J/AJ/127/1227 Synthetic Stroemgren photometry (Clem+, 2004)
Empirically constrained color-temperature relations. II. uvby.
Clem J.L., Vandenberg D.A., Grundahl F., Bell R.A.
<Astron. J., 127, 1227-1256 (2004)>
=2004AJ....127.1227C 2004AJ....127.1227C
ADC_Keywords: Clusters, globular ; Photometry, uvby
Keywords: color-magnitude diagrams - globular clusters: general -
globular clusters: individual (M92, M3, 47 Tucanae) -
open clusters and associations: general -
open clusters and associations: individual (M67, Hyades, NGC 6791) -
stars: atmospheres - stars: fundamental parameters - stars: general
Abstract:
A new grid of theoretical color indices for the Stroemgren uvby
photometric system has been derived from MARCS model atmospheres and
SSG synthetic spectra for cool dwarf and giant stars having
-3.0≤[Fe/H]≤+0.5 and 3000≤Teff≤8000K.
In the present investigation, we have also analyzed the observed
Stroemgren photometry for the classic Population II subdwarfs, compared
our "final" (b-y)-Teff relationship with those derived empirically in
a number of recent studies and examined in some detail the dependence
of the m1 index on [Fe/H].
Description:
Our final sample consists of 478 field stars for which Houdashelt et
al. (2000, Cat. J/AJ/119/1448) or Alonso, Arribas, & Martinez-Roger
(1996, Cat. J/A+AS/117/227/1999A&AS..139..335A) provide estimates
for logg and [Fe/H].
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 61 478 Field Star Sample
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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 The Hipparcos (I/239) identification number
8- 11 I4 K Teff Effective temperature
13- 16 F4.2 [cm/s2] log(g) Logarithm of the surface gravity
18- 22 F5.2 Sun [Fe/H] Iron-to-hydrogen metallicity
24- 28 F5.2 mag Vmag The V-band magnitude
30- 34 F5.3 mag B-V The (B-V) color index
36- 40 F5.3 mag E(B-V) The (B-V) color excess
42- 46 F5.3 mag b-y Stroemgren (b-y) synthetic color index
48- 52 F5.3 mag m1 Stroemgren m1 synthetic index
54- 58 F5.3 mag c1 Stroemgren c1 synthetic index
60 I1 --- r_Teff Reference on Teff, log(g), Fe/H, and E(B-V) (1)
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Note (1): References are numbered as follows:
1 = Alonso, Arribas, & Martinez-Roger, 1996, Cat. J/A+AS/117/227
2 = Alonso, Arribas, & Martinez-Roger, 1999A&AS..139..335A 1999A&AS..139..335A
3 = Houdashelt, Bell, & Sweigart, 2000, Cat. J/AJ/119/1448
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History:
From electronic version of the journal
References:
VanDenberg & Clem, Paper I 2003AJ....126..778V 2003AJ....126..778V
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 02-Jul-2004