Results 91 to 100 of about 2,114,962 (287)

Discovery of a transparent sightline at {\rho} < 20 kpc from an interacting pair of galaxies

, 2013
We report the discovery of a transparent sightline at projected distances of {\rho} < 20 kpc to an interacting pair of mature galaxies at z = 0.12. The sightline of the UV-bright quasar PG1522+101 at z = 1.328 passes at {\rho} = 11.5 kpc from the higher ...
Chen, Hsiao-Wen, Johnson, Sean D., Mulchaey, John S., Prochaska, J. Xavier, Tripp, Todd M., Werk, Jessica K.   +5 more
core   +1 more source

Star clusters in the interacting galaxy system Arp 284 [PDF]

, 2009
We present results from a study of protoglobular cluster candidates in the interacting galaxy system Arp 284 (NGC 7714/5) using data from the Hubble Space Telescope (HST). Previous studies of the Antennae and M51 have suggested that the majority of young
B. Peterson, C. Struck, Beverly J. Smith, M. Hancock   +3 more
semanticscholar   +1 more source

Dynamics of Galaxy Interactions [PDF]

, 1998
This review briefly and very informally summarizes some of my ongoing research. One unifying theme in my work is the use of computers to bridge the gap between human and astronomical time-scales. Galactic collisions are an example; the dynamics of interacting galaxies can be visualized with numerical simulations.
openaire   +2 more sources

Introducing the Condor Array Telescope. VI. Discovery of Extensive Ionized Gaseous Filaments of the Cosmic Web in the Direction of the M81 Group

The Astrophysical Journal
We used the Condor Array Telescope to obtain deep imaging observations through luminance broadband and He ii , [O iii ], He i , H α , [N ii ], and [S ii ] narrowband filters of an extended region of the M81 Group spanning ≈8 × 8 deg ^2 on the sky ...
Kenneth M. Lanzetta, Stefan Gromoll, Michael M. Shara, David Valls-Gabaud, Frederick M. Walter, John K. Webb   +5 more
doaj   +1 more source

The Spitzer Spirals, Bridges, and Tails Interacting Galaxy Survey: Interaction-Induced Star Formation in the Mid-Infrared [PDF]

, 2006
We present Spitzer mid-infrared imaging of a sample of 35 tidally distorted premerger interacting galaxy pairs selected from the Arp Atlas. We compare their global mid-infrared properties with those of normal galaxies from the SINGS Spitzer Legacy survey,
Beverly J. Smith, C. Struck, M. Hancock, P. Appleton, V. Charmandaris, W. Reach   +5 more
semanticscholar   +1 more source

Introducing the Condor Array Telescope. V. Deep Broad- and Narrowband Imaging Observations of the M81 Group

The Astrophysical Journal Supplement Series
We used the Condor Array Telescope to obtain deep imaging observations through the luminance broadband and He ii 468.6 nm, [O iii ] 500.7 nm, He i 587.5 nm, H α , [N ii ] 658.4 nm, and [S ii ] 671.6 nm narrowband filters of an extended region comprising ...
Kenneth M. Lanzetta, Stefan Gromoll, Michael M. Shara, David Valls-Gabaud, Frederick M. Walter, John K. Webb   +5 more
doaj   +1 more source

Harnessing the Hubble Space Telescope Archives: A Catalog of 21,926 Interacting Galaxies

The Astrophysical Journal, 2023
Mergers play a complex role in galaxy formation and evolution. Continuing to improve our understanding of these systems requires ever larger samples, which can be difficult (even impossible) to select from individual surveys.
David O’Ryan, Bruno Merín, Brooke D. Simmons, Antónia Vojteková, Anna Anku, Mike Walmsley, Izzy L. Garland, Tobias Géron, William Keel, Sandor Kruk, Chris J. Lintott, Kameswara Bharadwaj Mantha, Karen L. Masters, Jan Reerink, Rebecca J. Smethurst, Matthew R. Thorne   +15 more
doaj   +1 more source

Distribution of Merging and Post-merger Galaxies in Nearby Galaxy Clusters

The Astrophysical Journal
We study the incidence and spatial distribution of galaxies that are currently undergoing gravitational merging (M) or that have signs of being post-merger (PM) in six galaxy clusters (A754, A2399, A2670, A3558, A3562, and A3716) within the redshift ...
Duho Kim, Yun-Kyeong Sheen, Yara L. Jaffé, Kshitija Kelkar, Adarsh Ranjan, Franco Piraino-Cerda, Jacob P. Crossett, Ana Carolina Costa Lourenço, Garreth Martin, Julie B. Nantais, Ricardo Demarco, Ezequiel Treister, Sukyoung K. Yi   +12 more
doaj   +1 more source

GALEX Ultraviolet Observations of the Interacting Galaxy NGC 4438 in the Virgo Cluster [PDF]

, 2005
We present GALEX near-ultraviolet (2310 Å) and far-ultraviolet (1530 Å) images of the interacting galaxy NGC 4438 (Arp 120) in the center of the Virgo Cluster. These images show an extended (20 kpc) tidal tail at the northwest edge of the galaxy that was
A. Boselli, S. Boissier, L. Cortese, A. Paz, V. Buat, J. Iglesias-Páramo, B. Madore, B. Madore, T. Barlow, L. Bianchi, Y. Byun, J. Donas, K. Forster, P. Friedman, T. Heckman, P. Jelinsky, Young-Wook Lee, R. Malina, D. C. Martin, B. Milliard, P. Morrissey, S. Neff, R. Rich, D. Schiminovich, M. Seibert, O. Siegmund, T. Small, A. Szalay, B. Welsh, T. Wyder   +29 more
semanticscholar   +1 more source

Two Candidates for Dual AGN in Dwarf-dwarf Galaxy Mergers

The Astrophysical Journal, 2023
Dual active galactic nuclei (DAGN) are important for understanding galaxy-merger-triggered fueling of black holes and the hierarchical growth of structures.
Marko Mićić, Olivia J. Holmes, Brenna N. Wells, Jimmy A. Irwin   +3 more
doaj   +1 more source