Results 101 to 110 of about 12,706 (233)

Tidal Formation of Dark Matter Deficit Diffuse Galaxy NGC 1052-DF2 by SIDM

The Astrophysical Journal
Observations have revealed a significant dark matter deficit in the ultradiffuse galaxy NGC 1052-DF2 (DF2). It is widely accepted that the formation of this unique galaxy can be attributed to the tidal stripping of its host galaxy, NGC 1052.
Zhao-Chen Zhang, Xiao-Jun Bi, Peng-Fei Yin   +2 more
doaj   +1 more source

The origin of gas stripping of galaxies in group environments

Astronomy & Astrophysics
We investigate how low-mass group environments (Mvir ∼ 1012 − 13 M⊙) influence the gas content of their satellite galaxies with M* > 107 M⊙ using the NEWHORIZON2 simulation.
Rhee Jinsu, Pichon Christophe, Dubois Yohan, Yi Sukyoung K., Ko Jongwan, Sheen Yun-Kyeong, Han San, Jeon Seyoung, Jang J. K., Lee Wonki, Contini Emanuele, Lee Bumhyun, Lee Jaehyun, Kraljic Katarina, Peirani Sébastien   +14 more
doaj   +1 more source

Impact of the invasive diatom species Cymbella janischii on riverine microbial biofilm communities and a potential role of bacterially produced zeatin

Journal of Phycology, EarlyView.
Abstract The diatom Cymbella janischii is an invasive species in Japan, causing nuisance blooms by forming thick mats in rivers. To date, there are no documented studies on the microbiome associations in C. janischii mats or the processes that drive bloom formation.
Eldrin D. L. R. Arguelles, Kana Mugikura, Shinya Sato   +2 more
wiley   +1 more source

DDO 68-C: HST Confirms Yet Another Companion of the Isolated Dwarf Galaxy DDO 68

The Astrophysical Journal
We present the results of deep Hubble Space Telescope photometry of the dwarf galaxy DDO 68-C, proposed as possibly associated with the isolated peculiar dwarf DDO 68.
Matteo Correnti, Francesca Annibali, Michele Bellazzini, Mariarosa Marinelli, Alessandra Aloisi, Michele Cignoni, Monica Tosi, Raffaele Pascale, John M. Cannon, Lila Schisgal, Leslie K. Hunt, Elena Sacchi, Sangmo Tony Sohn   +12 more
doaj   +1 more source

A study of galaxy interactions

, 2014
This work describes the in-depth study of two systems of interacting galaxies, namely Arp 10 and VII Zw466. Both systems belong to a special group of interacting galaxies known as collisional ring and ring-like galaxies. A typical ring galaxy emerges when a companion galaxy passes through or near the center of a larger rotating disk galaxy driving ring-
openaire   +3 more sources

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, EarlyView.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Nanoscale space weathering features in mature lunar soil revealed by TEM and APT

Meteoritics &Planetary Science, EarlyView.
Abstract Space weathering significantly alters the optical, chemical, and structural properties of lunar regolith at micro‐ and nanoscales; yet detailed nanoscale variability within individual soils remains underexplored. Here we apply transmission electron microscopy (TEM) and atom probe tomography to four mineral grains (olivine, ilmenite, and two ...
Jennika Greer, Alexander M. Kling, Luke Daly, Dieter Isheim, David N. Seidman, Michelle S. Thompson, Philipp R. Heck   +6 more
wiley   +1 more source

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, EarlyView.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Warped Disk Galaxies. II. From the Cosmic Web to the Galactic Warp

The Astrophysical Journal
Galactic warps are common in disk galaxies. While often attributed to galaxy–galaxy tides, a nonspherical dark matter halo has also been proposed as a driver of disk warping.
Woong-Bae G. Zee, S. Lyla Jung, Sanjaya Paudel, Suk-Jin Yoon   +3 more
doaj   +1 more source

Caught in the web: Galaxy mergers along cosmic filaments

Astronomy & Astrophysics
Context. Galaxy clusters grow through the accretion of galaxies from groups, filaments, and other clusters. During this process, galaxies may undergo pre-processing in lower density environments, where galaxy–galaxy mergers and other interactions can ...
Dulcien Carolina, Jaffé Yara L., Crossett Jacob P., Baier-Soto Raúl, Méndez-Hernández Hugo, Haines Christopher P., Cabrera-Vives Guillermo, Olivares Patricio, Vásquez-Bustos Paulo, Argudo-Fernández Maria, Vivanco Javiera, Bilton Lawrence, Bom Clécio R., D’Ago Giuseppe, Finoguenov Alexis, Kuchner Ulrike, Lima-Dias Ciria, Merluzzi Paola, Monachesi Antonela, Pallero Diego, Tejos Nicolas, Teixeira Gabriel S. M., Sifón Cristóbal, Carvalho Maiara S., Demarco Ricardo, Ibar Eduardo, Montaguth Gissel P., Piraino-Cerda Franco, Rescigno Umberto, Sampaio Vitor, Oliveira Schwarz Gustavo B., Smith Rory, Vulcani Benedetta, Malavasi Nicola   +33 more
doaj   +1 more source