1 / 12

ASPA

H α Observations of the Binary System VV Cephei Ernst Pollmann. ASPA. Active Spectroscopy in Astronomy. 3. VV Cephei 4,9 mag. µ Cephei 4,0 mag. 1. 1a.

olive
Download Presentation

ASPA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hα Observations of the Binary System VV Cephei Ernst Pollmann ASPA Active Spectroscopy in Astronomy

  2. 3 VV Cephei 4,9 mag µ Cephei 4,0 mag 1

  3. 1a

  4. The orbit of the Be-star + Gasdisk leads to the eclipse by the M-type star Duration of eclipse: 673 daysPeriode: 20,4 years M2Iab Supergiant 2-3 Solar masses 1600 Solar radii Last eclipse: Jun/1996 – August/1998 2

  5. Rotating Hydrogen-Gasdisk and its hot Be-Star with 8 Solarmasses red shiftet blue shiftet Observer 3

  6. 4

  7. 5

  8. Time behavior of the Hα-emission since 1996 until today Eclipse 1997-99 6

  9. V/R of the Hα-emission as function of orbital phase 7

  10. 08/199401/2015 09/1999 09/2003 11/2009 Periastron passage 10/2004 11/2005 8

  11. Increase of the emission strength by mass overflow into the Be-disk at periastron 9

  12. thanks for attention 14

More Related