A New Determination of the Primordial Helium Abundance

Details A New Determination of the Primordial Helium Abundance A New Determination of the Primordial Helium Abundance

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ign..confe..41p&link_type=abstract

Ionized Gaseous Nebulae. Mexico City November 21- 24, 2000, meeting abstract

Other

Scientific paper

We analyze the observations of 45 oxygen poor extragalactic H II regions obtained by Izotov and Thuan. Based on this analysis we select the 12 best observed objects. We determine their He/H taking into account the optical depth in 3889, the density structure and the temperature structure. Using these values we determine the primordial helium abundance. This determination is in very good agreement with that derived by Peimbert, Peimbert, & Ruiz (2000) on the other hand it is considerably smaller than that derived by Izotov and Thuan from the same sample of objects. The main difference is due to the treatment of the temperature structure of these objects.

Affiliated with

Also associated with

No associations

Rating

A New Determination of the Primordial Helium Abundance 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 A New Determination of the Primordial Helium Abundance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Determination of the Primordial Helium Abundance will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1613227