II/303 UBVRI observations of FKSZ stars (Carrasco+ 1986-1997) ================================================================================ UBVRI photometry of FK4 and FK4 supplement stars Carrasco G., Loyola P., Moreno H., Ledoux C. =2010yCat.2303....0C =1986A&AS...65...33M =1987A&AS...70..369C =1988A&AS...76....1C =1990A&AS...82..553C =1993A&AS..100..489C =1997A&AS..126..311C ================================================================================ ADC_Keywords: Photometry, UBVRI ; Stars, fundamental Keywords: photometry ; fundamental stars Description (from B. Skiff): In a series of papers in the A&A Supplements, Carrasco et al. provide very good UBVRI data for about 1000 stars. The stars are variously identified in the source papers, and are variously integrated into the General Catalog of Photometric Data (GCPD, see Cat. II/267). I have made a combined file showing HD numbers for the stars along with coordinates. The last two lists are available in VizieR (items J/A+AS/100/489 and J/A+AS/126/311). The GCPD shows all the papers, but for one it omits the VRI colors. The GCPD does usefully compute R-I colors, which are added here as well (Carrasco et al.give V-R and V-I). The stars are arranged in the order they appear in the papers, i.e. with the E-region standards first, then the general field stars. The authors calibrated their data consistently against Graham E-region standards. While adding the completed list to my comprehensive file, I noticed additional stars in common with the Cousins F-region standards, Landolt stars, and with GSPC stars (see Cat. II/272) observed in UBVRI at SAAO. These can all be considered as "pretty good" standards or secondary standards. The Carrasco data look especially good in this comparison, excepting the first paper with Moreno (1986A&AS...65...33M). File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file ubvri.dat 154 1244 UBVRI data with position -------------------------------------------------------------------------------- See also: II/118 : UBVRI standards around Celestial Equator (Landolt 1983) II/183 : UBVRI Photometric Standards (Landolt 1992) J/AJ/133/2502 : UBVRI Standard Stars (Landolt, 2007) J/A+AS/100/489 : UBVRI photometry of FKSZ stars (Carrasco+ 1993) J/A+AS/126/311 : UBVRI photometry of FK5 Ext. stars (Carrasco+ 1997) Byte-by-byte Description of file: ubvri.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 19 A19 --- Bibcode 19-digit bibcode of the publication 22- 33 A12 --- Name Star name 50- 51 I2 h RAh Right Ascension J2000 (hours) 53- 54 I2 min RAm Right Ascension J2000 (minutes) 56- 60 F5.2 s RAs Right Ascension J2000 (seconds) 62 A1 --- DE- Declination J2000 (sign) 63- 64 I2 deg DEd Declination J2000 (degrees) 66- 67 I2 arcmin DEm Declination J2000 (minutes) 69- 72 F4.1 arcsec DEs Declination J2000 (seconds) 74 A1 --- s [TU] Source of positionC: T=Tycho-2 (I/259), U=USNO-B1.0 (I/284) 78- 83 F6.3 mag Vmag V magnitude 85- 90 F6.3 mag B-V B-V colour index 92- 97 F6.3 mag U-B U-B colour index 99-104 F6.3 mag V-R V-R colour index 106-111 F6.3 mag R-I ? R-I color index 113-118 F6.3 mag V-I ? V-I color index 122-154 A33 --- Remarks Remarks, by B. Skiff -------------------------------------------------------------------------------- History: Prepared by Brian Skiff (Lowell Obs.) ================================================================================ (End) Brian Skiff [Lowell Obs.], Francois Ochsenbein [CDS] 28-Dec-2010