J/A+AS/119/547 J/A+AS/119/547 IR photometry of ESO calibration stars N S Van der Bliek J Manfroid P Bouchet Astron. Astrophys. Suppl. Ser. 119 547 1996 1996A&AS..119..547V Infrared sources Photometry, infrared infrared: stars instrumentation: photometers techniques: photometric We describe the infrared (IR) photometric system for the single channel photometers at ESO, which have been used from 1983 until 1994. In addition to the broadband near infrared (NIR, 1-5{mu}m) photometric system presented in 1991 by Bouchet et al. and Bersanelli et al., we describe a narrow-band NIR photometric system and a mid infrared (MIR, 7-20{mu}m) photometric system. We also extend the set of NIR standard stars by Bouchet et al. towards fainter objects (K=~9). The photometric data of the standard stars in these systems were extracted from the complete IR photometric data archive of ESO, covering 10 years. The zeropoints of the NIR photometry are set by assuming that HR 3314 has a V-magnitude of 3.89, and that V-K=-0.05, J-K=-0.01, H-K=-0.01, K-L'=0.00, K-M=0.00. The zeropoints of the MIR photometry are set by assuming that the colours of{beta} Hyi (HR 0098) and {alpha} CenA (HR 5459) are equal to the colours of the Sun. We adopt the absolute calibration of Megessier (1995A&A...296..771M) for the NIR and we argue that this calibration can be extrapolated to 20{mu}m, using the MIR calibrations by Rieke et al. (1985AJ.....90..900R) and Cohen et al. (1992AJ....104.1650C). The definition of the zeropoints is consistent with the absolute calibration. We obtained accurate ({sigma}=~0.02mag.) NIR photometry of about 240 standard stars and MIR photometry of about 40 standard stars ({sigma}=~0.04mag). Comparison of our NIR photometric system with other well established systems shows that there are some small colour dependencies and zeropoint offsets which are always smaller than about 0.02mag. except for the L' band.

Name Star designation --- RAh Right Ascension 2000 (hours) h RAm Right Ascension 2000 (minutes) min RAs Right Ascension 2000 (seconds) s DE- Declination 2000 (sign) --- DEd Declination 2000 (degrees) deg DEm Declination 2000 (minutes) arcmin DEs Declination 2000 (seconds) arcsec Sp Spectral Type & Luminosity Class --- Jmag J magnitude (1.24 microns) mag e_Jmag Standard deviation of Jmag mag o_Jmag Number of observations in Jmag --- Hmag H magnitude (1.63 microns) mag e_Hmag Standard deviation of Hmag mag o_Hmag Number of observations in Hmag --- Kmag K magnitude (2.19 microns) mag e_Kmag Standard deviation of Kmag mag o_Kmag Number of observations in Kmag --- L'mag L' magnitude (3.79 microns) mag e_L'mag Standard deviation of L'mag mag o_L'mag Number of observations in L'mag --- Mmag M magnitude (4.64 microns) mag e_Mmag Standard deviation of Mmag mag o_Mmag Number of observations in Mmag --- Name Star designation --- RAh Right Ascension 2000 (hours) h RAm Right Ascension 2000 (minutes) min RAs Right Ascension 2000 (seconds) s DE- Declination 2000 (sign) --- DEd Declination 2000 (degrees) deg DEm Declination 2000 (minutes) arcmin DEs Declination 2000 (seconds) arcsec Sp Spectral Type & Luminosity Class --- H0 H_0 magnitude (1.58 microns) mag e_H0 Standard deviation of H_0 mag o_H0 Number of observations in H_0 --- BrGamma Br_gamma magnitude (2.16 microns) mag e_BrGamma Standard deviation of Br_gamma mag o_BrGamma Number of observations in Br_gamma --- K0 K_0 magnitude (2.22 microns) mag e_K0 Standard deviation of K_0 mag o_K0 Number of observations in K_0 --- CO CO magnitude (2.29 microns) mag e_CO Standard deviation of CO mag o_CO Number of observations in CO --- L0 L_0 magnitude (3.70 microns) mag e_L0 Standard deviation of L_0 mag o_L0 Number of observations in L_0 --- Name Star designation --- RAh Right Ascension 2000 (hours) h RAm Right Ascension 2000 (minutes) min RAs Right Ascension 2000 (seconds) s DE- Declination 2000 (sign) --- DEd Declination 2000 (degrees) deg DEm Declination 2000 (minutes) arcmin DEs Declination 2000 (seconds) arcsec Sp Spectral Type & Luminosity Class --- Nmag N magnitude (10.36 microns) mag e_Nmag Standard deviation of Nmag mag o_Nmag Number of observations in Nmag --- N1 N1 magnitude (8.38 microns) mag e_N1 Standard deviation of N1 mag o_N1 Number of observations in N1 --- N2 N2 magnitude (9.69 microns) mag e_N2 Standard deviation of N2 mag o_N2 Number of observations in N2 --- N3 N3 magnitude (12.89 microns) mag e_N3 Standard deviation of N3 mag o_N3 Number of observations in N3 --- Q0 Q0 magnitude (18.06 microns) mag e_Q0 Standard deviation of Q0 mag o_Q0 Number of observations in Q0 --- Patricia Bauer CDS 1996Apr02Nicole van der Bliek <nvdbliek@regge.strw.LeidenUniv.nl> J_A+AS_119_547.xml