ELFT HÍRADÓ

[vidakris AT konkoly.hu]

Szemináriumi meghívó / Invitation to a seminar
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CSFK CSI SZEMINÁRIUM / KONKOLY OBSERVATORY SEMINAR

Date: May 07 (Thursday) 14:00


Tamás Borkovits (Baja Observatory of Szeged, Hungary)
Discovery of the most compact 3+1-type quadruple star system TIC 120362137

Hierarchical multiple stellar systems with short outer periods comprise an
important subgroup of multiple star systems. In this talk I present the
discovery and spectro-photodynamical analysis of the most compact known 3+1
quadruple stellar system, TIC 120362137. Through investigations of the
observations made with the TESS satellite and ground-based follow up
measurements, we find that the system consists of an eclipsing binary with a
few-day-period that in turn eclipses, and is eclipsed by, a third star on a
Pmid=51.3d orbit.  This inner subsystem, which contains three stars that
are more massive and hotter than the Sun, is more spatially compact than
Mercury's orbit around our Sun, and is orbited by a fourth Sun-like star with
a period Pout=1046d. We detect the spectral lines of all four stars, making
this system the most thoroughly studied 3+1 type quadruple stellar system. The
future evolution of TIC 120362137 is also modelled, and we conclude that this
entire system will likely end up as a pair of white dwarfs.


https://konkoly.hu/k-szeminariumok

The seminar will be held live in the Detre hall with audience, but also 
streamed online via Zoom. If you are unable to attend the presentation in 
person, you can join us via this link
https://us06web.zoom.us/j/82806911982?pwd=SVZpT0syQ1J6dHBvSkF4N2dXNEQ0dz09
or the meeting ID: 828 0691 1982 and passcode: 206265



Everyone is welcome!

Krisztián Vida, Mina Ghodsi
organizers
https://konkoly.hu/k-szeminariumok