2022RNAAS...6..196W

Query : 2022RNAAS...6..196W

2022RNAAS...6..196W - Research Notes of the AAS, 6, 196 (2022/September-0)

Characterization of a Solar Mass Eclipsing Binary with TESS and IGRINS.

WILSON M.J., TOFFLEMIRE B.M., KERR R., MANN A.W. and KRAUS A.L.

Abstract (from CDS):

Stellar radius measurements from eclipsing binaries are typically ∼5% larger than standard stellar models predict. This disagreement means we are unable to derive reliable model-dependent radii, which impact stellar and exoplanet characterization. Using light curves from the TESS satellite and high-resolution, near-infrared spectra from IGRINS, we determine the masses and radii of a main sequence eclipsing binary, V1177 Cen (TIC 3099339). We detrend the light curve using a Gaussian process and derive radial velocities using spectral-line broadening functions, fitting both jointly in an MCMC framework. We find that both stars are near 1 M⊙ with radii 6%-9% larger than the Sun. Based on the absence of Lithium in optical spectra, the inflation is potentially the effect of early post-main sequence evolution, or magnetic fields. We compare our measurement to model isochrones, finding the most consistent agreement with models that include magnetic fields, and correspond to an age of ∼4 Gyr.

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

Journal keyword(s): Eclipsing binary stars

CDS comments: Misprint in abstract in TIC identifier: “TIC 3099339” instead of “TIC 30993392” (V1177 Cen)

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* V1177 Cen EB* 13 24 18.1707066408 -37 17 01.359184308   9.777 9.029     G5V 24 0

Query : 2022RNAAS...6..196W

Basic data :
V* V1177 Cen -- Eclipsing Binary
Other object types: otypes_help 		* (HD,CD,...), EB* (2012A&A), V* (NSV,V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		13 24 18.1707066408 -37 17 01.359184308 (Optical) [ 0.0150 0.0125 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		13 21 26.6668971983 -37 01 23.208423943 [ 0.0150 0.0125 90 ]
Gal coord. (ep=J2000) : 		310.1467625739475 +25.1271944757719 [ 0.0150 0.0125 90 ]
Proper motions mas/yr : 		-40.876 -10.574 [0.016 0.014 90] A 2020yCat.1350....0G
Parallaxes (mas): 		10.3138 [0.0178] A 2020yCat.1350....0G
Spectral type: 		G5V C 1982MSS...C03....0H
Fluxes (6) :
B 9.777 [0.025] D 2000A&A...355L..27H
V 9.029 [0.017] D 2000A&A...355L..27H
G 8.907006 [0.002835] C 2020yCat.1350....0G
J 7.803 [0.020] C 2003yCat.2246....0C
H 7.484 [0.049] C 2003yCat.2246....0C
K 7.378 [0.021] C 2003yCat.2246....0C
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Identifiers (19) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 116447 HIC 65403 SAO 204430 V* V1177 Cen
CD-36 8539 HIP 65403 SV* BV 735 Gaia DR1 6162611422116184704
CPC 18 6433 2MASS J13241817-3717013 TIC 30993392 Gaia DR3 6162611426413334400
CPD-36 5899 NSV 6218 TYC 7276-1670-1 Gaia DR2 6162611426413334400
GSC 07276-01670 PPM 291335 UCAC2 15970199

References (24 between 1850 and 2026) (Total 24)
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

Distance : 2    Plx : 4    PM : 4    SpT : 2   

   

External archives :

Link by name to the catalogue in VizieR :

HD 116447 CD-36 8539 CPD-36 5899 GSC 07276-01670 HIC 65403
HIP 65403 2MASS J13241817-3717013 NSV 6218 PPM 291335 SAO 204430
TYC 7276-1670-1 UCAC2 15970199 V* V1177 Cen Gaia DR1 6162611422116184704 Gaia DR3 6162611426413334400
Gaia DR2 6162611426413334400

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