Spectroscopy of HD 86222 – a quintuple system with an eclipsing component

Dimitrov, W.; Fagas, M.; Kamiński, K.; Kolev, D.; Kwiatkowski, T.; Bąkowska, K.; Rożek, A.; Bartczak, P.; Borczyk, W.; Schwarzenberg‐Czerny, A.

doi:10.1051/0004-6361/201321280

Cited by 4 publications

(3 citation statements)

References 14 publications

(10 reference statements)

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“…While the Galactic bulge systems do not have their spectroscopy done so far, many of the ASAS ones from Lee (2015) have their parameters published (e.g. Dimitrov et al 2014;Djurašević et al 2011;He lminiak et al 2009He lminiak et al , 2015aRatajczak et al 2013Ratajczak et al , 2016Różyczka et al 2013). …”

Section: Comparison With the Tres Resultsmentioning

confidence: 99%

HIDES spectroscopy of bright detached eclipsing binaries from the Kepler field – II. Double- and triple-lined objects

Hełminiak

Ukita

Kambe

et al. 2017

Monthly Notices of the Royal Astronomical Society

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We present the results of our spectroscopic observations of eight detached eclipsing binaries (DEBs), selected from the Kepler Eclipsing Binary Catalog. Radial velocities (RVs) were calculated from high resolution spectra obtained with the HIDES spectrograph, attached to the 1.88-m telescope of the Okayama Astrophysical Observatory, and were used to characterize the targets in combination with the Kepler light curves. For each binary we obtained a full set of orbital and physical parameters, reaching precision below 3% in masses and radii for 5 pairs. By comparing our results with theoretical models, we assess the distance, age and evolutionary status of the researched objects. We also study eclipse timing variations of selected objects, and identify a new system with a γDor pulsator. Two systems are triples, and show lines coming from three components. In one case the motion of the outer star and the perturbation in the RVs of the inner binary are clearly visible and periodical, which allows us to directly calculate the mass of the third star, and inclination of the outer orbit. In the second case we only see a clear motion of the tertiary, and investigate two scenarios: that it is a linear trend coming from the orbital motion around the inner binary, and that it is caused by a planetary mass companion. When possible, we also compare our results with the literature, and conclude that only by combining photometry with RVs it is possible to obtain correct physical parameters of both components of a DEB.

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Section: Comparison With the Tres Resultsmentioning

confidence: 99%

HIDES spectroscopy of bright detached eclipsing binaries from the Kepler field – II. Double- and triple-lined objects

Hełminiak

Ukita

Kambe

et al. 2017

Monthly Notices of the Royal Astronomical Society

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“…This is a rare example of a high-order (n > 3) multiple that contains an eclipsing binary. There are only several such known systems, including YY Gem, (Torres & Ribas 2002), V994 Her (Lee et al 2008), ASAS J011328-3821.1 (Hełminiak et al 2012), HD 86222 (Dimitrov et al 2014), KIC 7177553 (Lehmann et al 2016), 1SWASP J093010.78+533859.5 (Koo et al 2014), EPIC 220204960 (Rappaport et al 2017), V482 Per (Torres et al 2017), KIC 4150611 (Hełminiak et al 2017b), and EPIC 219217635 (Borkovits et al 2018). Such systems are usually found in hierarchical configurations, meaning that their components tend to form short-period pairs, which themselves are in large separations.…”

