J/ApJS/193/1 UBVRIJHK color-temperature calibration (Worthey+, 2011)
An empirical UBV RI JHK color-temperature calibration for stars.
Worthey G., Lee H.-C.
<Astrophys. J. Suppl. Ser., 193, 1 (2011)>
=2011ApJS..193....1W 2011ApJS..193....1W
ADC_Keywords: Abundances, [Fe/H] ; Photometry, UBVRI ; Photometry, infrared ;
Stars, M-type
Keywords: stars: abundances - stars: fundamental parameters - stars: general
Abstract:
A collection of Johnson/Cousins photometry for stars with known [Fe/H]
is used to generate color-color relations that include the abundance
dependence. Literature temperature and bolometric correction (BC)
dependences are attached to the color relations. The JHK colors are
transformed to the Bessell & Brett (1988PASP..100.1134B 1988PASP..100.1134B) homogenized
system. The main result of this work is the tabulation of seven colors
and the V-band BC as a function of Teff, logg, and [Fe/H] for
-1.06<V-K<10.2 and an accompanying interpolation program. Improvements
to the present calibration would involve filling photometry gaps,
obtaining more accurate and on-system photometry, knowing better logg
and [Fe/H] values, improving the statistics for data-impoverished
groups of stars such as metal-poor K dwarfs, applying small tweaks in
the processing pipeline, and obtaining better empirical temperature
and BC relations, especially for supergiants and M stars. A way to
estimate dust extinction from M dwarf colors is pointed out.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 69 6825 Colors and bolometric correction summary table
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See also:
J/A+A/442/281 : Late-type giants BVRIJHKL and Teff calibration (Kucinskas+
2005)
J/A+A/458/293 : Temperature calibration for A + mid F-type stars (Paunzen+
2006)
J/MNRAS/371/1793 : Metallicity calibrations for UBV photometry (Karatas+ 2006)
http://astro.wsu.edu/models/ : Supporting data for this paper
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 4 F4.1 [Sun] [Fe/H] Metallicity
6- 9 F4.1 [cm/s2] log(g) Log of the surface gravity
11- 15 F5.2 mag V-K (V-K) color index
17- 22 F6.3 mag U-B (U-B) color index
24- 29 F6.3 mag B-V (B-V) color index
31- 36 F6.3 mag V-R (V-R) color index
38- 43 F6.3 mag V-I (V-I) color index
45- 50 F6.3 mag J-K (J-K) color index
52- 57 F6.3 mag H-K (H-K) color index
59- 63 I5 K Teff Effective temperature
65- 69 F5.2 mag BC V band bolometric correction
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 04-Apr-2011