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
Nonthermal Velocity in the Transition Region of Active Regions and Its Center-to-limb Variation
Avyarthana Ghosh
; Durgesh Tripathi; James A. Klimchuk
<jats:title>Abstract</jats:title> <jats:p>We derive the nonthermal velocities (NTVs) in the transition region of an active region using the Si <jats:sc>iv</jats:sc> 1393.78 Å line observed by the Interface Region Imaging Spectrograph and compare them with the line-of-sight photospheric magnetic fields obtained by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. The active region consists of two strong field regions with opposite polarity, separated by a weak field corridor that widened as the active region evolved. The means of the NTV distributions in strong field regions (weak field corridors) range between ∼18–20 (16–18) km s<jats:sup>−1</jats:sup>, albeit the NTV maps show a much larger range. In addition, we identify a narrow lane in the middle of the corridor with significantly reduced NTV. The NTVs do not show a strong center-to-limb variation, albeit they show somewhat larger values near the disk center. The NTVs are well correlated with redshifts as well as line intensities. The results obtained here and those presented in our companion paper on Doppler shifts suggest two populations of plasma in the active region emitting in Si <jats:sc>iv</jats:sc>. The first population exists in the strong field regions and extends partway into the weak field corridor between them. We attribute this plasma to spicules heated to ∼0.1 MK (often called type II spicules). They have a range of inclinations relative to vertical. The second population exists in the center of the corridor, is relatively faint, and has smaller velocities, likely horizontal. These results provide further insights into the heating of the transition region.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 151
Erratum: Implications of the Environments of Radio-detected Active Galactic Nuclei in a Complex Protostructure at z ∼ 3.3 (2021, ApJ, 912, 60)
Lu Shen; Brian C. Lemaux; Lori M. Lubin; Olga Cucciati; Olivier Le Fèvre; Guilin Liu; Wenjuan Fang; Debora Pelliccia; Adam Tomczak; John McKean; Neal A. Miller; Christopher D. Fassnacht; Roy Gal; Denise Hung; Nimish Hathi; Sandro Bardelli; Daniela Vergani; Elena Zucca
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 152
Erratum: “Propagation Effects in Quiet Sun Observations at Meter Wavelengths” (2020, ApJ, 903, 126)
Rohit Sharma; Divya Oberoi
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 153
Erratum: “A Global Model for Circumgalactic and Cluster-core Precipitation” (2017, ApJ, 845, 80)
G. Mark Voit; Greg Meece; Yuan Li; Brian W. O’Shea; Greg L. Bryan; Megan Donahue
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 154
Erratum: “The Perseus ALMA Chemistry Survey (PEACHES). I. The Complex Organic Molecules in Perseus Embedded Protostars” (2021, ApJ, 910, 20)
Yao-Lun Yang; Nami Sakai; Yichen Zhang; Nadia M. Murillo; Ziwei E. Zhang; Aya E. Higuchi; Shaoshan Zeng; Ana López-Sepulcre; Satoshi Yamamoto; Bertrand Lefloch; Mathilde Bouvier; Cecilia Ceccarelli; Tomoya Hirota; Muneaki Imai; Yoko Oya; Takeshi Sakai; Yoshimasa Watanabe
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 155
The Intriguing Behavior of Ultraviolet Photodesorption and Color Temperature of Astrophysical CO Ice Analogs: A Possible Indication of Molecular Disorder
H. Carrascosa; G. M. Muñoz Caro; C. González-díaz; J. Suevos; Y.-J. Chen
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 1
PGC 38025: A Star-forming Lenticular Galaxy with an Off-nuclear Star-forming Core
Zhengyi Chen; Qiu-Sheng Gu; Rubén García-Benito; Zhi-Yu Zhang; Xue Ge; Mengyuan Xiao; Xiaoling Yu
<jats:title>Abstract</jats:title> <jats:p>Lenticular galaxies (S0s) were considered mainly as passive evolved spirals due to environmental effects for a long time; however, most S0s in the field cannot fit into this common scenario. In this work, we study one special case, Sloan Digital Sky Survey J120237.07+642235.3 (PGC 38025), a star-forming field S0 galaxy with an off-nuclear blue core. We present optical integral field spectroscopic observation with the 3.5 meter telescope at Calar Alto Observatory, and high-resolution millimeter observation with the NOrthern Extended Millimeter Array. We estimated the star formation rate (SFR = 0.446 <jats:italic>M</jats:italic> <jats:sub>⊙</jats:sub> yr<jats:sup>−1</jats:sup>) and gaseous metallicity (12 + log(O/H) = 8.42) for PGC 38025, which follows the star formation main sequence and stellar mass–metallicity relation. We found that the ionized gas and cold molecular gas in PGC 38025 show the same spatial distribution and kinematics, while rotating misaligned with stellar component. The off-nuclear blue core is locating at the same redshift as PGC 38025 and its optical spectrum suggest it is H <jats:sc>ii</jats:sc> region. We suggest that the star formation in PGC 38025 is triggered by a gas-rich minor merger, and the off-nuclear blue core might be a local star formation happened during the accretion/merger process.</jats:p>
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 1
A Search for the 3.5 keV Line from the Milky Way’s Dark Matter Halo with HaloSat
E. M. Silich; K. Jahoda; L. Angelini; P. Kaaret; A. Zajczyk; D. M. LaRocca; R. Ringuette; J. Richardson
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 2
The Orbit and Nature of the Semidetached Stellar Companion of the Sgr A* Supermassive Black Hole
Elia Leibowitz
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 2
The Low-redshift Lyman-continuum Survey: [S ii] Deficiency and the Leakage of Ionizing Radiation
Bingjie Wang; Timothy M. Heckman; Ricardo Amorín; Sanchayeeta Borthakur; John Chisholm; Harry Ferguson; Sophia Flury; Mauro Giavalisco; Andrea Grazian; Matthew Hayes; Alaina Henry; Anne Jaskot; Zhiyuan Ji; Kirill Makan; Stephan McCandliss; M. S. Oey; Göran Östlin; Alberto Saldana-Lopez; Daniel Schaerer; Trinh Thuan; Gábor Worseck; Xinfeng Xu
Palabras clave: Space and Planetary Science; Astronomy and Astrophysics.
Pp. 3