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Context. Models of hierarchical structure formation predict the accretion of smaller satellite galaxies onto more massive systems and this process should be accompanied by a disintegration of the smaller companions visible, e.g., in tidal…

星系天体物理 · 物理学 2015-05-27 Arpad Miskolczi , Dominik J. Bomans , Ralf-Jürgen Dettmar

In hierarchical models of galaxy formation, stellar tidal streams are expected around most, if not all, galaxies. Although these features may provide useful diagnostics of the $\Lambda$CDM model, their observational properties remain poorly…

[Abridged] Within the hierarchical framework for galaxy formation, minor merging and tidal interactions are expected to shape all large galaxies to the present day. As a consequence, most seemingly normal disk galaxies should be surrounded…

Thanks to new advances in astronomical imaging, we can now routinely explore disk galaxy profiles about two magnitudes deeper than the data available 20 years ago. In this regard, it is an opportune time to reevaluate the past…

星系天体物理 · 物理学 2026-01-14 Samane Raji , Ignacio Trujillo , Fernando Buitrago , Giulia Golini , Ignacio Ruiz Cejudo

We study the structure of thick discs in extraordinary depth by reaching a surface brightness limit of $\mu_{r_{\rm deep}} \sim$28.5$-$29~mag arcsec$^{-2}$ with combined $g$,$r$,$i$ band images from the IAC Stripe 82 Legacy Project. We…

星系天体物理 · 物理学 2019-08-28 C. Martínez-Lombilla , J. H. Knapen

Tidal debris around galaxies can yield important clues on their evolution. We have identified tidal debris in 11 early type galaxies (T \leq 0) from a sample of 65 early types drawn from the Spitzer Survey of Stellar Structure in Galaxies…

We study the properties of galaxies with very thin discs using a sample of 85 objects whose stellar disc radial-to-vertical scale ratio determined from photometric decomposition, exceeds nine. We present evidences of similarities between…

星系天体物理 · 物理学 2016-12-06 D. V. Bizyaev , S. J. Kautsch , N. Ya. Sotnikova , V. P. Reshetnikov , A. V. Mosenkov

We present the results of our analysis of the geometrical tidal tail characteristics for nearby and distant interacting galaxies. The sample includes more than two hundred nearby galaxies and about seven hundred distant ones. The distant…

宇宙学与河外天体物理 · 物理学 2015-05-30 Y. H. Mohamed , V. P. Reshetnikov , N. Ya. Sotnikova

We measure the radial $g-i$ colour profiles of $\sim$32,000 galaxies drawn from the Hyper Suprime-Cam Subaru Strategic Program optical imaging survey, including 1415 exhibiting tidal features. We compare the colour profiles of galaxies with…

星系天体物理 · 物理学 2026-01-30 A. Desmons , S. Brough , L. Canepa , A. Khalid

In a sample of 54 galaxy clusters (0.04<z<0.15) containing 3551 early-type galaxies suitable for study, we identify those with tidal features both interactively and automatically. We find that ~3% have tidal features that can be detected…

宇宙学与河外天体物理 · 物理学 2015-06-11 Scott M. Adams , Dennis Zaritsky , David J. Sand , Melissa Graham , Chris Bildfell , Henk Hoekstra , Chris Pritchet

Tidal features from galaxy mergers, particularly stellar streams, offer valuable insights into galaxy assembly and dark matter halo properties. This paper aims to identify a large sample of nearby stellar streams suitable for detailed…

We present an analysis of the detectability of faint tidal features in galaxies from the wide-field component of the Canada-France-Hawaii Telescope Legacy Survey. Our sample consists of 1781 luminous M_r<-19.3 mag) galaxies in the magnitude…

宇宙学与河外天体物理 · 物理学 2015-06-12 Adam M. Atkinson , Roberto G. Abraham , Annette M. N. Ferguson

We present a catalog of true edge-on disk galaxies automatically selected from the Seventh Data Release (DR7) of the Sloan Digital Sky Survey. A visual inspection of the $g$, $r$ and $i$ images of about 15000 galaxies allowed us to split…

The survey description and near-infrared properties for 92 galaxies are presented for the Extended Disc Galaxy Exploration Science (EDGES) Survey, along with an investigation into the properties of the stellar halos of these galaxies. EDGES…

星系天体物理 · 物理学 2019-04-24 Shawn M. Staudaher , Daniel A. Dale , Liese Van Zee

This paper is the first part in our series on the influence of tidal interactions and minor mergers on the radial and vertical disk structure of spiral galaxies. We report on the sample selection, our observations, and data reduction.…

天体物理学 · 物理学 2010-01-25 U. Schwarzkopf , R. -J. Dettmar

We present a sample of 950 edge-on spiral galaxies found with the use of an artificial neural network in the Hubble Space Telescope COSMOS field. This is currently the largest sample of distant edge-on galaxies. For all galaxies we analyzed…

星系天体物理 · 物理学 2024-01-12 P. A. Usachev , V. P. Reshetnikov , S. S. Savchenko

Hierarchical galactic evolution models predict that mergers drive galaxy growth, producing low surface brightness (LSB) tidal features that trace galaxies' late assembly. These faint structures encode information about past mergers and are…

We search for and find fossil evidence that the distribution of the spin axes of galaxies in cosmic web filaments relative to their host filaments are not randomly distributed. This would indicate that the action of large scale tidal…

宇宙学与河外天体物理 · 物理学 2015-05-18 Bernard J. T. Jones , Rien van de Weygaert , Miguel A. Aragon-Calvo

The characterization of Low Surface Brightness (LSB) stellar structures around galaxies such as tidal debris of on-going or past collisions is essential to constrain models of galactic evolution. Our goal is to obtain quantitative…

We studied a sample of 58 edge-on spiral galaxies at redshifts $z \sim 1$ selected in the Hubble Ultra Deep Field. For all galaxies we analyzed the 2D brightness distributions in the $V_{606}$ and $i_{775}$ filters and measured the radial…

星系天体物理 · 物理学 2020-01-08 V. P. Reshetnikov , P. A. Usachev , S. S. Savchenko
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