TY - JOUR

T1 - UX Ori variables in the cluster IC 348

AU - Barsunova, O.Y.

AU - Grinin, V.P.

AU - Sergeev, S.G.

AU - Semenov, A.O.

AU - Yu Shugarov, S.Y.

PY - 2015

Y1 - 2015

N2 - © 2015 Springer Science+Business Media New York.Results are presented from many years of photometric (VRCIC) observations of three variable T Tauri type stars in the cluster IC 348: V712 Per, V719 Per, and V909 Per. All three stars have photometric activity characteristic of UX Ori stars. The activity of V719 Per has increased significantly over the last 10 years: the amplitude of its Algol-like minima has increased by roughly a factor of 4 and has reached three stellar magnitudes in the I band. Periodograms of the light curves do not confirm the periods found previously by other authors on the basis of shorter series of observations. The slope of the color tracks on “color-magnitude” diagrams is used to determine the reddening law for these stars owing to selective absorption by circumstellar dust. Modelling of these parameters by the Mie theory shows that the maximum size amax of the dust particles in the protoplanetary disks of these stars is 1.5-2 times greater than in the

AB - © 2015 Springer Science+Business Media New York.Results are presented from many years of photometric (VRCIC) observations of three variable T Tauri type stars in the cluster IC 348: V712 Per, V719 Per, and V909 Per. All three stars have photometric activity characteristic of UX Ori stars. The activity of V719 Per has increased significantly over the last 10 years: the amplitude of its Algol-like minima has increased by roughly a factor of 4 and has reached three stellar magnitudes in the I band. Periodograms of the light curves do not confirm the periods found previously by other authors on the basis of shorter series of observations. The slope of the color tracks on “color-magnitude” diagrams is used to determine the reddening law for these stars owing to selective absorption by circumstellar dust. Modelling of these parameters by the Mie theory shows that the maximum size amax of the dust particles in the protoplanetary disks of these stars is 1.5-2 times greater than in the

U2 - 10.1007/s10511-015-9375-8

DO - 10.1007/s10511-015-9375-8

M3 - Article

SP - 193

EP - 203

JO - Astrophysics

JF - Astrophysics

SN - 0571-7256

IS - 2

ER -