Cited by 170Stellar, planetary, and galactic studiesGalaxies: Formation, Evolution, PhenomenaAstrophysics and Star Formation Studies

Population studies. I - The Bidelman-MacConnell 'weak-metal' stars

Norris, J., Bessell, M. S., Pickles, A. J.·1985·The Astrophysical Journal Supplement Series

Abstract

BVRI and DDO photometry together with kinematic data are presented for the spectroscopically chosen sample of Bidelman-MacConnell (BM) "weak-metal" stars. Analysis yields chemical abundances and space motions, which are compared with those of the kinematically selected sample of Eggen, Lynden-Bell, and Sandage (ELS). The BM sample appears to contain a significant proportion of low-abundance, low-eccentricity objects, in contrast to the results of ELS (≡ 20% of BM objects with [Fe/H] ≤ -1 have e ≤ 0.4). The velocity dispersion of such stars perpendicular to the galactic plane is 60±9 km s-1. Finally, for stars with [Fe/H] ≤ -1.2 the velocity ellipsoid is described by σu = 125±11, σv = 96±9, σw = 88±7 km s-1.

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Crossref · 10.1086/191049

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  • The thick disk has a significant metal-weak tail, often referred to as the metal-weak thick disk.

    “It also has a very significant tail, which is often referred to as the metalweak thick disk (Norris et al. 1985, Morrison et al. 1990, Morrison 1993, Beers et al. 2002).”

    From Streams, Substructures, and the Early History of the Milky Way (2020) · cites this paper as Norris et al. 1985

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Authors
Norris, J., Bessell, M. S., & Pickles, A. J.
Venue
The Astrophysical Journal Supplement Series
Published
1985-07
Volume
58
Pages
463
ISSN
  • 0067-0049 (ISSN-L)
  • 1538-4365
OpenAlex
W2045006058
Cited by
170
References
0
Citations by year
2025: 4 · 2024: 10 · 2023: 5 · 2022: 5 · 2021: 8 · 2020: 5 · 2019: 4 · 2018: 5 · 2017: 6 · 2016: 3 · 2015: 1 · 2014: 5 · 2013: 3 · 2012: 7
Type
conference abstract
Language
en
Open access
closed
Locations
The Astrophysical Journal Supplement Series (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astrophysics and Star Formation Studies
Keywords
chemical abundances, space motions, velocity ellipsoid, metal-poor stars, galactic kinematics, velocity dispersion, orbital eccentricity, Galactic halo

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