Results 81 to 90 of about 198 (153)

Dissecting Bar-induced Stellar Kinematics in Disk Galaxies: The Bisymmetric Model and Rotation Curve Modifications

The Astrophysical Journal
We analyze bars formed in N -body simulations to investigate two key aspects of stellar kinematic structure of barred galaxies: the angular distributions of the radial and azimuthal components of stellar velocities, and the impact of bars on rotation ...
Seungwon Baek, Woong-Tae Kim, Dajeong Jang, Taehyun Kim   +3 more
doaj   +1 more source

Simulations of cosmic ray propagation. [PDF]

Living Rev Comput Astrophys, 2021
Hanasz M, Strong AW, Girichidis P.
europepmc   +1 more source

Discovery of a Barred-spiral Galaxy at zspec = 3.16. II. The Star Formation History

The Astrophysical Journal
We present a detailed analysis of a massive barred galaxy at z _spec  = 3.1591 using deep multiband imaging from the Hubble Space Telescope (HST) and JWST.
Yingjie Cheng, Mauro Giavalisco, Daniel Ivanov, Luca Costantin, Elena D’Onghia, Yuchen Guo, Shardha Jogee, John R. Weaver, Katherine E. Whitaker   +8 more
doaj   +1 more source

Duration and properties of the embedded phase of star formation in 37 nearby galaxies from PHANGS-JWST

Astronomy & Astrophysics
Light reprocessed by dust grains emitting in the infrared enables the study of the physics at play in dusty embedded regions, where ultraviolet and optical wavelengths are attenuated.
Ramambason Lise, Chevance Mélanie, Kim Jaeyeon, Belfiore Francesco, Diederik Kruijssen J. M., Romanelli Andrea, Amiri Amirnezam, Boquien Médéric, Chown Ryan, Dale Daniel A., Dlamini Simthembile, Egorov Oleg V., Gerasimov Ivan, Glover Simon C. O., Grasha Kathryn, Hassani Hamid, Kim Hwihyun, Kreckel Kathryn, Koziol Hannah, Leroy Adam K., Méndez-Delgado José Eduardo, Neumann Justus, Neumann Lukas, Pan Hsi-An, Pathak Debosmita, Sandstrom Karin, Sarbadhicary Sumit K., Schinnerer Eva, Sun Jiayi, Sutter Jessica, Thilker David A., Ubeda Leonardo, Weinbeck Tony D., Whitmore Bradley C., Williams Thomas G.   +34 more
doaj   +1 more source

Galactic Bars Are Already Mature at Cosmic Noon: Bar Strength and Flatness at z ∼ 1.5

The Astrophysical Journal
In this work, we explore the nature of z  > 1 galactic bars. Once thought to be highly transient, our results demonstrate otherwise. Our sample consists of nine massive (>10 ^10.5 M _⊙ ) star-forming barred-spiral galaxies at z _spec  ∼ 1.5.
Boris S. Kalita, Luis C. Ho, John D. Silverman, Frédéric Bournaud, Miroslava Dessauges-Zavadsky, Emanuele Daddi, Annagrazia Puglisi, Xuheng Ding, Si-Yue Yu   +8 more
doaj   +1 more source

Physical Properties of Gas Departing from Circular Rotation at 50 pc Scales Using the PHANGS-MUSE Galaxies

The Astronomical Journal
Noncircular (NC) motions have been observed across various spatial scales in disk galaxies, yet the physical properties of the gas involved in these motions remain poorly constrained.
Carlos López-Cobá, Lihwai Lin, Irene Cruz Gonzalez, Sebastián F. Sánchez, Hsi-An Pan, J. K. Barrera-Ballesteros, Bau-Ching Hsieh   +6 more
doaj   +1 more source

Multiscale Gas Structure and Dynamics in an Extragalactic Central Molecular Zone

The Astrophysical Journal
The structures and dynamics of the interstellar medium are governed by a combination of self-gravity, external gravity, and various sources of ordered and random motions on different spatial scales.
Liam M. Wang, Jiayi Sun, Yu-Hsuan Teng, Eric W. Koch, Sanghyuk Moon, Elias Oakes, Erik Rosolowsky   +6 more
doaj   +1 more source

Discovery of diffuse optical emission lines from the inner Galaxy: Evidence for LI(N)ER-like gas. [PDF]

Sci Adv, 2020
Krishnarao D, Benjamin RA, Haffner LM.
europepmc   +1 more source

ALMA-LEGUS. II. The Influence of Subgalactic Environments on Molecular Cloud Properties

The Astrophysical Journal
We compare the molecular cloud properties in subgalactic regions of two galaxies, barred spiral NGC 1313, which is forming many massive clusters, and flocculent spiral NGC 7793, which is forming significantly fewer massive clusters despite having a ...
Molly K. Finn, Kelsey E. Johnson, Remy Indebetouw, Allison H. Costa, Angela Adamo, Alessandra Aloisi, Lauren Bittle, Daniela Calzetti, Daniel A. Dale, Clare L. Dobbs, Jennifer Donovan Meyer, Bruce G. Elmegreen, Debra M. Elmegreen, Michele Fumagalli, J. S. Gallagher, Kathryn Grasha, Eva K. Grebel, Robert C. Kennicutt, Mark R. Krumholz, Janice C. Lee, Matteo Messa, Preethi Nair, Elena Sabbi, Linda J. Smith, David A. Thilker, Bradley C. Whitmore, Aida Wofford   +26 more
doaj   +1 more source

Automated Detection of Galactic Rings from Sloan Digital Sky Survey Images

The Astrophysical Journal
Morphological features in galaxies—like spiral arms, bars, rings, and tidal tails, etc.—carry information about their structure, origin, and evolution.
Linn Abraham, Sheelu Abraham, Ajit K. Kembhavi, N. S. Philip, A. K. Aniyan, Sudhanshu Barway, Harish Kumar   +6 more
doaj   +1 more source