1997A&A...318..783F

Query : 1997A&A...318..783F

1997A&A...318..783F - Astronomy and Astrophysics, volume 318783-790 (1997/2-3)

The pre-main-sequence spectroscopic binary NTTS 162814-2427: models versus observations.

FIGUEIREDO J.

Abstract (from CDS):

Models of stars with masses between 0.5 and 1.5M☉ evolving in the pre-main-sequence (PMS) have been computed using a multiple shooting point hydrodynamic code. The theoretical results are compared with the most recent observational data available for the double-lined PMS spectroscopic binary NTTS 162814-2427. A comparison with theoretical models computed with different input physics concerning the opacities, the equation of state (EOS) and the convection treatment of superadiabatic regions is also done. Our reference model agrees well with the dynamical mass ratio and the assumption of coeval formation of the binary components. Accordingly, assuming a K4 primary and a K5 secondary we estimate the mass of the primary and secondary to be 1.10 and 1.00M☉, respectively, with an age of 3.7 million years.

Abstract Copyright: ∼

Journal keyword(s): binaries: spectroscopic - stars: pre-main-sequence - stars: evolution - stars: fundamental parameters

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 V* V2131 Oph Or* 16 31 15.7445171496 -24 34 02.161097472   12.0 12.05 11.06 10.13 ~ 102 0

Query : 1997A&A...318..783F

Basic data :
V* V2131 Oph -- Orion Variable
Other object types: otypes_help 		** (1997A&AS,PMSC,...), Y*? (2013ApJS,[HL2013]), * (2023A&A,ROXs,...), X (1AXG,2E,...), V* (NSV,V*), IR (IRAS,[EDJ2009]), TT* (NTTS), Or* (2017ARep), Y*O (2016A&A), SB* (SBC9), V*? (SV*), Rad (GBS), NIR (2MASS), MIR (SSTc2d)
ICRS coord. (ep=J2000) : 		16 31 15.7445171496 -24 34 02.161097472 (Optical) [ 0.2781 0.1807 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		16 28 13.8482963283 -24 27 36.428800656 [ 0.2781 0.1807 90 ]
Gal coord. (ep=J2000) : 		353.6917981593845 +15.9734502119712 [ 0.2781 0.1807 90 ]
Proper motions mas/yr : 		-5.565 -21.863 [0.420 0.291 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -14.97 [6.52] / z(spectroscopic) -0.000050 [0.000022] / cz -14.97 [6.52]
   (Opt) D 2018yCat.1345....0G
Parallaxes (mas): 		5.9041 [0.3012] A 2020yCat.1350....0G
Fluxes (8) :
B 12.0 [~] D 1994AJ....108.1445L
V 12.05 [0.03] D 2007ApJ...667..308C
R 11.06 [0.03] D 2007ApJ...667..308C
G 11.463615 [0.007625] C 2020yCat.1350....0G
I 10.13 [0.03] D 2007ApJ...667..308C
J 8.357 [0.027] C 2003yCat.2246....0C
H 7.512 [0.051] C 2003yCat.2246....0C
K 7.129 [0.024] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 2640 Display criteria :

Identifiers (22) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

2MASS J16311574-2434022 NSV 7780 SBC9 1861 [EDJ2009] 981
1AXG J163116-2434 NTTS 162814-2427 SSTc2d J163115.7-243402 [HL2013] 247.81556-24.56724
2E 3709 PMSC 16252-2421AB SV* SVS 1679 Gaia DR3 6047587769820678656
2E 1628.2-2427 PMSC 16252-2421 TIC 318448974 Gaia DR2 6047587769819856640
GBS-VLA J163115.75-243402.8 ROX 42 V* V2131 Oph
IRAS 16282-2427 ROXs 42C WDS J16312-2434Aa,Ab

References (102 between 1850 and 2026) (Total 102)
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 : 1    Distance : 1    Var : 1    Fe/H : 4    Plx : 1    PM : 1   

   

Observing logs
Herschel : 4    ISO : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* V2131 Oph

Link by name to the catalogue in VizieR :

2MASS J16311574-2434022 2E 3709 IRAS 16282-2427 NSV 7780 V* V2131 Oph
WDS J16312-2434Aa,Ab Gaia DR3 6047587769820678656 Gaia DR2 6047587769819856640

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