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J/A+A/458/293  Temperature calibration for A & mid F-type stars (Paunzen+, 2006)

An empirical temperature calibration for the Δa photometric system. II. The A-type and mid F-type stars. Paunzen E., Schnell A., Maitzen H.M. <Astron. Astrophys. 458, 293 (2006)> =2006A&A...458..293P
ADC_Keywords: Stars, early-type ; Effective temperatures ; Magnitudes Keywords: stars: early-type - techniques: photometric Abstract: With the Δa photometric system, it is possible to study very distant galactic and even extragalactic clusters with a high level of accuracy. The new calibration presented is a powerful extension. Because no a-priori reddening-free photometric parameters are available for the investigated spectral range, we have applied the dereddening calibrations of the Stromgren uvbyβ system and compared them with extinction models for the Milky Way. We derived an empirical temperature calibration for the Δa photometric system for A-type to mid F-type with a mean of the error for the whole sample of ΔT(eff) is 134K which is lower than the value in Paper I (Paunzen et al., 2005, Cat. J/A+A/444/941) for hotter stars. No statistically significant effect of the rotational velocity on the precision of the calibration was found. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 95 283 *List of 283 normal type stars used for the calibration
Note on table1.dat: see Geneva GCPD/75 for a short description of the Maitzen photometric system (1976A&A....51..223M)
See also: J/A+AS/117/227 : Dwarf effective temperatures (Alonso+ 1996) J/A+A/391/1039 : Metal-poor A-type stars effective temperature (Kinman+, 2002) J/A+A/411/559 : Effective temperature for 181 F-K dwarfs (Kovtyukh+, 2003) J/ApJ/626/446 : Effective temperature scale of FGK stars (Ramirez+, 2005) J/A+A/444/941 : Effective temperature of B stars (Paunzen+, 2005) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HD HD number (Cat. III/135) 8- 12 I5 --- HR HR number (Cat. V/50) 14- 18 F5.3 mag AV Adopted extinction 20- 24 F5.3 mag Vmag V magnitude 26- 30 I5 K Teff(uvby) Calibrated effective temperature (uvby) 32- 36 I5 K Teff(Geneva) Calibrated effective temperature (Geneva) 38- 42 I5 K Teff(UBV) Calibrated effective temperature (UBV) 44- 48 I5 K Teff Adopted effective temperature 50- 53 I4 K e_Teff Error of the adopted Teff 55- 60 F6.3 mag (g1-y)0 (g1-y)0 colour index 62- 67 F6.3 mag (b-y)0 Stroemgren (b-y)0 colour index 69- 74 F6.3 mag (B2-V1)0 Geneva (B2-V1)0 colour index 76- 81 F6.3 mag (B-V)0 Johnson (B-V)0 colour index 83- 85 I3 km/s vsini ?=-99 Rotational velocity, vsini (1) 87- 95 A9 --- SpType MK spectral type
Note (1): Magic number -99 means no available data
Acknowledgements: Ernst Paunzen, ernst.paunzen(at)
(End) Ernst Paunzen [IfA, Vienna], Patricia Vannier [CDS] 22-Aug-2006
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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