J/AJ/135/83 MACHO LMC first overtone RR Lyrae (Clement+, 2008) ================================================================================ The distance of the first overtone RR Lyrae variables in the MACHO Large Magellanic Cloud database: a new method to correct for the effects of crowding. Clement C.M., Xu X., Muzzin A.V. =2008AJ....135...83C ================================================================================ ADC_Keywords: Magellanic Clouds ; Stars, variable ; Magnitudes Keywords: galaxies: distances and redshifts - Magellanic clouds - stars: variables: other Abstract: Previous studies have indicated that many of the RR Lyrae variables in the LMC have properties similar to those in the Galactic globular cluster M3. Assuming that the M3 RR Lyrae variables follow the same relationships among period, temperature, amplitude, and Fourier phase parameter phi31 as their LMC counterparts, we have used the M3 phi31-logP relation to identify the M3-like unevolved first overtone RR Lyrae variables in 16 MACHO fields near the LMC bar. File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table4.dat 62 51 Parameters of the uncrowded, unevolved M3-like RR1 variables -------------------------------------------------------------------------------- See also: II/247 : Variable Stars in the Large Magellanic Clouds (MACHO, 2001) J/ApJ/542/257 : MACHO LMC first-overtone RR Lyrae (Alcock+, 2000) J/AJ/127/334 : MACHO LMC first-overtone RR Lyrae variables (Alcock+, 2004) J/ApJ/598/597 : Frequency analysis of fundamental-mode RR Lyrae (Alcock+, 2003) http://macho.anu.edu.au/ : MACHO Home Page Byte-by-byte Description of file: table4.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 12 A12 --- Name MACHO star identification 14- 21 F8.6 d Per Period 23- 27 F5.2 mag Mean 6-order Fourier series fit V band magnitude 29- 33 F5.2 mag Mean 6-order Fourier series fit R band magnitude 35- 39 F5.2 mag E(V) The V band extinction 41- 45 F5.2 mag V0mag Extinction corrected V band magnitude 47- 51 F5.2 mag V0(vdM) Extinction corrected V band magnitude, according to the LMC viewing angle derived by van der Marel & Cioni (2001AJ....122.1807V) 53- 57 F5.2 mag V0(Nik) Extinction corrected V band magnitude, according to the LMC viewing angle derived by Nikolaev et al. (2004ApJ...601..260N) 59- 62 F4.2 --- Weight Probability star lies between the envelope lines in Figure 3 -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Greg Schwarz [AAS], Patricia Vannier [CDS] 11-Feb-2011