Results 31 to 40 of about 36,111 (268)
A brief history of image sensors in the optical
Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023 Image sensors, most notably the Charge Coupled Device (CCD), have revolutionized observational astronomy as perhaps the most important innovation after photography. Since the 50th anniversary of the invention of the CCD has passed in 2019, it is time to review the development of detectors for the visible wavelength range, starting with the discovery of
Martin M. Roth
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
The star formation history of luminous infrared galaxies [PDF]
Astronomy & Astrophysics, 2006 We constrain the past star formation histories of a sample of 25 distant (z~0.7) luminous infrared galaxies (LIRGs) detected with the mid infrared cameras ISOCAM and MIPS onboard the ISO and Spitzer satellites. We use high resolution VLT-FORS2 spectroscopy in addition to a comprehensive library of 200,000 model optical spectra to derive Bayesian ...
Yanchun Liang +8 more
openaire +6 more sources
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
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Advanced Intelligent Systems, Volume 5, Issue 6, June 2023., 2023 This review discusses the design and application of current smartphone‐based diagnostic devices and highlights challenges associated with existent methods and perspectives on how to deal with those challenges from engineering aspects on the constant color signal acquisition, including smartphone adapter design, color space transformation, machine ...
Kexin Fan +4 more
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
The hyperluminous X‐ray source population
Astronomische Nachrichten, Volume 344, Issue 4, May 2023., 2023 Abstract We have recently published a catalog of 1843 candidate ultraluminous X‐ray sources (ULXs). This is the largest catalog of ULXs to date and was built by cross‐correlating recent serendipitous source catalogs from the XMM‐Newton, Swift, and Chandra observatories with a large sample of galaxies, primarily from HyperLEDA.
A. D. A. MacKenzie +2 more
wiley +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
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