Lithium in optically-selected G and K stars in NGC 6475 (220 Myr)

D.J. James; A. Collier Cameron; J.R. Barnes; R.D. Jeffries

Lithium in optically-selected G and K stars in NGC 6475 (220 Myr)

D.J. James, A. Collier Cameron, J.R. Barnes, R.D. Jeffries

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

28 Downloads (Pure)

Abstract

Photometric members of the open cluster NGC 6475 were observed using high resolution spectroscopy for analysis of lithium abundances in their atmospheres. We combine these new data with previously obtained lithium data, and present a comparison with one younger and one older open cluster of similar composition. The most interesting result from these data shows that metallicity is a relatively unimportant feature in describing the evolution of lithium abundance distributions from young (~100 Myr) metal-rich solar-type stars to older ones (~700 Myr). We also argue that there is tentative evidence for different lithium abundance distributions for NGC 6475 members depending on whether they are optically or X-ray selected.

Original language	English
Title of host publication	In: Stellar Clusters and Associations: Convection, Rotation, and Dynamos - ASP Conf Series 198
Publisher	Astronomical Society of the Pacific
Pages	277-280
ISBN (Print)	1-58381-025-0
Publication status	Published - 2000

Access to Document

901631.pdf

Cite this

@inproceedings{fc9e47a56b424ab095fbd9ad55f07f9c,

title = "Lithium in optically-selected G and K stars in NGC 6475 (220 Myr)",

abstract = "Photometric members of the open cluster NGC 6475 were observed using high resolution spectroscopy for analysis of lithium abundances in their atmospheres. We combine these new data with previously obtained lithium data, and present a comparison with one younger and one older open cluster of similar composition. The most interesting result from these data shows that metallicity is a relatively unimportant feature in describing the evolution of lithium abundance distributions from young (~100 Myr) metal-rich solar-type stars to older ones (~700 Myr). We also argue that there is tentative evidence for different lithium abundance distributions for NGC 6475 members depending on whether they are optically or X-ray selected.",

author = "D.J. James and {Collier Cameron}, A. and J.R. Barnes and R.D. Jeffries",

note = "Original article can be found at: http://www.astrosociety.org/pubs/cs/195-221.html--Copyright Astronomical Society of the Pacific",

year = "2000",

language = "English",

isbn = "1-58381-025-0",

pages = "277--280",

booktitle = "In: Stellar Clusters and Associations: Convection, Rotation, and Dynamos - ASP Conf Series 198",

publisher = "Astronomical Society of the Pacific",

address = "United States",

}

TY - GEN

T1 - Lithium in optically-selected G and K stars in NGC 6475 (220 Myr)

AU - James, D.J.

AU - Collier Cameron, A.

AU - Barnes, J.R.

AU - Jeffries, R.D.

N1 - Original article can be found at: http://www.astrosociety.org/pubs/cs/195-221.html--Copyright Astronomical Society of the Pacific

PY - 2000

Y1 - 2000

N2 - Photometric members of the open cluster NGC 6475 were observed using high resolution spectroscopy for analysis of lithium abundances in their atmospheres. We combine these new data with previously obtained lithium data, and present a comparison with one younger and one older open cluster of similar composition. The most interesting result from these data shows that metallicity is a relatively unimportant feature in describing the evolution of lithium abundance distributions from young (~100 Myr) metal-rich solar-type stars to older ones (~700 Myr). We also argue that there is tentative evidence for different lithium abundance distributions for NGC 6475 members depending on whether they are optically or X-ray selected.

AB - Photometric members of the open cluster NGC 6475 were observed using high resolution spectroscopy for analysis of lithium abundances in their atmospheres. We combine these new data with previously obtained lithium data, and present a comparison with one younger and one older open cluster of similar composition. The most interesting result from these data shows that metallicity is a relatively unimportant feature in describing the evolution of lithium abundance distributions from young (~100 Myr) metal-rich solar-type stars to older ones (~700 Myr). We also argue that there is tentative evidence for different lithium abundance distributions for NGC 6475 members depending on whether they are optically or X-ray selected.

M3 - Conference contribution

SN - 1-58381-025-0

SP - 277

EP - 280

BT - In: Stellar Clusters and Associations: Convection, Rotation, and Dynamos - ASP Conf Series 198

PB - Astronomical Society of the Pacific

ER -

Lithium in optically-selected G and K stars in NGC 6475 (220 Myr)

Abstract

Access to Document

Fingerprint

Cite this