Physical parameters and orbit of the eclipsing binary BD +66 1663 = GSC 4479 412

Volkov, I. M.; Volkova, N. S.; Chochol, D.

doi:10.1134/s1063772910050057

Cited by 15 publications

(3 citation statements)

References 12 publications

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“…All the observations were corrected for the instrumental systems differences. The magnitudes were corrected also for nightly variations in the photometric zero point as we have done previously in similar studies (see, e.g.,Volkov et al [6]). These corrections found in the course of Light Curve (LC) solutions reached ±0.01 mag of the mean.…”

Section: Observations and Data Reductionmentioning

confidence: 94%

Apsidal motion and physical parameters in the eclipsing system V490 Sct

Volkov¹,

Kravtsova²

2021

Preprint

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We report long-termed U BV RIRcIc photometry of the highly eccentric 12.04 day detached eclipsing binary V490 Sct (V =13.1, B9.5+A0, e = 0.40), which we use to determine its relative and absolute parameters. The absolute masses, radii, and temperatures are MA = 2.33±0.1 M , RA = 1.91±0.04 R , and TA = 9960±60 K for the primary and MB = 2.24±0.1 M , RB = 1.86±0.04 R , and TB = 9700±80 K for the secondary. The system displays a slow periastron advance that is dominated by general relativity (GR). Our measurement, ω = 0.86 deg century −1 , is 32% less then the expected rate, ω = 1.24 deg century −1 , which has an 83% contribution from GR. A comparison with current stellar evolution models shows a good match to the measured properties at an age of about 130 mln. years and Solar abundance. The photometrical parallax of the system π = 0.77 ± 0.02 mas, matches quite well the GAIA DR2 value, π = 0.76 ± 0.04 mas.

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Section: Observations and Data Reductionmentioning

confidence: 94%

Apsidal motion and physical parameters in the eclipsing system V490 Sct

Volkov¹,

Kravtsova²

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…All the observations were corrected for the instrumental systems differences. The magnitudes were corrected also for nightly variations in the photometric zero-point as we have done previously in similar studies (see, e.g., Volkov et al 2010). These corrections were included in the search of Light Curve (LC) solutions as independent parameters and reached ±0.01 mag.…”

Section: Observations and Data Reductionmentioning

confidence: 99%

Apsidal Motion and Physical Parameters in the Eclipsing System V490 Sct

Volkov

Kravtsova

2022

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We report long-term UBVRIR c I c photometry of the highly eccentric 12.04 day detached eclipsing binary V490 Sct (V = 13.1, B9.5+A0, e = 0.40), which we use to determine its relative and absolute parameters. The absolute masses, radii, and temperatures are M A = 2.33 ± 0.07 M⊙, R A = 1.90 ± 0.04 R ⊙, and T A = 9960 ± 60 K for the primary and M B = 2.23±0.07 M⊙, R B = 1.86 ± 0.04 R ⊙, and T B = 9700 ± 80 K for the secondary. The system displays a slow periastron advance that is dominated by General Relativity (GR). Our measurement, ω ̇ = 0.86 deg century−1, is 32% less then the expected rate, ω ̇ = 1.24 deg century−1, which has an 83% contribution from GR. A comparison with current stellar evolution models shows a good match to the measured properties at an age of about 130 Myr and Solar abundance. The photometric parallax of the system π = 0.73 ± 0.04 mas, matches the GAIA DR2 value, π = 0.76 ± 0.04 mas.

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“…We always measured the brightness of both components of the visual double star together. Our techniques of the atmospheric extinction correction and the solution of the light curves were the same as those used in our previous papers: Volkov & Volkova (2009), Volkov et al (2010.…”

Section: Introductionmentioning

confidence: 99%