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A new insight into the V1184 Tau variability
T. Giannini, D. Lorenzetti, A. Harutyunyan +5
V1184 Tau is a young variable for long time monitored at optical wavelengths. Its variability has been ascribed to a sudden and repetitive increase of the circumstellar extinction…
The variable V381 Lac and its possible connection with the R CrB phenomenon
Corinne Rossi, Flavia Dell'Agli, Andrea Di Paola +2
We have performed new medium resolution spectroscopy, optical and near infrared photometry to monitor the variability of the AGB carbon star V 381 Lac. Our observations revealed ra…
First X-ray dectection of the young variable V1180 Cas
S. Antoniucci, A. A. Nucita, T. Giannini +8
V1180 Cas is a young variable that has shown strong photometric fluctuations (Delta_I~6mag) in the recent past, which have been attributed to events of enhanced accretion. The sour…
A long-lasting quiescence phase of the eruptive variable V1118 Ori
D. Lorenzetti, S. Antoniucci, T. Giannini +9
V1118 Ori is an eruptive variable belonging to the EXor class of Pre-Main Sequence stars whose episodic outbursts are attributed to disk accretion events. Since 2006, V1118 Ori is…
Mid- and Far-Infrared Variability of PV Cep
Dario Lorenzetti, Simone Antoniucci, Teresa Giannini +4
We present the collection of all the mid- and far-IR observations (3-170 um) of the young eruptive variable PV Cep available so far in the literature. These data allow us to confir…
Recent outburst of the young star V1180 Cas
S. Antoniucci, A. A. Arkharov, A. Di Paola +9
We report on the ongoing outburst of the young variable V1180 Cas, which is known to display characteristics in common with EXor eruptive variables. We present results that support…
Interpreting the simultaneous variability of near-IR continuum and line emission in young stellar objects
D. Lorenzetti, S. Antoniucci, T. Giannini +3
We present new near-infrared (IR) spectra (0.80-1.35um) of the pre-Main Sequence source PV Cep taken during a monitoring program of eruptive variables we are conducting since some…
On the nature of the EXor accretion events: an unfrequent manifestation of a common phenomenology ?
D. Lorenzetti, S. Antoniucci, T. Giannini +7
We present the results of a comparison between classical and newly identified EXor based on literature data and aimed at recognizing possible differences or similarities of both ca…
Simultaneous monitoring of the photometric and polarimetric activity of the young star PV Cep in the optical/near-infrared bands
D. Lorenzetti, T. Giannini, V. M. Larionov +7
We present the results of a simultaneous monitoring, lasting more than 2 years, of the optical and near-infrared photometric and polarimetric activity of the variable protostar PV…