======================================================================= The OGLE Collection of Variable Stars Classical Cepheids toward the Galactic bulge I. Soszynski, A. Udalski, M. K. Szymanski, L. Wyrzykowski, K. Ulaczyk, R. Poleski, P. Pietrukowicz, S. Kozlowski, D. M. Skowron, J. Skowron, P. Mroz, M. Pawlak, and A. Jacyszyn-Dobrzeniecka OGLE Collection of Galactic Cepheids A. Udalski, I. Soszynski, P. Pietrukowicz, M.K. Szymanski, D.M. Skowron, J. Skowron, P. Mroz, R. Poleski, S. Kozlowski, K. Ulaczyk, K. Rybicki, P. Iwanek and M. Wrona ======================================================================= soszynsk@astrouw.edu.pl udalski@astrouw.edu.pl This directory contains the OGLE collection of classical Cepheids toward the Galactic bulge. The directory structure is as follows: README - this file ident.dat - identification of stars cepF.dat - parameters of fundamental-mode (F) Cepheids cep1O.dat - parameters of first-overtone (1O) Cepheids cepF1O.dat - parameters of double-mode F/1O Cepheids cep1O2O.dat - parameters of double-mode 1O/2O Cepheids cep1O2O3O.dat - parameters of triple-mode 1O/2O/3O Cepheids phot/I/ - I-band photometry of individual objects phot/V/ - V-band photometry of individual objects phot.tar.gz - gzipped phot/ directory fcharts/ - finding charts of individual objects remarks.txt - remarks on selected objects pap1.pdf - PDF version of the paper Soszynski et al. (2017), Acta Astron. 67, 297 (arXiv:1712.01307), describing the collection. pap2.pdf - PDF version of the paper Udalski et al. (2018), Acta Astron. 68, 315 (arXiv:1810.09489), describing the extension of the collection to the outer Galactic bulge fields. pap3.pdf - PDF version of the paper Soszynski et al. (2020), Acta Astron. 70, 101 (arXiv:2007.07255), describing the extension of the collection. Format of the file ident.dat: -------------------------------------------------------------------------- Bytes Format Units Description -------------------------------------------------------------------------- 1- 16 A16 --- Star's ID 18- 25 A8 --- Mode(s) of pulsation 28- 29 I2 h Right ascension, equinox J2000.0 (hours) 31- 32 I2 m Right ascension, equinox J2000.0 (minutes) 34- 38 F5.2 s Right ascension, equinox J2000.0 (seconds) 40 A1 --- Declination, equinox J2000.0 (sign) 41- 42 I2 deg Declination, equinox J2000.0 (degrees) 44- 45 I2 arcmin Declination, equinox J2000.0 (arc minutes) 47- 50 F4.1 arcsec Declination, equinox J2000.0 (arc seconds) 53- 68 A16 --- OGLE-IV ID 70- 84 A15 --- OGLE-III ID 86-100 A15 --- OGLE-II ID 102- A --- Other designation (from VSX) -------------------------------------------------------------------------- Format of the files cepF.dat and cep1O.dat: -------------------------------------------------------------------------- Bytes Format Units Description -------------------------------------------------------------------------- 1- 16 A16 --- Star's ID 19- 24 F6.3 mag Intensity mean I-band magnitude 26- 31 F6.3 mag Intensity mean V-band magnitude 34- 43 F10.7 days Period 45- 53 F9.7 days Uncertainty of period 56- 65 F10.5 days Time of maximum brightness (HJD-2450000) 68- 72 F5.3 mag I-band amplitude (maximum-minimum) 75- 79 F5.3 --- Fourier coefficient R_21 81- 85 F5.3 --- Fourier coefficient phi_21 88- 92 F5.3 --- Fourier coefficient R_31 94- 98 F5.3 --- Fourier coefficient phi_31 -------------------------------------------------------------------------- Format of the files cepF1O.dat and cep1O2O.dat: -------------------------------------------------------------------------- Bytes Format Units