Copper and zinc in very metal-poor stars

Details Copper and zinc in very metal-poor stars Copper and zinc in very metal-poor stars

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...335..406s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 335, Dec. 1, 1988, p. 406-414.

Astronomy and Astrophysics

Astrophysics

62

Copper, Metallicity, Stellar Atmospheres, Zinc, Abundance, Charge Coupled Devices, Globular Clusters, Stellar Spectrophotometry

Scientific paper

New high-resolution, low-noise spectroscopic observations have been made of Cu I and Zn I transitions in five bright very metal deficient Population II stars. The Cu I lines are anomalously very weak in all five stars, while the Zn I lines retain reasonable strengths even in the most metal-poor example. A full model atmosphere LTE analysis of Cu and Zn in the program stars, and the inclusion of some results from earlier studies, demonstrate that regular trends exist in the abundances of these elements. First, Zn/Fe retains its solar ratio down to an overall stellar metallicity of Fe/H = -2.5 and even may begin to increase in more extremely metal-poor stars. Second, Cu/Fe declines steadily below Fe/H =-1, reaching less than 1/5 solar by Fe/H =-2.7. The different nucleosynthesis events which may account for the apparent primary origin for Zn and secondary origin for Cu are discussed.

Affiliated with

Also associated with

No associations

Rating

Copper and zinc in very metal-poor stars 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 Copper and zinc in very metal-poor stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copper and zinc in very metal-poor stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1753305