The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682)

Details The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682) The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682)

Jan 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....117..330j&link_type=abstract

The Astronomical Journal, Volume 117, Issue 1, pp. 330-338.

Astronomy and Astrophysics

Astronomy

91

Galaxy: Open Clusters And Associations: General, Stars: Abundances, Stars: Evolution, Stars: Late-Type, Stars: Rotation

Scientific paper

We have used the HIRES spectrograph on the Keck 10 m telescope to obtain echelle spectra of 25 solar-type stars in the old open cluster M67 (NGC 2682) and have used these spectra to derive lithium abundances. This cluster, which has approximately the same age and composition as the Sun, shows a pattern of Li depletion different from either the Pleiades or the Hyades. At M<~1 M_solar, M67 is more Li depleted than the Hyades. For ~1 M_solar stars, M67 shows a significant spread in Li, with about two-thirds of the stars being Li-rich and the remainder Li-poor. The data are consistent with M67 having the same initial Li abundance as the initial solar abundance. This is further evidence that Li depletion in solar-type stars occurs during their main-sequence lifetimes, although at a slower rate than pre-main-sequence depletion. These M67 observations also indicate that a 1 M_solar star at the Sun's age can have an Li abundance within a range of ~1 dex, and that the Sun is not necessarily representative of all stars of its mass, age, and composition.

Affiliated with

Also associated with

No associations

Rating

The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682) 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 The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Evolution of the Lithium Abundances of Solar-Type Stars. VIII. M67 (NGC 2682) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1189303