1 / 11

Life in the Universe

Life in the Universe. “Somewhere , something incredible is waiting to be known.” Carl Sagan (1934-1996). I. astronomy. Páll Jakobsson (pja@hi.is). 8 January 2013. The Exoplanet Next Door. Tau Ceti : A quintet of Exoplanets. 2-6 times Earth masses. 14.

shiela
Télécharger la présentation

Life in the Universe

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. Life in the Universe “Somewhere, something incredible is waiting to be known.” Carl Sagan (1934-1996) I. astronomy Páll Jakobsson (pja@hi.is) 8 January 2013

  2. The Exoplanet Next Door

  3. Tau Ceti: A quintet of Exoplanets 2-6 times Earth masses

  4. 14

  5. An exposure time of 2 million seconds! eXtreme Deep Field (XDF) 5,500 galaxies A small fraction of the angular diameter of the full Moon

  6. Hubble XDF (zoom-in)

  7. Hubble XDF (zoom-out)

  8. Looking Back into Time with the XDF

  9. Known Exoplanets • 1992: a few are discovered around a neutron star! • 1995: the first around Sun-like star (indirect measurement). • January 2013: 854 (http://exoplanet.eu): • Radial velocity + astrometry: 498 (386 planetary systems) • Transits: 291 (236 planetary systems) • Microlensing: 16 (15 planetary systems) • Imaging: 32 (28 planetary systems) • 1), 2) and 3) are indirect measurements.

  10. White dwarves and neutron stars

More Related