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J/MNRAS/419/1637    Nearby red clump stars JHK observations  (Laney+, 2012)

A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars. Laney C.D., Joner M.D., Pietrzynski G. <Mon. Not. R. Astron. Soc., 419, 1637-1641 (2012)> =2012MNRAS.419.1637L
ADC_Keywords: Stars, nearby ; Photometry, infrared Keywords: stars: variables: Cepheids - Magellanic Clouds - distance scale - infrared: stars Abstract: High-precision (σmag<0.10) new JHK observations of 226 of the brightest and nearest red clump stars in the solar neighbourhood are used to determine distance moduli for the Large Magellanic Cloud (LMC). The resulting K- and H-band values of 18.47±0.02 and 18.49±0.06 imply that any correction to the K-band Cepheid PL relation due to metallicity differences between Cepheids in the LMC and the solar neighbourhood must be quite small. Description: JHK observations for 226 nearby red clump stars with K magnitudes between -0.3 and 4.9 were obtained with the 0.75-m telescope at the South African Astronomical Observatory (SAAO), using the Mk II infrared photometer and the same filter set used to define the SAAO JHKL standard system. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 61 224 Magnitudes and absolute magnitudes on the 2MASS system for nearby Hipparcos red clump stars
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1 A1 --- n_HIP [*] *: Star not used in calculating mean absolute magnitudes (see text) 2- 7 I6 --- HIP HIP (Cat. I/239) star number 9- 13 F5.3 mag Jmag Apparent 2MASS J magnitude 15- 20 F6.3 mag Hmag Apparent 2MASS H magnitude 22- 27 F6.3 mag Kmag Apparent 2MASS Ks magnitude 29- 33 F5.2 mas plx HIP parallax 35- 38 F4.2 mas e_plx rms uncertainty on plx 40- 41 I2 --- Type Number of parameters for HIP parallax fit 43- 48 F6.3 mag HMAG Absolute H magnitude 50- 55 F6.3 mag KMAG Absolute K magnitude 57- 61 F5.2 --- [M/H] ? Metallicity [M/H] on the scale of Liu et al. (2007, Cat. J/MNRAS.382/553)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 18-Jun-2012
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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