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
A Flaring AGN in a ULIRG Candidate in Stripe 82
Abhishek Prakash
; Ranga Ram Chary
; George Helou
; Andreas Faisst
; Matthew J. Graham
; Frank J. Masci
; David L. Shupe; Bomee Lee
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 154
Toward a Model-independent Measurement of the Halo Mass Function with Observables
Fuyu Dong; Jun Zhang; Xiaohu Yang
; Jiajun Zhang
; Wentao Luo
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 155
Nobeyama 45 m Cygnus-X CO Survey. II. Physical Properties of C18O Clumps
Tatsuya Takekoshi
; Shinji Fujita
; Atsushi Nishimura
; Kotomi Taniguchi
; Mitsuyoshi Yamagishi
; Mitsuhiro Matsuo; Satoshi Ohashi; Kazuki Tokuda
; Tetsuhiro Minamidani
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 156
Spectrophotometric Redshifts for z ∼ 1 Galaxies and Predictions for Number Densities with WFIRST and Euclid
Bhavin A. Joshi
; Seth Cohen
; Rogier A. Windhorst
; Rolf Jansen
; Norbert Pirzkal; Nimish P. Hathi
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 157
The Structure of Dark Molecular Gas in the Galaxy. II. Physical State of “CO-dark” Gas in the Perseus Arm
Michael P. Busch
; Ronald J. Allen; Philip D. Engelke; David E. Hogg; David A. Neufeld
; Mark G. Wolfire
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 158
Relativistic Astronomy. III. Test of Special Relativity via Doppler Effect
Yuan-Pei Yang
; Jin-Ping Zhu
; Bing Zhang
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 159
Turbulence Driven by Stellar Jets, the Possibility and the Efficiency
Somayeh Sheikhnezami
; Mohsen Abgharian-Afoushteh
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 160
Vector Resonant Relaxation of Stars around a Massive Black Hole
Jean-Baptiste Fouvry; Ben Bar-Or
; Pierre-Henri Chavanis
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 161
KFPA Examinations of Young STellar Object Natal Environments (KEYSTONE): Hierarchical Ammonia Structures in Galactic Giant Molecular Clouds
Jared Keown
; James Di Francesco
; Erik Rosolowsky
; Ayushi Singh
; Charles Figura; Helen Kirk
; L. D. Anderson
; Michael Chun-Yuan Chen
; Davide Elia
; Rachel Friesen
; Adam Ginsburg
; A. Marston; Stefano Pezzuto
; Eugenio Schisano; Sylvain Bontemps; Paola Caselli
; Hong-Li Liu
; Steven Longmore
; Frédérique Motte; Philip C. Myers
; Stella S. R. Offner
; Patricio Sanhueza
; Nicola Schneider
; Ian Stephens
; James Urquhart
<jats:title>Abstract</jats:title> <jats:p>We present initial results from the <jats:italic>K</jats:italic>-band Focal Plane Array Examinations of Young STellar Object Natal Environments survey, a large project on the 100 m Green Bank Telescope mapping ammonia emission across 11 giant molecular clouds at distances of 0.9–3.0 kpc (Cygnus X North, Cygnus X South, M16, M17, Mon R1, Mon R2, NGC 2264, NGC 7538, <jats:italic>Rosette</jats:italic>, W3, and W48). This data release includes the NH<jats:sub>3</jats:sub> (1,1) and (2,2) maps for each cloud, which are modeled to produce maps of kinetic temperature, centroid velocity, velocity dispersion, and ammonia column density. Median cloud kinetic temperatures range from 11.4 ± 2.2 K in the coldest cloud (Mon R1) to 23.0 ± 6.5 K in the warmest cloud (M17). Using dendrograms on the NH<jats:sub>3</jats:sub> (1,1) integrated intensity maps, we identify 856 dense gas clumps across the 11 clouds. Depending on the cloud observed, 40%–100% of the clumps are aligned spatially with filaments identified in H<jats:sub>2</jats:sub> column density maps derived from spectral energy distribution fitting of dust continuum emission. A virial analysis reveals that 523 of the 835 clumps (∼63%) with mass estimates are bound by gravity alone. We find no significant difference between the virial parameter distributions for clumps aligned with the dust-continuum filaments and those unaligned with filaments. In some clouds, however, hubs or ridges of dense gas with unusually high mass and low virial parameters are located within a single filament or at the intersection of multiple filaments. These hubs and ridges tend to host water maser emission, multiple 70 <jats:italic>μ</jats:italic>m detected protostars, and have masses and radii above an empirical threshold for forming massive stars.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 4
An X-Ray + Radio Search for Massive Black Holes in Blue Compact Dwarf Galaxies
Lilikoi J. Latimer; Amy E. Reines
; Richard M. Plotkin; Thomas D. Russell
; James J. Condon
<jats:title>Abstract</jats:title> <jats:p>Nearby blue compact dwarf (BCD) galaxies are arguably our best local analogs of galaxies in the earlier universe that may host relics of black hole (BH) seeds. Here we present high-resolution <jats:italic>Chandra X-ray Observatory</jats:italic> and Karl G. Jansky Very Large Array observations of five nearby BCDs with stellar masses of less than the Small Magellanic Cloud (<jats:italic>M</jats:italic> <jats:sub>⋆</jats:sub> ∼ 10<jats:sup>7</jats:sup>–10<jats:sup>8.4</jats:sup> <jats:italic>M</jats:italic> <jats:sub>⊙</jats:sub>). We search for signatures of accreting massive BHs at X-ray and radio wavelengths, which are more sensitive to lower BH accretion rates than optical searches. We detect a total of 10 hard X-ray sources and 10 compact radio sources at luminosities consistent with star-formation-related emission. We find one case of a spatially coincident X-ray and radio source within the astrometric uncertainties. If the X-ray and radio emission are indeed coming from the same source, the origin of the radiation is plausibly from an active massive BH with log (<jats:italic>M</jats:italic> <jats:sub>BH</jats:sub>/<jats:italic>M</jats:italic> <jats:sub>⊙</jats:sub>) ∼ 4.8 ± 1.1. However, given that the X-ray and radio emission are also coincident with a young star cluster complex, we consider the combination of an X-ray binary and a supernova remnant (or H <jats:sc>ii</jats:sc> region) a viable alternative explanation. Overall, we do not find compelling evidence for active massive BHs in our target BCDs, which on average have stellar masses more than an order of magnitude lower than previous samples of dwarf galaxies found to host massive BHs. Our results suggest that moderately accreting massive BHs in BCDs are not so common as to permit unambiguous detection in a small sample.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 78