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J/A+A/333/231       O-M stars model atmospheres (Bessell+ 1998)

Model atmospheres broad-band colors, bolometric corrections and temperature calibrations for O - M stars Bessell M.S., Castelli F., Plez B. <Astron. Astrophys. 333, 231 (1998)> =1998A&A...333..231B (SIMBAD/NED BibCode)
ADC_Keywords: Models, atmosphere ; Photometry, UBVRIJKLMNH Keywords: stars: atmospheres; fundamental parameters; general Abstract: Broad band colors and bolometric corrections in the Johnson-Cousins-Glass system (Bessell, 1990PASP..102.1181B; Bessell & Brett, 1988PASP..100.1134B) have been computed from synthetic spectra from new model atmospheres of Kurucz (1995a, priv. comm.), Castelli (1997, priv. comm.), Plez, Brett & Nordlund (1992A&A...256..551P), Plez (1995-97, priv. comm.), and Brett (1995A&A...295..736B, 1995A&AS..109..263B). These atmospheres are representative of larger grids that are currently being completed. We discuss differences between the different grids and compare theoretical color-temperature relations and the fundamental color temperature relations derived from: (a) the infrared-flux method (IRFM) for A-K stars (Blackwell & Lynas-Gray 1994A&A...282..899B; Alonso et al. 1996A&AS..117..227A) and M dwarfs (Tsuji et al. 1996A&A...305L...1T); (b) lunar occultations (Ridgway et al. 1980ApJ...235..126R) and (c) Michelson interferometry (Di Benedetto & Rabbia 1987A&A...188..114D; Dyck et al. 1996AJ....111.1705D; Perrin et al. 1998A&A...331..619P) for K-M giants, and (d) eclipsing binaries for M dwarfs. We also compare color-color relations and color-bolometric correction relations and find good agreement except for a few colors. The more realistic fluxes and spectra of the new model grids should enable accurate population synthesis models to be derived and permit the ready calibration of non-standard photometric passbands. As well, the theoretical bolometric corrections and temperature-color relations will permit reliable transformation from observed color magnitude diagrams to theoretical HR diagrams. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 82 224 Color indices and bolometric corrections from ATLAS9 overshoot models (Kurucz, 1995a, priv. comm.) table2.dat 81 224 Color indices and bolometric corrections from ATLAS9 no-overshoot models (Castelli, 1997, priv. comm.) table3.dat 82 252 Color indices and bolometric corrections from ATLAS9 models for Teff≥9000K (Kurucz, 1993) table4.dat 71 93 Color indices and bolometric corrections from NMARCS giant branch models of Plez, Brett and Nordlund (1992A&A...256..551P) table5.dat 74 186 Color indices and bolometric corrections from NMARCS giant branch models of Plez (1995, priv. comm.). table6.dat 74 76 Color indices and bolometric corrections from NMARCS M dwarf models of Plez (1997, priv. comm.)* and Brett (1995A&A...295..736B and 1995A&AS..109..263B)
See also: VI/39 : Model Atmospheres (Kurucz, 1979) Byte-by-byte Description of file: table1.dat table2.dat table3.dat
Bytes Format Units Label Explanations
1- 5 I5 K Teff Effective temperature 7- 10 F4.2 [cm/s2] logg Surface gravity 12- 16 F5.2 mag BC(K) Bolometric correction in Kmag 18- 22 F5.2 mag BC(V) Bolometric correction in Vmag 24- 29 F6.3 mag U-B U-B colour index 31- 36 F6.3 mag B-V B-V colour index 38- 43 F6.3 mag V-R V-R colour index 45- 50 F6.3 mag V-I V-I colour index 52- 57 F6.3 mag V-K V-K colour index 59- 64 F6.3 mag J-H J-H colour index 66- 71 F6.3 mag J-K J-K colour index 73- 78 F6.3 mag K-L K-L colour index
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 4 I4 K Teff Effective temperature 6- 10 F5.2 [cm/s2] logg Surface gravity 12- 15 F4.2 solMass Mass Mass 17- 20 F4.2 mag BC(K) Bolometric correction in Kmag 22- 26 F5.2 mag BC(V) Bolometric correction in Vmag 28- 32 F5.3 mag B-V B-V colour index 34- 38 F5.3 mag V-R V-R colour index 40- 44 F5.3 mag V-I V-I colour index 46- 50 F5.3 mag V-K V-K colour index 52- 56 F5.3 mag J-H J-H colour index 58- 62 F5.3 mag J-K J-K colour index 64- 68 F5.3 mag K-L K-L colour index
Byte-by-byte Description of file: table5.dat table6.dat
Bytes Format Units Label Explanations
1- 4 I4 K Teff Effective temperature 5 A1 --- Note [*] *: Plez 1997 (priv. comm.) data in table6.dat 6- 10 F5.2 [cm/s2] logg Surface gravity 12- 16 F5.2 Sun [Fe/H] Metallicity 18- 21 F4.2 mag BC(K) Bolometric correction in Kmag 23- 27 F5.2 mag BC(V) Bolometric correction in Vmag 29- 33 F5.3 mag B-V ? B-V colour index 35- 39 F5.3 mag V-R V-R colour index 41- 45 F5.3 mag V-I V-I colour index 47- 52 F6.3 mag V-K V-K colour index 54- 58 F5.3 mag J-H J-H colour index 60- 64 F5.3 mag J-K J-K colour index 66- 70 F5.3 mag K-L K-L colour index
Acknowledgements: Fiorella Castelli References: Kurucz, R.L. 1993, "ATLAS9 Stellar Atmosphere Programs and 2 km/s grid", CD-ROM No 13
(End) Patricia Bauer [CDS] 05-Mar-1998
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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