Results 41 to 50 of about 200,741 (275)

MID-INFRARED SPECTRAL DIAGNOSTICS OF LUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2011
accepted for publication in ApJ, 34 pages, 12 ...
Petric, A. O., Armus, L., Howell, J., Chan, B., Mazzarella, J. M., Evans, A. S., Surace, J. A., Sanders, D., Appleton, P., Charmandaris, V., Santos, T. Diaz, Frayer, D., Lord, S., Haan, S., Inami, H., Iwasawa, K., Kim, D., Madore, B., Marshall, J., Spoon, H., Stierwalt, S., Sturm, E., U, V., Vavilkin, T., Veilleux, S.   +24 more
openaire   +6 more sources

A new multi‐messenger description of starburst galaxies emission: perspectives for neutrino and gamma‐ray observations

Astronomische Nachrichten, Volume 344, Issue 1-2, January-February 2023., 2023
Abstract Star‐forming and starburst galaxies (SBGs), which are well‐known cosmic‐ray (CR) reservoirs, are expected to emit gamma rays and neutrinos predominantly via hadronic collisions. In this work we analyze the 10‐year Fermi‐Low Energy Technique (LAT) spectral energy distributions of 13 nearby galaxies by means of a physical model that accounts for
Antonio Marinelli, Antonio Ambrosone, Marco Chianese, Damiano Fiorillo, Gennaro Miele, Ofelia Pisanti   +5 more
wiley   +1 more source

The Dragonfly Galaxy. III. Jet Brightening of a High-redshift Radio Source Caught in a Violent Merger of Disk Galaxies

The Astrophysical Journal, 2023
The Dragonfly galaxy (MRC 0152-209), the most infrared-luminous radio galaxy at redshift z ∼ 2, is a merger system containing a powerful radio source and large displacements of gas.
Sophie Lebowitz, Bjorn Emonts, Donald M. Terndrup, Joseph N. Burchett, J. Xavier Prochaska, Guillaume Drouart, Montserrat Villar-Martín, Matthew Lehnert, Carlos De Breuck, Joël Vernet, Katherine Alatalo   +10 more
doaj   +1 more source

The Phanerozoic climate

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, Henrik Svensmark, Ján Veizer   +2 more
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, Willem A. Baan, Marco Spaans   +2 more
openaire   +5 more sources

GOALS-JWST: Hidden Star Formation and Extended PAH Emission in the Luminous Infrared Galaxy VV 114

The Astrophysical Journal Letters, 2022
James Webb Space Telescope (JWST) Mid-Infrared Instrument (MIRI) images of the luminous infrared (IR) galaxy VV 114 are presented. This redshift ∼0.020 merger has a western component (VV 114W) rich in optical star clusters and an eastern component (VV ...
A. S. Evans, D. T. Frayer, Vassilis Charmandaris, Lee Armus, Hanae Inami, Jason Surace, Sean Linden, B. T. Soifer, Tanio Diaz-Santos, Kirsten L. Larson, Jeffrey A. Rich, Yiqing Song, Loreto Barcos-Munoz, Joseph M. Mazzarella, George C. Privon, Vivian U, Anne M. Medling, Torsten Böker, Susanne Aalto, Kazushi Iwasawa, Justin H. Howell, Paul van der Werf, Philip Appleton, Thomas Bohn, Michael J. I. Brown, Christopher C. Hayward, Shunshi Hoshioka, Francisca Kemper, Thomas Lai, David Law, Matthew A. Malkan, Jason Marshall, Eric J. Murphy, David Sanders, Sabrina Stierwalt   +34 more
doaj   +1 more source

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

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, Stephane Charlot, Francois Hammer, Hector Flores, Anna Pasquali, David Elbaz, Catherine Cesarsky, D. Marcillac, D. Marcillac   +8 more
openaire   +7 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