Section: Asas-052mentioning

confidence: 99%

Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue

Hełminiak

Tokovinin

Niemczura

et al. 2019

A&A

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Aims. We present results of the combined photometric and spectroscopic analysis of three detached eclipsing binaries, the secondary components of which are not visible or are very hard to identify in the optical spectra – ASAS J052743–0359.7, ASAS J065134–2211.5, and ASAS J073507–0905.7. The first one is the known visual binary ADS 4022, and we found that it is a quadruple system composed of two spectroscopic binaries, one of which shows eclipses. None of the systems have previously been recognized as a spectroscopic binary. Methods. We used the following telescopes/spectrographs to collect a number of high-resolution optical and IR spectra: Subaru/IRCS, CTIO-1.5 m/CHIRON, Euler/CORALIE, MPG-2.2 m/FEROS, OAO-188/HIDES, and TNG/HARPS-N. We used these data to calculate radial velocities (RVs) and later combined them with MITSuME and ASAS photometry. The Subaru/IRCS IR spectra were crucial for secure identification of the lines of the cooler components. Radial velocity measurements were made with the TODCOR technique, and RV curves were modelled with our own procedure V2FIT. Light-curve modelling was performed with JKTEBOP and PHOEBE codes. Temperatures and metallicities of two systems were estimated from spectra. For the ADS 4022 system we also used the archival WDS data and new SOAR observations in order to derive the orbit of the visual pair for the first time. Ages were estimated by comparing our results with PARSEC isochrones. Results. The eclipsing pair ASAS J052743–0359.7 A (P = 5.27 d) is composed of a 1.03(6) M⊙, 1.03(2) R⊙ primary and a 0.60(2) M⊙, 0.59(2) R⊙ secondary. The components of the P = 21.57 d non-eclipsing pair B likely have masses in between the two eclipsing components, and both pairs are on a ∼188 yr orbit around their common centre of mass. The system ASAS J065134-2211.5 (P = 8.22 d) consists of a 0.956(12) M⊙, 0.997(4) R⊙ primary and a 0.674(5) M⊙, 0.690(7) R⊙ secondary. Finally, ASAS J073507-0905.7 (P = 1.45 d), which consists of a 1.452(34) M⊙, 1.635(12) R⊙ primary and a 0.808(13) M⊙, 0.819(11) R⊙ secondary, is likely a pre-main sequence system. In all cases secondary eclipses are total.

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“…We obtained the second spectroscopic data set with the 0.5 m Poznań Spectroscopic Telescope 1 (PST1), which had already used been to observe other multiple stars with eclipsing component; in particular: DY Lyncis (Sekalska et al 2010) and HD 86222 (Dimitrov et al 2014). Despite the small diameter of the telescope, new components were detected in both cases.…”

Section: Spectroscopymentioning

confidence: 99%

V342 Andromedae B is an eccentric-orbit eclipsing binary

Dimitrov

Kamiński

Lehmann

et al. 2015

A&A

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We present a photometric and spectroscopic study of the visual binary V342 Andromedae. Visual components of the system have angular separations of 3 arcseconds. We obtained two spectroscopic data sets. An examination of both the A and B component spectra reveals that the B component is a spectroscopic binary with an eccentric orbit. The orbital period, taken from the Hipparcos Catalog, agrees with the orbital period of the B component measured spectroscopically. We also collected a new set of photometric measurements. The argument of periastron is close to 270 • and the orbit eccentricity is not seen in our photometric data. About five years after the first spectroscopic observations, a new set of spectroscopic data was obtained. We analysed the apsidal motion, but we did not find any significant changes in the orbital orientation. A Wilson-Devinney model was calculated based on the photometric and the radial velocity curves. The result shows two very similar stars with masses M 1 = 1.27 ± 0.01 M , M 2 = 1.28 ± 0.01 M , respectively. The radii are R 1 = 1.21 ± 0.01 R , R 2 = 1.25 ± 0.01 R , respectively. Radial velocity measurements of component A, the most luminous star in the system, reveal no significant periodic variations. We calculated the time of the eclipsing binary orbit's circularization, which is about two orders of magnitude shorter than the estimated age of the system. The discrepancies in the age estimation can be explained by the Kozai effect induced by the visual component A. The atmospheric parameters and the chemical abundances for the eclipsing pair, as well as the LSD profiles for both visual components, were calculated from two high-resolution, well-exposed spectra obtained on the 2-m class telescope.

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Spectroscopy of HD 86222 – a quintuple system with an eclipsing component

Cited by 4 publications

References 14 publications

HIDES spectroscopy of bright detached eclipsing binaries from the Kepler field – II. Double- and triple-lined objects

HIDES spectroscopy of bright detached eclipsing binaries from the Kepler field – II. Double- and triple-lined objects

Orbital and physical parameters of eclipsing binaries from the All-Sky Automated Survey catalogue

V342 Andromedae B is an eccentric-orbit eclipsing binary

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