Abundances of M33 HII regions (Magrini+, 2010)

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Galaxies: Nearby, H Ii Regions, Abundances

Scientific paper

We analyze the spatial distribution of metals in M33 using a new sample and literature data of HII regions, constraining a model of galactic chemical evolution with HII region and planetary nebula (PN) abundances. We consider chemical abundances of a new sample of HII regions complemented with previous literature data-sets. Supported by a uniform sample of nebular spectroscopic observations, we conclude that: i) the metallicity distribution in M33 is very complex, showing a central depression in metallicity probably due to observational bias; ii) the metallicity gradient in the disk of M33 has a slope of -0.037+/-0.009dex/kpc in the whole radial range up to ~8kpc, and -0.044+/-0.009dex/kpc excluding the central kpc; iii) there is a small evolution of the slope with time from the epoch of PN progenitor formation to the present-time. Description: Emission line fluxes, observed and dereddened of 33 HII regions are presented. Physical and chemical properties, such as electron temperatures and density, ionic and total chemical abundances of He, O, N, Ne, Ar, S, are derived.
(3 data files).

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Abundances of M33 HII regions (Magrini+, 2010) 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 Abundances of M33 HII regions (Magrini+, 2010), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abundances of M33 HII regions (Magrini+, 2010) will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1153112

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.