Catálogo de publicaciones - revistas

Compartir en
redes sociales

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

https://creativecommons.org/licenses/by/4.0/

Cobertura temática

Ciencias físicas

Tabla de contenidos

doi: 10.3847/1538-4357/ac1c6f

Electron Density Dependence of Extreme Ultraviolet Line Intensity Ratios in Ar XIV

Nobuyuki Nakamura; Naoki Numadate; Yasutaka Kono; Izumi Murakami; Daiji Kato; Hiroyuki A. Sakaue; Hirohisa Hara

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 115

doi: 10.3847/1538-4357/ac1ba6

The Influence of Heavy Cosmic Rays in Energy Deposition in Molecular Clouds Employing the GEANT4 Code and Voyager I Data

Sergio Pilling; Maurício Tizziani Pazianotto; Lucas Alves de Souza

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 116

doi: 10.3847/1538-4357/ac1585

Long-term Spectroscopic Survey of the Pleiades Cluster: The Binary Population

Guillermo Torres; David W. Latham; Samuel N. Quinn

<jats:title>Abstract</jats:title> <jats:p>We present the results of a spectroscopic monitoring program of the Pleiades region aimed at completing the census of spectroscopic binaries in the cluster, extending it to longer periods than previously reachable. We gathered 6104 spectra of 377 stars between 1981 and 2021, and merged our radial velocities with 1151 measurements from an independent survey by others started three years earlier. With the combined data spanning more than 43 yr, we have determined orbits for some 30 new binary and multiple systems, more than doubling the number previously known in the Pleiades. The longest period is 36.5 yr. A dozen additional objects display long-term trends in their velocities, implying even longer periods. We examine the collection of orbital elements for cluster members, and find that the shape of the incompleteness-corrected distribution of periods (up to 10<jats:sup>4</jats:sup> days) is similar to that of solar-type binaries in the field, while that of the eccentricities is different. The mass-ratio distribution is consistent with being flat. The binary frequency in the Pleiades for periods up to 10<jats:sup>4</jats:sup> days is 25% ± 3% after corrections for undetected binaries, which is nearly double that of the field up to the same period. The total binary frequency including known astrometric binaries is at least 57%. We estimate the internal radial velocity dispersion in the cluster to be 0.48 ± 0.04 km s<jats:sup>−1</jats:sup>. We revisit the determination of the tidal circularization period, and confirm its value to be 7.2 ± 1.0 days, with an improved precision compared to an earlier estimate.</jats:p>

Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.

Pp. 117

doi: 10.3847/1538-4357/ac14be