Results 171 to 180 of about 46,048 (306)

Haro 5-2: A New Pre-main-sequence Quadruple Stellar System

The Astronomical Journal
We have discovered that the H α emission-line star Haro 5-2, located in the 3–6 Myr old Ori OB1b association, is a young quadruple system. The system has a 2+2 configuration, with an outer separation of 2.″6 and with resolved subarcsecond inner binary ...
Bo Reipurth, C. Briceño, T. R. Geballe, C. Baranec, S. Mikkola, A. M. Cody, M. S. Connelley, C. Flores, B. A. Skiff, J. D. Armstrong, N. M. Law, R. Riddle   +11 more
doaj   +1 more source

Chromospheric Properties of T Tauri Stars Determined from EUV Spectra [PDF]

, 1983
A. M. Brown, C. Jordan
openalex   +1 more source

Automated CCD photometry of T Tauri stars [PDF]

, 1992
Matthew J. Richter, Gibor Basri, S. Perlmutter, C. Pennypacker   +3 more
openalex   +1 more source

Gone with the Molecular Wind: Photoevaporation in the Compact Dust Disk around CX Tau

The Astrophysical Journal
We present Keck NIRSPEC+AO high-resolution ( R ∼ 25,000), mid-infrared ( M -band: 4.6–5.2 μ m) spectra of the protoplanetary disk CX Tau. CX Tau provides an ideal laboratory to study inner disk chemistry in a disk where the signs of radial drift of ...
Alexa R. Anderson, Jonathan P. Williams, Geoff A. Blake, Klaus M. Pontoppidan, Colette Salyk, A. C. Adwin Boogert, Clara Ross, L. Ilsedore Cleeves   +7 more
doaj   +1 more source

Using the Ca ii Lines in T Tauri Stars to Infer the Abundance of Refractory Elements in the Innermost Disk Region

The Astrophysical Journal
We present a study of the abundance of calcium in the innermost disk of 70 T Tauri stars in the star-forming regions of Chamaeleon I, Lupus, and Orion OB1b. We use calcium as a proxy for the refractory material that reaches the inner disk.
Marbely Micolta, Nuria Calvet, Thanawuth Thanathibodee, Gladis Magris C., Carlo F. Manara, Laura Venuti, Juan Manuel Alcalá, Gregory J. Herczeg   +7 more
doaj   +1 more source

The evolution and function of the PSEUDO RESPONSE REGULATOR gene family in the plant circadian clock. [PDF]

Genet Mol Biol, 2022
Hotta CT.
europepmc   +1 more source

Near Infrared Polarimetry of Dark Clouds and Star Forming Regions - Two Micron Polarization Survey of T Tauri Stars [PDF]

, 1990
Motohide Tamura, S. Sato
openalex   +1 more source

T Tauri stars and flare stars: common properties and differences [PDF]

, 1990
I. Appenzeller
openalex   +1 more source

A Multiwavelength, Multiepoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. II. Photometric Light Curves

The Astrophysical Journal
Classical T Tauri stars (CTTSs) are young, low-mass stars that accrete material from their surrounding protoplanetary disk. To better understand accretion variability, we conducted a multiepoch, multiwavelength photometric monitoring campaign of four ...
John Wendeborn, Catherine C. Espaillat, Thanawuth Thanathibodee, Connor E. Robinson, Caeley V. Pittman, Nuria Calvet, Ágnes Kóspál, Konstantin N. Grankin, Fredrick M. Walter, Zhen Guo, Jochen Eislöffel   +10 more
doaj   +1 more source

Dust dynamics in planet-forming discs in binary systems. [PDF]

Eur Phys J Plus, 2023
Zagaria F, Rosotti GP, Alexander RD, Clarke CJ.   +3 more
europepmc   +1 more source