Element Abundances in Blue Compact Galaxies

Details Element Abundances in Blue Compact Galaxies Element Abundances in Blue Compact Galaxies

Sep 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994mnras.270...35m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Vol. 270, NO. 1/SEP1, P. 35, 1994

Astronomy and Astrophysics

Astronomy

114

Scientific paper

Models of the chemical evolution of blue compact galaxies, where the star formation is assumed to proceed in short, intense bursts of activity, have been computed, with special attention to the evolution of helium, nitrogen, oxygen and iron. The contribution to the chemical enrichment by supernovae (SNe) of the various types (Ia, lb, II) is taken into account, following the most up-to-date prescriptions. Galactic winds powered by SNe are also considered and confirmed as being able to explain the observed element distributions. In particular, winds releasing metals in different proportions can explain the high ratio of {DELTA}(He/H)/{DELTA}(O/H) and the distribution of N/O with O/H observed in extragalactic HII regions. No anomalous assumption on the initial mass function (IMF) slope and/or mass cut-offs seems to be required to obtain model predictions in agreement with the data. In particular, Salpeter`s initial mass function is applicable to all these galaxies, although some slight differences cannot be excluded. The [O/Fe] ratios resulting from these models are always positive, except when many star formation episodes and differential galactic winds are assumed, thus suggesting the latter scenario for systems like the Magellanic Clouds, where the observed [O/Fe] ratios are negative.

Affiliated with

Also associated with

No associations

Rating

Element Abundances in Blue Compact Galaxies 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 Element Abundances in Blue Compact Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Element Abundances in Blue Compact Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1791628