Results 131 to 140 of about 7,097 (207)

Igneous processes in the small bodies of the Solar System I. Asteroids and comets. [PDF]

iScience, 2023
Leone G, Tanaka HKM.
europepmc   +1 more source

A Spectroastrometric Study of the Low-velocity Wind from DG Tau A

The Astrophysical Journal
We obtained high-spectral resolution spectra (Δ v ∼ 2.5 km s ^−1 ) for DG Tau A from 4800 Å to 7500 Å using Subaru High Dispersion Spectrograph for the first time. The low-velocity components (LVCs, ∣ v ∣ < 100 km s ^−1 ) were observed in the [O I ] 5577,
Yu-Ru Chou, Michihiro Takami, Shin-Ping Lai, Emma Whelan, Noah B. Otten, Min Fang, Akito Tajitsu, Masaaki Otsuka, Hsien Shang, Chun-Fan Liu, Jennifer Karr, Aisling Murphy   +11 more
doaj   +1 more source

Measuring the Spot Variability of T Tauri Stars Using Near-infrared Atomic Fe and Molecular OH Lines

The Astrophysical Journal
As part of the Young Exoplanets Spectroscopic Survey, this study explores the spot variability of 13 T Tauri Stars (TTSs) in the near-infrared H band, using spectra from the Immersion GRating INfrared Spectrometer.
Shih-Yun Tang, Christopher M. Johns-Krull, L. Prato, Asa G. Stahl   +3 more
doaj   +1 more source

A Tale of Two Stars: X-Ray and Ground-based Observations of Two Diverging Stars in Taurus–Auriga

The Astrophysical Journal
We present XMM-Newton observations and near-simultaneous optical observations of the classical T Tauri star SU Auriga and the nearby Herbig Ae star AB Auriga, two members of the 4 Myr old Taurus–Auriga star-forming region.
Mackenna L. Wood, Hans Moritz Günther, P. C. Schneider, Scott J. Wolk   +3 more
doaj   +1 more source

Laboratory disruption of scaled astrophysical outflows by a misaligned magnetic field. [PDF]

Nat Commun, 2021
Revet G, Khiar B, Filippov E, Argiroffi C, Béard J, Bonito R, Cerchez M, Chen SN, Gangolf T, Higginson DP, Mignone A, Olmi B, Ouillé M, Ryazantsev SN, Skobelev IY, Safronova MI, Starodubtsev M, Vinci T, Willi O, Pikuz S, Orlando S, Ciardi A, Fuchs J.   +22 more
europepmc   +1 more source

Unveiling the Dual Nature of V1180 Cas: UXor-like Dips and EXor-like Bursts across a Decade

The Astrophysical Journal
We present a detailed analysis of the long-term photometric and spectroscopic evolution of V1180 Cas over a decade, aiming to identify the dominant mechanisms behind its variability. We combine multiband light curves from 1999 to 2025 with over 30 epochs
Tarak Chand, Saurabh Sharma, Koshvendra Singh, Joe P. Ninan, Arpan Ghosh, Devendra K. Ojha, Tapas Baug, D. K. Sahu, Bhuwan C. Bhatt, Pramod Kumar, Ram K. Yadav, Neelam Panwar, Aayushi Verma, Harmeen Kaur, Mamta, Manojit Chakraborty, Kartik Gokhe, Ajay Kumar Singh   +17 more
doaj   +1 more source

Prevalence of Linda Virus Neutralizing Antibodies in the Austrian Pig Population. [PDF]

Viruses, 2021
Kiesler A, Plankensteiner J, Schwarz L, Riedel C, Seitz K, Mötz M, Ladinig A, Lamp B, Rümenapf T.   +8 more
europepmc   +1 more source

A Multiwavelength, Multiepoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. III. Optical Spectra

The Astrophysical Journal
Classical T Tauri Stars (CTTSs) are highly variable stars that possess gas- and dust-rich disks from which planets form. Much of their variability is driven by mass accretion from the surrounding disk, a process that is still not entirely understood.
John Wendeborn, Catherine C. Espaillat, Thanawuth Thanathibodee, Connor E. Robinson, Caeley V. Pittman, Nuria Calvet, James Muzerolle, Fredrick M. Walter, Jochen Eislöffel, Eleonora Fiorellino, Carlo F. Manara, Ágnes Kóspál, Péter Ábrahám, Rik Claes, Elisabetta Rigliaco, Laura Venuti, Justyn Campbell-White, Pauline McGinnis, Manuele Gangi, Karina Mauco, Filipe Gameiro, Antonio Frasca, Zhen Guo   +22 more
doaj   +1 more source

The Pre-outburst Properties of the FU Ori Object HBC 722

The Astrophysical Journal Letters
FU Ori outbursts are thought to play an important role in stellar assembly and the evolution of protoplanetary disks. However, the progenitor young stellar objects are largely uncharacterized.
Gregory J. Herczeg, Bo Reipurth
doaj   +1 more source

Magnetic reconnection in partially ionized plasmas. [PDF]

Proc Math Phys Eng Sci, 2020
Ni L, Ji H, Murphy NA, Jara-Almonte J.
europepmc   +1 more source