Results 121 to 130 of about 46,922 (223)

On the Structural Differences between Disk and Dwarf Galaxies

, 2005
Gas-rich dwarf and disk galaxies overlap in numerous physical quantities that make their classification subjective. We report the discovery of a separation between dwarfs and disks into two unique sequences in the mass (luminosity) versus scale length ...
Binggeli B., Brosch N., Carignan C., de Blok W. J. G., Fall S. M., James M. Schombert, Kauffmann G., Lambas D. G., Papaderos P., Sleath J. P.   +9 more
core   +1 more source

Satellite Kinematics III: Halo Masses of Central Galaxies in SDSS

, 2010
We use the kinematics of satellite galaxies that orbit around the central galaxy in a dark matter halo to infer the scaling relations between halo mass and central galaxy properties.
Adelman-McCarthy, Baldry, Becker, Behroozi, Bell, Blanton, Blanton, Blanton, Borch, Brainerd, Brown, Cacciato, Carlberg, Carlberg, Collister, Conroy, Conroy, Conroy, Conroy, Cooray, Croton, Dai, Dutton, Erickson, Gavazzi, Guo, Hu, Kravtsov, Kroupa, Li, Macciò, Mandelbaum, Mandelbaum, McKay, More, More, Moster, Navarro, Norberg, Parker, Prada, Rubin, Rykoff, Seljak, Shankar, Skibba, Skibba, Skibba, Tinker, Tinker, van den, van den, van den, van den, Yang, Yang, Yang, Yang, Yang, Yoo, York, Zaritsky, Zaritsky, Zaritsky, Zehavi, Zehavi, Zheng   +66 more
core   +1 more source

Gas Dynamics in the Barred Seyfert Galaxy NGC4151 - II. High Resolution HI Study

, 1998
We present sensitive, high angular resolution (6" x 5") 21-cm observations of the neutral hydrogen in the nearby barred Seyfert galaxy, NGC4151. These HI observations, obtained using the VLA in B-configuration, are the highest resolution to date of this ...
A. Pedlar, A. Robinson, C. G. Mundell, D. L. Shone, SIMKIN   +4 more
core   +1 more source

WALLABY Pilot Survey: Characterizing Low-rotation Kinematically Modeled Galaxies

The Astrophysical Journal
Many of the tensions in cosmological models of the Universe lie in the low-mass, low-velocity regime. Probing this regime requires a statistically significant sample of galaxies with well-measured kinematics and robustly measured uncertainties.
N. Deg, K. Spekkens, N. Arora, R. Dudley, H. White, A. Helias, J. English, T. O’Beirne, V. Kilborn, G. Ferrand, M. L. A. Richardson, B. Catinella, L. Cortese, H. Dénes, A. Elagali, B.-Q. For, K. Lee-Waddell, J. Rhee, L. Shao, A. X. Shen, L. Staveley-Smith, T. Westmeier, O. I. Wong   +22 more
doaj   +1 more source

Mg II absorbing galaxies: morphologies and kinematics

, 2004
In this contribution, we review our current knowledge of the properties of galaxies, and their extended halos, selected by MgII absorption in the spectra of background quasars. We then describe recent efforts to quantify the morphologies and orientations of galaxies and explore how these relate to the gas kinematics. In a sample of 26 galaxies, we find
Churchill, Chris, Steidel, Chuck, Kacprzak, Glenn   +2 more
openaire   +2 more sources

Handy Relation between Binary Black Hole Merger Times and Host Galaxy Properties

The Astrophysical Journal Letters
Over the past 15 yr, the evidence has clearly demonstrated that massive black hole (MBH) binary merger timescales depend strongly on the structural and kinematic properties of their host galaxy.
Kelly Holley-Bockelmann, Fazeel Mahmood Khan, Isaiah Williams, Jaelyn Roth, Michael Rizzo Smith, Kaitlin Porter, Jillian Bellovary, Andrea Derdzinski, Andrea V. Macciò   +8 more
doaj   +1 more source

Role of Gaseous Disk in the Formation of the Spiral Structure of the Milky Way Galaxy

Open Astronomy, 2016
We use observational gaseous and stellar density distributions in the disk of the Milky Way (MW) galaxy together with the disk rotation curve and measured disk velocity dispersion to build collisionless and combined collisionless-gaseous equilibrium ...
Korchagin V. I., Khoperskov S. A., Khoperskov A. V.   +2 more
doaj   +1 more source

Stellar kinematics of barred galaxies

, 1999
I show that the counter-rotating core of the barred galaxy NGC 5728 could be explained by the internal dynamics of the bar. This supports the idea that the nuclear bar is counter-rotating.
openaire   +2 more sources

The Sunburst Arc with JWST. IV. The Importance of Interaction, Turbulence, and Feedback for Lyman-continuum Escape

The Astrophysical Journal
At present, the best opportunity for detailed Lyman continuum (LyC) escape studies is in gravitationally lensed galaxies at z  ≳ 2. Only one such galaxy currently exists in the literature with sufficient magnification and spatial resolution: the Sunburst
T. Emil Rivera-Thorsen, Brian Welch, Taylor Hutchison, Matthew J. Hayes, Jane R. Rigby, Keunho Kim, Suhyeon Choe, Michael Florian, Matthew B. Bayliss, Gourav Khullar, Keren Sharon, Håkon Dahle, John Chisholm, Erik Solhaug, M. Riley Owens, Michael D. Gladders   +15 more
doaj   +1 more source

The Intrinsic Flattening of Galaxy Disks

The Astrophysical Journal
Highly inclined (edge-on) disk galaxies offer the unique perspective to constrain their intrinsic flattening, c / a , where c and a are, respectively, the vertical and long radial axes of the disk measured at suitable stellar densities.
Jeremy Favaro, Stéphane Courteau, Sébastien Comerón, Connor Stone   +3 more
doaj   +1 more source