CDROM/AJ/V110/P2206 Variables in Ru 106 (Kaluzny+ 1995) ================================================================================ CCD Photometry of Variable Stars in the Globular Cluster Ru 106 Janusz Kaluzny, Wojciech Krzeminski, & Beata Mazur <1995, AJ, 110, 2206> =1995AJ....110.2206K ================================================================================ Abstract: BV photometry is presented for 12 RR Lyr variables discovered in the presumably young galactic globular cluster Ruprecht 106. All variables are type RRab, and their periods span a narrow range from 0.574 to 0.652 day. We report also on the discovery of three SX Phe variables among the cluster blue stragglers. A likely background RR Lyr variable and two foreground contact binaries were also found in the cluster field. The reddening of Ruprecht 106 is estimated at E(B-V)=0.20 based on the (B-V) colors exhibited by the cluster RR Lyr variables at minimum light. Analysis of the period vs amplitude and period vs rise-time diagrams suggests similar metallicities of Ruprecht 106 and M3. A peak (or bump) is present in the luminosity function of the red giant branch of Ru 106. Its position relative to the horizontal branch is consistent with a cluster metallicity of [Fe/H] >= -1.6. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table1.dat 17 287 Log of Ru 106 observations table5.dat 85 232 V photometry of variables V1-6 table6.dat 85 232 V photometry of variables V7-12 table7.dat 85 232 V photometry of variables V13-18 table8.dat 85 55 B photometry of variables V1-6 table9.dat 85 55 B photometry of variables V7-12 table10.dat 85 55 B photometry of variables V13-18 table11.dat 85 55 B-V photometry of variables V1-6 table12.dat 85 55 B-V photometry of variables V7-12 table13.dat 85 55 B-V photometry of variables V13-18 table14.dat 51 3550 BV photometry for stars from Ru 106 field image.fit 2880 722 FITS format image of Ru 106 field (16 bit/pixel) -------------------------------------------------------------------------------- Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 9 F9.4 d HJD HJD (-2449000) of midpoint of observation 10-14 I5 s Texp Exposure time 15-16 2X --- --- Blank 17 A1 --- Filter [VB] Filter -------------------------------------------------------------------------------- Byte-by-byte Description of file: table5.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag V1 V magnitude for variable V1 15-20 F6.3 mag e_V1 error of V magnitude 21-27 F7.3 mag V2 V magnitude for variable V2 28-33 F6.3 mag e_V2 error of V magnitude 34-40 F7.3 mag V3 V magnitude for variable V3 41-46 F6.3 mag e_V3 error of V magnitude 47-53 F7.3 mag V4 V magnitude for variable V4 54-59 F6.3 mag e_V4 error of V magnitude 60-66 F7.3 mag V5 V magnitude for variable V5 67-72 F6.3 mag e_V5 error of V magnitude 73-79 F7.3 mag V6 V magnitude for variable V6 80-85 F6.3 mag e_V6 error of V magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table6.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag V7 V magnitude for variable V7 15-20 F6.3 mag e_V7 error of V magnitude 21-27 F7.3 mag V8 V magnitude for variable V8 28-33 F6.3 mag e_V8 error of V magnitude 34-40 F7.3 mag V9 V magnitude for variable V9 41-46 F6.3 mag e_V9 error of V magnitude 47-53 F7.3 mag V10 V magnitude for variable V10 54-59 F6.3 mag e_V10 error of V magnitude 60-66 F7.3 mag V11 V magnitude for variable V11 67-72 F6.3 mag e_V11 error of V magnitude 73-79 F7.3 mag V12 V magnitude for variable V12 80-85 F6.3 mag e_V12 error of V magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table7.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag V13 V magnitude for variable V13 15-20 F6.3 mag e_V13 error of V magnitude 21-27 F7.3 mag V14 V magnitude for variable V14 28-33 F6.3 mag e_V14 error of V magnitude 34-40 F7.3 mag V15 V magnitude for variable V15 41-46 F6.3 mag e_V15 error of V magnitude 47-53 F7.3 mag V16 V magnitude for variable V16 54-59 F6.3 mag e_V16 error of V magnitude 60-66 F7.3 mag V17 V magnitude for variable V17 67-72 F6.3 mag e_V17 error of V magnitude 73-79 F7.3 mag V18 V magnitude for variable V18 80-85 F6.3 mag e_V18 error of V magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table8.