English
Related papers

Related papers: The Evolution of Spiral Disks

200 papers

We investigate the evolution of the Tully-Fisher relation out to z=1 with 137 emission-line galaxies in the field that display a regular rotation curve. They follow a linear trend with lookback time being on average brighter by 1.1Bmag and…

Astrophysics of Galaxies · Physics 2015-06-23 Bodo Ziegler , Asmus Boehm

We investigate the Tully-Fisher Relation (TFR) for a morphologically and kine- matically diverse sample of galaxies from the SAMI Galaxy Survey using 2 dimensional spatially resolved Halpha velocity maps and find a well defined relation…

We report on observations of circumstellar disks around young stars that have been obtained with the MIDI instrument, which is mounted on the VLT Interferometer and operates in the 10 micrometer atmospheric window. The maximum spatial…

During the past decade circumbinary disks have been discovered around various young binary stars. Hydrodynamical calculations indicate that the gravitational interaction between the central binary star and the surrounding disk results in…

Earth and Planetary Astrophysics · Physics 2015-07-15 Jan Philipp Ruge , Sebastian Wolf , Tatiana Demidova , Vladimir Grinin

We present 21 cm observations of a 5 x degree region in the Virgo cluster, obtained as part of the Arecibo Galaxy Environment Survey. 13 cluster members are detected, together with 36 objects in the background. We compare and contrast the…

Astrophysics of Galaxies · Physics 2015-06-11 R. Taylor , J. I. Davies , R. Auld , R. F. Minchin , R. Smith

We determine the intrinsic axial ratio distribution of the 'gas' disks of extremely faint M_B > -14.5 dwarf irregular galaxies. We start with the measured (beam corrected) distribution of apparent axial ratios in the HI 21cm images of dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2014-09-04 Sambit Roychowdhury , Jayaram N. Chengalur , Ayesha Begum , Igor D. Karachentsev

Within the hierarchical framework for galaxy formation, merging and tidal interactions are expected to shape large galaxies to this day. While major mergers are quite rare at present, minor mergers and satellite disruptions - which result…

We studied, for the first time, the near infrared, stellar and baryonic Tully-Fisher relations for a sample of field galaxies taken from an homogeneous Fabry-Perot sample of galaxies (the GHASP survey). The main advantage of GHASP over…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-28 S. Torres-Flores , B. Epinat , P. Amram , H. Plana , C. Mendes de Oliveira

The study of the evolution of the Tully-Fisher relation has been controversial in the past years. The main difficulty is in determining the required parameters for intermediate and high redshift galaxies. This work aims to identify the main…

Cosmology and Nongalactic Astrophysics · Physics 2009-11-13 M. Fernández Lorenzo , J. Cepa , A. Bongiovanni , H. Castañeda , A. M. Pérez García , M. A. Lara-López , M. Pović , M. Sánchez-Portal

We present the SFI++ dataset, a homogeneously derived catalog of photometric and rotational properties and the Tully-Fisher distances and peculiar velocities derived from them. We make use of digital optical images, optical long-slit…

The SFI++ consists of ~5000 spiral galaxies which have measurements suitable for the application of the I-band Tully-Fisher (TF) relation. This sample builds on the SCI and SFI samples published in the 1990s but includes significant amounts…

We have performed TreeSPH simulations of galaxy formation in a standard LCDM cosmology, including effects of star formation, energetic stellar feedback processes and a meta-galactic UV field, and obtain a mix of disk, lenticular and…

Astrophysics · Physics 2009-11-07 Jesper Sommer-Larsen , Martin Gotz , Laura Portinari

We have obtained new Tully-Fisher (TF) peculiar velocity measurements for 52 Abell galaxy clusters distributed throughout the sky between ~ 50 and 200 Mpc/h.The measurements are based on I band photometry and optical rotation curves for a…

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.…

Astrophysics of Galaxies · Physics 2025-01-09 Jeremy Favaro , Stéphane Courteau , Sébastien Comerón , Connor Stone

Transition disks are considered sites of ongoing planet formation, and their dust and gas distributions could be signposts of embedded planets. The transition disk around the T Tauri star RY Lup has an inner dust cavity and displays a…

We discuss the integrated kinematic parameters of 20 M51-type binary galaxies. A comparison of the orbital masses of the galaxies with the sum of the individual masses suggests that moderately massive dark halos surround bright spiral…

Astrophysics · Physics 2009-11-07 V. P. Reshetnikov , S. A. Klimanov

We examine the rotation rates, sizes, and star formation (SF) efficiencies of a representative population of simulated disc galaxies extracted from the Galaxies-Intergalactic Medium Interaction Calculation (GIMIC) suite of cosmological…

Cosmology and Nongalactic Astrophysics · Physics 2012-11-16 Ian G. McCarthy , Joop Schaye , Andreea S. Font , Tom Theuns , Carlos S. Frenk , Robert A. Crain , Claudio Dalla Vecchia

We compare two methods of distance determination to spiral galaxies using optical/near-infrared (NIR) observations, the (I-K) versus M_K colour - absolute magnitude (CM) relation and the I and K-band Tully-Fisher relation (TFR). Dust-free…

Astrophysics · Physics 2009-10-31 R. de Grijs , R. F. Peletier

We have conducted a study of optical and HI properties of spiral galaxies (size, luminosity, H-alpha flux distribution, circular velocity, HI gas mass) to explore the role of gas stripping as a driver of morphological evolution in clusters.…

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

We present an I-band Tully-Fisher relation (TFR) for 18 nearby S0 galaxies using kinematics derived from long slit spectroscopy of stellar absorption lines. Our estimates of the circular velocity, V_c, at 2-3 exponential disk scale lengths…

Astrophysics · Physics 2009-10-31 Eyal Neistein , Dan Maoz , Hans-Walter Rix , John L. Tonry
‹ Prev 1 8 9 10 Next ›