Results 91 to 100 of about 7,097 (207)

Accretion Disks Around Young Objects. II. Tests of Well-Mixed Models with Ism Dust [PDF]

, 1999
We construct detailed vertical structure models of irradiated accretion disks around T Tauri stars with interstellar medium dust uniformly mixed with gas. The dependence of the structure and emission properties on mass accretion rate, viscosity parameter,
Calvet N., Friedjung M., Jorge Canto, Kawazoe E., Lee Hartmann, Leinert Ch., Lynden-Bell D., Nakano T., Nuria Calvet, Osterloh M., Paola D’Alessio, Shakura N. I., Susana Lizano, Wood K.   +13 more
core   +2 more sources

Ethical mediation: Navigating research ethics and frictions in overseas fieldwork

Area, Volume 57, Issue 4, December 2025.
Short Abstract This paper problematises the application of UK‐based research ethics policy for overseas fieldwork. It draws on the fieldwork experiences of two researchers affiliated with UK universities and conducting fieldwork overseas in their home country.
Sandra Hiari, Maiss Razem
wiley   +1 more source

Observational Constraints on the Formation and Evolution of Binary Stars [PDF]

, 2001
We present a high spatial resolution UV to NIR survey of 44 young binary stars in Taurus with separations of 10-1000 AU. The primary results include: (1) The relative ages of binary star components are more similar than the relative ages of randomly ...
A. M. Ghez, Baraffe I., Bastien P., Bate M. R., Bertout C., Boss A. P., Bouvier J., Brandner W., Duchene G., Duchene G., Duquennoy A., Dutrey A., Dutrey A., Duvert G., Gahm G. F., Guilloteau S., Haas M., Hall S. M., Herbig G. H., Hessman F. V., Kohler R., Labeyrie A., Leinert Ch., Leinert Ch., Magazzu A., Martin E. L., Moneti A., Monin J.-L., Monin J.-L., Preibisch T., R. J. White, Reipurth B., Rice J. B., Richichi A., Sartoretti P., Schwartz R. D., Wichmann R., Woitas J.   +37 more
core   +3 more sources

XMM-Newton X-ray spectroscopy of classical T Tauri stars [PDF]

Astronomy & Astrophysics, 2006
We present results from a comparative study of XMM-Newton observations of four classical T Tauri stars (CTTS), namely BP Tau, CR Cha, SU Aur and TW Hya. In these objects coronal, i.e. magnetic, activity and as recently shown, magnetically funneled accretion are the processes likely to be responsible for the generation of X-ray emission.
Robrade, J., Schmitt, J. H. M. M.
openaire   +2 more sources

COSMOPOLITAN PHILOLOGY AND SACRED GRAMMAR

History and Theory, Volume 64, Issue 4, Page 109-126, December 2025.
ABSTRACT Persian developed a formal grammatical tradition comparatively late in its thousand‐year history as a lingua franca. This article takes up the emergence of Persian grammar within the larger trajectory of Persian philology. It explores questions about why and when such a tradition developed in Persian by closely analyzing the earliest formal ...
ALEXANDER JABBARI
wiley   +1 more source

The magnetosphere of the close accreting PMS binary V4046 Sgr

EPJ Web of Conferences, 2014
V4046 Sagittarii AB is a close short-period classical T Tauri binary. It is a circularised and synchronised system accreting from a circumbinary disk.
Gregory S. G., Holzwarth V. R., Donati J.-F., Hussain G. A. J., Montmerle T., Alecian E., Alencar S. H. P., Argiroffi C., Audard M., Bouvier J., Damiani F., Güdel M., Huenemoerder D. P., Kastner J. H., Maggio A., Sacco G. G., Wade G. A.   +16 more
doaj   +1 more source

Coronal structure of the classical T Tauri star V2129 Oph [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The nature of the magnetic coupling between T Tauri stars and their discs determines not only the mass accretion process but possibly the spin evolution of the central star. We have taken a recently published surface magnetogram of one moderately accreting T Tauri star (V2129 Oph) and used it to extrapolate the geometry of its large-scale field.
Jardine, M. M., Gregory, S. G., Donati, J.-F.   +2 more
openaire   +3 more sources

Assessment of genetically modified oilseed rape LBFLFK (application EFSA‐GMO‐DE‐2019‐157)

EFSA Journal, Volume 23, Issue 11, November 2025.
Abstract Application EFSA‐GMO‐DE‐2019‐157 (oilseed rape LBFLFK) was submitted to EFSA to be risk assessed as full‐scope, i.e. for import, processing, and food and feed uses, within the EU. Oilseed rape LBFLFK was developed to alter its fatty acid profile and to confer tolerance to imidazolinone herbicides.
EFSA Panel on Genetically Modified Organisms (GMO), Josep Casacuberta, Francisco Barro, Albert Braeuning, Ruud de Maagd, Michelle M. Epstein, Thomas Frenzel, Jean‐Luc Gallois, Frits Koning, Antoine Messéan, F. Javier Moreno, Fabien Nogué, Giovanni Savoini, Alan H. Schulman, Christoph Tebbe, Eve Veromann, Michele Ardizzone, Martina Bonatti, Giacomo De sanctis, Silvia Federici, Antonio Fernandez Dumont, Arianna Ferrari, Andrea Gennaro, Tilemachos Goumperis, Dafni Maria Kagkli, Paolo Lenzi, Aleksandra Lewandowska, Ana M. Camargo, Franco Maria Neri, Nikoletta Papadopoulou, Pietro Piffanelli, Tommaso Raffaello, Reinhilde Schoonjans, José Ángel Gómez Ruiz   +33 more
wiley   +1 more source

Role of local absorption on the X-ray emission from MHD accretion shocks in classical T Tauri stars

EPJ Web of Conferences, 2014
Accretion processes onto classical T Tauri stars (CTTSs) are believed to generate shocks at the stellar surface due to the impact of supersonic downflowing plasma.
Bonito , Orlando , Argiroffi , Miceli , Reale , Peres , Matsakos , Stehle , Ibgui   +8 more
doaj   +1 more source

Infrared study of the eta Chamaeleontis cluster and the longevity of circumstellar discs [PDF]

, 2002
We have analyzed JHKL observations of the stellar population of the ~9 Myr-old eta Chamaeleontis cluster. Using infrared (IR) colour-colour and colour-excess diagrams, we find the fraction of stellar systems with near-IR excess emission is 0.60 pm 0.13 ...
A.-Ran Lyo, Alcalá, Balona, Barnes, Bessell, Bessell, Bouvier, Carter, Carter, Clarke, Clausen, Eon-Chang Sung, Eric D. Feigelson, Eric E. Mamajek, Feigelson, Greene, Haisch, Haisch, Hartmann, Hillenbrand, Hillenbrand, Hollenbach, Kenyon, Kenyon, Koornneef, Köhler, Lada, Lawson, Lawson, Lawson, Lawson, Lisa A. Crause, Mamajek, Mamajek, Mamajek, McGregor, Muzerolle, Rebull, Shu, Siess, Strom, Telesco, Tinker, Warrick A. Lawson, Westin, Wolk   +45 more
core   +2 more sources