Bibcode
Grebel, E.; Gallagher, J. S.; Gouliermis, D.; Evans, A. S.; Fumagalli, M.; Elmegreen, B.; Elmegreen, D. M.; Dobbs, C.; de Mink, S. E.; Da Silva, R. L.; Clayton, G. C.; Christian, C. A.; Cignoni, M.; Brown, T. M.; Chandar, R.; Aloisi, A.; Andrews, J. E.; Lee, J. C.; Adamo, A.; Thilker, D. A.; Smith, L. J.; Schiminovich, D.; Schaerer, D.; Sabbi, E.; Regan, M. W.; Prieto, J.; Pellerin, A.; Nota, A.; Nair, P.; Martin, C. D.; Lennon, D. J.; Krumholz, M. R.; Kim, H.; Kennicutt, R.; Johnson, K. E.; Hunter, D. A.; Hilbert, B.; Herrero, A.; Whitmore, B. C.; Wofford, A.; Walterbos, R. A.; Van Dyk, S. D.; Tosi, M.; Calzetti, Daniela
Bibliographical reference
American Astronomical Society, AAS Meeting #223, #254.08
Advertised on:
1
2014
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Description
The Treasury program LEGUS (HST/GO-13364) is the first HST UV Atlas of
nearby galaxies, and is aimed at the thorough investigation of star
formation and its relation with galaxy environment, from the scales of
individual stars to those of ~kpc clustered structures. The 154-orbits
program is obtaining NUV,U,B,V,I images of 50 star-forming galaxies in
the distance range 4-12 Mpc, covering the full range of morphology, star
formation rate (SFR), mass, metallicity, internal structure, and
interaction state found in the local Universe. The imaging survey will
yield accurate recent (<50 Myr) star formation histories (SFHs) from
resolved massive stars, and the extinction-corrected ages and masses of
star clusters and associations. These extensive inventories of massive
stars, clustered systems, and SFHs will be used to: (1) quantify how the
clustering of star formation evolves both in space and in time; (2)
discriminate among models of star cluster evolution; (3) investigate the
effects of SFH on the UV SFR calibrations; (4) explore the impact of
environment on star formation and cluster evolution across the full
range of galactic and ISM properties. LEGUS observations will inform
theories of star formation and galaxy evolution, and improve the
understanding of the physical underpinning of the gas-star formation
relation and the nature of the clumpy star formation at high redshift.
LEGUS will generate the most homogeneous high-resolution, wide-field UV
dataset to date, building and expanding on the GALEX legacy. Data
products that will be delivered to the community include: catalogs of
massive stars and star clusters, catalogs of star cluster properties
(ages, masses, extinction), and a one-stop shop for all the ancillary
data available for this well-studied galaxy sample. LEGUS will provide
the reference survey and the foundation for future observations with
JWST and with ALMA. This abstract accompanies another one from the same
project, and presents the status of the project, its structure, and the
data products that will be delivered to the community; the other
abstract presents the science goals of LEGUS and how these will be
addressed by the HST observations.