Results 81 to 90 of about 45,569 (296)
Doppler Probe of Accretion onto a T Tauri star [PDF]
, 2014 The YY Ori stars are T Tauri stars with prominent time-variable redshifted absorption components that flank certain emission lines. One of the brightest in this class is S CrA, a visual double star. We have obtained a series of high-resolution spectra of
Gahm, Gösta +4 more
core +1 more source
Haunting the Historiography of Slaves in South Asia from the nineteenth century to the present
Gender &History, EarlyView.ABSTRACT Using both English and Urdu‐language records, this article traces the career of a few African and Afro‐Asian women slaves in the household‐state of Awadh during the first half of the nineteenth century. Focusing on the same records, this article compares a master‐poet's recognition of the motherhood of the African and Afro‐Asian slaves to the ...
Indrani Chatterjee
wiley +1 more source
A Model of the C iv λ λ1548, 1550 Doublet Line in T Tauri Stars
The Astrophysical JournalThe C iv doublet in the UV has long been associated with accretion in T Tauri stars. However, it is still unclear where and how the lines are formed. Here, we present a new C iv line model based on the currently available accretion shock and accretion ...
Thanawuth Thanathibodee +9 more
doaj +1 more source
Sodium ionization in T-tauri stars [PDF]
International Astronomical Union Colloquium, 1989 We present the results of a study of the sodium ionization and excitation in the winds of low-luminosity, pre-main-sequence stars. Line profiles for the Nal doublet at 5990,5986 Åare discussed and compared with the observations for those T Tauri stars with P-Cygni profiles.
A. Natta, C. Giovanardi
openaire +2 more sources
Very Low Mass Stars and Brown Dwarfs in Taurus-Auriga
, 2002 We present high resolution optical spectra obtained with the HIRES spectrograph on the Keck I telescope of low mass T Tauri stars and brown dwarfs (LMTTs) in Taurus-Auriga.
Baraffe I. +12 more
core +1 more source
Ethical mediation: Navigating research ethics and frictions in overseas fieldwork
Area, EarlyView.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
THE MAGNETIC FIELD IMPACT ON ACCRETION RATE IN A PROTOPLANETARY DISK
Odessa Astronomical Publications, 2012 Recent observations are the evidence of a large-scale magnetic field in discs around classical T Tauri stars. A model of the axisymmetric thin protoplanetary disk in a global magnetic field is considered.
M. M. Kuksa
doaj +1 more source
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
A Predicted Great Dimming of T Tauri: Has it Begun?
The Astronomical JournalThe optical star in the T Tauri triple system is the prototype of young Sun-like stars in our galaxy. This complex and dynamic system has evidence for misaligned disks and outflows, and molecular material in a circumbinary ring that obscures the southern
Tracy L. Beck
doaj +1 more source
, 2016 Most existing studies of the angular momentum evolution of young stellar populations have focused on the youngest (1-3 Myr) T Tauri stars. In contrast, the angular momentum distributions of older T Tauri stars (4-10 Myr) have been less studied, even ...
Aarnio, Alicia +17 more
core +1 more source