UKIRT BRIGHT STANDARDS

Back - Revised list MMC 3/3/92 
  The magnitudes in this list have been revised following 1990/91 UKT9
  photometry. Asterisks refer to the most frequently re-observed stars. 
  The results define the UKIRT/UKT9 natural photometric system. The K 
  zeropoint is defined as identical to that of the CIT (Elias) system for 
  A0 stars. Transformations to CIT are given in the appendix.
NameRA 1950 DEC K J-K H-K MK
*HD 225023 0 0 11.8 35 32 14.0 6.962 0.120 0.031 A0
*G158-27 0 4 12.0 -7 47 54.0 7.447 0.931 0.334 M5
*BS 33 0 8 43.2 -15 44 32.0 3.636 0.328 0.053 F7V
*HD 1160 0 13 23.1 3 58 24.0 7.040 0.020 0.011 A0
HD 2811 0 28 53.0 -43 52 58.0 7.067 0.111 0.026 A2
HD 3029 0 31 2.3 20 9 30.0 7.093 0.170 0.032 A3
BS 337 1 6 55.5 35 21 22.0 -1.853 0.945 0.150 M0III
BS 696 2 21 43.1 56 23 4.0 5.443 0.144 0.056 B2Iae
*BS 718 2 25 29.8 8 14 13.0 4.390 -0.016 0.000 B9III
BS 739 2 29 36.6 -1 15 17.0 3.121 0.627 0.097 gG3
BS 740 2 29 43.0 -15 27 48.0 3.585 0.294 0.038 F4IV
*GL 105.5 2 38 7.6 0 58 57.0 6.539 0.766 0.124 M0
BS 816 2 42 43.4 4 30 8.0 5.353 0.149 0.031 gF0
HD 18881 3 0 20.5 38 12 53.0 7.140 -0.010 -0.005 A0
HD 19904 3 8 49.1 -39 14 24.0 6.642 0.085 0.020 A2
G77-31 3 10 40.5 4 35 12.0 7.857 0.959 0.330 M4?
*HD 22686 3 36 18.7 2 36 7.0 7.185 0.011 0.005 A0
BS 1140 3 41 49.5 24 8 1.0 5.510 0.010 -0.010 B7IV
BS 1457 4 33 2.9 16 24 37.0 -2.783 0.935 0.169 K5III
BS 1543 4 47 7.4 6 52 32.0 2.095 0.258 0.022 F6V
BS 1552 4 48 32.4 5 31 16.0 4.138 -0.109 -0.051 B2III
BS 1641 5 3 0.2 41 10 8.0 3.677 -0.159 -0.031 B7V
BS 1637 5 6 40.6 51 35 52.0 4.153 0.159 0.051 F0V
BS 1713 5 12 8.0 -8 15 29.0 0.211 0.029 0.030 B8Iae
BS 1708 5 12 59.5 45 56 58.0 -1.802 0.468 0.085 G4III
SAO112626 5 16 41.4 1 39 15.0 8.596 0.338 0.074 F8
BS 1869 5 36 15.9 47 42 56.0 5.393 0.139 0.061 dF0
HD 38921 5 45 41.0 -38 14 51.0 7.536 0.036 0.015 A0
*HD 40335 5 55 37.6 1 51 9.0 6.452 0.103 0.021 A0
BS 2228 6 17 34.6 46 25 57.0 5.892 0.120 0.051 F0V
*HD 44612 6 21 9.7 43 34 35.0 7.041 0.034 0.000 A0
BS 2491 6 42 56.7 -16 38 46.0 -1.320 0.020 0.001 A1V
*BD+0 1694 6 52 7.3 0 0 52.0 4.606 1.144 0.251 ?
BS 2721 7 12 7.6 47 19 51.0 4.126 0.349 0.054 G0V
BS 2943 7 36 41.1 5 21 16.0 -0.646 0.209 0.082 F5IV
BS 2990 7 42 15.6 28 8 55.0 -1.050 0.527 0.075 K0IIIb
BS 3314 8 23 9.7 -3 44 31.0 3.940 -0.020 -0.021 A0V
HD 75223 8 45 29.8 -39 36 54.0 7.281 0.048 0.015 A0
*HD 77281 8 59 5.4 -1 16 45.0 7.031 0.080 0.021 A2
*GL 347A 9 26 25.0 -7 8 30.0 7.658 0.825 0.223 M3.5
*HD 84800 9 45 35.9 43 53 56.0 7.538 0.054 0.011 A2
BS 3888 9 47 27.1 59 16 30.0 2.983 0.179 0.022 F2IV
BS 3903 9 49 4.3 -14 36 40.0 2.050 0.567 0.086 G7III
V 569 10 9 46.3 -3 29 41.0 5.106 0.886 0.204 M3
BS 4069 10 19 21.5 41 45 6.0 -0.803 0.935 0.149 M0III
GL 390 10 22 44.0 -9 58 36.0 6.061 0.878 0.214 M1.5
GL 406 10 54 6.0 7 19 12.0 6.099 1.044 0.370 M6
BS 4358 11 11 25.9 8 20 5.0 3.202 0.677 0.097 K3III
HD101452 11 37 45.1 -38 52 9.0 6.848 0.170 0.042 A2
