UX Tri: Period Change Discovered and Unchanged Strong Blazhko Effect Confirmed
Herbert Achterberg, Dieter Husar
Abstract
New CCD observations of the RRab star UX Tri after JD = 2452234 show a change of the main pulsation period. The period is now P = 0.4669046 +/- 0.0000006 [d]. The change is deltaP = - 1.72 x 10-5 [d] if compared with the value we previously published in IBVS 5210. A strong Blazhko effect with unchanged Blazhko period PB = 43.7 +/- 0.1 [d] is confirmed by this paper. Light curve particularities around Blazhko phase phiB = 0.0 are discussed in detail. In one observation (JD 2453617) related to Blazhko phase phiB = 0.12 an exceptionally pronounced "bump" of deltam > -0.1 magnitude was observed at pulsation phase phi = 0.71.
Create a lesson
Related papers
On binary pulsars and the force of gravity
Davor Palle
Tidal torques. A critical review of some techniques
Michael Efroimsky, James G. Williams
Dynamics of a Spherical Accretion Shock with Neutrino Heating and Alpha-Particle Recombination
Rodrigo Fernández, Christopher Thompson
Asymptotically FRW black holes
J. T. Firouzjaee, Reza Mansouri
Reaction of Accretion Disks to Abrupt Mass Loss During Binary Black Hole Merger
Sean M. O'Neill, M. Coleman Miller, Tamara Bogdanovic et al.
A Gamma-Ray Burst/Pulsar for Cosmic-Ray Positrons with a Dark Matter-like Spectrum
Kunihito Ioka