Results 111 to 120 of about 210,358 (255)

Optical Emission Lines from Warm Interstellar Clouds: A Decisive Test of the Decaying Neutrino Theory [PDF]

The Astrophysical Journal, 1998
11 pages, Latex, aasms4.sty macro ...
openaire   +2 more sources

Forecasting SEP Atmospheric and Space Radiation by Coupling UMASEP and NAIRAS Models

Space Weather, Volume 24, Issue 1, January 2026.
Abstract The Nowcast of Aerospace Ionizing RAdiation System (NAIRAS) model predicts the radiation environment from the Earth's surface to free‐space. The model output provides dosimetric and particle flux quantities required to assess the hazardous radiation impacts to human health and adverse effects on vehicle electronic systems.
Christopher J. Mertens, Guillaume P. Gronoff, Daniel B. Phoenix, Marlon Núñez, Yihua Zheng   +4 more
wiley   +1 more source

A Catalog of Hα Emission-line Stars and 785 Newly Identified Young Stellar Object Candidates from LAMOST Based on a Deep Learning Method

The Astrophysical Journal Supplement Series
The H α emission line commonly appears in the spectra of many stars and serves as a key indicator for tracing ionized interstellar gas, investigating stellar activity, and studying gas dynamics.
Lei Tan, Ying Mei, Jiale Qian, Xiaolong Wang, Yue Cui, Aixin Huang, Feng Wang, Hui Deng, Chao Liu, Huanbin Chi   +9 more
doaj   +1 more source

Modeling Molecular-Line Emission from Circumstellar Disks

, 1997
Molecular lines hold valuable information on the physical and chemical composition of disks around young stars, the likely progenitors of planetary systems.
ACA Boogert, ACA Boogert, AJ Markwick, C Ceccarelli, CP Dullemond, CP Dullemond, CP Dullemond, CP Dullemond, D Lynden-Bell, E Bergin, EF Dishoeck van, EI Chiang, G-J Zadelhoff van, GB Rybicki, J Muzerolle, JE Kessler, JE Pringle, K Willacy, MJ Richter, MR Hogerheijde, MR Hogerheijde, MR Hogerheijde, NI Shakura, P D’Alessio, Q C, S Guilloteau, SJ Kenyon, SVW Beckwith, WF Thi, Y Aikawa, Y Aikawa, Y Aikawa, Y Aikawa, Y Aikawa, Y Aikawa, Y Aikawa   +35 more
core   +2 more sources

Satellites and Small Bodies With ALMA: Insights Into Solar System Formation and Evolution

AGU Advances, Volume 6, Issue 6, December 2025.
Abstract Our understanding of the formation and evolution of planetary systems has made major advances in the past decade. This progress has been driven in large part by the Atacama Large Millimeter/submillimeter Array (ALMA), which has given us an unprecedented view of solar system bodies themselves, and of the structure and chemistry of forming ...
Katherine de Kleer, Michael E. Brown, Martin Cordiner, Richard Teague   +3 more
wiley   +1 more source

Dynamic Test Particle Simulations of X‐Ray Emissions at Dayside Magnetopause Under Time‐Varying Solar Wind Conditions

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract The Latmos Test Particle (LaTeP) model is a steady‐state test particle code to investigate the solar wind charge exchange soft X‐ray emissions of the steady‐state Earth magnetosphere. In this study, we present the development of a new dynamic version (D‐LaTeP) extending the LaTeP model to adapt to time‐varying solar wind conditions.
Qiuyu Xu, Dimitra Koutroumpa, Ronan Modolo, Binbin Tang   +3 more
wiley   +1 more source

Gamma ray lines from interstellar grains [PDF]

The existence of very narrow (FWHM or approximately = 5 KeV) gamma ray line emission from interstellar grains is pointed out. The prime candidate for detection is the line at 6.129 Mev from O-16, but other very narrow lines could also be detected at 0 ...
Lingenfelter, R. E., Ramaty, R.
core   +1 more source

Integral-field near-infrared spectroscopy of two blue dwarf galaxies: NGC 5253 and He 2-10

, 2010
We present integral field spectroscopy in the near infrared (NIR) of He 2-10 and NGC 5253, two well known nearby dwarf irregular galaxies showing high star-formation rates.
Abuter, Alonso-Herrero, Alonso-Herrero, Beck, Black, Bonnet, Cabanac, Calzetti, Colina, Cresci, Cresci, Cresci, Davies, de Grijs, de Grijs, Dekel, Doyon, Eisenhauer, Elmegreen, Elmegreen, Epinat, Forster Schreiber, Fujita, G. Cresci, G. Santangelo, Genzel, Genzel, Gibson, Hanson, Henry, Hummer, Johansson, Johnson, Johnson, Kobulnicky, Kobulnicky, L. Vanzi, Law, Leitherer, M. Sauvage, Mannucci, Martin, Moorwood, Mouri, Oliva, P. van der Werf, Puxley, Rieke, Rieke, Rudnick, Santangelo, Sauvage, Schaerer, Sternberg, Swinbank, Turner, Turner, van der Werf, Vanzi, Vanzi, Vanzi, Vanzi, Vanzi   +62 more
core   +1 more source

Unveiling Fiber Networks and Core Formation in the DR21 South Filament

The Astronomical Journal
We present high-resolution (∼1000 au) 3 mm observations with the NOrthern Extended Millimeter Array toward the DR21 South Filament (DR21SF), aiming to reveal its internal fragmentation and search for deeply embedded star-forming activities.
Kai Yang, Keping Qiu, Xing Pan
doaj   +1 more source

X-ray Line Emission from Supernova Ejecta Fragments

, 2002
We show that fast moving isolated fragments of a supernova ejecta composed of heavy elements should be sources of K_alpha X-ray line emission of the SN nuclear-processed products.
A. M. Bykov, Aschenbach, Bell, Berezhko, Blandford, Bleeker, Blitz, Blondin, Bocchino, Borkowski, Bykov, Bykov, Chevalier, Chevalier, Chevalier, Chevalier, Decourchelle, Dogiel, Dorfi, Duffy, Fesen, Garcia, Hollenbach, Hughes, Hwang, Jakobs, Jones, Jones, Kaastra, Koyama, Laming, Levinson, Liu, Martin-Pintado, McCray, Miyata, Morisson, Murakami, Murakami, Park, Porquet, Powell, Raymond, Raymond, Scofield, Scofield, Shimada, Shull, Sunyaev, Sunyaev, Sutherland, Tanaka, Tanaka, Thielemann, Valinia, Vink, Wang, Willingale, Winkler, Woosley   +59 more
core   +1 more source