J/AN/326/321 Absolute magnitudes for late-type dwarfs (Bilir+, 2005)
Absolute magnitudes for late-type dwarf stars for Sloan photometry.
Bilir S., Karaali S., Tuncel S.
<Astronomische Nachrichten, 326, 321-331 (2005)>
=2005AN....326..321B 2005AN....326..321B
ADC_Keywords: Stars, late-type ; Photometry, ugriz ; Photometry, UBVRI ;
Photometry, Cousins ; Magnitudes, absolute
Keywords: techniques: Sloan photometry - stars: distances -
stars: luminosity function
Abstract:
We present a new formula for absolute magnitude determination for
late-type dwarf stars as a function of (g-r) and (r-i) for Sloan
photometry (as defined by Abazajian et al., 2003AJ....126.2081A 2003AJ....126.2081A). The
absolute magnitudes estimated by this approach are brighter than those
estimated by colour-magnitude diagrams, and they reduce the luminosity
function rather close to the luminosity function of Hipparcos.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 144 307 Sloan and UBV data for standard stars
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
http://www.sdss.org/ : the SDSS home page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name Star name
14- 15 I2 h RAh Right ascension (J2000.0)
17- 18 I2 min RAm Right ascension (J2000.0)
20- 21 I2 s RAs Right ascension (J2000.0)
23 A1 --- DE- Declination sign (J2000.0)
24- 25 I2 deg DEd Declination (J2000.0)
27- 28 I2 arcmin DEm Declination (J2000.0)
30- 31 I2 arcsec DEs Declination (J2000.0)
33- 38 F6.3 mag gmag g magnitude
40- 44 F5.3 mag e_gmag mean error of g magnitude
46- 50 F5.3 mag u-g u-g colour
52- 56 F5.3 mag e_u-g mean error of u-g colour
58- 63 F6.3 mag g-r g-r colour
65- 69 F5.3 mag e_g-r mean error of g-r colour
71- 76 F6.3 mag r-i r-i colour
78- 82 F5.3 mag e_r-i mean error of r-i colour
84- 89 F6.3 mag Vmag V magnitude
91- 95 F5.3 mag e_Vmag ? mean error of V magnitude
97-102 F6.3 mag U-B U-B colour
104-108 F5.3 mag e_U-B ? mean error of U-B colour
110-115 F6.3 mag B-V B-V colour
117-121 F5.3 mag e_B-V ? mean error of B-V colour
123-128 F6.3 mag Rc-Ic Cousins R-I colour
130-134 F5.3 mag e_Rc-Ic ? mean error of Rc-Ic colour
136 I1 --- r_Name [1/2] References for standard star (1)
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Note (1): References for standard star as follows:
1 = Smith et al. (2002AJ....123.2121S 2002AJ....123.2121S)
2 = Cambridge Astronomical Institute, http://www.ast.cam.ac.uk/~wfcsur/
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Acknowledgements: Selcuk Bilir, selcukbilir71(at)hotmail.com
(End) Patricia Vannier [CDS] 15-Jul-2005