J/MNRAS/373/781 JHK photometry of faint standard stars (Leggett+, 2006)
JHK observations of faint standard stars in the Mauna Kea Observatories
near-infrared photometric system.
Leggett S.K., Currie M.J., Varricatt W.P., Hawarden T.G., Adamson A.J.,
Buckle J., Carroll T., Davies J.K., Davis C.J., Kerr T.H., Kuhn O.P.,
Seigar M.S., Wold T.
<Mon. Not. R. Astron. Soc., 373, 781-792 (2006)>
=2006MNRAS.373..781L 2006MNRAS.373..781L
ADC_Keywords: Stars, faint ; Photometry, infrared
Keywords: instrumentation: photometers - methods: observational -
techniques: photometric - infrared: stars
Abstract:
JHK photometry in the Mauna Kea Observatories (MKO) near-infrared
system is presented for 115 stars. Of these stars, 79 are United
Kingdom Infrared Telescope (UKIRT) standards from Hawarden et al.
(2001MNRAS.325..563H 2001MNRAS.325..563H), and 42 are Las Campanas Observatory (LCO, or
NICMOS) standards from Persson et al. The average brightness of the
sample in all three bandpasses is 11.5mag, with a range between 10 and
15. The average number of nights each star was observed is 4, and the
average of the internal error of the final results is 0.011mag. These
JHK data agree with those reported by other groups to 0.02mag, for
stars in common, which is consistent with the uncertainties. The
measurements are used to derive colour transformations between the MKO
JHK photometric system and the UKIRT, LCO and Two Micron All-Sky
Survey (2MASS) systems.
Description:
The sample consists primarily of UKIRT Faint Standards (Hawarden et
al., 2001MNRAS.325..563H 2001MNRAS.325..563H) and Las Campanas (LCO, or NICMOS) standards
(Persson et al., 1998AJ....116.2475P 1998AJ....116.2475P).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 74 115 Standard stars
refs.dat 122 28 References
table3.dat 68 115 Measured MKO JHK magnitudes
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- FS ?=- UKIRT FS number
5- 21 A17 --- Name Name
23- 24 I2 h RAh Right ascension (J2000)
26- 27 I2 min RAm Right ascension (J2000)
29- 32 F4.1 s RAs Right ascension (J2000)
34 A1 --- DE- Declination sign (J2000)
35- 36 I2 deg DEd Declination (J2000)
38- 39 I2 arcmin DEm Declination (J2000)
41- 42 I2 arcsec DEs Declination (J2000)
44- 51 F8.2 mas/yr pmRA ?=- Proper motion along RA
52- 59 F8.2 mas/yr pmDE ?=- Proper motion along DE
60- 61 I2 --- r_pm ?=- Proper motion reference, in refs.dat file
63- 70 A8 --- SpType MK spectral type
71 A1 --- n_SpType [a] Photometrically estimated SpType (1)
73- 74 I2 --- r_SpType ?=- Spectral type reference, in refs.dat file
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Note (1): 'a' indicates a Spectral type estimated from B-V and V-K colors,
either from Guide Star Photometric Catalog (Lasker et al. 1988,
Cat. II/143) or from this work.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 43 A20 --- Aut Author's name
45-122 A78 --- Com Comments
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- FS ?=- UKIRT FS number
5- 21 A17 --- Name Name
23- 28 F6.3 mag Jmag MKO J magnitude
30- 34 F5.3 mag e_Jmag rms uncertainty on Jmag
36 I1 --- o_Jmag Number of nights of Jmag observations
38- 43 F6.3 mag Hmag MKO H magnitude
45- 49 F5.3 mag e_Hmag rms uncertainty on Hmag
51 I1 --- o_Hmag Number of nights of Hmag observations
53- 58 F6.3 mag Kmag MKO K magnitude
60- 64 F5.3 mag e_Kmag rms uncertainty on Kmag
66 I1 --- o_Kmag Number of nights of Kmag observations
68 I1 --- Notes ? Remark about possible uncertainties (1)
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Note (1): Remark numbered as follows:
1 = JHK may be too bright by <0.02 mag due to non-linearity underestimate.
2 = K may be too bright by <0.02mag due to non-linearity underestimate.
3 = May be variable at J by ∼0.1mag over a period of years.
4 = May be variable at JHK by 0.05-0.10mag over a period of months
to years.
5 = J may be too bright by <0.02 mag due to non-linearity underestimate.
6 = HK may be too bright by <0.02mag due to non-linearity underestimate.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 14-Aug-2007