Catálogo de publicaciones - revistas
Título de Acceso Abierto
The Astrophysical Journal (ApJ)
Resumen/Descripción – provisto por la editorial en inglés
The Astrophysical Journal is an open access journal devoted to recent developments, discoveries, and theories in astronomy and astrophysics. Publications in ApJ constitute significant new research that is directly relevant to astrophysical applications, whether based on observational results or on theoretical insights or modeling.Palabras clave – provistas por la editorial
astronomy; astrophysics
Disponibilidad
| Institución detectada | Período | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No detectada | desde jul. 1995 / hasta dic. 2023 | IOPScience |
Información
Tipo de recurso:
revistas
ISSN impreso
0004-637X
ISSN electrónico
1538-4357
Editor responsable
American Astronomical Society (AAS)
Idiomas de la publicación
- inglés
País de edición
Reino Unido
Información sobre licencias CC
Cobertura temática
Tabla de contenidos
The Lightweaver Framework for Nonlocal Thermal Equilibrium Radiative Transfer in Python
Christopher M. J. Osborne
; Ivan Milić
<jats:title>Abstract</jats:title> <jats:p>Tools for computing detailed optically thick spectral line profiles out of local thermodynamic equilibrium have always been focused on speed, due to the large computational effort involved. With the <jats:italic>Lightweaver</jats:italic> framework, we have produced a more flexible, modular toolkit for building custom tools in a high-level language, Python, without sacrificing speed against the current state of the art. The goal of providing a more flexible method for constructing these complex simulations is to decrease the barrier to entry and allow more rapid exploration of the field. In this paper we present an overview of the theory of optically thick nonlocal thermodynamic equilibrium radiative transfer, the numerical methods implemented in <jats:italic>Lightweaver</jats:italic> including the problems of time-dependent populations and charge-conservation, as well as an overview of the components most users will interact with, to demonstrate their flexibility.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 14
Observations and Analysis of CH+ Vibrational Emissions from the Young, Carbon-rich Planetary Nebula NGC 7027: A Textbook Example of Chemical Pumping
David A. Neufeld; Benjamin Godard; P. Bryan Changala; Alexandre Faure; T. R. Geballe; Rolf Güsten; Karl M. Menten; Helmut Wiesemeyer
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 15
Anomalous Intensities in the Infrared Emission of CH+ Explained by Quantum Nuclear Motion and Electric Dipole Calculations
P. Bryan Changala; David A. Neufeld; Benjamin Godard
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 16
A Search for Wandering Black Holes in the Milky Way with Gaia and DECaLS
Jenny E. Greene; Lachlan Lancaster; Yuan-Sen Ting; Sergey E. Koposov; Shany Danieli; Song Huang; Fangzhou Jiang; Johnny P. Greco; Jay Strader
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 17
Threads, Ribbons, and Rings in the Radio Galaxy IC 4296
J. J. Condon; W. D. Cotton; S. V. White; S. Legodi; S. Goedhart; K. McAlpine; S. M. Ratcliffe; F. Camilo
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 18
A Self-similar Solution of Hot Accretion Flow: The Role of the Kinematic Viscosity Coefficient
Fatemeh Zahra Zeraatgari; Liquan Mei; Amin Mosallanezhad
<jats:title>Abstract</jats:title> <jats:p>We investigate the dependency of the inflow-wind structure of a hot accretion flow on the kinematic viscosity coefficient. In this regard, we propose a model for the kinematic viscosity coefficient to mimic the behavior of the magnetorotational instability that would be maximal at the rotation axis. Then, we compare our model with two other prescriptions from numerical simulations of the accretion flow. We solve two-dimensional hydrodynamic equations of hot accretion flows in the presence of thermal conduction. The self-similar approach is also adopted in the radial direction. We calculate the properties of the inflow and the wind such as velocity, density, and angular momentum for three models of the kinematic viscosity prescription. On inspection, we find that in our suggested model the wind is less efficient at extracting the angular momentum outward where the self-similar solutions are applied than it is in two other models. The solutions obtained in this paper might be applicable to hydrodynamical numerical simulations of hot accretion flows.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 19
Evidence Suggesting That ‘Oumuamua Is the ∼30 Myr Old Product of a Molecular Cloud
Cheng-Han Hsieh; Gregory Laughlin; Héctor G. Arce
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 20
Evidence for Radial Expansion at the Core of the Orion Complex with Gaia EDR3
Cameren Swiggum; Elena D’Onghia; João Alves; Josefa Großschedl; Michael Foley; Catherine Zucker; Stefan Meingast; Boquan Chen; Alyssa Goodman
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 21
Confirmation of a Second Propeller: A High-inclination Twin of AE Aquarii
Peter Garnavich; Colin Littlefield; R. M. Wagner; Jan van Roestel; Amruta D. Jaodand; Paula Szkody; John R. Thorstensen
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 22
Stars with Photometrically Young Gaia Luminosities Around the Solar System (SPYGLASS). I. Mapping Young Stellar Structures and Their Star Formation Histories
Ronan M. P. Kerr; Aaron C. Rizzuto; Adam L. Kraus; Stella S. R. Offner
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 23