HD 264300 is a Low Amplitude Red Variable
Gomez-Forrellad, J.M.1,2; Henden, A.A.3
(1) Grup d'Estudis Astronomics, Apartado 9481, 08080 Barcelona, Spain, e-mail: jmgomez@astrogea.org (2) Esteve Duran Observatory Foundation, El Montanya-Seva, 08553 Seva, Spain (3) USRA/USNO, P.O. Box 1149, Flagstaff, AZ 86002-1149, USA, e-mail: aah@nofs.navy.mil
Object(s):
Name of the object: HD 264300 = BD +05°1417 = GSC 156_1457 = SAO 114441
Equatorial coordinates: R.A.=6h48m30s.12
DEC.=+5°00'.26".92 Equinox:2000.0
Observatory and telescope: Mollet Observatory, 0.41-m Newtonian
telescope;
U.S. Naval Observatory, 1-m Ritchey-Chrétien telescope
Detector: CCD
Filter(s): B, V, Rc, Ic
Comparison star(s): GSC 156_1475
Check star(s): None
Transformed to a standard system: Johnson-Cousins
Standard stars (field) used: Landolt standards (1992)
Availability of the data: From the IBVS Web-site as 5010-t1.txt
Data file: /pub/ibvs/5001/5010-t1.txt
Type of variability: L:
Remarks: While performing observations of the new eclipsing binary star
GSC 156_1365 (Gomez et al., 2000) it was found that HD 264300, with a V magnitude of 9.39
(B-V=1.31) and K5 spectral type, was slightly variable. The star was observed in the V
band for 89 nights from 1997 to 1998. Additional observations were also obtained in the BRcIc
bands. Data show that during this period the V magnitude of this star fluctuated between
9.32 and 9.42 with an apparent irregular behaviour (Figure 1). The following color
indices were obtained for HD 264300: B-V=1.298±0.016, V-Rc=0.668±0.032, and Rc-Ic=0.609±0.023.
References:
Gomez-Forrellad, J.M., Henden, A.A., Guarro-Flo, J., 2000, IBVS, No. 4972 (IBVS N°.4972)
Landolt, A.U., 1992, AJ, 104, 340 (1992AJ....104..340L)