Results 81 to 90 of about 10,538,954 (217)

Stellar wind flows in T Tauri stars [PDF]

Symposium - International Astronomical Union, 1987
Following the successful modelling of the wind from RU Lupi using data at moderate and high dispersion we report on similar observations of other T Tauri stars where the general pattern of the wind, as deduced from the widths of the emission lines of the various species, seems to be similar.
C. Sá, M. T. V. T. Lago, M. V. Penston
openaire   +1 more source

Modeling the Curved Dust Sublimation Front in Protoplanetary Disks: A Potential Probe of Midplane Turbulence

The Astrophysical Journal
We present a new approach to calculate the geometry and emission of the dust inner wall in disks around T Tauri stars. This calculation follows a self-consistent approach given the disk structure and adopts a density-dependent sublimation temperature for
Ezequiel Manzo-Martínez, Ramiro Franco Hernández, Nuria Calvet, Jesús Hernández, Paola D’Alessio, Rosa M. Torres   +5 more
doaj   +1 more source

A LAMOST Spectroscopic Study of T Tauri Stars in the Orion OB1a Subassociation

The Astronomical Journal, 2023
We present a spectroscopic analysis of T Tauri stars (TTSs) observed with the wide-field multifiber spectrograph LAMOST in the substellar associations Ori OB1a located in the Orion Star-forming Complex.
Jesús Hernández, Luisa F. Zamudio, César Briceño, Nuria Calvet, Zhaohuan Zhu, Haibo Yuan, Xiaowei Liu, Ezequiel Manzo-Martínez, Carlos G. Román-Zúñiga, Javier Serna, Karina Maucó, Lucía Adame   +11 more
doaj   +1 more source

The algal homolog of the plant CER1 and CER3 proteins is a bifunctional hydrocarbon‐forming enzyme

New Phytologist, Volume 251, Issue 3, Page 1311-1328, August 2026.
Schematic representation of the proposed reactions carried out by a CER1/3 protein from green algae. CoA, coenzyme A; CTD, C‐terminal domain; Cys, catalytic cysteine of C‐terminal domain; His, catalytic histidines of N‐terminal domain; NTD, N‐terminal domain.
Ángel Baca‐Porcel, Bertrand Légeret, Alexandre Six, Mallaury Cabanel, Mathilde Le Cossec, Arthur Guegano, Damien Sorigué, Yonghua Li‐Beisson, Florian Veillet, Fred Beisson   +9 more
wiley   +1 more source

Unveiling extremely veiled T Tauri stars [PDF]

Astronomy & Astrophysics, 2008
Photospheric absorption lines in classical T Tauri stars (CTTS) are weak compared to normal stars. This so-called veiling is normally identified with an excess continuous emission formed in shock-heated gas at the stellar surface below the accretion streams.
Gahm, G. F., Walter, F. M., Stempels, H. C., Petrov, P. P., Herczeg, G. J.   +4 more
openaire   +3 more sources

Interaction between Winds from Weak-lined T Tauri Stars with Exoplanetary Magnetospheres

The Astrophysical Journal
T Tauri stars, in more advanced stages of evolution, during the final accretion phase of stellar formation, exhibit intense stellar winds and surface magnetic fields with intensities around a kilogauss.
Yasmmin F. Tamburus, Natália F. S. Andrade, Guilherme R. C. Sampaio, Vera Jatenco-Pereira   +3 more
doaj   +1 more source

Making fish oils in plants: from alpha to omega

New Phytologist, Volume 251, Issue 3, Page 1013-1018, August 2026.
Schematic representation of the biosynthetic pathway for the synthesis of omega‐3 long‐chain polyunsaturated fatty acids. The sequential transgene‐encoded activities required to convert endogenous fatty acids to the longer chain polyunsaturated forms of eicosapentaenoic acid and docosahexaenoic acid are shown in red.
Johnathan A. Napier
wiley   +1 more source

Rotational Velocities and Radii Estimates of Low-mass Pre-main-sequence Stars in NGC 2264

The Astrophysical Journal
Investigating the angular momentum evolution of pre-main-sequence (PMS) stars provides important insight into the interactions between Sun-like stars and their protoplanetary disks, and the timescales that govern disk dissipation and planet formation. We
Laurin M. Gray, Katherine L. Rhode, Catrina M. Hamilton-Drager, Tiffany Picard, Luisa M. Rebull   +4 more
doaj   +1 more source

Oscillations of the Boundary Layer and High-frequency QPOs

EPJ Web of Conferences, 2014
We observed persistent high-frequency oscillations of the boundary layer near an accreting, weakly-magnetized star in global 3D MHD simulations. The tilted dipole magnetic field is not strong enough to open a gap between the star and the disk.
Blinova A. A., Bachetti M., Romanova M. M.   +2 more
doaj   +1 more source

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, Volume 347, Issue 6, July 2026.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source