Results 81 to 90 of about 2,538 (226)

First results from high redshift quasar searches in VIKING [PDF]

, 2012
This thesis presents the discovery of the first luminous z & 6.5 quasars in the VISTA kilo-degree Infrared Galaxy Survey (VIKING). After some basic quality control, quasar selection is investigated via use of initial data supplementedwith ...
Findlay, Joseph
core  

1991T-like Supernovae

The Astrophysical Journal Supplement Series
Understanding the nature of the luminous 1991T-like supernovae (SNe) is of great importance to SN cosmology as they are likely to have been more common in the early Universe.
M. M. Phillips, C. Ashall, Peter J. Brown, L. Galbany, M. A. Tucker, Christopher R. Burns, Carlos Contreras, P. Hoeflich, E. Y. Hsiao, S. Kumar, Nidia Morrell, Syed A. Uddin, E. Baron, Wendy L. Freedman, Kevin Krisciunas, S. E. Persson, Anthony L. Piro, B. J. Shappee, Maximilian Stritzinger, Nicholas B. Suntzeff, Sudeshna Chakraborty, R. P. Kirshner, J. Lu, G. H. Marion, Abigail Polin, M. Shahbandeh   +25 more
doaj   +1 more source

The environments of luminous radio-WISE selected infrared galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
17 pages, 16 figures, 2 ...
J I Penney, A W Blain, D Wylezalek, N A Hatch, C Lonsdale, A Kimball, R J Assef, J J Condon, P R M Eisenhardt, S F Jones, M Kim, M Lacy, S I Muldrew, S Petty, A Sajina, A Silva, D Stern, T Diaz-Santos, C-W Tsai, J Wu   +19 more
openaire   +4 more sources

Accretion Onto Weakly Magnetized Neutron Stars: Polarization Theory and Its Application to X‐Ray Burster GX 13+1

Astronomische Nachrichten, Volume 346, Issue 1, January 2025.
ABSTRACT Observations show that the x‐ray emission of the accreting weakly magnetized neutron stars (WMNSs) is polarized. In this article, we summarize the analytical models for the polarized emission of various components of the WMNSs. We introduce a missing theoretical model, where we assume the emission comes from the spreading layer, the extension ...
Anna Bobrikova, Sofia V. Forsblom
wiley   +1 more source

NICMOS Imaging of Infrared-Luminous Galaxies

The Astronomical Journal, 2000
We present near-infrared images obtained with the HST NICMOS camera for a sample of 9 luminous (LIGs: L_IR (8-1000 microns) >~ 10^11 L_sun) and 15 ultra-luminous (ULIGS: L_IR >~ 10^12 L_sun) infrared galaxies.
Scoville, N. Z., Evans, A. S, Thompson, R., Rieke, M., Hines, D. C., Low, F. J., Dinshaw, N., Surace, J. A., Armus, L.   +8 more
openaire   +2 more sources

Simulating supernova feedback in galaxy disks [PDF]

, 2012
In this thesis I examine supernova feedback in hydrodynamical simulations of galaxy disks. Understanding this process entails the numerical evaluation of cooling in radiative shocks, and we present a set of simulations using two widely used numerical ...
CREASEY, PETER,EDWARD, Creasey, Peter Edward   +1 more
core  

Off-nuclear star formation and obscured activity in the luminous infrared galaxy NGC 2623 [PDF]

, 2008
New optical Hubble Space Telescope (HST), Spitzer Space Telescope, and XMM observations of the luminous infrared galaxy (LIRG) NGC 2623 are presented. This galaxy was observed as part of the Great Observatories All-sky LIRG Survey (GOALS).
Modica, F., Howell, J. H., Surace, J., Spoon, H. W. W., Iwasawa, K., Pizagno, J., Armus, L., Chan, B., Suer, T. A., Lord, S., Barnes, J. E., Suer, T., Surace, J. A., Petric, A., Spoon, H., Evans, A. S., Evans, A., Mazzarella, J., Petric, A. O., Howell, J., Barnes, J., Mazzarella, J. M., Vavilkin, T., Sanders, D., Sanders, D. B.   +24 more
core   +1 more source

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source

An X-Ray Significantly Variable, Luminous, Type 2 Quasar at z = 2.99 with a Massive Host Galaxy

The Astrophysical Journal
We present a comprehensive X-ray analysis and spectral energy distribution (SED) fitting of WISEA J171419.96+602724.6, an extremely luminous type 2 quasar at z = 2.99.
Xiurui Zhao, Stefano Marchesi, Marco Ajello, Francesca Civano, Roberto Gilli, Giorgio Lanzuisi, Iván E. López, Peter G. Boorman, Ross Silver, Nuria Torres-Albà, Andrealuna Pizzetti   +10 more
doaj   +1 more source

Silicates in Ultraluminous Infrared Galaxies

The Astrophysical Journal, 2008
We analyze the mid-infrared (MIR) spectra of ultraluminous infrared galaxies (ULIRGs) observed with the Spitzer Space Telescope's Infrared Spectrograph. Dust emission dominates the MIR spectra of ULIRGs, and the reprocessed radiation that emerges is independent of the underlying heating spectrum.
Sirocky, M. M., Levenson, N. A., Elitzur, M., Spoon, H. W. W., Armus, L.   +4 more
openaire   +4 more sources