J/A+A/593/L18 Pseudomagnitude distances applied to the Pleiades (Chelli+, 2016)
Pseudomagnitude Distances: Application to the Pleiades cluster
Chelli A., Duvert G.
<Astron. Astrophys. 593, L18 (2016)>
=2016A&A...593L..18C 2016A&A...593L..18C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, distances ; Photometry
Keywords: stars: distances - methods: data analysis - methods: observational -
techniques: photometric
Abstract:
The concept of pseudomagnitude was recently introduced to estimate
apparent stellar diameters using a strictly observational methodology.
Pseudomagnitudes are distance indicators, which have the remarkable
property of being reddening free. In this study, we use Hipparcos
parallax measurements to compute the mean absolute pseudomagnitudes of
solar neighbourhood dwarf stars as a function of their spectral type.
To illustrate the use of absolute pseudomagnitudes, we derive the
distance moduli of 360 Pleiades stars and find that the centroid of
their distribution is 5.71±0.018, corresponding to a distance of
139.0±1.2pc. We locate the subset of ∼50 Pleiades stars observed by
Hipparcos at a mean distance of 135.5±3.7pc, thus confirming the
frequently reported anomaly in the Hipparcos measurements of these
stars.
Description:
Name, distance in pc and its error (pc) for 360 Pleiades members. The
names are those returned by CDS when searching for "M45". The 360
stars are those for which an estimate of distance using the
pseudomagnitude method was possible. For each star, the reported
PseudoMagnitude Distance (PMD) is the mean of the 3 distances obtained
from the pseudomagnitude pairs (V,J), (V,H) and (V,K). The error is
the dispersion of those distances.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 44 360 Names, distances and error for 360 stars in
Pleiades cluster
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See also:
I/90 : Positions of 502 Stars in Pleiades Region (Eichhorn+ 1970)
I/163 : US Naval Observatory Pleiades Catalog (Van Flandern 1969)
I/258 : Pleiades positions and proper motions (Wang+, 1996)
J/MNRAS/342/1241 : Low-mass stars in M45 and M44 (Pinfield+, 2003)
J/MNRAS/380/712 : ZYJHK photometry in Pleiades (Lodieu+, 2007)
J/MNRAS/422/1495 : UKIDSS Galactic Clusters Survey Pleiades members
(Lodieu+ 2012)
J/A+A/577/A148 : The Seven Sisters DANCe. I. Pleiades (Bouy+, 2015)
J/AJ/148/30 : BVI photometry of 350 Pleiades stars (Kamai+, 2014)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 28 A28 --- Name Star name
29- 35 F7.2 pc PMD Distance using pseudomagnitudes
40- 44 F5.2 pc e_PMD error on Distance
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Acknowledgements:
Gilles Duvert, gilles.duvert(at)univ-grenoble-alpes.fr
(End) Gilles Duvert [IPAG, OSUG, France], Patricia Vannier [CDS] 13-Sep-2016