J/MNRAS/325/1365 Solar neighbourhood metallicity distribution (Haywood+, 2001)
A revision of the solar neighbourhood metallicity distribution.
Haywood M.
<Mon. Not. R. Astron. Soc. 325, 1365 (2001)>
=2001MNRAS.325.1365H 2001MNRAS.325.1365H
ADC_Keywords: Stars, dwarfs ; Abundances, [Fe/H] ; Photometry, UBV
Keywords: stars: late-type - Galaxy: abundances - Galaxy: evolution -
solar neighbourhood
Abstract:
We present a revised metallicity distribution of dwarfs in the solar
neighbourhood. This distribution is centered on solar metallicity. We
show that previous metallicity distributions, selected on the basis of
spectral type, are biased against stars with solar metallicity or
higher. A selection of G-dwarf stars is inherently biased against
metal-rich stars and is not representative of the solar neighbourhood
metallicity distribution. Using a sample selected on colour, we obtain
a distribution where approximately half the stars in the solar
neighbourhood have metallicities higher than [Fe/H]=0. The percentage
of mid-metal-poor stars ([Fe/H←0.5) is approximately 4 per cent, in
agreement with the present estimates of the thick disc.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 28 348 The list of 348 stars
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HIP HIP (Cat. I/239) number
9- 13 F5.2 Sun [Fe/H] Metallicity
16- 19 F4.2 mag VMAG Absolute V magnitude
22- 25 F4.2 mag B-V B-V colour index
27 A1 --- ST [*] * : Selected long-lived dwarf stars
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History:
Prepared via OCR at CDS.
(End) James Marcout, Patricia Bauer [CDS] 09-Oct-2001