CDROM/AJ/V105/P0527 RR Lyraes of NGC 1835 (Walker 1993) ================================================================================ The Large Magellanic Cloud Cluster NGC 1835: Photometry of the RR Lyrae Stars Alistair R. Walker <1993, AJ, 105, 257> =1993AJ....105..257W ================================================================================ Abstract: Photometry is presented for the RR Lyrae variables in the Large Magellanic Cloud (LMC) cluster NGC 1835. Sixteen new variables have been discovered. Due to the extreme crowding of the LMC field stars, the scatter of the light curves and mean magnitudes is greater than that found for other LMC clusters studied under similar conditions. The derived parameters of the light curves yield E(B-V) = 0.13 and [Fe/H] = -1.8, consistent with previous measurements. The complete sample of RR Lyraes has mean magnitudes = 19.38, = 19.70. If a distance modulus of 18.5 mag for the LMC is assumed, then in the mean the NGC 1835 RR Lyraes have = 0.48, almost identical to the average found by the same procedure for the six other LMC clusters. File Summary: -------------------------------------------------------------------------------- File Name Lrecl Records Explanations -------------------------------------------------------------------------------- table3.dat 463 37 Photometry of the RR Lyrae variables -------------------------------------------------------------------------------- Comments for file: table3.dat -------------------------------------------------------------------------------- Each record contains the heliocentric Julian date and the V and B magnitude pairs for each of the 35 program stars (GR 1, 3-9, 11, 13-20, 22-23, and V 24-39). -------------------------------------------------------------------------------- Byte-by-byte Description of file: table3.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 8 F8.3 day HJD Heliocentric Julian Date - 2440000 9- 15 F7.2 mag GR1_V []? GR1 V magnitude 16- 21 F6.2 mag GR1_B []? GR1 B magnitude 22- 28 F7.2 mag GR3_V []? GR3 V magnitude 29- 34 F6.2 mag GR3_B []? GR3 B magnitude 35- 41 F7.2 mag GR4_V []? GR4 V magnitude 42- 47 F6.2 mag GR4_B []? GR4 B magnitude 48- 54 F7.2 mag GR5_V []? GR5 V magnitude 55- 60 F6.2 mag GR5_B []? GR5 B magnitude 61- 67 F7.2 mag GR6_V []? GR6 V magnitude 68- 73 F6.2 mag GR6_B []? GR6 B magnitude 74- 80 F7.2 mag GR7_V []? GR7 V magnitude 81- 86 F6.2 mag GR7_B []? GR7 B magnitude 87- 93 F7.2 mag GR8_V []? GR8 V magnitude 94- 99 F6.2 mag GR8_B []? GR8 B magnitude 100-106 F7.2 mag GR9_V []? GR9 V magnitude 107-112 F6.2 mag GR9_B []? GR9 B magnitude 113-119 F7.2 mag GR11_V []? GR11 V magnitude 120-125 F6.2 mag GR11_B []? GR11 B magnitude 126-132 F7.2 mag GR13_V []? GR13 V magnitude 133-138 F6.2 mag GR13_B []? GR13 B magnitude 139-145 F7.2 mag GR14_V []? GR14 V magnitude 146-151 F6.2 mag GR14_B []? GR14 B magnitude 152-158 F7.2 mag GR15_V []? GR15 V magnitude 159-164 F6.2 mag GR15_B []? GR15 B magnitude 165-171 F7.2 mag GR16_V []? GR16 V magnitude 172-177 F6.2 mag GR16_B []? GR16 B magnitude 178-184 F7.2 mag GR17_V []? GR17 V magnitude 185-190 F6.2 mag GR17_B []? GR17 B magnitude 191-197 F7.2 mag GR18_V []? GR18 V magnitude 198-203 F6.2 mag GR18_B []? GR18 B magnitude 204-210 F7.2 mag GR19_V []? GR19 V magnitude 211-216 F6.2 mag GR19_B []? GR19 B magnitude 217-223 F7.2 mag GR20_V []? GR20 V magnitude 224-229 F6.2 mag GR20_B []? GR20 B magnitude 230-236 F7.2 mag GR22_V []? GR22 V magnitude 237-242 F6.2 mag GR22_B []? GR22 B magnitude 243-249 F7.2 mag GR23_V []? GR23 V magnitude 250-255 F6.2 mag GR23_B []? GR23 B magnitude 256-262 F7.2 mag V24_V []? V24 V magnitude 263-268 F6.2 mag V24_B []? V24 B magnitude 269-275 F7.2 mag V25_V []? V25 V magnitude 276-281 F6.2 mag V25_B []? V25 B magnitude 282-288 F7.2 mag V26_V []? V26 V magnitude 289-294 F6.2 mag V26_B []? V26 B magnitude 295-301 F7.2 mag V27_V []? V27 V magnitude 302-307 F6.2 mag V27_B []? V27 B magnitude 308-314 F7.2 mag V28_V []? V28 V magnitude 315-320 F6.2 mag V28_B []? V28 B magnitude 321-327 F7.2 mag V29_V []? V29 V magnitude 328-333 F6.2 mag V29_B []? V29 B magnitude 334-340 F7.2 mag V30_V []? V30 V magnitude 341-346 F6.2 mag V30_B []? V30 B magnitude 347-353 F7.2 mag V31_V []? V31 V magnitude 354-359 F6.2 mag V31_B []? V31 B magnitude 360-366 F7.2 mag V32_V []? V32 V magnitude 367-372 F6.2 mag V32_B []? V32 B magnitude 373-379 F7.2 mag V33_V []? V33 V magnitude 380-385 F6.2 mag V33_B []? V33 B magnitude 386-392 F7.2 mag V34_V []? V34 V magnitude 393-398 F6.2 mag V34_B []? V34 B magnitude 399-405 F7.2 mag V35_V []? V35 V magnitude 406-411 F6.2 mag V35_B []? V35 B magnitude 412-418 F7.2 mag V36_V []? V36 V magnitude 419-424 F6.2 mag V36_B []? V36 B magnitude 425-431 F7.2 mag V37_V []? V37 V magnitude 432-437 F6.2 mag V37_B []? V37 B magnitude 438-444 F7.2 mag V38_V []? V38 V magnitude 445-450 F6.2 mag V38_B []? V38 B magnitude 451-457 F7.2 mag V39_V []? V39 V magnitude 458-463 F6.2 mag V39_B []? V39 B magnitude -------------------------------------------------------------------------------- ================================================================================ (End) Lee Brotzman [ADS] 27-Feb-1995