J/AJ/145/14 BV(RI)c light curves of V1043 Cas (Samec+, 2013) ================================================================================ BVR_c_I_c_ observations and analyses of the dwarf detached binary V1043 Cassiopeia and a comment on precontact W Uma'S. Samec R.G., Smith P.M., Chamberlain H., Faulkner D.R., Van Hamme W. =2013AJ....145...14S ================================================================================ ADC_Keywords: Binaries, eclipsing ; Photometry, UBVRI Keywords: binaries: close - binaries: eclipsing - stars: evolution - stars: individual: V1043 CAS Abstract: Complete Bessel BVR_c_I_c_ light curves of V1043 Cassiopeia [2MASS J00371195+5301324, Mis V1292, USNO-A2.0 1425-00875743, {alpha}(2000)=00^h^37^m^11.95^s^, {delta}(2000)=+53{deg}01'32.5"] are analyzed. The system is a member of the small group of pre-contact W UMa binaries (PCWBs). Its light curve has the appearance of an Algol (EA) light curve, however it is made up of dwarf solar type components in a detached mode with a period of only 0.6616days. The analysis includes a period study, an improved ephemeris, a mass ratio search, and a simultaneous BVR_c_I_c_ Wilson-Devinney solution. We document about 20 other PCWBs given in the literature. Several have RS CVn-like properties. Description: Our BVR_c_I_c_ observations were taken on 2010 September 28 and 29 at Lowell Observatory with the 0.81m reflector on Anderson Mesa, outside Flagstaff with National Undergraduate Research Observatory (NURO) time and a CRYOTIGER cooled (< -100{deg}C) 2K*2K CCD NASACAM. Exposure times were 150s in B, 45s in V, 40s in R_c_, and 40s in I_c_. Objects: ------------------------------------------------------------------------ RA (2000) DE Designation(s) (Period) ------------------------------------------------------------------------ 00 37 11.95 +53 01 32.5 V1043 Cassiopeia = Mis V1292 (P=0.66158617) ------------------------------------------------------------------------ File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 15 829 Photometry of V1043 Cas -------------------------------------------------------------------------------- See also: B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013) J/PASP/124/693 : HO Psc UBV(RI)c light curves (Samec+, 2012) J/other/IBVS/5969 : 80th name-list of variable stars. I. (Kazarovets+, 2011) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 5 F5.3 mag Dmag Differential magnitude in Filter (1) 7- 13 F7.4 d HJD Heliocentric Julian Date (HJD-2455400) 15 A1 --- Flt [BVRI] Filter (B, V, Rc, or Ic) -------------------------------------------------------------------------------- Note (1): Variable minus comparison star (GSC 3654 0269). The standard error of a single observation was 4mmag in V, 3mmag in R_c_ and I_c_, and 7mmag in B. -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Sylvain Guehenneux [CDS] 03-Mar-2014