Results 21 to 30 of about 37,349 (272)

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

WARM MOLECULAR GAS IN LUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2014
We present our initial results on the CO rotational spectral line energy distribution (SLED) of the $J$ to $J$$-$1 transitions from $J=4$ up to $13$ from Herschel SPIRE spectroscopic observations of 65 luminous infrared galaxies (LIRGs) in the Great Observatories All-Sky LIRG Survey (GOALS).
Joseph M. Mazzarella, Yu Gao, Tanio Díaz-Santos, S. D. Lord, David B. Sanders, Lee Armus, P. van der Werf, Bernhard Schulz, Kazushi Iwasawa, Vassilis Charmandaris, Andreea Petric, Yinghe Zhao, Yinghe Zhao, Jason Surace, Hanae Inami, Jamie Leech, C. K. Xu, Nanyao Lu, Kate Gudrun Isaak, Justin Howell, Aaron S. Evans, Aaron S. Evans, P. N. Appleton   +22 more
openaire   +6 more sources

The Galaxy–Halo Connection of DESI Luminous Red Galaxies with Subhalo Abundance Matching

The Astrophysical Journal, 2023
We use subhalo abundance and age distribution matching to create magnitude-limited mock galaxy catalogs at z ∼ 0.43, 0.52, and 0.63 with z -band and 3.4 μ m W 1-band absolute magnitudes and r − z and r − W 1 colors. From these magnitude-limited mocks, we
Angela M. Berti, Kyle S. Dawson, Wilber Dominguez   +2 more
doaj   +1 more source

Engineering Strategies for Advancing Optical Signal Outputs in Smartphone‐Enabled Point‐of‐Care Diagnostics

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, Weiran Liu, Yuchen Miao, Zhen Li, Guozhen Liu   +4 more
wiley   +1 more source

Morphological classification of local luminous infrared galaxies [PDF]

Astronomy & Astrophysics, 2016
We present an analysis of the morphological classification of 89 luminous infrared galaxies (LIRGs) from the Great Observatories All-sky LIRG Survey (GOALS) sample using non-parametric coefficients and compare their morphology as a function of wavelength. We rely on images obtained in the optical (B- and I-band) as well as in the infrared (H-band and 5.
A. Psychogyios, E. Le Floc'h, Tanio Díaz-Santos, Sara Petty, Vassilis Charmandaris, Lee Armus, S. Haan, Justin Howell, Aaron S. Evans, Aaron S. Evans   +9 more
openaire   +8 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, T. P. Roberts, D. J. Walton   +2 more
wiley   +1 more source

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

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

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 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