Zobrazeno 1 - 10
of 734
pro vyhledávání: '"Alexandroff, A."'
Even when the direct view toward the active nucleus is obscured, nuclear emission propagating along other directions can scatter off surrounding material, become polarized and reach the observer. Spectropolarimetry can thus be an important tool in in
Externí odkaz:
http://arxiv.org/abs/2306.06303
Autor:
Vayner, Andrey, Zakamska, Nadia L., Riffel, Rogemar A., Alexandroff, Rachael, Cosens, Maren, Hamann, Fred, Perrotta, Serena, Rupke, David S. N., Bergmann, Thaisa Storchi, Veilleux, Sylvain, Walth, Greg, Wright, Shelley, Wylezalek, Dominika
Quasar-driven outflows must have made their most significant impact on galaxy formation during the epoch when massive galaxies were forming most rapidly. To study the impact of quasar feedback we conducted rest-frame optical integral field spectrogra
Externí odkaz:
http://arxiv.org/abs/2101.04688
Autor:
Dupuis, Christopher M., Borthakur, Sanchayeeta, Padave, Mansi, Jansen, Rolf A., Alexandroff, Rachael M., Heckman, Timothy M.
We present the discovery of a low-redshift damped Ly$\alpha$ (DLA) system in the spectrum of background starburst galaxy SDSS J111323.88+293039.3 ($z=0.17514$). The DLA is at an impact parameter of $\rm \rho=36~kpc$ from the star forming galaxy, SDSS
Externí odkaz:
http://arxiv.org/abs/2011.09565
Autor:
Somalwar, Jean, Johnson, Sean D., Stern, Jonathan, Goulding, Andy D., Greene, Jenny E., Zakamska, Nadia L., Alexandroff, Rachael M., Chen, Hsiao-Wen
Galactic-scale winds driven by active galactic nuclei (AGN) are often invoked to suppress star formation in galaxy evolution models, but the mechanisms driving these outflows are hotly debated. Two key AGN feedback models are (1) radiation pressure a
Externí odkaz:
http://arxiv.org/abs/2002.02454
Publikováno v:
In Science of the Total Environment 15 October 2023 895
Autor:
Spekkens, Kristine, Chiang, Cynthia, Kothes, Roland, Rosolowsky, Erik, Rupen, Michael, Safi-Harb, Samar, Sievers, Jonathan, Sivakoff, Greg, Stairs, Ingrid, van der Marel, Nienke, Abraham, Bob, Alexandroff, Rachel, Bartel, Norbert, Baum, Stefi, Bietenholz, Michael, Boley, Aaron, Bond, Dick, Brown, Joanne, Brown, Toby, Davis, Gary, English, Jayanne, Fahlman, Greg, Ferrarese, Laura, Di Francesco, James, Gaensler, Bryan, Gaudet, Severin, Graber, Vanessa, Halpern, Mark, Hill, Alex, Hlavacek-Larrondo, Julie, Irwin, Judith, Johnstone, Doug, Joncas, Gilles, Kaspi, Vicky, Kavelaars, JJ, Liu, Adrian, Matthews, Brenda, Mirocha, Jordan, Monsalve, Raul, Ng, Cherry, O'Dea, Chris, Pen, Ue-Li, Plume, Rene, Robishaw, Tim, Sadavoy, Sarah, Sanghai, Viraj, Scholz, Paul, Simard, Luc, Shaw, Richard, Singh, Saurabh, Sigurdson, Kris, Smith, Kendrick, Stevens, David, Stil, Jeroen, Tulin, Sean, van Eck, Cameron, Wall, Jasper, West, Jennifer, Woods, Tyrone, Wulf, Dallas
This white paper submitted for the 2020 Canadian Long-Range Planning process (LRP2020) presents the prospects for Canada and the Square Kilometre Array (SKA) from 2020-2030, focussing on the first phase of the project (SKA1) scheduled to begin constr
Externí odkaz:
http://arxiv.org/abs/1911.03250
Autor:
Woods, T. E., Alexandroff, R. M., Ellison, S. L., Ferrarese, L., Gallagher, S. C., Gallo, L., Haggard, D., Hall, P. B., Hlavacek-Larrondo, J., Khatu, V. C., Man, A. W. S., McGee, S., McNamara, B. R., Ruan, J., Sivakoff, G., Stairs, I. H., Willott, C.
The next generation of electromagnetic and gravitational wave observatories will open unprecedented windows to the birth of the first supermassive black holes. This has the potential to reveal their origin and growth in the first billion years, as we
Externí odkaz:
http://arxiv.org/abs/1910.06346
Autor:
Wang, Bingjie, Heckman, Timothy M., Leitherer, Claus, Alexandroff, Rachel, Borthakur, Sanchayeeta, Overzier, Roderik A.
Publikováno v:
The Astrophysical Journal, 885, 57 (2019)
The source responsible for the reionization of the Universe is believed to be the population of star-forming galaxies at $z\sim6$ to 12. The biggest uncertainty concerns the fraction of Lyman-continuum photons that actually escape from the galaxies.
Externí odkaz:
http://arxiv.org/abs/1909.01368
Autor:
Zakamska, Nadia L., Sun, Ai-Lei, Strauss, Michael A., Alexandroff, Rachael M., Brandt, W. N., Chiaberge, Marco, Greene, Jenny E., Hamann, Fred, Liu, Guilin, Perrotta, Serena, Ross, Nicholas P., Wylezalek, Dominika
We present Hubble Space Telescope 1.4-1.6 micron images of the hosts of ten extremely red quasars (ERQs) and six type 2 quasar candidates at z=2-3. ERQs, whose bolometric luminosities range between 10^47 and 10^48 erg/sec, show spectroscopic signs of
Externí odkaz:
http://arxiv.org/abs/1907.10617
We investigate Extremely Red Quasars (ERQs), a remarkable population of heavily-reddened quasars at redshift z$\sim$2 - 3 that might be caught during a short-lived 'blow-out' phase of quasar/galaxy evolution. We perform a near-IR observational campai
Externí odkaz:
http://arxiv.org/abs/1906.00980