2020RNAAS...4..145I

Query : 2020RNAAS...4..145I

2020RNAAS...4..145I - Research Notes of the AAS, 4, 145 (2020/August-0)

Photometric and Spectroscopic Analysis of Eclipsing Binary NSVS 11868841.

ISENBARGER M., VACCARO T., KAWKA A. and VENNES S.

Abstract (from CDS):

We present new photometric and spectroscopic data on the low-mass, eclipsing binary star NSVS 11868841. Light and velocity data are analyzed and modeled. Resulting best-fit models indicate a change in the orbital period. Our 2019 October observation of secondary eclipse occurs 0.01042 days prior to that predicted by the latest published ephemeris when assuming a circular orbit. Our spectroscopic data from 2009 and 2019 yield a consistent systemic velocity of -9.78 ± 1.3 km s^–1 and a mass ratio of 0.928 ± 0.016, both of which are significantly different than previous studies. Orbital period changes have not been indicated in earlier works either.

Journal keyword(s): Eclipsing binary stars - Variable stars - Binary stars - Photometry - Spectroscopy - Low mass stars - Eclipsing binary minima timing method - Variable star period change

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	NSVS 11868841	EB*	23 17 57.5597518968	+19 17 02.788488996			14.084			G9	18	0

Query : 2020RNAAS...4..145I

Basic data :

NSVS 11868841 -- Eclipsing Binary

* (UCAC2,NOMAD1,...), EB* (2010RMxAA), NIR (2MASS)

23 17 57.5597518968 +19 17 02.788488996 (Optical) [ 0.0129 0.0123 90 ] A 2020yCat.1350....0G

23 15 28.1081090056 +19 00 38.269952634 [ 0.0129 0.0123 90 ]

094.4124962735291 -38.3562700154500 [ 0.0129 0.0123 90 ]

11.225 3.389 [0.018 0.015 90] A 2020yCat.1350....0G

1.4852 [0.0169] A 2020yCat.1350....0G

G9 D 2014MNRAS.442.2620Z

V 14.084 [0.076] D 2010RMxAA..46..363C

G 13.864644 [0.004641] C 2020yCat.1350....0G

J 12.518 [0.026] C 2003yCat.2246....0C

H 12.069 [0.022] C 2003yCat.2246....0C

K 11.995 [0.021] C 2003yCat.2246....0C

g 14.567 [~] D 2020ApJS..249...18C

r 13.892 [~] D 2020ApJS..249...18C

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`UCAC2 38725210`	`NOMAD1 1092-0635554`	`UCAC3 219-298985`	`Gaia DR3 2825194032355609984`
`CRTS J231757.5+191702`	`NSVS 11868841`	`ZTF J231757.57+191702.8`
`2MASS J23175756+1917028`	`TIC 243084626`	`Gaia DR2 2825194032355609984`

References (18 between 1850 and 2026) (Total 18)
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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`UCAC2 38725210`	`2MASS J23175756+1917028`	`NOMAD1 1092-0635554`	`UCAC3 219-298985`	`Gaia DR2 2825194032355609984`
`Gaia DR3 2825194032355609984`

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