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
Excitation of Planetary Obliquities through Planet–Disk Interactions
Sarah Millholland
; Konstantin Batygin
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 119
Analysis of Meteoroid Ablation Based on Plasma Wind-tunnel Experiments, Surface Characterization, and Numerical Simulations
Bernd Helber; Bruno Dias; Federico Bariselli; Luiza F. Zavalan; Lidia Pittarello; Steven Goderis; Bastien Soens; Seann J. McKibbin; Philippe Claeys; Thierry E. Magin
<jats:title>Abstract</jats:title> <jats:p>Meteoroids largely disintegrate during their entry into the atmosphere, contributing significantly to the input of cosmic material to Earth. Yet, their atmospheric entry is not well understood. Experimental studies on meteoroid material degradation in high-enthalpy facilities are scarce and when the material is recovered after testing, it rarely provides sufficient quantitative data for the validation of simulation tools. In this work, we investigate the thermo-chemical degradation mechanism of a meteorite in a high-enthalpy ground facility able to reproduce atmospheric entry conditions. A testing methodology involving measurement techniques previously used for the characterization of thermal protection systems for spacecraft is adapted for the investigation of ablation of alkali basalt (employed here as meteorite analog) and ordinary chondrite samples. Both materials are exposed to a cold-wall stagnation point heat flux of 1.2 MW m<jats:sup>−2</jats:sup>. Numerous local pockets that formed on the surface of the samples by the emergence of gas bubbles reveal the frothing phenomenon characteristic of material degradation. Time-resolved optical emission spectroscopy data of ablated species allow us to identify the main radiating atoms and ions of potassium, calcium, magnesium, and iron. Surface temperature measurements provide maximum values of 2280 K for the basalt and 2360 K for the chondrite samples. We also develop a material response model by solving the heat conduction equation and accounting for evaporation and oxidation reaction processes in a 1D Cartesian domain. The simulation results are in good agreement with the data collected during the experiments, highlighting the importance of iron oxidation to the material degradation.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 120
Using Multiwavelength Variability to Explore the Connection among X-Ray Emission, the Far-ultraviolet H2 Bump, and Accretion in T Tauri Stars
C. C. Espaillat; C. Robinson; S. Grant; M. Reynolds
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 121
AGN Disks Harden the Mass Distribution of Stellar-mass Binary Black Hole Mergers
Y. Yang; I. Bartos; Z. Haiman; B. Kocsis; Z. Márka; N. C. Stone; S. Márka
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 122
Lyα Galaxies in the Epoch of Reionization (LAGER): Spectroscopic Confirmation of Two Redshift ∼7.0 Galaxies
Huan Yang; Leopoldo Infante; James E. Rhoads; Weida Hu; Zhenya Zheng; Sangeeta Malhotra; Junxian Wang; L. Felipe Barrientos; Wenyong Kang; Chunyan Jiang
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 123
HALO7D I. The Line-of-sight Velocities of Distant Main-sequence Stars in the Milky Way Halo
Emily C. Cunningham; Alis J. Deason; Constance M. Rockosi; Puragra Guhathakurta; Zachary G. Jennings; Evan N. Kirby; Elisa Toloba; Guillermo Barro
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 124
Revisiting the Instability Problem of the Interacting Dark Energy Model in the Parameterized Post-Friedmann Framework
Ji-Ping Dai; Jun-Qing Xia
<jats:title>Abstract</jats:title> <jats:p>Dark energy might interact with dark matter in a direct, non-gravitational way, which can help remedy several theoretical defects. In order to find out the properties of interacting dark energy (IDE) models, it is necessary to investigate the cosmological perturbations in detail. However, due to the improper use of pressure perturbation of dark energy, a large-scale instability at the early stage occurs occasionally. In recent years, parameterized post-Friedmann approach has been used to calculate the perturbation equations in the IDE scenario. Under this framework, the dark energy pressure perturbation was replaced by the relationship between the momentum density of dark energy and other components on a large scale. However, this paper shows that if the interaction terms are related to the velocity perturbation of dark energy, the density perturbation of dark matter, and the matter power spectrum will diverge when the equation of state parameter of dark energy <jats:italic>w</jats:italic> is close to −1. A simple parameterization steering clear of this problem is proposed in this paper, which is a more general form and can be applied to explore the interaction between dark matter and dark energy by using various cosmological data.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 125
On-sky Performance of the CLASS Q-band Telescope
John W. Appel; Zhilei Xu; Ivan L. Padilla; Kathleen Harrington; Bastián Pradenas Marquez; Aamir Ali; Charles L. Bennett; Michael K. Brewer; Ricardo Bustos; Manwei Chan; David T. Chuss; Joseph Cleary; Jullianna Couto; Sumit Dahal; Kevin Denis; Rolando Dünner; Joseph R. Eimer; Thomas Essinger-Hileman; Pedro Fluxa; Dominik Gothe; Gene C. Hilton; Johannes Hubmayr; Jeffrey Iuliano; John Karakla; Tobias A. Marriage; Nathan J. Miller; Carolina Núñez; Lucas Parker; Matthew Petroff; Carl D. Reintsema; Karwan Rostem; Robert W. Stevens; Deniz Augusto Nunes Valle; Bingjie Wang; Duncan J. Watts; Edward J. Wollack; Lingzhen Zeng
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 126
Complex Rotational Modulation of Rapidly Rotating M Stars Observed with TESS
Z. Zhan; M. N. Günther; S. Rappaport; K. Oláh; A. Mann; A. M. Levine; J. Winn; F. Dai; G. Zhou; Chelsea X. Huang; L. G. Bouma; M. J. Ireland; G. Ricker; R. Vanderspek; D. Latham; S. Seager; J. Jenkins; D. A. Caldwell; J. P. Doty; Z. Essack; G. Furesz; M. E. R. Leidos; P. Rowden; J. C. Smith; K. G. Stassun; M. Vezie
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 127
Radioactive Heating and Late Time Kilonova Light Curves
Daniel Kasen; Jennifer Barnes
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 128