2018JAVSO..46...57S

Query : 2018JAVSO..46...57S

2018JAVSO..46...57S - J. Am. Assoc. Variable star obs., 46, 57 (2018/June-0)

First Precision Photometric Observations and Analyses of the Totally Eclipsing, Solar Type Binary V573 Pegasi.

SAMEC R., CATON D. and FAULKNER D.

Abstract (from CDS):

CCD VRcIc light curves of V573 Peg were taken 26 and 27 September and 2, 4, and 6 October, 2017, at the Dark Sky Observatory in North Carolina with the 0.81-m reflector of Appalachian State University. Five times of minimum light were calculated, two primary and three secondary eclipses, from our present observations. The following quadratic ephemeris was determined from all available times of minimum light: JD Hel MinI = 2456876.4958 (2) d + 0.41744860 (8) x E -2.74 (12) x 10-10 x E2, where the parentheses hold the ± error in the last two digits of the preceding value. A 14-year period study (covered by 24 times of minimum light) reveals a decreasing orbital period with high confidence, possibly due to magnetic braking. The mass ratio is found to be somewhat extreme, M2/ M1 = 0.2629 ± 0.0006 (M1/ M2 = 3.8). Its Roche Lobe fill-out is ∼25%. The solution had no need of spots. The component temperature difference is about 130 K, with the less massive component as the hotter one, so it is a W-type W UMa Binary. The inclination is 80.4 ± 0.1°. Our secondary eclipse shows a time of constant light with an eclipse duration of 24 minutes. More information is given in the following report.

Abstract Copyright: © (c)2018: The American Association of Variable Star Observers

Journal keyword(s): binaries: close - binaries: eclipsing - stars: evolution - stars: individual: (V573 Peg)

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

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* V573 Peg EB* 23 10 34.2363058848 +31 42 53.948224224   12.1 12.54     ~ 16 0

Query : 2018JAVSO..46...57S

Basic data :
V* V573 Peg -- Eclipsing Binary
Other object types: otypes_help 		EB* (2006AJ,[GGM2006]), * (GSC,NSVS,...), Opt (ATO,LAMOST), EB? (2018AJ), V* (V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		23 10 34.2363058848 +31 42 53.948224224 (Optical) [ 0.0092 0.0095 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		23 08 09.4674769418 +31 26 36.601826255 [ 0.0092 0.0095 90 ]
Gal coord. (ep=J2000) : 		099.0560449079424 -26.4381982057596 [ 0.0092 0.0095 90 ]
Proper motions mas/yr : 		0.167 -8.008 [0.012 0.011 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -5.79 [8.46] / z(spectroscopic) -0.000019 [0.000028] / cz -5.79 [8.46]
   (Opt) D 2020RAA....20..163Q
Parallaxes (mas): 		1.7804 [0.0128] A 2020yCat.1350....0G
Fluxes (7) :
B 12.1 [~] E ~
V 12.54 [~] V3 D 2014ApJS..213....9D
G 12.357163 [0.008409] C 2020yCat.1350....0G
J 11.195 [0.029] C 2003yCat.2246....0C
H 10.92 [0.03] C 2003yCat.2246....0C
K 10.881 [0.020] C 2003yCat.2246....0C
g 12.686 [~] D 2020ApJS..249...18C
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Identifiers (13) :
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GSC 02751-01007 2MASS J23103423+3142539 V* V573 Peg Gaia DR3 1910663755503505152
ATO J347.6426+31.7149 NSVS 9014625 ZTF J231034.23+314253.9
CRTS J231034.2+314254 SAVS J231034+314253 [GGM2006] 9014624
LAMOST J231034.23+314253.8 TIC 306073518 Gaia DR2 1910663755503505152

References (16 between 1850 and 2026) (Total 16)
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 : 2    Var : 7    Fe/H : 1    Plx : 2    PM : 2   

   

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Link by name to the catalogue in VizieR :

GSC 02751-01007 2MASS J23103423+3142539 V* V573 Peg Gaia DR2 1910663755503505152 Gaia DR3 1910663755503505152

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