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B1 B magnitude for variable V1 15-20 F6.3 mag e_B1 error of B magnitude 21-27 F7.3 mag B2 B magnitude for variable V2 28-33 F6.3 mag e_B2 error of B magnitude 34-40 F7.3 mag B3 B magnitude for variable V3 41-46 F6.3 mag e_B3 error of B magnitude 47-53 F7.3 mag B4 B magnitude for variable V4 54-59 F6.3 mag e_B4 error of B magnitude 60-66 F7.3 mag B5 B magnitude for variable V5 67-72 F6.3 mag e_B5 error of B magnitude 73-79 F7.3 mag B6 B magnitude for variable V6 80-85 F6.3 mag e_B6 error of B magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table9.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B7 B magnitude for variable V7 15-20 F6.3 mag e_B7 error of B magnitude 21-27 F7.3 mag B8 B magnitude for variable V8 28-33 F6.3 mag e_B8 error of B magnitude 34-40 F7.3 mag B9 B magnitude for variable V9 41-46 F6.3 mag e_B9 error of B magnitude 47-53 F7.3 mag B10 B magnitude for variable V10 54-59 F6.3 mag e_B10 error of B magnitude 60-66 F7.3 mag B11 B magnitude for variable V11 67-72 F6.3 mag e_B11 error of B magnitude 73-79 F7.3 mag B12 B magnitude for variable V12 80-85 F6.3 mag e_B12 error of B magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table10.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B13 B magnitude for variable V13 15-20 F6.3 mag e_B13 error of B magnitude 21-27 F7.3 mag B14 B magnitude for variable V14 28-33 F6.3 mag e_B14 error of B magnitude 34-40 F7.3 mag B15 B magnitude for variable V15 41-46 F6.3 mag e_B15 error of B magnitude 47-53 F7.3 mag B16 B magnitude for variable V16 54-59 F6.3 mag e_B16 error of B magnitude 60-66 F7.3 mag B17 B magnitude for variable V17 67-72 F6.3 mag e_B17 error of B magnitude 73-79 F7.3 mag B18 B magnitude for variable V18 80-85 F6.3 mag e_B18 error of B magnitude -------------------------------------------------------------------------------- Byte-by-byte Description of file: table11.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B-V1 B-V color for variable V1 15-20 F6.3 mag e_B-V1 error of B-V color 21-27 F7.3 mag B-V2 B-V color for variable V2 28-33 F6.3 mag e_B-V2 error of B-V color 34-40 F7.3 mag B-V3 B-V color for variable V3 41-46 F6.3 mag e_B-V3 error of B-V color 47-53 F7.3 mag B-V4 B-V color for variable V4 54-59 F6.3 mag e_B-V4 error of B-V color 60-66 F7.3 mag B-V5 B-V color for variable V5 67-72 F6.3 mag e_B-V5 error of B-V color 73-79 F7.3 mag B-V6 B-V color for variable V6 80-85 F6.3 mag e_B-V6 error of B-V color -------------------------------------------------------------------------------- Byte-by-byte Description of file: table12.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B-V7 B-V color for variable V7 15-20 F6.3 mag e_B-V7 error of B-V color 21-27 F7.3 mag B-V8 B-V color for variable V8 28-33 F6.3 mag e_B-V8 error of B-V color 34-40 F7.3 mag B-V9 B-V color for variable V9 41-46 F6.3 mag e_B-V9 error of B-V color 47-53 F7.3 mag B-V10 B-V color for variable V10 54-59 F6.3 mag e_B-V10 error of B-V color 60-66 F7.3 mag B-V11 B-V color for variable V11 67-72 F6.3 mag e_B-V11 error of B-V color 73-79 F7.3 mag B-V12 B-V color for variable V12 80-85 F6.3 mag e_B-V12 error of B-V color -------------------------------------------------------------------------------- Byte-by-byte Description of file: table13.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 F6.4 d HJD HJD (-2449100) of midpoint of observation 7-14 F8.3 mag B-V13 B-V color for variable V13 15-20 F6.3 mag e_B-V13 error of B-V color 21-27 F7.3 mag B-V14 B-V color for variable V14 28-33 F6.3 mag e_B-V14 error of B-V color 34-40 F7.3 mag B-V15 B-V color for variable V15 41-46 F6.3 mag e_B-V15 error of B-V color 47-53 F7.3 mag B-V16 B-V color for variable V16 54-59 F6.3 mag e_B-V16 error of B-V color 60-66 F7.3 mag B-V17 B-V color for variable V17 67-72 F6.3 mag e_B-V17 error of B-V color 73-79 F7.3 mag B-V18 B-V color for variable V18 80-85 F6.3 mag e_B-V18 error of B-V color -------------------------------------------------------------------------------- Byte-by-byte Description of file: table14.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 6 I6 --- ID ID number 7-15 F9.2 pix X X coordinate 16-24 F9.2 pix Y Y coordinate 25-31 F7.3 mag V V magnitude 32-38 F7.3 mag e_V error of V magnitude 39-44 F6.3 mag B-V B-V color 45-51 F7.3 mag e_B-V error of B-V -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 19-Feb-1996