
Other object types: otypes_help 		* (*,CD,...), PM* (2007A&A,LHS,...), MIR (AKARI,WISEA,...), V* (CSV,NSV), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		21 26 26.6049826473 -65 21 58.313057521 (Optical) [ 0.0637 0.0709 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		21 22 20.1383369360 -65 35 38.490846865 [ 0.0637 0.0709 90 ]
Gal coord. (ep=J2000) : 		328.1565869129867 -40.2921915113653 [ 0.0637 0.0709 90 ]
Proper motions mas/yr : 		80.815 800.573 [0.080 0.093 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -30.70 [0.15] / z(~) -0.000102 [0.000001] / cz -30.70 [0.15]
   A 2010A&A...521A..12M
Parallaxes (mas): 		108.0102 [0.1061] A 2020yCat.1350....0G
Spectral type: 		F9VFe-1.4CH-0.7 C 2006AJ....132..161G
Fluxes (9) :
U 4.57 [~] C 2002yCat.2237....0D
B 4.70 [~] C 2002yCat.2237....0D
V 4.22 [~] C 2002yCat.2237....0D
R 3.75 [~] C 2002yCat.2237....0D
G 4.089133 [0.002955] C 2020yCat.1350....0G
I 3.45 [~] C 2002yCat.2237....0D
J 3.27 [~] C 2002yCat.2237....0D
H 2.98 [~] C 2002yCat.2237....0D
K 2.91 [~] C 2002yCat.2237....0D
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Identifiers (47) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

LHS 3674 GEN# +1.00203608 2MASS J21262662-6521578 TIC 265488188
* gam Pav GJ 827 N30 4724 TYC 9111-1423-1
AKARI-IRC-V1 J2126267-652152 HD 203608 NLTT 51220 UBV 18453
CD-65 2751 HIC 105858 NSV 13689 UBV M 25659
Ci 20 1280 HIP 105858 PLX 5152 uvby98 100203608
CNS5 5277 HR 8181 PLX 5152.00 WEB 19198
CPC 21 4903 IRAS 21223-6535 PM 21223-6536 WISEA J212626.64-652156.8
CPD-65 3918 IRAS F21223-6535 PPM 365174 WISE J212626.99-652149.2
CSV 102086 JP11 3344 ROT 3116 Zkh 318
FK5 805 LFT 1630 SAO 254999 Gaia DR2 6401464693866921472
GC 29979 LPM 780 SKY# 40867 Gaia DR3 6401464693867773568
GCRV 13468 LTT 8510 TD1 28016

References (439 between 1850 and 2026) (Total 439)
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 : 20    Distance : 2    Rot : 7    Fe/H : 63    Plx : 5    PM : 9    SpT : 18   

   

Observing logs
Herschel : 2    ISO : 9    IUE : 7   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * gam Pav

Link by name to the catalogue in VizieR :

LHS 3674 AKARI-IRC-V1 J2126267-652152 CD-65 2751 CPD-65 3918 FK5 805
GJ 827 HD 203608 HIC 105858 HIP 105858 HR 8181
IRAS 21223-6535 IRAS F21223-6535 2MASS J21262662-6521578 NLTT 51220 NSV 13689
PLX 5152 PPM 365174 SAO 254999 TD1 28016 TYC 9111-1423-1
uvby98 100203608 WISEA J212626.64-652156.8 WISE J212626.99-652149.2 Gaia DR2 6401464693866921472 Gaia DR3 6401464693867773568

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