Results 51 to 60 of about 35,736 (175)
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
A Large Mass of H_2 in the Brightest Cluster Galaxy in Zwicky 3146 [PDF]
, 2006 We present the Spitzer/IRS mid-infrared spectrum of the infrared-luminous (L_(IR) = 4 × 10^(11) L_☉) brightest cluster galaxy (BCG) in the X-ray-luminous cluster Zwicky 3146 (Z3146; z = 0.29).
Egami, E. +3 more
core
The Oxygen Abundances of Luminous and Ultraluminous Infrared Galaxies [PDF]
The Astrophysical Journal, 2008 Luminous and ultraluminous infrared galaxies (LIRGs and ULIRGs) dominate the star formation rate budget of the universe at z > 1, yet no local measurements of their heavy element abundances exist. We measure nuclear or near-nuclear oxygen abundances in a sample of 100 star-forming LIRGs and ULIRGs using new, previously published, and archival ...
David S. N. Rupke +2 more
openaire +3 more sources
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 +9 more
wiley +1 more source
, 2004 We present near-infrared and millimeter investigations of the nucleus of the infrared luminous galaxy NGC 4418, which previous observations suggest possesses a powerful buried AGN.
Kohno K. +14 more
core +1 more source
Modelling the Spectral Energy Distribution of Compact Luminous Infrared Galaxies: Constraints from High Frequency Radio Data [PDF]
, 2004 We have performed 23 GHz VLA observations of 7 compact, luminous infrared galaxies, selected to have evidence of starburst activity. New and published multi-frequency data are combined to obtain the spectral energy distributions of all 7 galaxies from ...
A. Bressan +66 more
core +1 more source
Arp 302: Nonstarburst Luminous Infrared Galaxies [PDF]
The Astrophysical Journal, 1997 AAS Latex plus two postscript figures. ApJ Letters (accepted)
Robert A. Gruendl, Yu Gao, K. Y. Lo
openaire +3 more sources
Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin +11 more
wiley +1 more source
, 2006 We report on IRAC-4.5mic, IRAC-8.0mic and MIPS-24mic deep observations of 16 Gamma-Ray Burst (GRBs) host galaxies performed with the Spitzer Space Telescope, and we investigate in the thermal infrared the presence of evolved stellar populations and dust ...
Daniel Devost +11 more
core +2 more sources
Near Infrared Adaptive Optics Imaging of QSO Host Galaxies [PDF]
, 2006 We report near-infrared (primarily H-band) adaptive optics (AO) imaging with the Gemini-N and Subaru Telescopes, of a representative sample of 32 nearby ...
Alan Stockton +10 more
core +2 more sources