TY - JOUR
T1 - Photometric monitoring of the young star Par 1724 in Orion
AU - Neuhäuser, R.
AU - Koeltzsch, A.
AU - Raetz, St
AU - Schmidt, T. O. B.
AU - Mugrauer, M.
AU - Young, N.
AU - Bertoldi, F.
AU - Roell, T.
AU - Eisenbeiss, T.
AU - Hohle, M. M.
AU - Vaňko, M.
AU - Ginski, C.
AU - Rammo, W.
AU - Moualla, M.
AU - Broeg, C.
PY - 2009/5
Y1 - 2009/5
N2 - We report new photometric observations of the ∼ 200 000 year old naked weak-line run-away T Tauri star Par 1724, located north of the Trapezium cluster in Orion. We observed in the broad band filters B, V, R, and I using the 90 cm Dutch telescope on La Silla, the 80 cm Wendelstein telescope, and a 25 cm telescope of the University Observatory Jena in Großschwabhausen near Jena. The photometric data in V and R are consistent with a ∼ 5.7 day rotation period due to spots, as observed before between 1960ies and 2000. Also, for the first time, we present evidence for a long-term 9 or 17.5 year cycle in photometric data (V band) of such a young star, a cycle similar to that to of the Sun and other active stars. Based on observations obtained with telescopes of the University Observatory Jena, which is operated by the Astrophysical Institute of the Friedrich-Schiller-University; a telescope of the University Observatory Munich on Mount Wendelstein, the 0.9m ESO-Dutch telescope on La Silla, Chile, and with the All Sky Automated Survey (ASAS) project (www.astrouw.edu.pl/asas)....
AB - We report new photometric observations of the ∼ 200 000 year old naked weak-line run-away T Tauri star Par 1724, located north of the Trapezium cluster in Orion. We observed in the broad band filters B, V, R, and I using the 90 cm Dutch telescope on La Silla, the 80 cm Wendelstein telescope, and a 25 cm telescope of the University Observatory Jena in Großschwabhausen near Jena. The photometric data in V and R are consistent with a ∼ 5.7 day rotation period due to spots, as observed before between 1960ies and 2000. Also, for the first time, we present evidence for a long-term 9 or 17.5 year cycle in photometric data (V band) of such a young star, a cycle similar to that to of the Sun and other active stars. Based on observations obtained with telescopes of the University Observatory Jena, which is operated by the Astrophysical Institute of the Friedrich-Schiller-University; a telescope of the University Observatory Munich on Mount Wendelstein, the 0.9m ESO-Dutch telescope on La Silla, Chile, and with the All Sky Automated Survey (ASAS) project (www.astrouw.edu.pl/asas)....
U2 - 10.1002/asna.200911196
DO - 10.1002/asna.200911196
M3 - Article
JO - Astronomische Nachrichten
JF - Astronomische Nachrichten
ER -