A Comprehensive Catalog of Galactic Eclipsing Binary Stars with Eccentric Orbits Based on Eclipse Timing Diagrams

Kim, C.-H.; Kreiner, J. M.; Zakrzewski, B.; Ogłoza, W.; Kim, H.-W.; Jeong, Min-Ji

doi:10.3847/1538-4365/aab7ef

Cited by 39 publications

(57 citation statements)

References 164 publications

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“…For five of the systems in common between Kim et al (2018) and our paper, the results are slightly different. This is likely to be due to different methodologies and possibly also the different weightings used for the times of minima.…”

Section: Note Added In Proofmentioning

confidence: 71%

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The first study of 54 new eccentric eclipsing binaries in our Galaxy

Zasche

Wolf

Uhlàř³

et al. 2018

A&A

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We present an analysis of the apsidal motion and light curve parameters of 54 never-before-studied galactic Algol-type binaries. This is the first analysis of such a large sample of eccentric eclipsing binaries in our Galaxy, and has enabled us to identify several systems that are worthy of further study. Bringing together data from various databases and surveys, supplemented with new observations, we have been able to trace the long-term evolution of the eccentric orbit over durations extending back up to several decades. Our present study explores a rather different sample of stars to those presented in the previously published catalogue of eccentric eclipsing binaries, sampling to fainter magnitudes, covering later spectral types, sensitive to different orbital periods with more than 50% of our systems having periods longer than six days. The typical apsidal motion in the sample is rather slow (mostly of order of centuries long), although in some cases this is less than 50 years. All of the systems, except one, have eccentricities less than 0.5, with an average value of 0.23. Several of the stars also show evidence for additional period variability. In particular we can identify three systems in the sample, HD 44093, V611 Pup, and HD 313631, which likely represent relativistic apsidal rotators.

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Section: Note Added In Proofmentioning

confidence: 71%

“…A new study on eccentric eclipsing binaries by Kim et al (2018) was published while this manuscript was in the final stages of publication. For five of the systems in common between Kim et al (2018) and our paper, the results are slightly different.…”

Section: Note Added In Proofmentioning

confidence: 99%

The first study of 54 new eccentric eclipsing binaries in our Galaxy

Zasche

Wolf

Uhlàř³

et al. 2018

A&A

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“…Hence, we would probably miss these potential triples rather than overestimate their fraction in the LMC eclipsing sample. Such a large fraction of potential triples is several times more than what was found in their sample by Kim et al (2018). However, they studied the stars in our Galaxy, where the field stars are of much later spectral type; hence, the multiplicity fraction is much lower (Duchêne & Kraus 2013).…”

Section: Discussionmentioning

confidence: 71%

“…17 we plotted the eccentricity versus orbital period. For comparison we also added other compilations and apsidal motion studies from LMC/SMC from Table 1, and the apsidal motion systems published in the catalogue of Kim et al (2018), who studied galactic systems. It is clearly seen that our present sample incorporates mainly the shorter-period systems (mostly below 4 days), but the overall tendency to detect the higher eccentricities only with longer periods is obvious.…”

Section: Properties Of the Samplementioning

confidence: 99%

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First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC

Zasche

Wolf

Kučáková

et al. 2020

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We present an extensive study of 162 early-type binary systems located in the LMC galaxy that show apsidal motion and have never been studied before. For the ample systems, we performed light curve and apsidal motion modelling for the first time. These systems have a median orbital period of 2.2 days and typical periods of the apsidal motion were derived to be of the order of decades. We identified two record-breaking systems. The first, OGLE LMC-ECL-22613, shows the shortest known apsidal motion period among systems with main sequence components (6.6 years); it contains a third component with an orbital period of 23 years. The second, OGLE LMC-ECL-17226, is an eccentric system with the shortest known orbital period (0.9879 days) and with quite fast apsidal motion period (11 years). Among the studied systems, 36 new triple-star candidates were identified based on the additional period variations. This represents more than 20% of all studied systems, which is in agreement with the statistics of multiples in our Galaxy. However, the fraction should only be considered as a lower limit of these early-type stars in the LMC because of our method of detection, data coverage, and limited precision of individual times of eclipses.

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Advanced Time Series Analysis of Generally Irregularly Spaced Signals: Beyond the Oversimplified Methods

Андронов¹

2020

Knowledge Discovery in Big Data From Astronomy and Earth Observation

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A Comprehensive Catalog of Galactic Eclipsing Binary Stars with Eccentric Orbits Based on Eclipse Timing Diagrams

Cited by 39 publications

References 164 publications

The first study of 54 new eccentric eclipsing binaries in our Galaxy

The first study of 54 new eccentric eclipsing binaries in our Galaxy

First apsidal motion and light curve analysis of 162 eccentric eclipsing binaries from LMC

Advanced Time Series Analysis of Generally Irregularly Spaced Signals: Beyond the Oversimplified Methods

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