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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20180314T123000
DTEND;TZID=Atlantic/Canary:20180314T133000
UID:iactalks-1149
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/1149
CREATED:2018-03-14T12:30:00+00:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Update of Boyajian's star from observations in 2017: Has the myster
 y been solved?
DESCRIPTION:Update of Boyajian's star from observations in 2017: Has the my
 stery been solved?\nHans Deeg\n\nKIC 8462852, also known as the Boyajian's
  star, was observed by the Kepler mission during 4 years. During that time
 , this star underwent several events of strong brightness variations that 
 are unlike that of any other known astronomical object. Since 2017, an int
 ense ground-based observing campaign has been under way to closely survey 
 this target for further brightness variations. The coverage of several min
 or such variations from both multicolor photometry and spectrophotometry s
 howed that these events have a color-signature. This observation is compat
 ible with the hypothesis by Neslu?an & Budaj of a pool of dusty planet
 esimals that may occasionally pass close to the star. Their  opticall
 y thin dust shroud might then generate the observed colors. However, while
  current observations support this scenario, they do not prove it. Alterna
 tive explanations for the star’s behavior will be revised, and in pa
 rticular, variations in the temperature of the stellar surface will be eva
 luated for their compatibility with the observations. Furthermore, an upda
 te on the observing campaign of Boyajian’s star will be given, possi
 bly with input from new data acquired in the first half of 2018.
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