Results 41 to 50 of about 206 (176)
Proper motion studies of outflows from Classical T Tauri stars [PDF]
Astronomy & Astrophysics, 2007 In a previous paper (McGroarty & Ray 2004, 420, 975) we examined the environment of a number of evolved low-mass young stars, i.e. Classical T Tauri Stars, to see if they are capable of driving parsec-scale outflows. These stars - CW Tau, DG Tau, DO Tau, HV Tau C and RW Aur - were previously known to drive only "micro-jets" or small-scale outflows ...
McGroarty, F., Ray, T. P., Froebrich, D.
openaire +2 more sources
The Astrophysical JournalAn accurate estimation of the continuum excess emission from accretion spots and inner circumstellar disk regions is crucial for a proper derivation of fundamental stellar parameters in accreting systems.
Facundo Pérez Paolino +4 more
doaj +1 more source
Noûs, Volume 60, Issue 3, Page 593-605, September 2026.ABSTRACT It is a truism of mathematics that differences between isomorphic number systems are irrelevant to arithmetic. This truism is deeply rooted in the modern axiomatic method and underlies most strands of arithmetical structuralism, the view that arithmetic is about some abstract number structure.
Balthasar Grabmayr
wiley +1 more source
Keck Interferometer Observations of Classical and Weak‐line T Tauri Stars [PDF]
The Astrophysical Journal, 2005 We present observations of the T Tauri stars BP Tau, DG Tau, DI Tau, GM Aur, LkCa 15, RW Aur and V830 Tau, using long baseline infrared interferometry at K band (2.2 microns) from the Keck Interferometer. The target sources have a range of mass accretion rates and excess near-infrared emission.
Akeson, R. L. +11 more
openaire +2 more sources
Rotational Evolution of Classical T Tauri Stars: Models and Observations
The Astrophysical JournalWe developed a grid of stellar rotation models for low-mass and solar-type classical T Tauri stars (CTTS; 0.3 M _⊙ < M _* < 1.2 M _⊙ ). These models incorporate the star–disk interaction and magnetospheric ejections to investigate the evolution of the ...
Javier Serna +19 more
doaj +1 more source
Clustering Properties of Intermediate and High-mass Young Stellar Objects
The Astronomical Journal, 2023 We have selected 337 intermediate- and high-mass young stellar objects (YSOs; 1.5–20 M _⊙ ) well-characterized with spectroscopy. By means of the clustering algorithm HDBSCAN, we study their clustering and association properties in the Gaia DR3 catalog ...
Miguel Vioque +8 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 +9 more
wiley +1 more source
Lithium abundances in classical and weak T Tauri stars
The Astrophysical Journal, 1992 A study on the lithium abundance in 36 T Tauri stars (mass range 0.4-2.25 M ⊙ ), partly based on high-dispersion spectra taken with the Isaac Newton Telescope, is presented. Veiling effects have been taken into account when measuring the Li I λ670.8 nm doublet equivalent width.
Antonio Magazzu +2 more
openaire +1 more source
Another deep dimming of the classical T Tauri star RW Aurigae A [PDF]
Astronomy & Astrophysics, 2015 5 pages, 5 figures, Accepted for publication in A& ...
Petrov, P. P. +5 more
openaire +2 more sources
ABYSS. III. Observing Accretion Activity in Young Stars Through Empirical Veiling Measurements
The Astronomical JournalStellar accretion plays an important role in the early stages of stellar evolution, particularly in Classical T Tauri Stars (CTTSs). Accretion of a CTTS can be related to different physical parameters such as effective temperature ( T _eff ), age ...
Serat Saad +7 more
doaj +1 more source