Results 81 to 90 of about 281 (182)
The Black Hole Mass and Photometric Components of NGC 4826
The Astrophysical JournalWe present infrared photometry and Hubble Space Telescope imaging and spectroscopy of the Sab galaxy NGC 4826. Schwarzschild dynamical modeling is used to measure its central black hole mass M . Photometric decomposition is used to enable a comparison of
Kayhan Gültekin +8 more
doaj +1 more source
The nuclei of bulge-less galaxies [PDF]
, 2004 Als Beitrag zur Vervollst?andigung unseres Wissens ?uber Galaxienzentren wurde die Zentral-Region sehr sp?ater (bulge-loser) Spiralgalaxien untersucht.
openaire +1 more source
Galaxy Zoo: The Environmental Dependence of Bars and Bulges in Disc Galaxies
, 2011 We present an analysis of the environmental dependence of bars and bulges in disc galaxies, using a volume-limited catalogue of 15810 galaxies at z<0.06 from the Sloan Digital Sky Survey with visual morphologies from the Galaxy Zoo 2 project. We find that the likelihood of having a bar, or bulge, in disc galaxies increases when the galaxies have ...
Skibba, Ramin A. +10 more
openaire +5 more sources
Ionized Gas Kinematics with FRESCO: An Extended, Massive, Rapidly Rotating Galaxy at z = 5.4
The Astrophysical Journal LettersWith the remarkable sensitivity and resolution of JWST in the infrared, measuring rest-optical kinematics of galaxies at z > 5 has become possible for the first time.
Erica Nelson +45 more
doaj +1 more source
Tracing the dynamical and structural complexity of spiral galaxy centres
Astronomy & AstrophysicsContext. The formation and evolution of late-type galaxies have traditionally been described in terms of two pathways, one producing pressure-supported classical bulges and the other producing rotationally supported pseudo-bulges.
Breda Iris +9 more
doaj +1 more source
Extinction Effects on Galaxy Counts for Bulge‐Disk Galaxies
The Astrophysical Journal, 1997 We examine extinction effects of interstellar dust on galaxy counts for bulge-disk galaxies. Evolution of dust mass is calculated simultaneously with galaxy chemical evolution equations under the context of the so-called infall model, and three-dimensional radiative transfer calculation is performed with scattering effects. Prevailing importance of the
V. Vansevičius, N. Arimoto, K. Kodaria
openaire +1 more source
Disclosing Submillimeter Galaxy Formation: Mergers or Secular Evolution?
The Astrophysical JournalWe analyze the morphology of 125 submillimeter galaxies (SMGs) in the PRIMER-COSMOS field using double Sérsic modeling on JWST NIRCam images across six bands (F150W, F200W, F277W, F356W, F410M, and F444W), with SMGs being classified by the bulge Sérsic ...
Siu-Wang Chan, Yiping Ao, Qing-hua Tan
doaj +1 more source
Decoding Galactic Merger Histories
Galaxies, 2017 Galaxy mergers are expected to influence galaxy properties, yet measurements of individual merger histories are lacking. Models predict that merger histories can be measured using stellar halos and that these halos can be quantified using observations of
Eric F. Bell +7 more
doaj +1 more source
The Astrophysical JournalLow-frequency gravitational-wave experiments such as the Laser Interferometer Space Antenna and pulsar timing arrays are expected to detect individual massive black hole (MBH) binaries and mergers.
Jaeden Bardati +3 more
doaj +1 more source
Spheroid and disk signatures in galaxy bulges* [PDF]
EAS Publications Series, 2003 Review at JENAM2002 Galaxy Dynamics Workshop (Porto, Portugal, 2002 September 3-7).
openaire +2 more sources