Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010eas....41..233w&link_type=abstract
EAS Publications Series, Volume 41, 2010, pp.233-252
Astronomy and Astrophysics
Astrophysics
1
Scientific paper
The discovery that the short-lived radionucleide 60Fe was present in the oldest meteorites suggests that the formation of the Earth closely followed the death of a massive star. I discuss three astrophysical origins: winds from an AGB star, injection of supernova ejecta into circumstellar disks, and induced star formation on the boundaries of HII regions. I show that the first two fail to match the solar system 60Fe abundance in the vast majority of star forming systems. The cores and pillars on the edges of HII regions are spectacular but rare sites of star formation and larger clumps with masses 103-4 M_&sun; at tens of parsec from a supernova are a more likely birth environment for our Sun. I also examine γ-ray observations of 60Fe decay and show that the Galactic background could account for the low end of the range of meteoritic measurements if the massive star formation rate was at least a factor of 2 higher 4.6 Gyr ago.
No associations
LandOfFree
Telescopes versus Microscopes: the puzzle of iron-60 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 Telescopes versus Microscopes: the puzzle of iron-60, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Telescopes versus Microscopes: the puzzle of iron-60 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1443619