Results 1 to 10 of about 2,072,111 (357)

Simulations of Dust in Interacting Galaxies [PDF]

AIP Conference Proceedings, 2004
A new Monte-Carlo radiative-transfer code, Sunrise, is used to study the effects of dust in N-body/hydrodynamic simulations of interacting galaxies. Dust has a profound effect on the appearance of the simulated galaxies.
Cox, T. J., Jonsson, Patrik, Primack, Joel R.   +2 more
core   +5 more sources

Interacting galaxies and cosmological parameters [PDF]

Astronomy & Astrophysics, 2006
We propose a (physical)-geometrical method to measure the present rates of the density cosmological parameters for a Friedmann-Lemaitre universe. The distribution of linear separations between two interacting galaxies,when both of them undergo a first ...
Barnes, Berger, Blanchard, Chen, Croom, Dashveski, Demianski, Djorgovski, Dyer, Goldhabber, Guerra, Gurvits, H. Reboul, J.-P. Cordoni, Kellermann, Le Fèvre, Lemaître, Lima, Mihos, Reboul, Reboul, Remijan, Riess, Robertson, Sahni, Sanders, Schmidt, Springel, Steidel, Tolman, Toomre, Vanderriest, Véron, Zhu, Zhu, Zhu   +35 more
core   +11 more sources

Isolated and Interacting Galaxies: Simulations with GRAPE [PDF]

Symposium - International Astronomical Union, 2003
I present N-body simulations of isolated and interacting galaxies, made on GRAPE machines. In particular I discuss the formation and evolution of N-body bars and compare their properties to those of bars in early-type and late-type galactic discs. I argue that the halo can help the bar grow, contrary to previous beliefs, by taking positive angular ...
E. Athanassoula
openaire   +5 more sources

The SEDs of interacting galaxies [PDF]

Proceedings of the International Astronomical Union, 2011
AbstractThe evolution of galaxies is greatly influenced by their interactions. As part of a program to study interacting galaxies, we have measured and modeled the spectral energy distributions (SEDs) from the ultraviolet (UV) to the far-infrared (FIR).
Elisabete da Cunha, C. R. Klein, Matthew L. N. Ashby, Christopher C. Hayward, Lauranne Lanz, Patrik Jonsson, Giovanni G. Fazio, Nicola Brassington, Howard A. Smith, Lars Hernquist, Andreas Zezas   +10 more
openaire   +4 more sources

INTERACTIONS OF GALAXIES IN THE GALAXY CLUSTER ENVIRONMENT [PDF]

The Astrophysical Journal, 2009
We study the dependence of galaxy properties on the clustercentric radius and the environment attributed to the nearest neighbor galaxy using the SDSS galaxies associated with the Abell galaxy clusters. We find that there exists a characteristic scale where the properties of galaxies suddenly start to depend on the clustercentric radius at fixed ...
Changbom Park, Ho Seong Hwang
openaire   +3 more sources

Testing the Radio-selection Method of Dual Active Galactic Nuclei in the Stripe 82 Field

The Astrophysical Journal, 2023
We test the merger-induced dual active galactic nuclei (dAGNs) paradigm using a sample of 35 radio galaxy pairs from the Sloan Digital Sky Survey Stripe 82 field.
Arran C. Gross, Hai Fu, A. D. Myers, S. G. Djorgovski, Joshua L. Steffen, J. M. Wrobel   +5 more
doaj   +1 more source

Active galactic nuclei and galaxy interactions [PDF]

Monthly Notices of the Royal Astronomical Society, 2007
We perform a statistical analysis of AGN host characteristics and nuclear activity for AGNs in pairs and without companions. Our study concerns a sample of AGNs derived from the SDSS-DR4 data by Kauffmann et al (2003) and pair galaxies obtained from the same data set by Alonso et al. (2006).
Alonso, M. Sol, Garcia Lambas, Diego Rodolfo, Tissera, Patricia Beatriz, Coldwell, Georgina   +3 more
openaire   +5 more sources

Searching for TeV Dark Matter in Irregular Dwarf Galaxies with HAWC Observatory

The Astrophysical Journal, 2023
We present the results of dark matter (DM) searches in a sample of 31 dwarf irregular (dIrr) galaxies within the field of view of the HAWC Observatory.
R. Alfaro, C. Alvarez, J. C. Arteaga-Velázquez, D. Avila Rojas, H. A. Ayala Solares, R. Babu, E. Belmont-Moreno, K. S. Caballero-Mora, T. Capistrán, A. Carramiñana, S. Casanova, O. Chaparro-Amaro, U. Cotti, J. Cotzomi, E. De la Fuente, R. Diaz Hernandez, B. L. Dingus, M. A. DuVernois, M. Durocher, J. C. Díaz-Vélez, C. Espinoza, K. L. Fan, N. Fraija, J. A. García-González, F. Garfias, M. M. González, J. P. Harding, S. Hernández-Cadena, D. Huang, F. Hueyotl-Zahuantitla, A. Iriarte, V. Joshi, S. Kaufmann, D. Kieda, J. Lee, H. León Vargas, J. T. Linnemann, A. L. Longinotti, G. Luis-Raya, K. Malone, O. Martinez, J. Martínez-Castro, J. A. Matthews, E. Moreno, M. Mostafá, A. Nayerhoda, L. Nellen, N. Omodei, Y. Pérez Araujo, E. G. Pérez-Pérez, C. D. Rho, D. Rosa-González, H. Salazar, D. Salazar-Gallegos, A. Sandoval, J. Serna-Franco, Y. Son, R. W. Springer, O. Tibolla, K. Tollefson, I. Torres, R. Torres-Escobedo, R. Turner, F. Ureña-Mena, L. Villaseñor, X. Wang, E. Willox, H. Zhou, C. de León, The HAWC Collaboration, V. Gammaldi, E. Karukes, P. Salucci   +72 more
doaj   +1 more source

Triggering Star Formation by Galaxy-Galaxy Interactions [PDF]

Symposium - International Astronomical Union, 2004
We analyzed the effects of having a close companion on the star formation activity of galaxies in the 8K galaxy pair catalog selected from the 2dFGRS. We found that, statistically, galaxies with rp < 25h−1 kpc and ΔV < 100km s−1 have enhanced star formation with respect to isolated galaxies with the same luminosity and redshift distribution.
M. S. Alonso, Diego G. Lambas, P. B. Tissera, G. Coldwell   +3 more
openaire   +3 more sources

Exploring the Impact of Galactic Interactions and Mergers on the Central Star Formation of APEX/EDGE–CALIFA Galaxies

The Astrophysical Journal, 2023
Galactic interactions and subsequent mergers are a paramount channel for galaxy evolution. In this work, we use the data from 236 star-forming CALIFA galaxies with integrated molecular gas observations in their central region (approximately within an ...
Yeny Garay-Solis, Jorge K. Barrera-Ballesteros, Dario Colombo, Sebastián F. Sánchez, Alejandra Z. Lugo-Aranda, Vicente Villanueva, Tony Wong, Alberto D. Bolatto   +7 more
doaj   +1 more source