Results 91 to 100 of about 57,378 (307)

A Comprehensive Analysis of Rovibrational CO in the Era of JWST

The Astronomical Journal
We present an analysis of CO rovibrational emission lines in the 183 infrared spectra of nearby Class II objects obtained with the NIRSPEC instrument on the Keck II telescope over the past two decades.
D. Annie Dickson-Vandervelde, Colette Salyk, Geoffrey A. Blake, Clara Ross, Adwin Boogert, Klaus Pontoppidan   +5 more
doaj   +1 more source

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

Discovery of a bipolar X-ray jet from the T Tauri star DG Tauri [PDF]

, 2007
Aims. We have obtained and analyzed Chandra ACIS-S observations of the strongly accreting classical T Tauri star DG Tau. Our principal goals are to map the immediate environment of the star to characterize possible extended X-rays formed in the jet, and ...
M. Güdel, M. Güdel, M. Güdel, S. Skinner, M. Audard, K. Briggs, S. Cabrit   +6 more
semanticscholar   +1 more source

Dynamics of magnetic flux tubes in accretion disks of Herbig Ae/Be stars

Open Astronomy, 2022
The dynamics of magnetic flux tubes (MFTs) in the accretion disk of typical Herbig Ae/Be star (HAeBeS) with fossil large-scale magnetic field is modeled taking into account the buoyant and drag forces, radiative heat exchange with the surrounding gas ...
Khaibrakhmanov Sergey A., Dudorov Alexander E.   +1 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

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

Non-stationary dynamo and magnetospheric accretion processes of the classical T Tauri star V2129 Oph [PDF]

, 2010
We report here the first results of a multiwavelength campaign focussing on magnetospheric accretion processes of the classical T Tauri star V2129 Oph. In this paper, we present spectropolarimetric observations collected in 2009 July with ESPaDOnS at the
J. Donati, J. Bouvier, F. Walter, S. Gregory, M. Skelly, G. Hussain, E. Flaccomio, C. Argiroffi, K. Grankin, M. Jardine, F. Ménard, C. Dougados, M. Romanova, the MaPP collaboration   +13 more
semanticscholar   +1 more source

Wind from T Tauri Stars [PDF]

Publications of the Astronomical Society of Japan, 1998
Previously, it was shown by DeCampli that an isothermal wind of T Tauri stars cannot explain both the mass-loss rates and X-ray observations. Since the assumption of an isothermal wind does not hold in general, we recalculated the structure of a steady and spherically symmetric stellar wind, taking the heating luminosity and its range as input ...
Masayoshi Kiguchi, Shinji Narita, Chushiro Hayashi   +2 more
openaire   +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

The multiplicity of T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius: A 2.2 micron speckle imaging survey [PDF]

, 1993
We present the results of a magnitude limited (K < =8.5 mag) speckle imaging survey of 69 T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius. Thirty-three companion stars were found with separations ranging from 0."07 to 2."5;
Ghez, A. M., Matthews, K., Neugebauer, G.   +2 more
core