Results 121 to 130 of about 154,367 (172)

The Impact of Bar-induced Noncircular Motions on the Measurement of Galactic Rotation Curves

The Astrophysical Journal
We study the impact of bar-induced noncircular motions on the derivation of galactic rotation curves (RCs) using hydrodynamic simulations and observational data from the PHANGS-ALMA survey.
Jie Liu, Zhi Li, Juntai Shen
doaj   +1 more source

GBT/Argus Observations of Molecular Gas in the Inner Regions of IC 342

The Astrophysical Journal
We report observations of the ground state transitions of ^12 CO, ^13 CO, C ^18 O, HCN, and HCO ^+ at 88–115 GHz in the inner region of the nearby galaxy IC 342.
Jialu Li, Andrew I. Harris, Erik Rosolowsky, Amanda A. Kepley, David Frayer, Alberto D. Bolatto, Adam K. Leroy, Jennifer Donovan Meyer, Sarah Church, Joshua Ott Gundersen, Kieran Cleary, DEGAS TEAM MEMBERS   +11 more
doaj   +1 more source

Abundance gradients in a sample of barred spiral galaxies [PDF]

, 2005
O. L. Dors, M. V. F. Copetti
openalex   +1 more source

The Potential-Density Phase-Shift Method for Determining the Corotation Radii in Spiral and Barred Galaxies [PDF]

, 2007
Xiaolei Zhang, R. Buta
openalex   +1 more source

Comparison of Bar Formation Mechanisms. I. Does a Tidally Induced Bar Rotate Slower than an Internally Induced Bar?

The Astrophysical Journal
Galactic bars can form via the internal bar instability or external tidal perturbations by other galaxies. We systematically compare the properties of the bars formed through the two mechanisms with a series of controlled N -body simulations that form ...
Yirui Zheng, Juntai Shen
doaj   +1 more source

Galactic Structure Dependence of Cloud–Cloud-collision-driven Star Formation in the Barred Galaxy NGC 3627

The Astrophysical Journal
While cloud–cloud collisions (CCCs) have been proposed as a mechanism for triggering massive star formation, it is suggested that higher collision velocities ( v _col ) and lower giant molecular cloud (GMC) mass ( M _GMC ) and/or density (Σ _GMC ) tend ...
Fumiya Maeda, Kouji Ohta, Fumi Egusa, Yusuke Fujimoto, Masato I. N. Kobayashi, Shin Inoue, Asao Habe   +6 more
doaj   +1 more source

Rings and spirals in barred galaxies - I. Building blocks [PDF]

, 2009
E. Athanassoula, M. Romero-Gómez, Josep J. Masdemont   +2 more
openalex   +1 more source

Effects of Halo Spin on the Formation and Evolution of Bars in Disk Galaxies

The Astrophysical Journal
The spin of dark halos has been shown to significantly affect bar formation and evolution in disk galaxies. To understand the physical role of halo spin in bar formation, we run N -body simulations of isolated, Milky Way–sized galaxies by varying the ...
Dajeong Jang, Woong-Tae Kim
doaj   +1 more source

Age distributions of star clusters in spiral and barred galaxies as a test for theories of spiral structure [PDF]

, 2010
Clare L. Dobbs, J. E. Pringle
openalex   +1 more source

THE CENTRAL REGION OF THE BARRED SPIRAL GALAXY NGC 1097 PROBED BY AKARI NEAR-INFRARED SPECTROSCOPY [PDF]

, 2012
T. Kondo, Hidehiro Kaneda, Shinki Oyabu, Daisuke Ishihara, Tatsuya Mori, Mitsuyoshi Yamagishi, Takashi Onaka, Itsuki Sakon, T. Suzuki   +8 more
openalex   +1 more source