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[Fizinfo] MTA CSFK CSI RENDKÍVÜLI SZEMINÁRIUM - 2013.08.13. (kedd) 14:00


Chronological Thread 
  • From: Uhlár Karola <uhlar AT konkoly.hu>
  • To: szeminar AT konkoly.hu, fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] MTA CSFK CSI RENDKÍVÜLI SZEMINÁRIUM - 2013.08.13. (kedd) 14:00
  • Date: Thu, 08 Aug 2013 12:42:08 +0200
  • List-archive: <http://mailman.kfki.hu/pipermail/fizinfo>
  • List-id: ELFT HÍRADÓ <fizinfo.lists.kfki.hu>

*MTA CSFK CSI
RENDKÍVÜLI SZEMINÁRIUM*

Elo~adó:***Nancy R. Evans* (Harvard-Smithsonian Center for Astrophysics)

Elo~adás címe: ***Cepheids, Binaries, and Star Formation: Making the Connection * *
*
Kivonat:
Cepheids provide insight into both star formation and stellar evolution. Multiwavelength studies supply binary/multiple properties for these reasonably massive stars, which allows the exploration of differences between between high and low mass stars formation. A 3 part program to derive binary parameters is underway. We are conducting a survey of Cepheids with the Hubble Space Telescope Wide Field Camera 3 (WFC3) to identify possible resolved companions, for example Eta Aql. X-ray observations (Chandra and XMM-Newton) can confirm whether possible low mass companions are young enough to be physical companions of Cepheids, hence providing constraints on star formation. In a related study of intermediate mass stars, Chandra X-ray observations of late B stars in Tr 16 have been used to determine the fraction which have low mass companions (which are X-ray active in contrast to the late B stars which are X-ray quiet). Finally, velocity data from the Groynya, et al. is being combined with CORAVEL data develop statistics on long period orbits.

Elo~adás ido~pontja: *2013. augusztus 13. (kedd), 14:00**
*
Elo~adás helyszíne: MTA CSFK CSI Elo~adóterme
1121 Budapest, Konkoly T. M. út 15-17.
begin:vcard
fn:Karola Uhlar
n:Uhlar;Karola
org:Konkoly Observatory
adr:;;Konkoly Thege M. u. 13-17.;Budapest;;1121;Hungary
email;internet:uhlar AT konkoly.hu
title:secretary
tel;work:+3613919322
tel;fax:+3612754668
version:2.1
end:vcard



  • [Fizinfo] MTA CSFK CSI RENDKÍVÜLI SZEMINÁRIUM - 2013.08.13. (kedd) 14:00, Uhlár Karola, 08/08/2013

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