Y 2730 11 45 8.2 1 5 56.0 5.646 0.886 0.289 dM4.5
BS 4550 11 50 6.2 38 4 39.0 4.400 0.557 0.066 G8V
HD105601 12 6 56.1 38 54 39.0 6.687 0.134 0.032 A2
*HD106965 12 15 24.0 1 51 10.0 7.316 0.064 0.021 A2
*BS 4689 12 17 20.8 0 23 21.0 3.781 0.029 0.000 A2IV
BS 4935 13 1 5.1 -20 18 55.0 4.266 0.338 0.024 F7V
BS 4983 13 9 32.5 28 7 52.0 2.886 0.308 0.043 G0V
BS 5340 14 13 22.8 19 26 31.0 -2.976 0.776 0.098 K1IIb
*BS 5447 14 32 30.2 29 57 41.0 3.489 0.234 0.033 F2V
HD129653 14 40 38.2 36 58 7.0 6.921 0.064 0.021 A2
*HD129655 14 41 11.0 -2 17 38.0 6.692 0.134 0.032 A2
HD130163 14 44 36.2 -39 43 4.0 6.835 0.021 0.011 A0
BD+3 2954 14 52 23.2 3 11 33.0 4.825 1.101 0.201 M0
BS 5685 15 14 18.7 -9 11 59.0 2.799 -0.040 -0.010 B8V
*HD136754 15 19 24.3 24 31 19.0 7.135 0.020 0.011 A0
*BD+2 2957 15 22 29.0 1 41 6.0 4.263 1.017 0.191 K2
BS 6084 B 16 18 8.7 -25 28 29.0 2.421 0.070 0.021 B2II+O9V
*BS 6092 16 18 14.1 46 25 54.0 4.298 -0.106 -0.041 A9III
S-R 3 16 23 7.7 -24 27 26.0 6.543 1.261 0.458 ?
OPH S1 16 23 32.8 -24 16 44.0 6.378 2.629 0.966 ?
BS 6136 16 26 0.9 0 46 32.0 2.036 0.862 0.148 K4III
BS 6147 16 28 16.4 -16 30 19.0 2.269 0.498 0.065 G8IIIa
BS 6406 17 12 22.0 14 26 45.0 -3.351 1.075 0.241 M5Ib
HD161743 17 45 31.8 -38 6 11.0 7.615 0.005 0.005 A0
*HD161903 17 45 43.3 -1 47 34.0 7.023 0.149 0.036 A2
*HD162208 17 46 20.7 39 59 40.0 7.112 0.111 0.029 A0
BS 6707 17 56 35.3 30 11 32.0 3.210 0.260 0.042 F2II
*Y 4338 18 46 44.1 -23 53 32.0 5.416 0.881 0.264 dM4.5e
BS 7120 18 52 5.8 -22 44 8.0 2.033 0.706 0.087 K3II
*GL 748 19 9 38.0 2 48 36.0 6.319 0.786 0.238 dM4
BS 7615 19 54 25.7 34 56 58.0 1.640 0.559 0.076 K0III
*BS 7773 20 17 53.5 -12 55 4.0 4.859 -0.034 0.000 B9.5V
*GL 811.1 20 54 4.0 -10 37 36.0 6.946 0.886 0.239 dM4
*HD201941 21 10 13.6 2 26 12.0 6.626 0.070 0.031 A2
BS 8143 21 15 27.0 39 11 4.0 3.797 0.089 0.041 B9Iab
*HD203856 21 21 37.1 39 48 12.0 6.861 0.065 0.026 A0
HD205772 21 35 33.6 -41 16 26.0 7.657 0.118 0.031 A3
SAO34401 22 21 47.7 54 57 12.0 7.734 0.199 0.032 F0
*BS 8541 22 22 29.0 49 13 21.0 4.235 0.070 0.032 B9Iab
BS 8551 22 25 19.6 4 26 39.0 2.312 0.644 0.066 K0III
*Y 5546 22 50 36.2 -14 31 34.0 5.066 0.914 0.278 dM5 
                  Appendix
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TRANSFORMATION RULES FROM UKIRT (UKT9) TO CIT (Caltech)

The CIT system is taken as that defined by Elias et al (1982, A.J. 
87,1029). The UKIRT system is that defined by the UKIRT standards list, 
observed by UKT9.

   Transformation equations are

         Kcit = Kukirt - 0.018*(J-K)
   ( J-K )cit = 0.936 * ( J-K )ukirt
   ( H-K )cit = 0.960 * ( H-K )ukirt
   ( J-H )cit = 0.920 * ( J-H )ukirt
   ( K-L )cit = 0.820 * ( K-L )ukirt


   Although IRCAM has a different filter set to that of UKT9, no 
significant systematic differences have been found between IRCAM photometry 
and the UKIRT system out to a J-K colour of ~ 1 (Longmore, Priv. Comm). So 
IRCAM can be considered to be on the UKIRT system for this colour range.