Results 81 to 90 of about 688,273 (301)

Galaxy Zoo: Bars in Disk Galaxies

, 2010
We present first results from Galaxy Zoo 2, the second phase of the highly successful Galaxy Zoo project (www.galaxyzoo.org).
Masters, Karen L., Nichol, Robert C., Hoyle, Ben, Lintott, Chris, Bamford, Steven P., Edmondson, Edward M., Forston, Lucy, Keel, William C., Schawinski, Kevin, Smith, Arfon M., Thomas, Daniel   +10 more
openaire   +5 more sources

Compact Quiescent Galaxies at Intermediate Redshifts

, 2014
From several searches of the area common to the Sloan Digital Sky Survey and the United Kingdom Infrared Telescope Infrared Deep Sky Survey, we have selected 22 luminous galaxies between $z \sim$ 0.4 and $z \sim$ 0.9 that have colors and sizes similar to
Hsu, Li-Yen, Shih, Hsin-Yi, Stockton, Alan   +2 more
core   +1 more source

The host galaxies and classification of active galactic nuclei [PDF]

, 2006
We present an analysis of the host properties of 85224 emission-line galaxies selected from the Sloan Digital Sky Survey. We show that Seyferts and LINERs form clearly separated branches on the standard optical diagnostic diagrams.
L. Kewley, B. Groves, G. Kauffmann, Tim Heckman U. Hawaii, M. F. Astrophysik, J. University   +5 more
semanticscholar   +1 more source

Modeling the Radial Color Profile of M31

Open Astronomy, 2003
We present a preliminary study of a fragment of the radial color profile of the spiral galaxy M 31 in terms of 2-D model accounting for internal extinction in the disk. The two stellar population disk model was assumed.
Semionov D., Stonkutė R., Vansevičius V.   +2 more
doaj   +1 more source

Predictions and Outcomes for the Dynamics of Rotating Galaxies

Galaxies, 2020
A review is given of a priori predictions made for the dynamics of rotating galaxies. One theory—MOND—has had many predictions corroborated by subsequent observations.
Stacy McGaugh
doaj   +1 more source

High Redshift Massive Quiescent Galaxies are as Flat as Star Forming Galaxies: The Flattening of Galaxies and the Correlation with Structural Properties in CANDELS/3D-HST [PDF]

, 2019
We investigate the median flattening of galaxies at $0 ...
Franx, Marijn, Hill, Allison R., Momcheva, Iva, Muzzin, Adam, Skelton, Rosalind E., van der Wel, Arjen, van Dokkum, Pieter, Whitaker, Katherine E.   +7 more
core   +3 more sources

The evolution of the mass-size relation to z=3.5 for UV-bright galaxies and sub-mm galaxies in the GOODS-NORTH field

, 2010
We study the evolution of the size - stellar mass relation for a large spectroscopic sample of galaxies in the GOODs North field up to $z \sim 3.5$. The sizes of the galaxies are measured from $\textit{K}_{s}$-band images (corresponding to rest-frame ...
Franx, Marijn, Kriek, Mariska, Mosleh, Moein, Williams, Rik J.   +3 more
core   +1 more source

SPARC: MASS MODELS FOR 175 DISK GALAXIES WITH SPITZER PHOTOMETRY AND ACCURATE ROTATION CURVES [PDF]

, 2016
We introduce SPARC (Spitzer Photometry and Accurate Rotation Curves): a sample of 175 nearby galaxies with new surface photometry at 3.6 μm and high-quality rotation curves from previous H i/Hα studies.
F. Lelli, S. McGaugh, J. Schombert
semanticscholar   +1 more source

Surface Brightness Plateau in S4G Galaxies

Galaxies, 2020
Using 3.6-μm data from 2112 galaxies, we show that, contrary to widely held expectations of a continuous steep decline, radial surface brightness profiles of galaxies tend to flatten and form extended plateaus beyond 27–28 magAB/arcsec2.
Alan Sipols, Alex Pavlovich
doaj   +1 more source

Equipartition Jet Model for the Seyfert 1 Galaxy 3C120 [PDF]

Journal of Astronomy and Space Sciences, 2003
The motion of 3C120 Jet relative to the core is reasonably uniform and the VLBI scale jet connects outwards to a VLA ˜ 100 kpc scale. We measured the jet width variation from the center and found some indication of a power law which indicates the jet ...
Siek Hyung
doaj   +1 more source