J/MNRAS/407/1070 UBV(RI)c photometry of LL Cas (Munari+, 2010) ================================================================================ The dust-free symbiotic Mira K4-46 = LL Cas. Munari U., Siviero A., Dallaporta S., Frigo A. =2010MNRAS.407.1070M ================================================================================ ADC_Keywords: Stars, variable ; Photometry, UBVRI ; Photometry, Cousins Keywords: stars: AGB and post-AGB - binaries: symbiotic - stars: individual: LL Cas Abstract: Accurate BV(RI)c light and colour curves of the Mira variable in the dust-free symbiotic system K4-46 are presented and discussed. They cover several consecutive pulsations cycles. The Mira mean period is 284.2d, the reddening sums to E(B-V)=0.35 and the distance is 10kpc. Absolute spectrophotometry at both maximum and minimum brightness of the Mira is presented. Description: BVRcIc CCD photometric observations were obtained with a 0.30-m Meade RCX-400 f/8 Schmidt-Cassegrain telescope located in Cembra (Trento, Italy). Objects: --------------------------------------------- RA (2000) DE Designation(s) --------------------------------------------- 23 09 20.2 +54 44 50 LL Cas = PN K 4-46 --------------------------------------------- File Summary: -------------------------------------------------------------------------------- FileName Lrecl Records Explanations -------------------------------------------------------------------------------- ReadMe 80 . This file table1.dat 55 190 Our BVRcIc photometry of K4-46 -------------------------------------------------------------------------------- See also: J/A+A/372/145 : Symbiotic stars UBV(RI)c photometry. II. (Henden+, 2001) J/BaltA/17/293 : Symbiotic stars multi-epoch UBV(RI)c photometry (Henden+ 2008) J/A+A/479/529 : Spectral observations of symbiotic LL Cas (Kondratyeva+, 2008) Byte-by-byte Description of file: table1.dat -------------------------------------------------------------------------------- Bytes Format Units Label Explanations -------------------------------------------------------------------------------- 1- 11 F11.3 d HJD Heliocentric Julian date 13- 26 A14 --- Date Observation date, in YYYY/MM/DD.ddd units 29- 34 F6.3 mag Vmag Johnson V magnitude 37- 41 F5.3 mag V-Ic Johnson-Cousins V-I colour index 44- 48 F5.3 mag V-Rc ? Johnson-Cousins V-R colour index 51- 55 F5.3 mag B-V ? Johnson B-V colour index -------------------------------------------------------------------------------- History: From electronic version of the journal ================================================================================ (End) Patricia Vannier [CDS] 08-Feb-2011