ELFT HÍRADÓ

[ilka AT konkoly.hu (Kalman Belane)]

                                  Meghivó
              az MTA KTM Csillagászati Kutatóintézete 
                        
                        rendkívüli szemináriumára


Elõadó: JAYMIE MATTHEWS
        (University of British Columbia, Vancouver, Canada)

Cím: "The MOST microsat: A suitcase full of stars (and exoplanets)"”

Abstract:

Size doesn't always matter.  Canada's MOST (Microvariability & 
Oscillations of STars) space telescope has an aperture of only 15 cm, and 
the satellite has a mass of only 54 kg.  But his 'orbiting suitcase' has 
become heavily packed with astrophysical data since leaving home.

MOST is an ultraprecise stellar photometer, a pioneer for the French CoRoT 
mission which has joined it in orbit two years ago, and for NASA's Kepler 
satellite, which went into space in March. MOST's original one-year 
mission was to conduct asteroseismology - probing stellar interiors via 
frequency analysis of subtle surface vibrations with net luminosity 
amplitudes as small as a few parts per million.  After over five years in 
orbit, MOST has extended its science to stellar activity, exo-Earth 
hunting, and even exoplanetary weather.

The results include: a new perspective on stellar convection and its 
connection to acoustic oscillations (p-modes); discovery of a new class of 
pulsators - the SPBe stars; a surface rotation profile for another star 
other than the Sun; measurements of the internal magnetic fields of stars; 
and the first real measure of the albedo of an exoplanet - a gas giant 
which is no more reflective than charcoal!

Az elõadás idõpontja: 2009.  június 29, hétfõ, 14 óra 

Helye: MTA KTM CSKI elõadóterme
       Budapest, XII., Konkoly Thege M. út 15-17.
     

Patkós László s.k.