Results 151 to 160 of about 58,260 (304)

Variability of young stars: Determination of rotational periods of weak-line T Tauri stars in the Cepheus-Cassiopeia star-forming region

, 2009
We report on observation and determination of rotational periods of ten weak-line T Tauri stars in the Cepheus-Cassiopeia star-forming region. Observations were carried out with the Cassegrain-Teleskop-Kamera (CTK) at University Observatory Jena between ...
Broeg, Ch., Eisenbeiss, T., Ginski, Ch., Hohle, M. M., Koeltzsch, A., Marka, C., Moualla, M., Mugrauer, M., Neuhäuser, R., Raetz, St., Roell, T., Schmidt, T. O. B., Schreyer, K., Vanko, M.   +13 more
core   +1 more source

When the Wall Fell: Study of Polycyclic Aromatic Hydrocarbons in T Chamaeleontis Using JWST

The Astronomical Journal
We investigate the polycyclic aromatic hydrocarbon (PAH) emission features of T Cha, a G8-type T Tauri star that has exhibited “seesaw”-type mid-infrared continuum variability over nearly two decades due to the destruction of the disk’s inner wall, using
R. Arun
doaj   +1 more source

Mid-IR observations of circumstellar disks -- Part III: A mixed sample of PMS stars and Vega-type objects

, 2009
We present new mid-infrared spectra for a sample of 15 targets (1 FU Orionis object, 4 Herbig Ae stars, 5 T Tauri stars and 5 Vega type stars), obtained with the TIMMI2 camera at La Silla Observatory (ESO).
Acke, Acke, Beichman, Boersma, Bohac, Bouwman, Bouwman, Byrne, Carmona, Catala, Cohen, Coulson, D'Angelo, Dent, Dorschner, Doucet, Dullemond, Dunkin, E. Peeters, Furlan, G. Meeus, Geers, Geers, Geers, Green, Habart, Habart, Hales, Hallenbeck, Hanner, Hartmann, Henning, Herbig, Hernández, Higdon, Hillenbrand, Honda, Hony, Houck, Hudgins, Hutchinson, Jaeger, Jayawardhana, Jensen, Kemper, Kenyon, Kenyon, Kessler-Silacci, Kessler-Silacci, Kurucz, Käufl, Lagage, Lagage, Leinert, Leinert, Li, Lisse, Lisse, Lovis, Lowrance, M. F. Sterzik, Malfait, Mamajek, Mannings, Mattioda, Meeus, Meeus, Meeus, Moorwood, Natta, O. Schütz, Okamoto, Oudmaijer, Pascucci, Pasquini, Peeters, Peeters, Perrin, Pogodin, Prato, Przygodda, Quanz, Quanz, Quast, Savage, Schegerer, Schütz, Schütz, Servoin, Sheret, Sicilia-Aguilar, Sloan, Sloan, Sloan, Smith, Song, Song, Spitzer, Stencel, Sterzik, Strassmeier, Sylvester, Sylvester, Sylvester, Tielens, Torres, Torres, Torres, van Boekel, van Boekel, van Boekel, van den Ancker, van Diedenhoven, Van Kerckhoven, Vieira, Wang, Werner, Wyatt, Yudin, Zuckerman, Zuckerman   +120 more
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T Tauri and FU Orionis Stars [PDF]

Symposium - International Astronomical Union, 1975
A great deal of information on the continuous radiation of T Tau- and similar type stars has been acquired. The cause of the ultraviolet and infrared excess emission is discussed. The possibility that the blue continuum may arise from numerous line emissions is considered.
openaire   +2 more sources

A Spectroscopic Survey of Subarcsecond Binaries in the Taurus-Auriga Dark Cloud with the Hubble Space Telescope

, 2002
We report the results of a spectroscopic survey of 20 close T Tauri binaries in the Taurus-Auriga dark cloud where the separations between primaries and their secondaries are less than the typical size of a circumstellar disk around a young star ...
Baraffe I., Brandner W., Duchene G., Duvert G., Guilloteau S., Leinert Ch., Mathieu R., Patrick Hartigan, Scott J. Kenyon, Siess L.   +9 more
core   +1 more source

On the Variable Nebul of Hind (N.G.C. 1555) and Struve (N.G.C. 1554) in Taurus, and on the Nebulous Condition of the Variable Star T Tauri [PDF]

, 1895
E. E. Barnard
openalex   +1 more source

TIC 290061484: A Triply Eclipsing Triple System with the Shortest Known Outer Period of 24.5 Days

The Astrophysical Journal
We have discovered a triply eclipsing triple-star system, TIC 290061484, with the shortest known outer period, P _out , of only 24.5 days. This “eclipses” the previous record set by λ Tauri at 33.02 days, which held for 68 yr.
V. B. Kostov, S. A. Rappaport, T. Borkovits, B. P. Powell, R. Gagliano, M. Omohundro, I. B. Bíró, M. Moe, S. B. Howell, T. Mitnyan, C. A. Clark, M. H. Kristiansen, I. A. Terentev, H. M. Schwengeler, A. Pál, A. Vanderburg   +15 more
doaj   +1 more source

Near Infrared Polarimetry of Dark Clouds and Star Forming Regions - Two Micron Polarization Survey of T Tauri Stars [PDF]

, 1990
Motohide Tamura, S. Sato
openalex   +1 more source

Optical Monitoring of T Tauri Stars [PDF]

International Astronomical Union Colloquium, 1983
At the Van Vleck Observatory of Wesleyan University, Middletown, Connecticut, we have initiated a program of monitoring T Tauri stars with the 24-inch reflector (Perkin Telescope). During the first observing season, we have obtained UBVRI and Hα (30Å and 150Å) data for five stars: T Tau, RY Tau, SU Aur, RW Aur, and CO Ori.
openaire   +2 more sources

Magnetic fields of intermediate mass T Tauri stars

, 2017
Aims. In this paper, we aim to measure the strength of the surface magnetic fields for a sample of five intermediate mass T Tauri stars and one low mass T Tauri star from late-F to mid-K spectral types.
Alecian, E., Herczeg, G. J., Hussain, G. A. J., Johns-Krull, C., Kochukhov, O., Lavail, A.   +5 more
core   +2 more sources