Results 31 to 40 of about 35,402 (267)

Core-collapse supernova subtypes in luminous infrared galaxies [PDF]

Astronomy & Astrophysics, 2021
The fraction of core-collapse supernovae (CCSNe) occurring in the central regions of galaxies is not well constrained at present. This is partly because large-scale transient surveys operate at optical wavelengths, making it challenging to detect transient sources that occur in regions susceptible to high extinction factors.
A. Reguitti, A. Reguitti, A. Reguitti, P. Ochner, P. Ochner, Stuart D. Ryder, Marco Berton, Marco Berton, Cosimo Inserra, S. Moran, S. Parker, Mariusz Gromadzki, R. Ramphul, Erkki Kankare, Andreas Efstathiou, Seppo Mattila, Lluís Galbany, Miguel A. Pérez-Torres, Miguel A. Pérez-Torres, Matt Nicholl, Matt Nicholl, Paolo A. Mazzali, Paolo A. Mazzali, A. Pastorello, Petri Vaisanen, Tuomas Kangas, Massimo Turatto, Enrico Cappellaro, Kate Maguire, Rubina Kotak, Hanindyo Kuncarayakti, T. E. Müller-Bravo, Tao Chen, Morgan Fraser, Zara Randriamanakoto, Erik C. Kool, L. Tomasella, D. O'Neill, Jari Kotilainen, T. M. Reynolds, David Young, Régis Cartier, M. Mogotsi, C. Romero-Cañizales   +43 more
openaire   +8 more sources

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

Energetic nuclear transients in luminous and ultraluminous infrared galaxies [PDF]

Astronomy & Astrophysics, 2022
Energetic nuclear outbursts have been discovered in luminous and ultraluminous infrared galaxies (U/LIRGs) at unexpectedly high rates. To investigate this population of transients, we performed a search in mid-IR data from the Wide-field Infrared Survey Explorer (WISE) satellite and its NEOWISE survey to detect and characterise luminous and smoothly ...
Reynolds, T. M., Mattila, S., Efstathiou, A., Kankare, E., Kool, E., Ryder, S., Pena-Monino, L., Perez-Torres, M. A.   +7 more
openaire   +4 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

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   +6 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, Jason Surace, Lee Armus, Aaron S. Evans, Kirsten L. Larson, Loreto Barcos-Munoz, Sabrina Stierwalt, Joseph M. Mazzarella, George C. Privon, Yiqing Song, Sean T. Linden, Christopher C. Hayward, Torsten Böker, Vivian U, Thomas Bohn, Vassilis Charmandaris, Tanio Diaz-Santos, Justin H. Howell, Thomas Lai, Anne M. Medling, Jeffrey A. Rich, Susanne Aalto, Philip Appleton, Michael J. I. Brown, Shunshi Hoshioka, Kazushi Iwasawa, Francisca Kemper, David Law, Matthew A. Malkan, Jason Marshall, Eric J. Murphy, David Sanders, Paul van der Werf   +32 more
doaj   +1 more source

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

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

Fading AGNs in Poststarburst Galaxies

The Astrophysical Journal, 2023
The role of active galactic nuclei (AGNs) in quenching galaxies and driving the evolution from star forming to quiescence remains a key question in galaxy evolution.
K. Decker French, Nicholas Earl, Annemarie B. Novack, Bhavya Pardasani, Vismaya R. Pillai, Akshat Tripathi, Margaret E. Verrico   +6 more
doaj   +1 more source