2024RNAAS...8..175K

Query : 2024RNAAS...8..175K

2024RNAAS...8..175K - Research Notes of the AAS, 8, 175 (2024/July-0)

J115307.93+353528.2-Spectroscopic Twin Binary, Composed of Solar Like Stars. Orbital Solution from Poorly Resolved Double-line Structure.

KOVALEV M.Y., CHEN X. and HAN Z.

Abstract (from CDS):

We present a study of double-lined spectroscopic binary (SB2) J115307.93+353528.2 based on data from the Large Sky Area Multi-Object fiber Spectroscopic Telescope (LAMOST) medium resolution survey (MRS). We use full-spectrum fitting to derive radial velocities and spectral parameters, which suggest that this is a “twin” system of two nearly identical stars, which are similar to the Sun. The orbital solution tells us that it is relatively wide pair of stars on slightly eccentric orbit with period P ≃ 206 days. This result shows that LAMOST-MRS data can be used to detect such twin binaries even when double-line structure is poorly resolved in the spectra. Changes of $(V\sin i)$ values from single star model analysis allows us to reliably select such SB2 candidate and to make first estimate of the orbital period.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Spectroscopic binary stars

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 LAMOST J115307.93+353528.2 * 11 53 07.9354478101 +35 35 28.212849815           ~ 2 0

Query : 2024RNAAS...8..175K

Basic data :
LAMOST J115307.93+353528.2 -- Star
Other object types: otypes_help 		* (Gaia), Opt (LAMOST)
ICRS coord. (ep=J2000) : 		11 53 07.9354478101 +35 35 28.212849815 (Optical) [ 0.0123 0.0125 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		11 50 32.4651468256 +35 52 10.175032182 [ 0.0123 0.0125 90 ]
Gal coord. (ep=J2000) : 		175.0696591183570 +74.9758222865489 [ 0.0123 0.0125 90 ]
Proper motions mas/yr : 		1.260 -11.287 [0.012 0.013 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -21.21 [4.67] / z(spectroscopic) -0.000071 [0.000016] / cz -21.21 [4.67]
   (Opt) C 2022yCat.1355....0G
Parallaxes (mas): 		0.9822 [0.0172] A 2020yCat.1350....0G
Fluxes (1) :
G 13.385900 [0.002764] C 2022yCat.1355....0G
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Identifiers (2) :
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LAMOST J115307.93+353528.2 Gaia DR3 4031608736157629312

References (2 between 1850 and 2026) (Total 2)
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    Plx : 1    PM : 1   

   

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Gaia DR3 4031608736157629312

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