Results 61 to 70 of about 58,006 (237)

A Two-Dimensional Near-Infrared Speckle Imaging Survey of T Tauri Stars in Taurus and Ophiuchus [PDF]

, 1992
We present the results of a magnitude limited (K≤8.5 mag) multiplicity survey of T Tauri stars in the two nearest star forming regions, Taurus-Auriga and Ophiuchus-Scorpius (D = 150 pc), observable from the northern hemisphere.
Ghez, A., Matthews, K., Neugebauer, G.
core   +1 more source

The large-scale magnetic field and poleward mass accretion of the classical T Tauri star TW Hya [PDF]

, 2011
We report here results of spectropolarimetric observations of the ≃8 Myr classical T Tauri star (cTTS) TW Hya carried out with ESPaDOnS at the Canada–France–Hawaii Telescope in the framework of the ‘Magnetic Protostars and Planets’ programme, and ...
J. Donati, S. Gregory, S. Alencar, J. Bouvier, G. Hussain, M. Skelly, C. Dougados, M. Jardine, F. Ménard, M. Romanova, Y. Unruh, the MaPP collaboration   +11 more
semanticscholar   +1 more source

Centimeter-sized Grains in the Compact Dust Ring around Very-low-mass Star CIDA 1

The Astronomical Journal, 2023
We examined the grain size in the dust ring encircling the 0.19 M _☉ T Tauri star CIDA 1 using the Karl G. Jansky Very Large Array at multiple centimeter wavelengths, with a spatial resolution of 0.″2–0.″9. We detected distinct partial-ring structures at
Jun Hashimoto, Hauyu Baobab Liu, Ruobing Dong, Beibei Liu, Takayuki Muto, Yuka Terada   +5 more
doaj   +1 more source

Nonradial and nonpolytropic astrophysical outflows IX. Modeling T Tauri jets with a low mass-accretion rate

, 2011
Context: A large sample of T Tauri stars exhibits optical jets, approximately half of which rotate slowly, only at ten per cent of their breakup velocity.
Agra-Amboage, Aibéo, Anderson, André, Bardeen, Beck, Bertout, Blandford, Bouvier, Bouvier, Bouvier, C. Sauty, Cabrit, Cabrit, Calvet, Casse, Choi, Cieza, Clarke, Contopoulos, Decampli, Donati, Dougados, Edwards, Edwards, Fendt, Ferreira, Ferreira, Ferro-Fontán, Garcia, Garcia, Ghosh, Ghosh, Gracia, Gómez de Castro, Gómez de Castro, Günther, Hartigan, Herbst, J. J. G. Lima, K. Tsinganos, Koide, Kopp, Krasnopolsky, Kundurthy, Kwan, Küker, Lavalley-Fouquet, Li, Lima, Marilli, Matsakos, Matsakos, Matt, Matt, Matt, Matt, Matt, Meliani, Mestel, Mestel, Mora, N. Globus, Ouyed, Petrov, Pudritz, Rebull, Rebull, Rebull, Romanova, Sauty, Sauty, Sauty, Sauty, Sauty, Schatzman, Schwartz, Shang, Shu, Spruit, St-Onge, Stassun, Stassun, Stute, Ustyugova, V. Cayatte, Vidotto, Vidotto, Vlahakis, Vlahakis, Walter, Weber, Z. Meliani, Zanni   +93 more
core   +2 more sources

Rotation in NGC 2264: a study based on CoRoT photometric observations [PDF]

, 2013
Rotation is one of the key stellar parameters which undergo substantial evolution during the stellar lifetime, in particular during the early stages.
Affer, Laura, Bouvier, Jerome, Favata, Fabio, Flaccomio, Ettore, Micela, Giuseppina   +4 more
core   +1 more source

The Ca ii Lines as Tracers of Disk Structure in T Tauri Stars: The Chamaeleon I Region

