ASTA31
Stjärnatmosfärer (7,5 hp)
PROJEKTARBETEN
Varje kursdeltagare väljer
ett fördjupningsämne, vilket dels redovisas muntligen inom kursen och dels
dokumenteras som en artikel om ett tidigare inte behandlat uppslagsord i
Wikipedia - http://www.wikipedia.org/
, förslagsvis på svenska eller engelska:
http://sv.wikipedia.org/wiki/Wikipedia:Deltagarportalen
; http://en.wikipedia.org/wiki/Wikipedia:Community_Portal
Arbetets omfattning
beräknas till ca två arbetsveckor
EXEMPEL PÅ ARTIKLAR SKAPADE AV
KURSDELTAGARNA VT2008:
Differential rotation in stars
Doppler imaging
Eddington
luminosity
Hypergiant
Neutron-star oscillations
Starspot
SUGGESTED PROJECT THEMES
This list only gives examples; other topics are equally welcome. In
alphabetical order:
* Asteroseismology
(ground-based and space-borne), and the mapping of also deeper stellar
atmospheric layers
* High-resolution spectrometers for future Extremely Large Telescopes: What will become
possible to observe with the E-ELT?
* Long-baseline optical interferometry:
Disks and surfaces of many stars can already now be resolved with ground-based
instruments
* Low-luminosity brown dwarfs:
Their atmospheres may be dominated by clouds, “weather” and rain
* Most luminous stars in the Galaxy:
How hot can they get before photon-gas pressure or other effects set a limit?
* Neutron star model atmospheres:
Depend on their very thin surface layer; much of the emission comes out in
X-rays
* Observing the Sun from different places:
Aims and results from the ongoing space missions Ulysses and STEREO,
and the future Solar Probe
* Solar surface imaging:
Aims and results from current and planned ground-based telescopes, and from the
current space mission Hinode (SOLAR-B)
* Space-based
stellar interferometry:
Future space interferometers may be able to produce images of active regions
across stellar surfaces
* Stellar activity cycles:
Those corresponding to the solar 11-year cycle, and very different ones
* Stellar rotation:
Solid-body
and differential, of the surface and of the interior; and how that can be
determined
* Stellar winds:
Those analogous to the hot solar wind, those accelerated by stellar radiation,
and those driven by heated dust |
