Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-18
Astronomy and Astrophysics
Astrophysics
14 pages, 7 figures, accepted for publication in Astronomy & Astrophysics, higher resolution images at ftp://cutrex.fis.ucm.
Scientific paper
In this paper, continuation of Gil de Paz et al. (Paper I), we derive the main properties of the stellar populations in the Blue Compact Dwarf galaxy Mrk86. Ages, stellar masses, metallicites and burst strengths have been obtained using the combination of Monte Carlo simulations, a maximum likelihood estimator and Cluster and Principal Component Analysis. The three stellar populations detected show well defined properties. We have studied the underlying stellar population, which shows an age between 5-13 Gyr and no significant color gradients. The intermediate aged (30 Myr old) central starburst show a very low dust extinction with high burst strength and high stellar mass content (9 10^6 M_sun). Finally, the properties of 46 low-metallicity star-forming regions were also studied. The properties derived suggest that the most recent star-forming activity in Mrk86 was triggered by the evolution of a superbubble originated at the central starburst by the energy deposition of stellar winds and supernova explosions. Finally, different mechanisms for the star formation triggering in this massive central starburst are studied, including the merging with a low mass companion and the interaction with UGC4278.
Gallego Jesus
Gil de Paz Armando
Zamorano Jaime
No associations
LandOfFree
Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation 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 Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mapping the star formation history of Mrk86: II. Stellar populations and global interpretation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-684990