Search Publications
Search for shallow subsurface structures in Chryse and Acidalia Planitiae on Mars
Tsuchiya, Fuminori; Kimura, Tomoki; Kumamoto, Atsushi +6 more
Chryse and Acidalia Planitiae (CAP) are known as one of the areas which have abundant sites of recurring slope lineae (RSL) on Mars. We present a radar survey of shallow subsurface structures across the CAP regions using the Mars SHAllow RADar sounder (SHARAD) onboard the Mars Reconnaissance Orbiter (MRO). A total of 25 subsurface reflectors were …
New views in the ultraviolet of the Andromeda galaxy enabled by the AstroSAT/UVIT Telescope
Buick, Megan; Postma, Joseph E.; Leahy, Denis A. +2 more
The UVIT instrument on AstroSat has carried out a survey of our neighboring Andromeda galaxy, with a set of 19 fields to cover its large angular extent. The survey is complete in the FUV F148W filter, and about halfcomplete in FUV F169M, FUV F172M, NUV N219M and NUV N279N filters. The NUV coverage is incomplete due to failure of the NUV detector p…
Evaluating the feasibility of interpretable machine learning for globular cluster detection
Fahrion, Katja; Dold, Dominik
Extragalactic globular clusters (GCs) are important tracers of galaxy formation and evolution because their properties, luminosity functions, and radial distributions hold valuable information about the assembly history of their host galaxies. Obtaining GC catalogues from photometric data involves several steps which will likely become too time-co…
Hyades Kinematics and the Relationship Between Galactic Coordinates and its Angular Distance from the Apex with Gaia EDR3
Elsanhoury, W. H.; Al-Johani, Amnah S.; Al-Juhani, Afaf +6 more
In this paper, we have improved the Hyades members with aid of the Gaia EDR3 source. We have studied their kinematics, including computations of the convergent point with AD-diagram method such as \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathr…
Reflectance study of ice and Mars soil simulant associations-II. CO2 and H2O ice
Thomas, Nicolas; Pommerol, Antoine; Poch, Olivier +1 more
We measure the visible and near-infrared reflectance of icy analogues of the Martian surface made of CO2 ice associated in different ways with H2O ice and the regolith simulant JSC Mars-1. Such experimental results obtained with well-controlled samples in the laboratory are precious to interpret quantitatively the imaging and…
Precise Measurement of Orbital and Physical Parameters of Bright Detached Solar Analog Eclipsing Binaries
Çakırlı, Ö.; Kayhan, C.; Hoyman, B. +2 more
We combined photometry from the All Sky Automated Survey (ASAS) and the Transiting Exoplanet Survey Satellite (TESS) with high-resolution spectroscopy from the ESO public archive to obtain, for the first time, absolute physical and orbital parameters for six double-lined detached eclipsing binary systems with solar-type components. The atmospheric…
RXTE Observation of the Nonthermal Emission from the Early Stage Merger in A1750
Henriksen, Mark J.
We make the first observation-based calculation of the energy that goes into cosmic ray protons versus cosmic ray electrons in shock acceleration during structure formation. We find a ratio of energy in cosmic ray protons to energy in cosmic ray electrons of 0.86. This value, calculated from the nonthermal X-ray component reported here from RTXE a…
Astroinformatics: The Importance of Mining Astronomical Data in Binary Stars Catalogues
Abushattal, A. A.; Alrawashdeh, A. A.; Kraishan, A. F.
The field of Astroinformatics offers exciting new perspectives on astronomical discovery through the implementation of advanced data mining procedures. Data deluges transform research practices and methodologies across various scientific disciplines, including day-to-day astronomical research. It is essential to use innovative algorithms and metho…
Characterisation of surface topography and mineralogy of Cardanus and Krafft craters in the western Procellarum region of Moon
Singh, Deepali; Singh, Priyadarshini; Roy, Nidhi +1 more
The craters on the lunar surface represent unique morphological and mineralogical characteristics. Cardanus (13.2°N; 72.4°W) and Krafft craters (16.6°N; 72.6°W) present in the equatorial transition region of the Moon represents distinctive features. The morphology of crater is studied using high-resolution data of Narrow Angle Camera (NAC) and Wid…
Reply to Comment by Stauning on "The PC Index Variations During 23/24 Solar Cycles: Relation to Solar Wind Parameters and Magnetic Disturbances"
Sormakov, D. A.; Troshichev, O. A.; Dolgacheva, S. A. +1 more
The polar cap magnetic activity index (PC) was approved by IAGA as an index characterizing the solar wind energy input into the magnetosphere. Relation of the PC index to solar wind parameters and solar activity during 23/24 solar cycles has been studied in paper (Troshichev et al., 2021, https://doi.…