Galaxies of the Local Group:
GALEX provided an unprecedented snapshot of the young stellar populations in galaxies, with sensitivity to
the lowest star-formation rates ever detected. Star formation was discovered in sites where it was not seen nor expected before.
here is a recent review
Hubble reveals in great detail how young stellar complexes form and evolve in different environments.
| click for high resolution version of the image
PHAT Panchromatic Hubble Andromeda Treasury Survey (coming soon)
Other studies and images:
Magellanic Clouds (coming soon)
Beyond the Local Group:
with GALEX, SPITZER, Hubble, ground-based images: see
list of publications
showing different galaxies, at optical
wavelengths and then in UV (far-UV=blue, near-UV=yellow): the UV light traces unambiguously the young stellar populations, even when they are inconspicuous in
visible light (credit: D.Thilker)
Groups of galaxies: multiwavelength studies