Results 41 to 50 of about 35,842 (270)
Annals of the New York Academy of Sciences, Volume 1519, Issue 1, Page 7-19, January 2023., 2023 We review the long‐term climate variations during the last 540 million years (Phanerozoic Eon). We first summarize the geological and geochemical datasets available for reconstruction of long‐term climate variations. We then explore the main drivers of climate that appear to explain a large fraction of these climatic oscillations. The first is the long‐
Nir J. Shaviv +2 more
wiley +1 more source
Spectroscopy of Luminous Infrared Galaxies [PDF]
Symposium - International Astronomical Union, 1999 A review of recent optical and infrared spectroscopic results on luminous infrared galaxies is presented. The main emphasis is on the ultraluminous objects. Possible correlations with infrared luminosity are identified. These results are used to constrain the nature of the dominant energy source in luminous infrared galaxies, and to test whether these ...
openaire +2 more sources
Chemical abundances in the dwarf galaxy NGC 4163 based on the nebular and auroral emission lines
Astronomische Nachrichten, Volume 343, Issue 9-10, November-December 2022., 2022 Abstract We constructed an oxygen abundance map and N/O ratio map of the unusually low excitation dwarf irregular galaxy NGC 4163 based on publicly available spectroscopy obtained by the MaNGA survey. We detected auroral emission line [O II]λλ$$ \lambda \lambda $$7320,7330 which allows us to measure chemical abundance by direct Te$$ {\mathrm{T}}_e ...
I. A. Zinchenko, L. S. Pilyugin
wiley +1 more source
Evolution of the ISM in luminous infrared galaxies [PDF]
Astronomy and Astrophysics, 2010 Molecules that trace the high-density regions of the interstellar medium may be used to evaluate the changing physical and chemical environment during the ongoing nuclear activity in (Ultra-)Luminous Infrared Galaxies. The changing ratios of the HCN(1-0), HNC(1-0), HCO+(1-0), CN(1-0) and CN(2-1), and CS(3-2) transitions were compared with the HCN(1-0 ...
A. F. Loenen +2 more
openaire +5 more sources
The road toward imaging a black hole: A personal perspective
Natural Sciences, Volume 2, Issue 4, October 2022., 2022 The article describes the authors personal journey towards developig the Event Horizon Telescope and the first image of a black hole. Left: predcition made by the author and collaborators proposing the black hole imaging in 2000. Right: the two images observed and published by the Event Horizon Telescope in 2019 and 2022.
Heino Falcke
wiley +1 more source
Mid infrared properties of distant infrared luminous galaxies [PDF]
Astronomy & Astrophysics, 2006 15 pages, 9 figures, accepted for publication in A& ...
David Elbaz +5 more
openaire +3 more sources
GOALS-JWST: Unveiling Dusty Compact Sources in the Merging Galaxy IIZw096
The Astrophysical Journal Letters, 2022 We have used the Mid-InfraRed Instrument (MIRI) on the James Webb Space Telescope (JWST) to obtain the first spatially resolved, mid-infrared images of IIZw096, a merging luminous infrared galaxy (LIRG) at z = 0.036.
Hanae Inami +32 more
doaj +1 more source
Submillimetre surveys: The prospects for Herschel [PDF]
, 2009 Using the observed submillimetre source counts, from 250-1200 microns (including the most recent 250, 350 and 500 micron counts from BLAST), we present a model capable of reproducing these results, which is used as a basis to make predictions for ...
Balland +46 more
core +1 more source
Infrared polarimetry of galaxies. I - Infrared luminous galaxies
The Astrophysical Journal, 1989 Les observations polarimetriques a 1.2, 1.65 et 2.2 μm sont presentees pour les noyaux de 6 galaxies IR lumineuses: IRAS 05189-2524, UGC 5101, Mrk 231, Mrk 273, Arp 220 et NGC 6240. Les nombreux mecanismes et les geometries responsables de la production de la polarisation dans le proche IR sont discutes en ...
Terry J. Jones, Dimitri I. Klebe
openaire +2 more sources
Environmental dependence of local luminous infrared galaxies [PDF]
Astronomy & Astrophysics, 2010 14 pages, 17 figures. To appear in A&A. Paper with high resolution figures is available at http://astro.kias.re.kr/~hshwang/doc/ms_hwang_lirg ...
Changbom Park +6 more
openaire +4 more sources