Results 171 to 180 of about 688,273 (301)

Hunting for extremely metal-poor emission-line galaxies in the Sloan Digital Sky Survey: MMT and 3.5 m APO observations [PDF]

, 2012
Y. I. Izotov, T. X. Thuan, Natalia G. Guseva, Y. I. Izotov, T. X. Thuan, Natalia G. Guseva   +5 more
openalex   +1 more source

Comparative Photometry of the Quiet Quasar PDS 456 and the Radio-Loud Blazar 3C 273

Galaxies
A comparative analysis of the photometric variability of the blazar 3C 273 and the quasar PDS 456 using multi-band data from ground- and space-based platforms (2015–2025) reveals contrasting behaviors.
Alberto Silva Betzler, Ingrid dos Santos Delfino, Agábio Brasil dos Santos, Roberto Mendes Dias, Orahcio Felicio de Sousa   +4 more
doaj   +1 more source

Ratios of forbidden [OIII] λλ4959,5007 and [NII] λλ6548,6583 lines in nearby narrow emission line galaxies

Frontiers in Astronomy and Space Sciences
Galaxies with narrow emission lines play a crucial role in testing the theoretical values of transition probabilities, especially for lines that need conditions that are hard to produce in laboratory plasma, and hence the theoretical values could not be ...
Natas̆a Bon, Edi Bon, Paola Marziani, Luka C̆. Popović   +3 more
doaj   +1 more source

Galaxy And Mass Assembly (GAMA): refining the local galaxy merger rate using morphological information [PDF]

, 2014
Kevin Casteels, Christopher J. Conselice, S. P. Bamford, Eduard Salvador-Solé, P. Norberg, N. K. Agius, I. K. Baldry, Sarah Brough, M. J. I. Brown, M. J. Drinkwater, Simon P. Driver, Alister W. Graham, Joss Bland‐Hawthorn, Andrew Hopkins, L. S. Kelvin, Á. R. López-Sánchez, J. Loveday, A. S. G. Robotham, J. A. Vázquez-Mata   +18 more
openalex   +1 more source

Spectral Analysis of Star-Forming Galaxies at z < 0.4 with FADO: Impact of Nebular Continuum on Galaxy Properties

Universe
The star formation rate (SFR) is a crucial astrophysical characteristic for understanding the formation and evolution of galaxies, determining the interplay between the interstellar medium and stellar activity. The mainstream approach to studying stellar
Yaosong Yu, Qihang Chen, Liang Jing, Ciro Pappalardo, Henrique Miranda   +4 more
doaj   +1 more source

Weak lensing by galaxy troughs in DES Science Verification data [PDF]

, 2015
D. Gruen, O. Friedrich, A. Amara, David Bacon, C. Bonnett, W G Hartley, Bhuvnesh Jain, Mike Jarvis, Tomasz Kacprzak, E. Krause, A. Mana, Eduardo Rozo, E. S. Rykoff, S. Seitz, E. Sheldon, M. A. Troxel, V. Vikram, T. M. C. Abbott, F. B. Abdalla, S. Allam, R. Armstrong, M. Banerji, A. H. Bauer, M. R. Becker, A. Benoit-Lévy, G. M. Bernstein, R. A. Bernstein, E. Bertin, S. L. Bridle, D. Brooks, E. Buckley‐Geer, D. L. Burke, D. Capozzi, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Crocce, C. E. Cunha, C. B. D’Andrea, L. N. da Costa, D. L. DePoy, S. Desai, H. T. Diehl, J. P. Dietrich, P. Doel, T. F. Eifler, A. Fausti Neto, E. Fernández, B. Flaugher, P. Fosalba, J. Frieman, D. W. Gerdes, R. A. Gruendl, G. Gutiérrez, K. Honscheid, D. J. James, K. Kuehn, N. Kuropatkin, O. Lahav, T. S. Li, M. Lima, M. A. G. Maia, M. March, Paul Martini, P. Melchior, C. J. Miller, R. Miquel, J. J. Mohr, B. Nord, R. L. C. Ogando, A. A. Plazas, K. Reil, A. K. Romer, A. Roodman, M. Šako, E. Sánchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, Rory Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E. C. Swanson, G. Tarlé, J. Thaler, D. Thomas, A. R. Walker, Risa H. Wechsler, J. Weller, Y. Zhang, J. Zuntz   +91 more
openalex   +1 more source

Evolution of Size, Mass, and Density of Galaxies Since Cosmic Dawn

Galaxies
The formation and evolution of galaxies and other astrophysical objects have become of great interest, especially since the launch of the James Webb Space Telescope in 2021.
Rajendra P. Gupta
doaj   +1 more source

SUBMILLIMETER OBSERVATIONS OF MILLIMETER BRIGHT GALAXIES DISCOVERED BY THE SOUTH POLE TELESCOPE [PDF]

, 2012
T. R. Greve, J. D. Vieira, A. Weiß, James E. Aguirre, K. A. Aird, M. L. N. Ashby, B. A. Benson, L. E. Bleem, C. M. Bradford, M. Brodwin, J. E. Carlstrom, C. L. Chang, S. C. Chapman, T. M. Crawford, C. De Breuck, T. de Haan, M. Dobbs, T. P. Downes, C. D. Fassnacht, G. G. Fazio, E. M. George, M. D. Gladders, Anthony H. Gonzalez, N. W. Halverson, Yashar Hezaveh, F. W. High, G. P. Holder, W. L. Holzapfel, S. Hoover, J. D. Hrubes, Michael D. Johnson, R. Keisler, L. Knox, A. T. Lee, E. M. Leitch, M. Lueker, D. Luong-Van, Matthew A. Malkan, Daniel P. Marrone, V. J. McIntyre, J. J. McMahon, J. Mehl, K. M. Menten, S. S. Meyer, T. E. Montroy, E. J. Murphy, T. Natoli, S. Padin, T. Plagge, C. Pryke, C. L. Reichardt, A. Rest, Marc B. Rosenman, J. Ruel, J. E. Ruhl, K. K. Schaffer, Keren Sharon, L. Shaw, E. Shirokoff, B. Stalder, S. A. Stanford, Z. Staniszewski, A. A. Stark, K. T. Story, K. Vanderlinde, W. Walsh, N. Welikala, R. Williamson   +67 more
openalex   +1 more source

Orientation of galaxies in galaxy triplets

The Astrophysical Journal, 1993
It is shown that normals to planes of galaxies constituting triplets are distributed anisotropically. They prefer to make small angles, which in the case of spiral galaxies corresponds to parallelism of rotation axes and they avoid ...
openaire   +1 more source

The Mass Profile of NGC 3268 from Its Stellar Kinematics

Universe
The mass profile of the central galaxy of the Antlia cluster, NGC 3268, is studied through a spherical Jeans analysis, combined with a Bayesian approach. The prior distributions are derived from dark matter simulations. The observational dataset consists
Juan Pablo Caso, Bruno Javier De Bórtoli, Tom Richtler   +2 more
doaj   +1 more source