JMDC Column description
From JMDC readme:
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#-- II/345 JMDC : JMMC Measured Stellar Diameters Catalogue (Duvert, 2016)
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#---Table: II/345/jmdc.dat JMMC Measured stellar Diameters Catalog (as part of Chelli et al., 2016A&A...589A.112C) (1554 records)
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# Label Format Unit Explanations
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# ID1 A23 --- Normalised star name (preferably HD) (ID1)
# ID2 A20 --- Name used in the original publication (ID2)
# UDdiam E13.6 mas ?=-1 Uniform Disk Diameter (UD_MEAS)
# LDdiam E13.6 mas ?=-1 Limb-Darkened Disk diameter (LD_MEAS)
# e_LDdiam E13.6 mas ?=-1 Error on UDdiam and LDdiam (E_LD_MEAS) (1)
# Band A10 --- Text describing the wavelength or band
# of the measurement (BAND) (2)
# mu-lambda E13.6 --- ?=-1 When possible, value of the conversion
# UDD-to-LDD user by the author (ORIG_MU_LAMBDA)
# Method I1 --- Integer code of the method used (METHOD) (3)
# BandCode I3 --- ?=- Integer code of the band used
# (BANDCODE) (4)
# Notes A224 --- Note about the star and/or measurement (NOTES)
# BibCode A19 --- BibCode
# Com A59 --- Author's name and comments (REFERENCE)
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#Note (1): In general, quotes the published error on LDD or UDD, which are
# essentially equivalent. The blanking value of -1 can be due to an absence of
# published error, or has been fixed thus when the measurement is
# (retrospectively) in doubt, in which case an explanation lies in the Notes.
#Note (2): A loosely defined string representing the band (UBVRIJHKLMNQ) or the
# central wavelength, in microns if not otherwise precised, of the observation.
# A stands for Angstroem, nm for nanometer.
#Note (3): Code for the observational method used as follows:
# 1 = optical interferometry
# 2 = Lunar occultation
# 3 = intensity interferometry
#Note (4): Index from 1 (band U) and up through bands B,V,R,I,J,H,K,L,M,N,Q.