UCAC4 525-135123 (Del) - eclipsing binary star (W UMA type)

First discovery of variable star in IRIDA OBSERVATORY

UCAC4-525-135123 - eclipsing binary star of W UMa type was discovered by photometric observation in IRIDA observatory

THE PUBLICATION

Light curve solutions of six short-period binaries and peculiarities of two of them, NSVS 3640326 and V1007 Cas

D.Kjurkchieva, V.Popov, N.Petrov and E. Ivanov

UCAC4 525-135123

Other designations: 2MASS J20365262+1456434; SDSS DR9 J203652.62+145643.3

Reference CCD frame with the callibration stars

Phase plot: CCD observations

Date: 2014-08-15, 2014-08-18

Light curve solution - PHOEBE

 

3D model of the binary star

GLOBAL PARAMETERS OF THE STELLAR COMPONENTS
Star name UCAC4-525-135123
RA 20 36 52.63
Dec  +14 56 43.30
Epoch 245+ 6885.46200
Period, (d) 0.251580
q - mass ratio 0.624
T1 , (K) - stelar tmperature 5400
T2 , (K) - stelar tmperature 5009
D, (pc) - distance in parsecs 712.3
D, (ly) - distance in light years 2 323.30
M1bol - bolometric stellar magnitude 5.823
M2bol - bolometric stellar magnitude 6.466
L1bol - absolute blometric luminosity 0.374
L2bol - absolute blometric luminosity 0.207
a, (R⊙) - orbital separation in solar radii 1.663
R1 , (R⊙) -  the absolute stellar radii (in solar radii) 0.722
R2 , (R⊙) -  the absolute stellar radii (in solar radii) 0.585
M1, (M⊙) - the individual mass (in solar masses) 0.600
M2, (M⊙) - the individual mass (in solar masses) 0.374
g1 , the surface gravity (m s-2) 315.4
g1 , the surface gravity (m s-2) 299.2
ρ1 , the densities of the component (g cm-3) 2.249
ρ2 , the densities of the component (g cm-3) 2.630
 
 
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
 
e-mail: info@irida-observatory.org
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