Search Publications
Missions
Journals
Publication Years
An infrared study of the high-mass, multistage star-forming region IRAS 12272-6240
Elia, Davide; Tapia, Mauricio; Persi, Paolo +1 more
IRAS 12272-6240 is a complex star-forming region with a compact massive dense clump (DC) and several associated masers, located at a well-determined distance of d = 9.3 kpc from the Sun. For this study, we obtained sub-arcsec broad- and narrow-band near-infrared (near-IR) imaging and low-resolution spectroscopy with the Baade/Magellan telescope an…
Formation of Two Homologous Transequatorial Loops
Pevtsov, Alexei A.; Song, Yongliang; Su, Jiangtao +4 more
The formation mechanism of two homologous transequatorial loops (TLs) of July 7-8, 1999 (SOL1999-07-07) is studied. The TLs connected active region AR 8614 from the northern hemisphere to AR 8626 in the southern hemisphere. The first TL appeared as a distinct structure at 12:49 UT on July 7, the second TL appeared at 06:21 UT, on July 8. Important…
Studies of Exoplanets with Candidate TOI 717.01 and Confirmed HAT-P-3b (Abstract)
Nair, S.; Tock, K.; Koodli, K. +1 more
(Abstract only) Images of the exoplanets TOI 717.01, Qatar-8 b, and HAT-P-3 b were requested in the w-filter from the Las Cumbres Observatory 0.4-meter telescopes. Of these requests, images were taken of TOI 717.01 and HAT-P-3 b and were reduced using the EXOplanet Transit Interpretation Code (EXOTIC) software, as well as 6 photometric algorithms …
Physical Mechanism of a Solar Flare Based on the Accumulation of the Energy in the Magnetic Field of the Current Sheet in the Solar Corona
Podgorny, I. M.; Podgorny, A. I.
During a solar flare, the magnetic energy of ~1032 erg is released in a few dozens of minutes. The invariability of the magnetic field on the solar surface during flares proves the appearance of a flare in the corona. An analysis of the dynamics of the electron temperature of the solar atmosphere provides independent evidence of the cor…
Observations of Solar Type III radio bursts by Cassini/RPWS experiment
Boudjada, Mohammed Y.; Abou el-Fadl, Ahmed; Galopeau, Patrick H. M. +2 more
In this study, we report on the occurrence of solar Type III radio bursts recorded by radio and plasma wave experiment (RPWS) experiment onboard Cassini spacecraft. This instrument is designed to investigate the Saturn's plasma environment and sub-auroral radio missions. RPWS/Cassini experiment allows to measure electric field over a frequency ran…
Overtaking collisions of double layers and solitons: Tripolar structures and dynamical polarity switches
Olivier, C. P.; Verheest, F.
Overtaking collisions between double layers and solitons are investigated through the numerical simulation of the Gardner equation that governs small-amplitude double layers. The results show that the double layer emerges unaffected after the completion of the collision. However, the soliton that emerges from the collision has the opposite polarit…
Orbital Refinement and Stellar Properties for the HD 9446, HD 43691, and HD 179079 Planetary Systems
Henry, Gregory W.; Kane, Stephen R.; Pepper, Joshua +15 more
The Transit Ephemeris Refinement and Monitoring Survey is a project that aims to detect transits of intermediate-long period planets by refining orbital parameters of the known radial velocity planets using additional data from ground-based telescopes, calculating a revised transit ephemeris for the planet, then monitoring the planet host star dur…
Re-reduction of CCD observations of Triton in 1996-2006 with Gaia DR2 and comparison with ephemerides
Cheng, X.; Yan, D.; Qiao, R. C. +1 more
The release of new high-precision and high-density catalogue Gaia DR2 brings new opportunities and challenges to high-precision astrometry. The early CCD images of planet satellites can be re-processed so as to give positions that are much more accurate than those initially obtained. Based on Gaia DR2 catalogue, the early CCD images of Triton take…
CCD UBV(RI)KC photometry of the open clusters Juchert 9 and Berkeley 97
Sung, Hwankyung; Oralhan, İnci Akkaya; Çakmak, Hikmet +3 more
The CCD UBV(RI)KC photometry of the poorly studied open clusters Juchert 9 (Juc 9) and Berkeley 97 (Be 97), which are observed with the 0.84 m telescope at the San Pedro Mártir National Observatory, México has been analyzed. For the likely cluster members, we determined the reddenings, E(B‑V) = 0.82 ± 0.04 (Juc 9) and E(B‑V) = 0.87 ± 0.05 (Be 97),…
Mixed-morphology supernova remnants: the case of SNR 0520-69.4 in the Large Magellanic Cloud
Rosado, M.; Reyes-Iturbide, J.; Ramírez-Ballinas, I. +2 more
We present observations in X-ray and optical emission of the supernova remnant (SNR) 0520-69.4 in the Large Magellanic Cloud. Using XMM-Newton observatory data, we produced images of the diffuse X-ray emission and spectra to obtain the X-ray parameters, such as luminosity and temperature, of hot plasma in the SNR. Diffuse X-ray emission with fille…