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J/A+A/403/993    Revised HIP periods for long-period variables    (Knapp+, 2003)

Reprocessing the Hipparcos data of evolved stars. III. Revised Hipparcos period-luminosity relationship for galactic long-period variable stars. Knapp G.R., Pourbaix D., Platais I., Jorissen A. <Astron. Astrophys. 403, 993 (2003)> =2003A&A...403..993K
ADC_Keywords: Stars, late-type ; Stars, variable ; Parallaxes, trigonometric Keywords: stars: carbon - stars: AGB and post-AGB - stars: oscillations Abstract: We analyse the K-band luminosities of a sample of galactic long-period variables using parallaxes measured by the Hipparcos mission. The parallaxes are in most cases re-computed from the Hipparcos Intermediate Astrometric Data using improved astrometric fits and chromaticity corrections. The K band magnitudes are taken from the literature and from measurements by COBE, and are corrected for interstellar and circumstellar extinction. The sample contains stars of several spectral types: M, S and C, and of several variability classes: Mira, semiregular SRa, and SRb. We find that the distribution of stars in the period-luminosity plane is independent of circumstellar chemistry, but that the different variability types have different P-L distributions. Both the Mira variables and the SRb variables have reasonably well-defined period-luminosity relationships, but with very different slopes. The SRa variables are distributed between the two classes, suggesting that they are a mixture of Miras and SRb, rather than a separate class of stars. New period-luminosity relationships are derived based on our revised Hipparcos parallaxes. The Miras show a similar period-luminosity relationship to that found for Large Magellanic Cloud Miras by Feast et al. (1989MNRAS.241..375F). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 64 268 Stars for which a new solution based on the Hipparcos observations was derived
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- 6 I6 --- HIP Hipparcos (Cat. I/239) Catalogue number 9- 19 A11 --- GCVS GCVS variable star name or Bayer name 21- 26 F6.2 mas plx Revised parallax 28- 31 F4.2 mas e_plx standard error on the revised parallax 33- 39 F7.2 --- Dplx Difference of parallax (plx - plxHIP)/e_plxHIP (1) 41- 45 F5.2 mag AK Circumstellar+interstellar absorption in K (2) 47- 51 F5.2 mag Kmag Apparent K (2.2µm) magnitude 53- 58 F6.2 d Per Period 60- 62 A3 --- Var Variability type from GCVS (Cat. II/214) 64 A1 --- Chem [COS] Carbon/oxygen chemistry of the atmosphere
Note (1): diff=(plx-plxHIP)/e_plxHIP is the difference between the revised parallax and the published one reckoned in units of the standard error in the Hipparcos (Cat. I/239) parallax. Note (2): AK is the total interstellar and circumstellar extinction in the K band (see text of the paper).
History: 01-Sep-2003: For HIP 28166 : BO Ori corrected into BQ Ori Acknowledgements: Dimitri Pourbaix References: Pourbaix and Jorissen, Paper I 2000A&AS..145..161P Knapp et al., Paper II 2001A&A...371..222K
(End) Patricia Bauer [CDS] 01-Apr-2003
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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