The Extremely Young Star Cluster Population In Haro 11

We have performed a deep multi-band photometric analysis of the star cluster population of Haro 11. This starburst galaxy (log L_FUV = 10.3 L_sun) is considered a nearby analogue of Lyman break galaxies (LBGs) at high redshift. The study of the numerous star clusters in the systems is an effective way to investigate the formation and evolution of the starburst phase. In fact, the SED fitting models have revealed a surprisingly young star cluster population, with ages between 0.5 and 40 Myr, and estimated masses between 10^3 and 10^7 solar masses. An independent age estimation has been done with the EW(Halpha) analysis of each cluster. This last analysis has confirmed the young ages of the clusters. We noticed that the clusters with ages between 1 and 10 Myr show a flux excess in H (NIC3/F160W) and/or I (WFPC2/F814W) bands with respect to the evolutionary models. Once more Haro 11 represents a challenge to our understanding.

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
Astrophysics - Cosmology and Extragalactic Astrophysics
Astronomy and astrophysics
Astronomi och astrofysik

Östlin, GöranStockholms universitet,Institutionen för astronomi(Swepub:su)ostlin (författare)
Zackrisson, ErikStockholms universitet,Institutionen för astronomi(Swepub:su)erza6638 (författare)
Hayes, Matthew (författare)
Stockholms universitetInstitutionen för astronomi (creator_code:org_t)

Ingår i:Galaxy WarsSan Francisco : Astronomical Society of the Pacific, s. 74-9781583817261

Av författaren/redakt...: Adamo, Angela; Östlin, Göran; Zackrisson, Erik; Hayes, Matthew

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