Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies

Details Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies

2003-10-15

arxiv.org/abs/astro-ph/0310421v1

Astrophys.J.602:200-230,2004

Astronomy and Astrophysics

Astrophysics

53 pages, 3 Postscript figures, accepted for publication in the Astrophysical Journal

Scientific paper

10.1086/380830

We use spectroscopic observations of a sample of 82 HII regions in 76 blue compact galaxies to determine the primordial helium abundance Yp and the slope dY/dZ from the Y-O/H linear regression. To improve the accuracy of the dY/dZ measurement, we have included new spectrophotometric observations of 33 HII regions which span a large metallicity range, with oxygen abundance 12+log(O/H) varying between 7.43 and 8.30 (Zsun/30

Affiliated with

Also associated with

No associations

Rating

Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of 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 Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systematic effects and a new determination of the primordial abundance of 4He and dY/dZ from observations of blue compact galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-527158