zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group

Details zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group

Jun 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...358..233d&link_type=abstract

Astronomy and Astrophysics, v.358, p.233-241 (2000)

Astronomy and Astrophysics

Astrophysics

6

Stars: Fundamental Parameters, Stars: Abundances, Stars: Chemically Peculiar, Galaxy: Open Clusters And Associations: Individual: Zeta Herculis Stellar Kinematic Group

Scientific paper

We report the detailed analysis of the solar type stars zeta 1 and zeta 2 Reticuli. We obtained accurate effective temperatures (T_eff = 5746 +/- 27 K and 5859 +/- 27 K respectively) and surface gravities (log g = 4.54 +/- 0.02 and 4.46 +/- 0.01 respectively). Both stars are slightly metal deficient ([Fe/H] = -0.22 +/- 0.05) and their element abundance patterns are compatible with one another and with the Sun. The hypothesis, suggested by previous detailed analyses, that these stars could be helium rich relative to the Sun, was investigated. The stars were found to have a normal, solar helium abundance. We analysed the stars' membership of the zeta Herculis stellar kinematic group (SKG). Some probable members have nearly the same galactic orbital parameters, chemical composition and evolutionary states, which confirm the existence of a metal deficient SKG. Since we determined that zeta Herculis does not belong to this group, we propose it be renamed zeta Reticuli SKG. Based on observations collected at the European Southern Observatory, La Silla, Chile, and at the Observatório do Pico dos Dias, operated by the Laboratório Nacional de Astrofísica, CNPq, Brazil.

Affiliated with

Also associated with

No associations

Rating

zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group 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 zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and zeta 1 and zeta 2 Reticuli and the existence of the zeta Herculis group will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1387102