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SUMMARY:Colloquium: Coryn Bailer-Jones (MPIA)
DTSTART:20210429T123000Z
DTEND:20210429T133000Z
DTSTAMP:20260530T232505Z
UID:www.aip.de-868
CATEGORIES:Scientific
CATEGORIES:Generic Event
CATEGORIES:Public
CONTACT:Ivan Minchev <iminchev@aip.de>
DESCRIPTION:Tracing the origins of interstellar objects\nAbstract: The fi
 rst two interstellar objects (ISOs)\, 1I/&#x27\;Oumuamua and 2I/Borisov\, 
 were discovered in 2017 and 2019 as they passed within a couple of astrono
 mical units of the Earth and Sun. Using ground-based and HST data to recon
 struct their orbits\, together with Gaia data to trace back the positions 
 of stars in the solar neighbourhood\, we searched for stars that encounter
 ed these ISOs in the past (Bailer-Jones et al. 2018\, 2020). A close\, slo
 w encounter could indicate that the ISO originated from that stellar syste
 m. We identified some such encounters\, in particular one at 0.07 pc for 2
 I/Borisov. But how likely is this to be the parent star? What factors do w
 e need to take into account to determine this? What are the prospects for 
 more confident detections in the future? And what are ISOs anyway?\n
LOCATION:Colloquium Zoom room
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