Results 51 to 60 of about 214,530 (262)

Intrinsic galaxy shapes and alignments II: Modelling the intrinsic alignment contamination of weak lensing surveys [PDF]

, 2013
Intrinsic galaxy alignments constitute the major astrophysical systematic of forthcoming weak gravitational lensing surveys but also yield unique insights into galaxy formation and evolution. We build analytic models for the distribution of galaxy shapes
Bett, P. E., Hartlap, J., Hilbert, S., Hoekstra, H., Joachimi, B., Schneider, P., Semboloni, E.   +6 more
core   +2 more sources

Observational Evidence for an Age Dependence of Halo Bias

, 2006
We study the dependence of the cross-correlation between galaxies and galaxy groups on group properties. Confirming previous results, we find that the correlation strength is stronger for more massive groups, in good agreement with the expected mass ...
Frank C. van den Bosch, Gao L., H. J. Mo, Mo H. J., Weinmann S. M., Xiaohu Yang   +5 more
core   +2 more sources

Galaxy interactions II: High density environments [PDF]

, 2011
With the aim to assess the role of dense environments in galaxy interactions, properties we present an analysis of close galaxy pairs in groups and clusters, obtained from the Sloan Digital Sky Survey Data Release 7 (SDSS-DR7).
Abazajian, Abazajian, Alonso, Alonso, Alonso, Baldry, Baldry, Balogh, Balogh, Balogh, Barton, Berlind, Blanton, Brinchmann, Ceccarelli, Colless, Cooper, Cooper, Coziol, D. G. Lambas, Darg, De Lucia, Dressler, Ellison, González, González, Gunn, Heiderman, Hopkins, Hopkins, Huchra, Kauffmann, Kennicutt, Lacerna, Lambas, Lambas, Lin, Mamon, Mamon, McIntosh, Merchán, Michel-Dansac, Morgan, N. Padilla, Padilla, Padilla, Padilla, Park, Patton, Pérez, Robaina, S. Alonso, Simard, Skibba, Skibba, Strauss, V. Mesa, von der Linden, Wang, Wong, Yang, York, Zapata, Zibetti, Zwicky   +64 more
core   +1 more source

Properties of cD Galaxies [PDF]

Symposium - International Astronomical Union, 1987
cD galaxies are the most luminous galaxies in the universe. They are characterized by a surface brightness profile that falls off more slowly with radius than most elliptical galaxies. In most respects D galaxies are a continuous extrapolation from other ellipticals: their M/L and their colors are comparable to other ellipticals, their inner parts are ...
openaire   +1 more source

Photometric structure of the peculiar galaxy ESO 235-G58

, 2004
We present the near-infrared and optical properties of the peculiar galaxy ESO 235-G58, which resembles a late-type ringed barred spiral seen close to face-on.
Arnaboldi, Arnaboldi, Athanassoula, Bell, Bothun, Bothun, Bournaud, Bruzual, Buta, Buta, Buta, Cardelli, de Jong, de Jong, E. Iodice, Erwin, Iodice, Iodice, Iodice, Iodice, Iodice, Jungwiert, K. C. Freeman, Khosroshahi, Knapen, L. S. Sparke, M. Arnaboldi, M. Capaccioli, Makarova, McGaugh, McGregor, Michard, Michard, Möllenhoff, O'Neil, R. Buta, Reshetnikov, Rieke, Salpeter, Schlegel, Scorza, van Driel, van Driel, van Driel, van Gorkom, Walterbos, Whitmore, Wozniak   +47 more
core   +1 more source

ORBITAL DEPENDENCE OF GALAXY PROPERTIES IN SATELLITE SYSTEMS OF GALAXIES [PDF]

The Astrophysical Journal, 2010
12 pages, 18 figures.
Hwang, Ho Seong, Park, Changbom
openaire   +2 more sources

Beyond mass: detecting secondary halo properties with galaxy-galaxy lensing

Monthly Notices of the Royal Astronomical Society, 2022
ABSTRACTSecondary halo properties beyond mass, such as the mass accretion rate (MAR), concentration, and the half mass scale, are essential in understanding the formation of large-scale structure and dark matter haloes. In this paper, we study the impact of secondary halo properties on the galaxy-galaxy lensing observable, ΔΣ.
Enia Xhakaj, Alexie Leauthaud, Johannes Lange, Andrew Hearin, Benedikt Diemer, Neal Dalal   +5 more
openaire   +2 more sources

Controlling 3D Contractility via Engineered Fibrous Hydrogel Composites

Advanced Functional Materials, EarlyView.
A tunable composite contractile assembly (CCA) is developed that can permit or resist contraction without changing cell‐adhesion and density, unlike collagen whose inherent coupling of these ECM cues limits its use as a platform in contractility studies.
Karen L. Xu, Yuqi Zhang, Alysse DeFoe, Georgios Kotsaris, Brendan Stoeckl, Matthew D. Davidson, Jason A. Burdick, Robert L. Mauck   +7 more
wiley   +1 more source

Revealing the Galaxy–Halo Connection through Machine Learning

The Astrophysical Journal, 2023
Understanding the connections between galaxy stellar mass, star formation rate, and dark matter halo mass represents a key goal of the theory of galaxy formation. Cosmological simulations that include hydrodynamics, physical treatments of star formation,
Ryan Hausen, Brant E. Robertson, Hanjue Zhu, Nickolay Y. Gnedin, Piero Madau, Evan E. Schneider, Bruno Villasenor, Nicole E. Drakos   +7 more
doaj   +1 more source

The Globular Cluster Population of NGC 7457: Clues to the Evolution of Field S0 Galaxies [PDF]

, 2011
In this paper we present the results of a wide-field imaging study of the globular cluster (GC) system of the field S0 galaxy NGC 7457. To derive the global properties of the GC system, we obtained deep BVR images with the WIYN 3.5 m telescope and ...
Balcells, Bekki, Carter, Chapelon, Chomiuk, Combes, de Vaucouleurs, Dressler, Fisher, Fisher, Ho, Jay Strader, Jean P. Brodie, Jedrzejewski, Jonathan R. Hargis, Katherine L. Rhode, Kundu, Kundu, Kundu, Muratov, Méndez, Peng, Poulain, Rhode, Rhode, Rhode, Rhode, Rhode, Rhode, Sandage, Schlegel, Schweizer, Shen, Sil'chenko, Tonry, Trumpler, Tully, Zepf, Zinn   +38 more
core   +3 more sources