J/A+A/595/A59 Observational properties of Hipparcos stars (Maedler+, 2016)
Stellar twins measure the distance of the Pleiades.
Maedler T., Jofre P., Gilmore G., C Worley C., Soubiran C.,
Blanco-Cuaresma S., Hawkins K., Casey A.R.
<Astron. Astrophys. 595, A59 (2016)>
=2016A&A...595A..59M 2016A&A...595A..59M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Parallaxes, trigonometric ; Photometry, infrared
Keywords: stars: distances - stars: solar-type - parallaxes
Abstract:
Since the release of the Hipparcos catalogue in 1997, the distance to
the Pleiades open cluster has been heavily debated. The distance
obtained from Hipparcos and those by alternative methods differ by 10
to 15%. As accurate stellar distances are key to understanding stellar
structure and evolution, this dilemma puts the validity of some
stellar evolution models into question. Using our model-independent
method to determine parallaxes based on twin stars, we report
individual parallaxes of 15 FGK type stars in the Pleiades in
anticipation of the astrometric mission Gaia. These parallaxes give a
mean cluster parallax of 7.42±0.09mas,which corresponds to a mean
cluster distance of 134.8±1.7pc. This value agrees with the
current results obtained from stellar evolution models.
Description:
Basic observational properties (coordinates, parallax, photometry, S/N,
program ID) of Hipparcos stars used in the determination of the twin
distance of the Pleiades stars.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 115 807 Observational properties of Hipparcos stars
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See also:
I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)
I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
Byte-by-byte Description of file (#): tablea1.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [HIP]
5- 10 I6 --- HIP Hipparcos number
13- 24 F12.8 deg RAdeg Right ascension (J2000)
27- 38 F12.8 deg DEdeg Declination (J2000)
41- 45 F5.2 mag Hmag 2MASS apparent magnitude in H band
50- 54 F5.2 mag Ksmag 2MASS apparent magnitude in Ks band
58- 63 F6.2 mas plx Hipparcos parallax
68- 72 F5.2 mas e_plx Error of Hipparcos parallax
76- 81 F6.2 --- SNR Signal to noise ratio
84- 93 A10 "date" Obs.date Observation date
97-109 A13 --- ProgramID ESO observing program ID
113-115 A3 --- photoFlag 2MASS photometry quality flag
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Acknowledgements:
Thomas Maedler, tm513(at)cam.ac.uk
Institute of Astronomy, University of Cambridge
(End) Thomas Maedler [Cambridge Univ.], Patricia Vannier [CDS] 02-Aug-2016