2007AJ....133.2684T

Query : 2007AJ....133.2684T

2007AJ....133.2684T - Astron. J., 133, 2684-2695 (2007/June-0)

Astrometric-spectroscopic determination of the absolute masses of the HgMn binary star φ Herculis.

TORRES G.

Abstract (from CDS):

The mercury-manganese star φ Her is a well-known spectroscopic binary that has been the subject of a recent study by Zavala and coworkers in which they resolved the companion using long-baseline interferometry. The total mass of the binary is now fairly well established, but the combination of spectroscopy with astrometry has not resulted in individual masses consistent with the spectral types of the components. The motion of the center of light of φ Her was clearly detected by the Hipparcos satellite. Here we make use of the Hipparcos intermediate data (``abscissa residuals'') and show that by combining them in an optimal fashion with the interferometry the individual masses can be obtained reliably using only astrometry. We reexamine and then incorporate existing radial velocity measurements into the orbital solution, obtaining improved masses of 3.05±0.24 and 1.614±0.066 M☉ that are consistent with the theoretical mass-luminosity relation from recent stellar evolution models. These mass determinations provide important information for the understanding of the nature of this peculiar class of stars.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: General - Stars: Binaries: Spectroscopic - Methods: Data Analysis - Stars: Chemically Peculiar - Stars: Fundamental Parameters - stars: individual (φ Herculis)

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 * phi Her a2* 16 08 46.1762180496 +44 56 05.661355344 3.92 4.20 4.27 4.27 4.36 B9VspHgMn 304 1

Query : 2007AJ....133.2684T

Basic data :
* phi Her -- alpha2 CVn Variable
Other object types: otypes_help 		* (*,AG,...), SB* (SBC7,SBC9), ** (**,WDS), V* (NSV,V*), a2* (2003AstL), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		16 08 46.1762180496 +44 56 05.661355344 (Optical) [ 0.4111 0.4383 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		16 07 11.5039762589 +45 03 54.261271748 [ 0.4111 0.4383 90 ]
Gal coord. (ep=J2000) : 		070.8477916735248 +47.1073745645184 [ 0.4111 0.4383 90 ]
Proper motions mas/yr : 		-25.359 36.884 [0.523 0.556 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -15.46 [0.37] / z(spectroscopic) -0.000052 [0.000001] / cz -15.46 [0.37]
   (Opt) A 2022yCat.1355....0G
Parallaxes (mas): 		13.5751 [0.4979] A 2020yCat.1350....0G
Spectral type: 		B9VspHgMn C 1995ApJS...99..135A
Fluxes (9) :
U 3.92 [~] C 2002yCat.2237....0D
B 4.20 [~] C 2002yCat.2237....0D
V 4.27 [~] C 2002yCat.2237....0D
R 4.27 [~] C 2002yCat.2237....0D
G 4.190117 [0.003029] C 2022yCat.1355....0G
I 4.36 [~] C 2002yCat.2237....0D
J 4.31 [~] C 2002yCat.2237....0D
H 4.33 [~] C 2002yCat.2237....0D
K 4.320 [0.015] C 2003yCat.2246....0C
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Identifiers (42) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* phi Her HIC 79101 PPM 55199 UBV M 21225
* 11 Her HIP 79101 Renson 41160 uvby98 100145389
** NOI 2 HR 6023 ROT 2288 V* phi Her
AG+45 1258 IRAS 16071+4503 SAO 45911 WDS J16088+4456AB
BD+45 2376 JP11 2712 SBC7 565 WEB 13373
FK5 601 2MASS J16084616+4456057 SBC9 887 YPAC 53
GC 21736 N30 3625 SKY# 29143 [HFE83] 1169
GCRV 9296 NSV 7490 TD1 18938 Gaia DR2 1386158505321789696
GEN# +1.00145389 PLX 3667 TIC 219480018 Gaia DR3 1386158505321789696
GSC 03067-01842 PLX 3667.00 TYC 3067-1842-1
HD 145389 PMC 90-93 429 UBV 13748

References (304 between 1850 and 2026) (Total 304)
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 : 11    Distance : 3    Var : 1    Rot : 13    Fe/H : 16    Plx : 5    PM : 7    SpT : 8   

   

Observing logs
IUE : 9   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * phi Her

Link by name to the catalogue in VizieR :

AG+45 1258 BD+45 2376 FK5 601 GSC 03067-01842 HD 145389
HIC 79101 HIP 79101 HR 6023 IRAS 16071+4503 2MASS J16084616+4456057
NSV 7490 PLX 3667 PPM 55199 SAO 45911 TD1 18938
TYC 3067-1842-1 uvby98 100145389 V* phi Her WDS J16088+4456AB Gaia DR2 1386158505321789696
Gaia DR3 1386158505321789696

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