Description -------------------------------------------------------------------------- 1- 16 A16 --- Star's ID 19- 24 F6.3 mag Intensity mean I-band magnitude 26- 31 F6.3 mag Intensity mean V-band magnitude 34- 43 F10.7 days Longer period 45- 53 F9.7 days Uncertainty of the longer period 56- 65 F10.5 days Time of maximum brightness (HJD-2450000) 68- 72 F5.3 mag I-band amplitude (maximum-minimum) 75- 79 F5.3 --- Fourier coefficient R_21 81- 85 F5.3 --- Fourier coefficient phi_21 88- 92 F5.3 --- Fourier coefficient R_31 94- 98 F5.3 --- Fourier coefficient phi_31 100-109 F10.7 days Shorter period 111-119 F9.7 days Uncertainty of the shorter period 122-131 F10.5 days Time of maximum brightness (HJD-2450000) 134-138 F5.3 mag I-band amplitude (maximum-minimum) 141-145 F5.3 --- Fourier coefficient R_21 147-151 F5.3 --- Fourier coefficient phi_21 154-158 F5.3 --- Fourier coefficient R_31 160-164 F5.3 --- Fourier coefficient phi_31 -------------------------------------------------------------------------- Format of the file cep1O2O3O.dat: -------------------------------------------------------------------------- Bytes Format Units Description -------------------------------------------------------------------------- 1- 16 A16 --- Star's ID 19- 24 F6.3 mag Intensity mean I-band magnitude 26- 31 F6.3 mag Intensity mean V-band magnitude 34- 43 F10.7 days Longest period 45- 53 F9.7 days Uncertainty of the longest period 56- 65 F10.5 days Time of maximum brightness (HJD-2450000) 68- 72 F5.3 mag I-band amplitude (maximum-minimum) 75- 79 F5.3 --- Fourier coefficient R_21 81- 85 F5.3 --- Fourier coefficient phi_21 88- 92 F5.3 --- Fourier coefficient R_31 94- 98 F5.3 --- Fourier coefficient phi_31 100-109 F10.7 days Medium period 111-119 F9.7 days Uncertainty of the medium period 122-131 F10.5 days Time of maximum brightness (HJD-2450000) 134-138 F5.3 mag I-band amplitude (maximum-minimum) 141-145 F5.3 --- Fourier coefficient R_21 147-151 F5.3 --- Fourier coefficient phi_21 154-158 F5.3 --- Fourier coefficient R_31 160-164 F5.3 --- Fourier coefficient phi_31 166-175 F10.7 days Shortest period 177-185 F9.7 days Uncertainty of the shortest period 188-197 F10.5 days Time of maximum brightness (HJD-2450000) 200-204 F5.3 mag I-band amplitude (maximum-minimum) 207-211 F5.3 --- Fourier coefficient R_21 213-217 F5.3 --- Fourier coefficient phi_21 220-224 F5.3 --- Fourier coefficient R_31 226-230 F5.3 --- Fourier coefficient phi_31 -------------------------------------------------------------------------- Format of the files with photometry (phot/I/OGLE-BLG-CEP-NNN.dat, phot/V/OGLE-BLG-CEP-NNN.dat) -------------------------------------------------------------------------- Bytes Format Units Description -------------------------------------------------------------------------- 1- 10 F10.5 days Heliocentric Julian Day - 2450000 12- 17 F6.3 mag Magnitude 19- 23 F5.3 mag Uncertainty of magnitude -------------------------------------------------------------------------- Finding charts are gzipped Postscript images. The names of the files are in the form: ID.ps.gz. The finding charts are 60"x60" subframes of the I-band reference frames centered on the star. White cross marks the star. North is up and East to the left. Any presentation of the scientific analysis or usage of the data from the catalog of classical Cepheids in the Magellanic Clouds should include the appropriate reference(s) to OGLE paper(s). Updates: 2020-07-16 37 additional classical Cepheids (from OGLE-BLG-CEP-169 to OGLE-BLG-CEP-205; Soszynski et al. 2020, Acta Astron. 70, 101)