Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2011-02-11
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
16 pages, 13 figures, Accepted by AJ
Scientific paper
We show that star formation in the giant HII region NGC 5471 has been ongoing during the past 100 Myr. Using HST/WFPC2 F547M and F675W, ground based JHKs, and GALEX FUV and NUV images, we have conducted a photometric study of the star formation history in the massive giant extragalactic HII region NGC 5471 in M101. We perform a photometric study of the colour-magnitude diagram (CMD) of the resolved stars, and an integrated analysis of the main individual star forming clusters and of NGC 5471 as a whole. The integrated UV-optical-nIR photometry for the whole region provides two different reference ages, 8 Myr and 60 Myr, revealing a complex star formation history, clearly confirmed by the CMD resolved stellar photometry analysis. The spatial distribution of the stars shows that the star formation in NGC 5471 has proceeded along the whole region during, at least, the last 100 Myr. The current ionizing clusters are enclosed within a large bubble, which is likely to have been produced by the stars that formed in a major event < 20 Myr ago.
Apellaniz Jesus Maiz
Cervino Miguel
Diaz Angeles I.
Garcia-Benito Ruben
Pérez Enrique
No associations
LandOfFree
The 100 Myr Star Formation History of NGC 5471 from Cluster and Resolved Stellar Photometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The 100 Myr Star Formation History of NGC 5471 from Cluster and Resolved Stellar Photometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The 100 Myr Star Formation History of NGC 5471 from Cluster and Resolved Stellar Photometry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-84437