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Jeweils zwei Bedeckungsveränderliche bilden ein Quadruplett:
TIC 433545934: The first 2+2 type doubly eclipsing binary with extra, mutual eclipses
TIC 433545934 consists of two eclipsing binaries that are revolving around each other forming a 2+2 type quadruple system in which, additionally, one binary eclipses the stars of the other binary. The periods of the two inner, eclipsing binaries were found to be P_A = 2.07d and P_B = 1.41d, while the mutual or, outer periodis P_AB = 224.5d. The outer period alone makes this system the fifth most compact known 2+2-type quadruple. Moreover, what reallymakes TIC 433545934 unique is that TESS observed a triple-dipped extra eclipsing event when the stars of binary B eclipsed the two components of binary A.
TIC 433545934: The first 2+2 type doubly eclipsing binary with extra, mutual eclipses
TIC 433545934 consists of two eclipsing binaries that are revolving around each other forming a 2+2 type quadruple system in which, additionally, one binary eclipses the stars of the other binary. The periods of the two inner, eclipsing binaries were found to be P_A = 2.07d and P_B = 1.41d, while the mutual or, outer periodis P_AB = 224.5d. The outer period alone makes this system the fifth most compact known 2+2-type quadruple. Moreover, what reallymakes TIC 433545934 unique is that TESS observed a triple-dipped extra eclipsing event when the stars of binary B eclipsed the two components of binary A.