Zobrazeno 21 - 30
of 222
pro vyhledávání: '"Nyland, Kristina"'
Autor:
Zou, Fan, Brandt, W. N., Lacy, Mark, Ni, Qingling, Nyland, Kristina, Yang, Guang, Bauer, Franz E., Covone, Giovanni, Grado, Aniello, Napolitano, Nicola R., Paolillo, Maurizio, Radovich, Mario, Spavone, Marilena, Vaccari, Mattia
Publikováno v:
Res. Notes AAS 5 31 (2021)
The ELAIS-S1 field will be an LSST Deep Drilling field, and it also has extensive multiwavelength coverage. To improve the utility of the existing data, we use The Tractor to perform forced-photometry measurements in this field. We compile data in 16
Externí odkaz:
http://arxiv.org/abs/2102.11892
Autor:
Nyland, Kristina, Dong, Dillon Z., Patil, Pallavi, Lacy, Mark, van Velzen, Sjoert, Kimball, Amy E., Sarbadhicary, Sumit, Hallinan, Gregg, Baldassare, Vivienne, Clarke, Tracy, Goulding, Andy D., Greene, Jenny E., Hughes, Andrew, Kassim, Namir, Kunert-Bajraszewska, Magdalena, Maccarone, Thomas J., Mooley, Kunal, Mukherjee, Dipanjan, Peters, Wendy, Petrov, Leonid, Polisensky, Emil, Rujopakarn, Wiphu, Whittle, Mark, Vaccari, Mattia
We have performed a search over 3440 deg$^2$ of Epoch 1 (2017-2019) of the Very Large Array Sky Survey to identify unobscured quasars in the optical ($0.2 < z < 3.2$) and obscured active galactic nuclei (AGN) in the infrared that have brightened dram
Externí odkaz:
http://arxiv.org/abs/2011.08872
A global understanding of Active Galactic Nuclei (AGN) and their host galaxies hinges on completing a census of AGN activity without selection biases down to the low-luminosity regime. Toward that goal, we identify AGN within faint radio populations
Externí odkaz:
http://arxiv.org/abs/2008.11208
Autor:
Davis, Timothy A., Nguyen, Dieu D., Seth, Anil C., Greene, Jenny E., Nyland, Kristina, Barth, Aaron J., Bureau, Martin, Cappellari, Michele, Brok, Mark den, Iguchi, Satoru, Lelli, Federico, Liu, Lijie, Neumayer, Nadine, North, Eve V., Onishi, Kyoko, Sarzi, Marc, Smith, Mark D., Williams, Thomas G.
We estimate the mass of the intermediate-mass black hole at the heart of the dwarf elliptical galaxy NGC 404 using Atacama Large Millimeter/submillimeter Array (ALMA) observations of the molecular interstellar medium at an unprecedented linear resolu
Externí odkaz:
http://arxiv.org/abs/2007.05536
Autor:
Gendron-Marsolais, Marie-Lou, Hlavacek-Larrondo, Julie, van Weeren, Reinout J., Rudnick, Lawrence, Clarke, Tracy E., Sebastian, Biny, Mroczkowski, Tony, Fabian, Andrew C., Blundell, Katherine M., Sheldahl, Evan, Nyland, Kristina, Sanders, Jeremy S., Peters, Wendy M., Intema, Huib T.
We present the first high-resolution 230-470 MHz map of the Perseus cluster obtained with the Karl G. Jansky Very Large Array. The high dynamic range and resolution achieved has allowed the identification of previously-unknown structures in this near
Externí odkaz:
http://arxiv.org/abs/2005.12298
Autor:
Nyland, Kristina, Dong, Dillon, Patil, Pallavi, Lacy, Mark, Kimball, Amy, Hallinan, Gregg, Sarbadhicary, Sumit, Polisensky, Emil, Kassim, Namir, Peters, Wendy, Clarke, Tracy, Mukherjee, Dipanjan, van Velzen, Sjoert, Baldassare, Vivienne
Publikováno v:
Proc. IAU 15 (2020) 27-32
As part of an on-going study of radio transients in Epoch 1 (2017-2019) of the Very Large Array Sky Survey (VLASS), we have discovered a sample of 0.2
Externí odkaz:
http://arxiv.org/abs/2005.04734
Autor:
Patil, Pallavi, Nyland, Kristina, Whittle, Mark, Lonsdale, Carol, Lacy, Mark, Lonsdale, Colin, Mukherjee, Dipanjan, Trapp, A. C., Kimball, Amy E., Lanz, Lauranne, Wilkes, Belinda J., Blain, Andrew, Harwood, Jeremy J., Efstathiou, Andreas, Vlahakis, Catherine
We present new sub-arcsecond-resolution Karl G. Jansky Very Large Array (VLA) imaging at 10 GHz of 155 ultra-luminous ($L_{\rm bol}\sim10^{11.7-14.2} L_\odot$) and heavily obscured quasars with redshifts $z \sim0.4-3$. The sample was selected to have
Externí odkaz:
http://arxiv.org/abs/2004.07914
Autor:
Sridhar, Sarrvesh S., Morganti, Raffaella, Nyland, Kristina, Frank, Bradley S., Harwood, Jeremy, Oosterloo, Tom
Publikováno v:
A&A 634, A108 (2020)
Low-power radio sources dominate the radio sky. They tend to be small in size and core-dominated, but the origin of their properties and the evolution of their radio plasma are not well constrained. Interestingly, there is mounting evidence that low-
Externí odkaz:
http://arxiv.org/abs/1912.04812
Autor:
Krefting, Nick, Sajina, Anna, Lacy, Mark, Nyland, Kristina, Farrah, Duncan, Darvish, Behnam, Duivenvoorden, Steven, Duncan, Ken, Gonzalez-Perez, Violeta, Lagos, Claudia del P., Oliver, Seb, Shirley, Raphael, Vaccari, Mattia
We use photometric redshifts derived from new $u$-band through 4.5$\mu$m Spitzer IRAC photometry in the 4.8\,deg$^2$ of the XMM-LSS field to construct surface density maps in the redshift range 0.1-1.5. Our density maps show evidence for large-scale
Externí odkaz:
http://arxiv.org/abs/1912.02238
Autor:
Liu, Xin, Hou, Meicun, Li, Zhiyuan, Nyland, Kristina, Guo, Hengxiao, Kong, Minzhi, Shen, Yue, Wrobel, Joan M., Peng, Sijia
Publikováno v:
Astrophys.J.887:90,2019
We report the discovery of SDSS J0849+1114 as the first known triple Type 2 Seyfert nucleus. It represents three active black holes that are identified from new spatially resolved optical slit spectroscopy using the Dual Imaging Spectrograph on the 3
Externí odkaz:
http://arxiv.org/abs/1907.10639