The Astrophysical Journal, 2023
We present a study of the Ca ii K and IR triplet lines in a sample of classical T Tauri stars in the Chamaeleon I star-forming region. We study X-shooter spectra of the stars in the sample and find that in some of these stars the Ca ii lines are much ...
Marbely Micolta, Nuria Calvet, Thanawuth Thanathibodee, Gladis Magris C., María José Colmenares, Jesús V. Díaz, Jairo Alzate-Trujillo   +6 more
doaj   +1 more source

XMM-Newton observations of the sigma Ori cluster. II. Spatial and spectral analysis of the full EPIC field

, 2005
We present the results of an XMM-Newton observation of the young (~2-4 Myr) cluster around the hot star sigma Orionis. In a previous paper we presented the analysis of the RGS spectrum of the central hot star; here we discuss the results of the analysis ...
Argiroffi, Argiroffi, Baraffe, Barrado y Navascués, Barrado y Navascués, Barrado y Navascués, Berghöfer, Brown, Burningham, Béjar, Béjar, Béjar, Caballero, Damiani, E. Franciosini, Favata, Feigelson, Feigelson, Flaccomio, Flaccomio, Flaccomio, Flaccomio, Gagné, Garmire, Garmire, Getman, Hasinger, Hesser, Imanishi, Imanishi, J. Sanz-Forcada, Kastner, Kastner, Kenyon, Kenyon, Lavalley, Lee, Leggett, Martín, Mokler, Muzerolle, Neuhäuser, Oliveira, Oliveira, Oliveira, Ozawa, Pallavicini, Preibisch, Preibisch, Preibisch, R. Pallavicini, Ramírez, Randich, Sanz-Forcada, Scelsi, Schmitt, Scholz, Sherry, Siess, Skinner, Stassun, Stelzer, Stelzer, Stelzer, Stelzer, Tozzi, Walter, Weaver, Zapatero Osorio, Zapatero Osorio   +69 more
core   +1 more source

Probable association of T Tauri stars with the L1014 dense core [PDF]

, 2006
Using the Wide Field Grism Spectrograph 2 (WFGS2), we have carried out slit-less spectroscopy, g'r'i' photometry, and slit spectroscopy on the L1014 dense core. We detected three Halpha emission line stars.
Ebizuka, Noboru, Hasegawa, Takashi, Itoh, Yoichi, Kinugasa, Kenzo, Morita, Atsuko, Nagashima, Chie, Sugitani, Koji, Tamura, Motohide, Uehara, Mariko, Watanabe, Makoto   +9 more
core   +2 more sources

Modelling the magnetic activity and filtering radial velocity curves of young Suns : the weak-line T Tauri star LkCa 4 [PDF]

, 2014
We report results of a spectropolarimetric and photometric monitoring of the weak-line T Tauri star LkCa4 within the MaTYSSE programme, involving ESPaDOnS at the Canada-France-Hawaii Telescope.
J. Donati, É. Hébrard, G. Hussain, C. Moutou, K. Grankin, I. Boisse, J. Morin, S. Gregory, A. Vidotto, J. Bouvier, S. Alencar, X. Delfosse, R. Doyon, M. Takami, M. Jardine, R. Fares, A. Cameron, F. Ménard, C. Dougados, G. Herczeg, the MaTYSSE collaboration   +20 more
semanticscholar   +1 more source

Culture, Connection and Care: The Role of Institutional Justice Capital for Enhancing the Wellbeing of Aboriginal and Torres Strait Islander Children in Out‐Of‐Home Care

Australian Journal of Social Issues, EarlyView.
ABSTRACT Ensuring that Aboriginal and Torres Strait Islander children removed from their families by child protection services remain connected to their kin, Country and culture is a priority to begin to redress the intergenerational trauma and harm caused by colonisation.
Sharynne Hamilton, Larissa Jones, Millie Penny, Charmaine Pell, Sarah Maslen, Carol Michie, Raewyn Mutch, Melissa O’Donnell, Carrington Shepherd, Brad Farrant   +9 more
wiley   +1 more source