Results 31 to 40 of about 72,131 (316)

Broad Emission Lines in Optical Spectra of Hot, Dust-obscured Galaxies Can Contribute Significantly to JWST/NIRCam Photometry

The Astrophysical Journal Letters, 2023
Selecting the first galaxies at z > 7 − 10 from JWST surveys is complicated by z < 6 contaminants with degenerate photometry. For example, strong optical nebular emission lines at z < 6 may mimic JWST/NIRCam photometry of z > 7–10 Lyman-break galaxies ...
Jed McKinney, Luke Finnerty, Caitlin M. Casey, Maximilien Franco, Arianna S. Long, Seiji Fujimoto, Jorge A. Zavala, Olivia Cooper, Hollis Akins, Alexandra Pope, Lee Armus, B. T. Soifer, Kirsten Larson, Keith Matthews, Jason Melbourne, Michael Cushing   +15 more
doaj   +1 more source

Decomposition of the central structure of NGC 2273 in the NIR: A case study

Astronomische Nachrichten, Volume 344, Issue 10, December 2023., 2023
Abstract The Seyfert 2 galaxy NGC 2273 is a prime target to explore how active nuclei can be fed. It has a star‐forming innermost nuclear ring with a radius of 0.33kpc from where material may be funneled to the supermassive black hole in its center. In this article, we discuss high‐resolution adaptive optics aided JHKs images of NGC 2273 taken with the
L. Schey, J. Heidt, A. Pramskiy, D. Thompson, G. Agapito, S. Esposito, R. Gredel, D. Miller, E. Pinna, A. Puglisi, F. Rossi, W. Seifert, G. Taylor, A. Quirrenbach   +13 more
wiley   +1 more source

AKARINEAR-INFRARED SPECTROSCOPY OF LUMINOUS INFRARED GALAXIES [PDF]

The Astrophysical Journal, 2012
We present the AKARI near-infrared (NIR; 2.5-5 micron) spectroscopic study of 36 (ultra)luminous infrared galaxies [(U)LIRGs] at z=0.01-0.4. We measure the NIR spectral features including the strengths of 3.3 micron polycyclic aromatic hydrocarbon (PAH) emission and hydrogen recombination lines (Br .
Lee, Jong Chul, Hwang, Ho Seong, Lee, Myung Gyoon, Kim, Minjin, Lee, Joon Hyeop   +4 more
openaire   +2 more sources

Ultra wide‐field infrared astronomy in Antarctica

Astronomische Nachrichten, Volume 344, Issue 8-9, October-November 2023., 2023
The science enabled by the deep and high‐cadence survey that will be performed by the Vera Rubin Observatory has led to an increase of survey and follow‐up capabilities around the world. The infrared, has however, not match this growth due to the challenges caused by the atmospheric and the cost of large detector arrays.
Tony Travouillon, Roger M. Smith, Jason Fucik, Don F. Figer, Mansi Kasliwal, Anna M. Moore, Tristan Guillot   +6 more
wiley   +1 more source

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

Missing Giants: Predictions on Dust-obscured Galaxy Stellar Mass Assembly Throughout Cosmic Time

The Astrophysical Journal, 2023
Due to their extremely dust-obscured nature, much uncertainty still exists surrounding the stellar mass growth and content in dusty, star-forming galaxies (DSFGs) at z > 1. In this work, we present a numerical model built using empirical data on DSFGs to
Arianna S. Long, Caitlin M. Casey, Claudia del P. Lagos, Erini L. Lambrides, Jorge A. Zavala, Jaclyn Champagne, Olivia R. Cooper, Asantha R. Cooray   +7 more
doaj   +1 more source

A Herschel Space Observatory Spectral Line Survey of Local Luminous Infrared Galaxies from 194 to 671 Microns [PDF]

, 2017
We describe a Herschel Space Observatory 194–671 μm spectroscopic survey of a sample of 121 local luminous infrared galaxies and report the fluxes of the CO J to J–1 rotational transitions for , the [N ii] 205 μm line, the [C i] lines at 609 and 370 μm ...
N. Lu, N. Lu, Yinghe Zhao, T. Díaz-Santos, C. Xu, C. Xu, Yu Gao, L. Armus, K. Isaak, J. Mazzarella, P. V. D. Werf, P. Appleton, V. Charmandaris, A. Evans, A. Evans, J. Howell, K. Iwasawa, J. Leech, S. Lord, A. Petric, G. Privon, G. Privon, D. Sanders, B. Schulz, J. Surace   +24 more
semanticscholar   +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

Neutral Carbon Emission in Luminous Infrared Galaxies: The [C i] Lines as Total Molecular Gas Tracers [PDF]

, 2017
We present a statistical study of the [C i] (3P1 3P0), [C i] (3P2 3P1) lines (hereafter [C i] (1–0) and [C i] (2–1), respectively) and the CO(1–0) line for a sample of (ultra-)luminous infrared galaxies ((U)LIRGs). We explore the correlations between the
Qian Jiao, Y. Zhao 赵, M. Zhu, N. Lu, Y. Gao 高, Zhi-Yu Zhang   +5 more
semanticscholar   +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 Jay Jones, Dimitri Klebe
openaire   +1 more source