Results 81 to 90 of about 356,387 (135)

The Small Scale Environment of Low Surface Brightness Disk Galaxies [PDF]

, 1993
We use a sample of ≈340 low surface brightness (LSB) disk galaxies with measured redshifts in combination with the Center for Astrophysics redshift survey to test the hypothesis that LSB galaxies have a deficit of nearby companion galaxies compared to ...
McGaugh, Stacy S.
core   +1 more source

The molecular and atomic hydrogen gas content of the Boötes Void galaxy CG 910

Astronomy & Astrophysics
Context. Void galaxies are located in the most under-dense environments of the Universe, where the number density of galaxies is extremely low. They are, hence, good targets for studying the secular evolution of galaxies and the slow buildup of stellar ...
Sharma Ekta, Biswas Prerana, Das Mousumi, Winkel Benjamin, Li Di, Zheng Zheng   +5 more
doaj   +1 more source

Conditions for Bar Formation in Bulgeless Disk Galaxies

The Astrophysical Journal
While bars are commonly observed in disk galaxies, the precise conditions governing their formation remain incompletely understood. To investigate these conditions, we perform a suite of N -body simulations of bulgeless disk galaxies with stellar masses ...
Dajeong Jang, Woong-Tae Kim, Yun Hee Lee
doaj   +1 more source

Minor-axis velocity gradients in disk galaxies [PDF]

, 2004
We present the ionized-gas kinematics and photometry of a sample of 4 spiral galaxies which are characterized by a zero-velocity plateau along the major axis and a velocity gradient along the minor axis, respectively.
COCCATO, LODOVICO, PIZZELLA, ALESSANDRO, BERTOLA, FRANCESCO, L. Morelli, CORSINI, ENRICO MARIA, A. Pizzella, MORELLI, LORENZO, E. M. Corsini, FUNES J. G., L. Coccato, J. G. Funes S. J., F. Bertola   +11 more
core   +1 more source

A fundamental plane of spiral structure in disk galaxies [PDF]

, 2015
Spiral structure is the most distinctive feature of disk galaxies and yet debate persists about which theory of spiral structure is correct. Many versions of the density wave theory demand that the pitch angle be uniquely determined by the distribution ...
Flatman, Russell, Daniel Kennefick, Davis, Benjamin L., Hartley, Matthew T., Thomas P. K. Martinsson, Julia Kennefick, Kennefick, Julia, Shields, Douglas W., Berrier, Joel C., Westfall, Kyle B., Martinsson, Thomas P. K., Kyle B. Westfall, Douglas W. Shields, Kennefick, Daniel, Benjamin L. Davis, Swaters, Rob A., Russell Flatman, Joel C. Berrier, Rob A. Swaters, Matthew T. Hartley   +19 more
core   +1 more source

Identifying Signatures of Inflow onto Face-on Galaxies Using the Balmer Decrement

The Astrophysical Journal
Isolated star-forming galaxies require inflows of fresh gas from the surrounding medium to sustain episodes of star formation over time. However, there are very few direct detections of accretion onto external galaxies.
Meghna Sitaram, Hui Li, Yong Zheng, Greg L. Bryan, Mary Putman, Aaron Smith, Rahul Kannan   +6 more
doaj   +1 more source

Galaxias Enanas del Grupo Local

Momento, 2009
The satellite galaxies of the Milky Way are very important both for the studies of the formation and evolution of galaxies and for the research on the dark matter problem. In the present review paper some structural properties of the Local Group, as well
A Casallas Lagos, D J Cubillos, R A Casas Miranda   +2 more
doaj  

The star formation history of early-type galaxies in the fornax cluster [PDF]

, 1998
We have measured central line strengths and line-strength gradients for a complete sample of early-type galaxies in the Fornax cluster, comprising 11 elliptical and 11 lenticular galaxies, more luminous than M(_B) = -17.
Kuntschner, Harald, Kuntschner, H.
core  

Molecular Disk Properties in Early Type Galaxies [PDF]

, 2011
We study the simulated CO emission from elliptical galaxies formed in the mergers of gas-rich disk galaxies. The cold gas not consumed in the merger-driven starburst quickly resettles into a disk-like configuration.
Xu, X., Narayanan, Desika
core   +1 more source

SDSS-IV MaNGA: Distinct Structural Growth and Star Formation in Low and High Surface Brightness Disks

The Astrophysical Journal Supplement Series
We analyze a clean sample of 1118 late-type, face-on galaxies without active galactic nucleus contamination from the MaNGA survey. Their photometric structures are quantified via two-component (bulge + disk) decompositions of deep g -band images from the
Mengting Shen, Jun Yin, Hassen M. Yesuf, Lei Hao, Jiafeng Lu, Lin Lin, Chong Ge, Junfeng Wang, Shiyin Shen, Yu Rong   +9 more
doaj   +1 more source