V907 Sco Switched to the Eclipsing Mode Again

Autor: Petr Zasche, David Vokrouhlický, Brad N. Barlow, Martin Mašek

Publikováno v: The Astronomical Journal, Vol 165, Iss 3, p 81 (2023)

V907 Scorpii is a unique triple system in which the inner binary component has been reported to have switched on and off eclipses several times in modern history. In spite of its peculiarity, observational data on this system are surprisingly scarce.

Externí odkaz: https://doaj.org/article/35b04be7b1cd452ea72513333898476a

Apsidal motion and absolute parameters of GV Nor and V881 Sco based on mid-resolution spectroscopy and TESS photometry

Autor: Derya Sürgit, Petr Zasche, Petr Hadrava, Ahmet Erdem, Chris A Engelbrecht, Fred Marang, Martin Mašek, Daniel J Stevens

Publikováno v: Monthly Notices of the Royal Astronomical Society. 519:4699-4715

The veracity of stellar evolution models and theoretical internal structure constants may be subjected to stringent tests by using physical parameters obtained from spectroscopic and photometric observations of eclipsing binary systems that exhibit a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cbafc00bdfbd78ddc1453dee9a194be
https://doi.org/10.1093/mnras/stac3738

Possible substellar companions in dwarf eclipsing binaries: SDSS J143547.87+373338.5, NSVS 7826147, and NSVS 14256825

Autor: Jan Kára, Miloslav Zejda, Hana Kučáková, J. Merc, Marek Wolf, K. Hornoch, Petr Zasche

We present the new results of our long-term observational project to detect the small variations in the orbital periods of low-mass and short-period eclipsing binaries. About 120 new precise mid-eclipse times were obtained for three relatively well-k

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b308d628203aa4efe80e2bda746e6c7
http://arxiv.org/abs/2101.08475

TIC 168789840: A Sextuply-Eclipsing Sextuple Star System

Autor: Alan P. Smale, Adam H. Friedman, Greg Olmschenk, Thomas Barclay, Elisa V. Quintana, Hans Martin Schwengeler, Ethan Kruse, Patricia T. Boyd, Saul Rappaport, Christopher J. Burke, Douglas A. Caldwell, Brian P. Powell, Robert Gagliano, Andrei Tokovinin, James D. Armstrong, Joshua E. Schlieder, Enric Palle, George R. Ricker, David W. Latham, Richard Barry, Ivan Terentev, Mark Omohundro, Benjamin T. Montet, J. Villasenor, Joshua N. Winn, Tansu Daylan, Martin Mašek, Tom Jacobs, Phil Evans, Guillermo Torres, Bill Wohler, Rahul Jayaraman, Coel Hellier, Jeremy D. Schnittman, Petr Zasche, Emily A. Gilbert, Allan R. Schmitt, Roland Vanderspek, Jon M. Jenkins, Martti H. Kristiansen, Tamás Borkovits, Sara Seager, Karen A. Collins, Bernie Shiao, Thiam-Guan Tan, Knicole D. Colón, Daryll LaCourse, Veselin B. Kostov, Samuel N. Quinn, Andrew Vanderburg, Eric L. N. Jensen

Publikováno v: Powell, B P, Kostov, V B, Rappaport, S A, Borkovits, T, Zasche, P, Tokovinin, A, Kruse, E, Latham, D W, Montet, B T, Jensen, E L N, Jayaraman, R, Collins, K A, Mašek, M, Hellier, C, Evans, P, Tan, T-G, Schlieder, J E, Torres, G, Smale, A P, Friedman, A H, Barclay, T, Gagliano, R, Quintana, E V, Jacobs, T L, Gilbert, E A, Kristiansen, M H, Colón, K D, LaCourse, D M, Olmschenk, G, Omohundro, M, Schnittman, J D, Schwengeler, H M, Barry, R K, Terentev, I A, Boyd, P, Schmitt, A R, Quinn, S N, Vanderburg, A, Palle, E, Armstrong, J, Ricker, G R, Vanderspek, R, Seager, S, Winn, J N, Jenkins, J M, Caldwell, D A, Wohler, B, Shiao, B, Burke, C J, Daylan, T & Villaseñor, J 2021, ' TIC 168789840: A Sextuply Eclipsing Sextuple Star System ', Astronomical Journal, vol. 161, no. 4, 162 . https://doi.org/10.3847/1538-3881/abddb5

We report the discovery of a sextuply eclipsing sextuple star system from TESS data, TIC 168789840, also known as TYC 7037-89-1, the first known sextuple system consisting of three eclipsing binaries. The target was observed in Sectors 4 and 5 during

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ad48ca0c85727e1f858a20862466105

The two eccentric eclipsing binaries in multiple systems: V539 Arae and V335 Serpentis

Autor: R. Uhlař, Petr Zasche, Marek Wolf, Hana Kučáková, M. Souza de Joode, Miloslav Zejda, Martin Mašek

Publikováno v: New Astronomy. 92:101708

We present new results of our long-term observational project to analyze the variations of the orbital period for early-type eccentric eclipsing binaries. Altogether 77 new mid-eclipse times were measured or derived for two eclipsing binaries, namely

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4053a5b55c9fab5afbeee209e440bb30
https://doi.org/10.1016/j.newast.2021.101708