TIC 452991707 and TIC 452991693 as a Candidate Sextuple System with Three Eclipsing Binaries

• Autorzy: Zasche P. , Henzl Z.

Identyfikatory

DOI

10.32023/0001-5237/72.2.2

• Języki publikacji: EN

Abstrakty

EN

We present the discovery of a rare system detected in the TESS data showing three different eclipsing-like signals. TIC 452991707 and TIC 452991693 seem to be the second such system on the sky, whose two components separated about 16" are gravitationally bounded, or comprise a co-moving pair. The three periods detected from the TESS data are: P_A=1.46155 d, P_B= 1.77418 d, and P_C=1.03989 d, respectively. The A and B periods belong to TIC 452991707, while the C comes from the component TIC 452991693. The pair A shows the deepest eclipses, and its orbit is very slightly eccentric. The third period C has lowest amplitude (eclipsing or ellipsoidal nature), but originates from TIC 452991693, which is connected to A+B because both visual components share similar proper motion and distance. Long-term collection of data from older photometry from various surveys also shows that the two inner pairs A and B orbit around their barycenter. Its period is probably of a few years, but for a final derivation of its orbital parameters one needs more up-to-date data. Hence, we call for new observations of this amazing system.

Słowa kluczowe

EN

binaries: eclipsing; stars: fundamental parameters

• Wydawca: Copernicus Foundation for Polish Astronomy
• Czasopismo: Acta Astronomica
• Rocznik: 2022
• Tom: Vol. 72, No. 2
• Strony: 103--111
• Opis fizyczny: Bibliogr. 24 poz., tab, wykr., zdj.

Twórcy

autor

Zasche P.

• Charles University, Faculty of Mathematics and Physics, Astronomical Institute, V Holešovičkách 2, CZ-180 00, Praha 8, Czech Republic

autor

Henzl Z.

• Variable Star and Exoplanet Section of the Czech Astronomical Society, Vsetínská 941/78, CZ-757 01, Valašské Meziříčí , Czech Republic

Bibliografia

• Bai, Y., Liu, J., Bai, Z., et al. 2019, AJ, 158, 93.
• Bayo, A., Rodrigo, C., Barrado y Navascués, D., et al. 2008, A&A, 492, 277.
• Borkovits, T., Hajdu, T., and Sztakovics, J. 2016, MNRAS, 455, 4136.
• Chambers, K.C., Magnier, E.A., Metcalfe, N., et al. 2016, arXiv:1612.05560.
• Gaia Collaboration, Brown, A.G.A., Vallenari, A., et al. 2018, A&A, 616, A1.
• Gaia Collaboration, Brown, A.G.A., Vallenari, A., et al. 2022, arXiv:2208.00211.
• Graczyk, D., Pietrzyński, G., Thompson, I.B. et al. 2014, ApJ, 780, 59.
• Guinan, E.F., and Engle, S.G. 2006, Astrophys. and Space Sci, 304, 5.
• Heinze, A.N., Tonry, J.L., Denneau, L., et al. 2018, AJ, 156, 241.
• Kochanek, C.S., Shappee, B.J., Stanek, K.Z., et al. 2017, PASP, 129, 104502.
• Kostov, V.B., Powell, B.P., Rappaport, S.A., et al. 2022, ApJS, 259, 66.
• Lee, C.-U., Kim, S.-L., Lee, J.W., et al. 2008, MNRAS, 389, 1630.
• Lightkurve Collaboration, Cardoso, J.V. de M., Hedges, C., et al. 2018, Astrophysics Source Code Library, ascl:1812.013.
• Masci, F.J., Laher, R.R., Rusholme, B., et al. 2019, PASP, 131, 018003.
• Paczynski, B. 1997, Proceedings of the ST ScI May Symposium, Eds. M. Livio, M. Donahue, and N. Panagia, Cambridge University Press, p. 273.
• Pollacco, D.L., Skillen, I., Collier Cameron, A., et al. 2006, PASP, 118, 1407.
• Powell, B.P., Kostov, V.B., Rappaport, S.A., et al. 2021, AJ, 161, 162.
• Prša, A., and Zwitter, T. 2005, ApJ, 628, 426.
• Shappee, B.J., Prieto, J.L., Grupe, D., et al. 2014, ApJ, 788, 48.
• Tokovinin, A. 2018, ApJS, 235, 6.
• Tokovinin, A. 2022, AJ, 163, 127.
• van Hamme, W. 1993, AJ, 106, 2096.
• Wilson, R.E., and Devinney, E.J. 1971, ApJ, 166, 605.
• Zasche, P., Henzl, Z., Lehmann, H., et al. 2020, A&A, 642, A63.