Results 31 to 40 of about 14,581 (202)
SPECTROPOLARIMETRY OF THE CLASSICAL T TAURI STAR BP TAU [PDF]
The Astrophysical Journal, 2012 We implement a least-squares deconvolution (LSD) code to study magnetic fields on cool stars. We first apply our code to high resolution (R ≈ 60,000) optical echelle spectra of several solar-like stars as tests of the code and to measure the mean longitudinal magnetic field on the surface of these stars.
Chen, Wei, Johns-Krull, Christopher M.
openaire +4 more sources
Spectral Energy Distributions of Passive T Tauri Disks: Inclination [PDF]
, 1998 We compute spectral energy distributions (SEDs) for passive T Tauri disks viewed at arbitrary inclinations. Semi-analytic models of disks in radiative and hydrostatic equilibrium are employed. Over viewing angles for which the flared disk does not occult
Chiang, E. I., Goldreich, P.
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HOT GAS LINES IN T TAURI STARS [PDF]
The Astrophysical Journal Supplement Series, 2013 ABSTRACT For Classical T Tauri Stars (CTTSs), the resonance doublets of N v, Si iv, and C iv, as well as the He ii 1640 Å line, trace hot gas flows and act as diagnostics of the accretion process. In this paper we assemble a large high-resolution, high-sensitivity data set of these lines in CTTSs and Weak T Tauri Stars (WTTSs).
Ardila, David +22 more
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Gendering Late Ottoman Society and Reconstructing Gender in the Women's Press
Gender &History, EarlyView.ABSTRACT This article analyses the construction of gender differences in the late Ottoman Empire through women's periodicals, which acted as a key medium in the redefinition of gender roles. It examines how new understandings of gender roles emerged amid rapid transformations in traditional societal structures, particularly in the women’s press.
Tuğba Karaman
wiley +1 more source
Inclination effects in T Tauri star spectra [PDF]
, 2013 CONTEXT. Because of the presence of rotation and accretion disks, classical T Tauri stars have symmetry planes that are normally inclined relative to the plane of the sky.
Appenzeller, Immo, Bertout, Claude
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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
The Astronomical Journal, 1993 We present an atlas of 96 low dispersion spectra of T Tauri stars, both classical and weak-lined. The flux-calibrated spectra extend from Hβ to well blueward of the Balmer jump. Observed equivalent widths and rough blue veilings are presented. We model stars with excess emission as a combination of a weak-lined T Tauri star of a similar spectral type ...
Christopher M. Johns +2 more
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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
Antinomies of Alignment Redux: The United Arab Emirates and the United States
Middle East Policy, EarlyView.Abstract Over the past three decades, the United Arab Emirates has forged a sturdy bilateral security alignment with the United States. It has also pursued foreign policies that conflict with US interests in the Gulf and the broader Middle East. This contradiction is usually attributed to a hedging strategy.
Fred H. Lawson, Matteo Legrenzi
wiley +1 more source
, 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 +93 more
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