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We present distance estimates for eleven peculiar Virgo cluster spiral galaxies based on measurements of the stellar kinematics of their central 2 kpc. Stellar circular velocities were obtained using two-integral dynamical models. Distances…

Astrophysics · Physics 2009-11-13 Juan R. Cortes , Jeffrey D. P. Kenney , Eduardo Hardy

We obtain spatially resolved kinematics with the Keck Cosmic Web Imager (KCWI) integral-field spectrograph for a sample of 14 massive (11 < log$_{10}$ M$_*$/M$_{\odot}$ < 12) lensing early-type galaxies at z~0.15-0.35 from the Sloan Lens…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-30 Shawn Knabel , Tommaso Treu , Michele Cappellari , Anowar J. Shajib , Chih-Fan Chen , Simon Birrer , Vardha N. Bennert

We report the first results from a study of the internal kinematics, based on spatially resolved H_alpha velocity profiles, of three galaxies at redshift z~0.6 and one at redshift z~0.8, detected by ISOCAM in the Hubble Deep Field South.…

Astrophysics · Physics 2009-11-07 D. Rigopoulou , A. Franceschini , H. Aussel , R. Genzel , N. Thatte , C. J. Cesarsky

Using neutral hydrogen (HI) rotation curves of 79 galaxies, culled from the literature, as well as measured from HI data, we present a method for classifying disk galaxies by their kinematics. In order to investigate fundamental kinematic…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-15 Theresa Wiegert , Jayanne English

This is the second part of an H-alpha kinematics follow-up survey of the Spitzer Infrared Nearby Galaxies Survey (SINGS) sample. The aim of this program is to shed new light on the role of baryons and their kinematics and on the…

A survey of 329 nearby galaxies (redshift z < 0.045) has been conducted to study the distribution of mass and light within spiral galaxies over a range of environments. The 18 observed clusters and groups span a range of richness, density,…

Astrophysics · Physics 2009-11-10 Nicole P. Vogt , Martha P. Haynes , Terry Herter , Riccardo Giovanelli

Galaxy dynamics probes weak gravity at accelerations below the de Sitter scale of acceleration $a_{dS}=cH$, where $c$ is the velocity of light and $H$ is the Hubble parameter. Low and high redshift galaxies hereby offer a novel probe of…

Astrophysics of Galaxies · Physics 2017-10-18 Maurice H. P. M. van Putten

We present a survey of the photometric and kinematic properties of 39 nearby, nearly face-on disk galaxies. Our approach exploits echelle-resolution integral-field spectroscopy of the H-alpha regions, obtained with DensePak on the WIYN 3.5m…

We derive the value of H_0 using the inverse diameter and magnitude B-band Tully-Fisher relations and the large all-sky sample KLUN (5171 spiral galaxies). Our kinematical model was that of Peebles centered at Virgo. Our calibrator sample…

Astrophysics · Physics 2011-05-23 T. Ekholm , P. Teerikorpi , G. Theureau , M. Hanski , G. Paturel , L. Bottinelli , L. Gouguenheim

Most Milky Way globular clusters (GCs) exhibit measurable flattening, even if on a very low level. Both cluster rotation and tidal fields are thought to cause this flattening. Nevertheless, rotation has only been confirmed in a handful of…

We study the possible rotation of cluster galaxies, developing, testing and applying a novel algorithm which identifies rotation, if such does exist, as well as its rotational centre, its axis orientation, rotational velocity amplitude and,…

Cosmology and Nongalactic Astrophysics · Physics 2016-12-16 M. Manolopoulou , M. Plionis

Dwarf Irregular galaxies (dIrrs) are the smallest stellar systems with extended HI discs. The study of the kinematics of such discs is a powerful tool to estimate the total matter distribution at these very small scales. In this work, we…

Astrophysics of Galaxies · Physics 2017-03-22 Giuliano Iorio , Filippo Fraternali , Carlo Nipoti , Enrico Di Teodoro , Justin I. Read , Giuseppina Battaglia

Advances in instrumentation have recently extended detailed measurements of gas kinematics to large samples of high-redshift galaxies. Relative to most nearby, thin disk galaxies, in which gas rotation accurately traces the gravitational…

We present the results of a spectroscopic survey of the kinematic structure of star-forming galaxies at redshift z ~ 2 - 3 using Keck/OSIRIS integral field spectroscopy. Our sample is comprised of 12 galaxies between redshifts z ~ 2.0 and…

Astrophysics of Galaxies · Physics 2014-11-18 David R. Law , Charles C. Steidel , Dawn K. Erb , James E. Larkin , Max Pettini , Alice E. Shapley , Shelley A. Wright

The kinematic morphology-density relation of galaxies is normally attributed to a changing distribution of galaxy stellar masses with the local environment. However, earlier studies were largely focused on slow rotators; the dynamical…

The statistical properties of the ellipticities of galaxy images depend on how galaxies form and evolve, and therefore constrain models of galaxy morphology, which are key to the removal of the intrinsic alignment contamination of…

Cosmology and Nongalactic Astrophysics · Physics 2013-05-28 B. Joachimi , E. Semboloni , P. E. Bett , J. Hartlap , S. Hilbert , H. Hoekstra , P. Schneider , T. Schrabback

We present a unified corpus of 8,963 spatially resolved HI rotation curve measurements across 423 galaxies (438 total catalog entries including 15 metadata-only THINGS galaxies), drawn from four major surveys: SPARC (175), THINGS (34),…

Astrophysics of Galaxies · Physics 2026-04-16 David C. Flynn

This series of papers is dedicated to a new technique to select galaxies that can act as standard rods and standard candles in order to perform geometrical tests on large samples of high redshift galaxies to constrain different cosmological…

Astrophysics · Physics 2009-11-13 A. Saintonge , K. L. Masters , C. Marinoni , K. Spekkens , R. Giovanelli , M. P. Haynes

The distributions of stars, gas, and dark matter in disk galaxies provide important constraints on galaxy formation models, particularly on small spatial scales (<1kpc). We have designed the RSS Imaging spectroscopy Nearby Galaxy Survey…

Astrophysics of Galaxies · Physics 2018-03-14 Carl J. Mitchell , J. A. Sellwood , T. B. Williams , Kristine Spekkens , Rachel Kuzio de Naray , Alex Bixel

Obtaining reliable distance estimates to gas clouds within the Milky Way is challenging in the absence of certain tracers. The kinematic distance approach has been used as an alternative, derived from the assumption of circular trajectories…