Two colour photometry and analysis of the eclipsing binary AT Pegasi

Gulmen, O.; Güdür, N.; Sezer, C.

doi:10.1007/bf00658150

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…Popper (1971) published radial velocity curves. Photometric observations were carried out by three different investigators (Srivastava 1976, Wood 1976, Gulmen et al 1980). The light curve analyses had been carried out by Gulmen et al (1980) and Russo et al (1981).…”

Section: Taumentioning

confidence: 99%

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The Evolutionary Statuses of Solar Type Detached Eclipsing Binary Stars

Kanjanascul¹,

Bach²,

Hong³

et al. 2012

Journal of Astronomy and Space Sciences

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We presented fundamental stellar parameters and evolutionary statuses of six solar type detached eclipsing binaries whose masses are in the range of 0.97-1.43 M ⊙ . EK Cep and FL Lyr belong to the zero age main sequence. HS Hya, IT Cas and CD Tau are on the main sequence. Their ages are 1.3, 1.9 and 2.2 Gyr, respectively. Both component stars of AI Phe evolved to sub giants and its age is 4.0 Gyr. Those ages of the detached binary systems show good agreement with the time scale for synchronization and circularization of the binary systems.

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Section: Taumentioning

confidence: 99%

“…Photometric observations were carried out by three different investigators (Srivastava 1976, Wood 1976, Gulmen et al 1980). The light curve analyses had been carried out by Gulmen et al (1980) and Russo et al (1981). The radial velocity curves had been analyzed by Popper (1971) and Ribas et al (1999), respectively.…”

Section: Taumentioning

confidence: 99%

The Evolutionary Statuses of Solar Type Detached Eclipsing Binary Stars

Kanjanascul¹,

Bach²,

Hong³

et al. 2012

Journal of Astronomy and Space Sciences

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Investigative study of five low mass ratio semi-detached binaries

Devarapalli,

Parthasarathy

et al. 2024

Astrophys Space Sci

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Photometric, Spectroscopic, and Orbital Period Study of Three Early-Type Semi-Detached Systems: Xz Aql, Ux Her, and at Peg

Zoła

Baştürk

Liakos

et al. 2016

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In this paper we present a combined photometric, spectroscopic and orbital period study of three early-type eclipsing binary systems: XZ Aql, UX Her, and AT Peg. As a result, we have derived the absolute parameters of their components and, on that basis, we discuss their evolutionary states. Furthermore, we compare their parameters with those of other binary systems and with the theoretical models. An analysis of all available up-to-date times of minima indicated that all three systems studied here show cyclic orbital changes; their origin is discussed in detail. Finally, we performed a frequency analysis for possible pulsational behavior and as a result we suggest that XZ Aql hosts a δ Scuti component. published the first light curve solution based on the spectroscopic orbit determined by Sanford (1937) and their own photometric observations. They proposed that the secondary was an evolved, low-mass, late-type star. Hill et al. (1975) estimated the primary component's spectral type as A0V -A3V for different orbital phases. Following the light curve studies of Cester et al. (1979), Mardirossian et al. (1980) and Giuricin & Mardirossian (1981), Lazaro et al. (1997) analyzed the first infrared light curves of the system in J, H and K bands, together with published B and V band light curves of Gordon & Kron (1965). They determined the parameters of the system and found that none of the components of the binary filled their Roche lobes. Although UX Her is a short-period system, they assigned it to a category of slightly detached systems, most of which, as they pointed out, were long-period systems. Djurašević et al. (2006) computed the mass ratio (q = m 2 / m 1 = 0.248) as the result of the q-search method. When combined with the results of their B and V band light curve analysis, this mass ratio value suggests a semi-detached configuration of UX Her. Kurzemnietse (1952) noted for the first time that the period was variable. Tremko et al. (2004) first published a period-variation study of the system, which excluded a mass transfer between the components as the cause of the observed variations in the orbital period of the system, since neither of the stars filled their Roche lobes according to their

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Two colour photometry and analysis of the eclipsing binary AT Pegasi

Cited by 3 publications

References 7 publications

The Evolutionary Statuses of Solar Type Detached Eclipsing Binary Stars

The Evolutionary Statuses of Solar Type Detached Eclipsing Binary Stars

Investigative study of five low mass ratio semi-detached binaries

Photometric, Spectroscopic, and Orbital Period Study of Three Early-Type Semi-Detached Systems: Xz Aql, Ux Her, and at Peg

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