2005ApJ...623..442M

Query : 2005ApJ...623..442M

2005ApJ...623..442M - Astrophys. J., 623, 442-446 (2005/April-2)

Atomic diffusion and ο Leonis.

MICHAUD G., RICHER J. and RICHARD O.

Abstract (from CDS):

Evolutionary models for stars of 1.85, 1.89, 1.97, 2.12, and 2.24 M☉are calculated, taking all effects of atomic diffusion into account. The stars of 1.97 and 2.24 M☉are shown to reproduce the position in the H-R diagram of the two components of ο Leonis at an age of 706 Myr. ο Leo A is at Teff∼6100 K, much cooler than most known Am stars. The abundance anomalies predicted for this star are also in agreement with observations. It is rapidly evolving toward the giant branch but was caught just before mixing wiped out its abundance anomalies. The model is the same as that used by Richer and coworkers for AmFm stars, and no adjustment of parameters was made for the calculations presented here. The anomalies observed on ο Leo are a strong argument in favor of that model for AmFm stars. The earlier model considered for Am stars implied anomalies over a much smaller fraction of the mass of Am stars and appears excluded by the anomalies observed on ο Leo A.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Convection - Diffusion - Stars: Chemically Peculiar - Stars: 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 * omi Leo SB* 09 41 09.0321741326 +09 53 32.308426423 4.22 4.01 3.52 3.11 2.88 F8-G0III+A7m 163 0

Query : 2005ApJ...623..442M

Basic data :
* omi Leo -- Spectroscopic Binary
Other object types: otypes_help 		* (*,AG,...), ** (1997A&AS,**,...), SB* (2008AJ,SBC7,...), X (RX,1RXS), IR (IRAS,IRC), UV (TD1), NIR (2MASS)
ICRS coord. (ep=J2000) : 		09 41 09.0321741326 +09 53 32.308426423 (Optical) [ 0.1934 0.1756 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		09 38 29.0024601098 +10 07 14.642713405 [ 0.1934 0.1756 90 ]
Gal coord. (ep=J2000) : 		224.6001868109937 +42.0557506975023 [ 0.1934 0.1756 90 ]
Proper motions mas/yr : 		-142.621 -37.338 [0.262 0.184 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 26.18 [0.05] / z(~) 0.000087 [0.000000] / cz 26.18 [0.05]
   A 2004A&A...424..727P
Parallaxes (mas): 		24.1976 [0.2408] A 2020yCat.1350....0G
Spectral type: 		F8-G0III+A7m C 2002ApJS..143..513G
Fluxes (9) :
U 4.22 [~] C 2002yCat.2237....0D
B 4.01 [~] C 2002yCat.2237....0D
V 3.52 [~] C 2002yCat.2237....0D
R 3.11 [~] C 2002yCat.2237....0D
G 3.420801 [0.003241] C 2022yCat.1355....0G
I 2.88 [~] C 2002yCat.2237....0D
J 2.68 [~] C 2002yCat.2237....0D
H 2.603 [0.246] D 2003yCat.2246....0C
K 2.43 [~] C 2002yCat.2237....0D
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Identifiers (57) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* omi Leo GSC 00821-02130 PMSC 09358+1020Aab TYC 821-2130-1
* 14 Leo HD 83808 PMSC 09358+1020Aac UBV M 15636
* omi Leo A HD 83809 PMSC 09358+1020 UBV 9195
** HMM 1 HIC 47508 PPM 156093 WDS J09412+0954Aa,Ab
** ARI 1 HIP 47508 Renson 23896 WDS J09412+0954A
** H 76A HR 3852 ROT 1500 WDS J09412+0954Aa,Ac
ADS 7480 A IDS 09358+1021 A RX J0941.1+0953 WEB 8912
AG+10 1245 IRAS 09384+1007 1RXS J094110.2+095330 YZ 10 3836
BD+10 2044 IRC +10210 SAO 98709 [HFE83] 675
CCDM J09412+0954A JP11 1844 SBC7 386 [ZEH2003] RX J0941.1+0953 1
CSI+10 2044 1 2MASS J09410902+0953321 SBC9 580 Gaia DR2 588551497558573056
FK5 365 N30 2313 SKY# 18720 Gaia DR3 588551501854159744
GC 13366 NAME Subra SRS 30365
GCRV 6240 PLX 2299 TD1 14176
GEN# +1.00083808 PMC 90-93 261 TIC 469018187

References (163 between 1850 and 2026) (Total 163)
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 : 3    Distance : 2    Rot : 4    Fe/H : 8    Plx : 4    PM : 6    SpT : 9   

   

Observing logs
IUE : 4   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * omi Leo

Link by name to the catalogue in VizieR :

AG+10 1245 BD+10 2044 CCDM J09412+0954A FK5 365 GSC 00821-02130
HD 83808 HD 83809 HIC 47508 HIP 47508 HR 3852
IRAS 09384+1007 IRC +10210 2MASS J09410902+0953321 PLX 2299 PPM 156093
1RXS J094110.2+095330 SAO 98709 TD1 14176 TYC 821-2130-1 WDS J09412+0954Aa,Ab
WDS J09412+0954A WDS J09412+0954Aa,Ac Gaia DR2 588551497558573056 Gaia DR3 588551501854159744

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