Results 71 to 80 of about 3,105 (226)
A Pair of Leading Spiral Arms in a Luminous Infrared Galaxy? [PDF]
The Astrophysical Journal, 2008 Leading spiral arms are a rare phenomenon. We present here one of the very few convincing candidates of spiral arms opening counter-intuitively in the same direction as the galaxy disk is rotating. This detection in a luminous IR galaxy (LIRG) IRAS 18293-3134 is based on near infrared (NIR) adaptive optics imaging with the Very Large Telescope and long-
Vaisanen, Petri +3 more
openaire +2 more sources
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
Measuring the star formation rate density from CNOC2 [PDF]
, 2006 This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core
The Astronomical JournalObservations of young star clusters in a variety of galaxies have been used to constrain basic properties related to star formation, such as the fraction of stars found in clusters (Γ) and the shape of the cluster mass function (CMF).
Miranda Caputo +5 more
doaj +1 more source
Constraining dark energy using real and mock galaxy surveys [PDF]
, 2009 In this thesis, we study how dark energy may be constrained by measurements of large-scale clustering in future galaxy surveys, and through the imprint of a time-varying large-scale potential on the CMB (the integrated Sachs-Wolfe effect).
CAI, YANCHUAN
core
Chemistry in luminous galaxies.
, 2019 The chemical composition is a sensitive probe of physical condition in molecular clouds. With ALMA, astrochemical studies are possible in external galaxies.
Harada, Nanase, Harada, Nanase (8166546)
core +1 more source
An Hα Impression of Lyα Galaxies at z ≃ 6 with Deep JWST/NIRCam Imaging
The Astrophysical Journal Letters, 2023 We present a study of seven spectroscopically confirmed (Ly α -emitting) galaxies at redshift z ≃ 6 using the JWST/NIRCam imaging data. These galaxies, with a wide range of Ly α luminosities, were recently observed in a series of NIRCam broad and medium ...
Yuanhang Ning +5 more
doaj +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. +8 more
openaire +2 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
The Astrophysical JournalWe present a kinematic study of six IR-luminous galaxies observed with the Mid-infrared Instrument Medium-resolution Spectrometer (MIRI/MRS) on board JWST.
Miriam Eleazer +15 more
doaj +1 more source