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Mineralogical and Morphological Investigation of Butterfly-Shaped Unnamed Crater Using Datasets from Recent Lunar Missions
Pathak, S.; Bhattacharya, S.; Naik, S. S. +3 more
Mineralogical and morphological analyses of an unnamed-butterfly-shaped crater have been studied using Chandrayaan-2 IIRS and other data sets.
Terrestrial Martian analogues from the Indian subcontinent: Implications for hydrological activity on Mars
Chavan, Anil; Bhandari, Subhash; Bhore, Vivek
Martian geology and surface geomorphic features are grouped under Noachian, Hesperian, and Amazonian eras, based on the crater retention ages and resurfacing ages by crater densities. Comparing the similarities and differences between Martian landforms and their terrestrial analogues promotes an understanding of how surface processes operated on b…
Possibilities of velocity field analysis from Hinode SOT/SP data
Mozharovsky, Sergei G.
The possibility of analyzing the line of sight (LOS) velocity and its gradient at each point of the Hinode SOT/SP maps using bisector analysis is revealed. A technique for obtaining such gradient is described. To estimate the velocity gradient, it is necessary to know both the velocity value and the layer height to which the bisector point is resp…
Análisis cinemático de una eyección coronal de masa de 10 a 46 radios solares
Cremades, H.; Balmaceda, L. A.; Di Lorenzo, L.
In this work we perform the three-dimensional reconstruction (3D) of the morphology of a coronal mass ejection (CME), in the range of heliocentric distances of approximately 10 to 46 solar radii. The event occurs on 2 April 2019, and we use observations made by LASCO-C3 aboard the Solar and Heliospheric Observatory (SOHO), SECCHI-COR2 and HI-1 abo…
Constraining the shape of Milky Way satellites with distance gradients
Koposov, Sergey E.; An, Zhaozhou
We combine the Dark Energy Camera Legacy Survey DR8 photometry with Gaia photometry to study the 3D structure of Bootes I, Draco, Ursa Minor, Sextans, and Sculptor dwarf galaxies using blue horizontal branch (BHB) stars as distance indicators. We construct a new colour-absolute magnitude of BHB stars that we use to measure the distance gradients w…
Numerical modeling of mapping of Martian epithermal neutron emission: Applications to FREND investigation onboard ESA's Trace Gas Orbiter
Mitrofanov, I. G.; Golovin, D. V.; Litvak, M. L. +2 more
Neutron telescope FREND is operating onboard ESA TGO mission from May 2018 till present. The instrument measures epithermal neutron flux from the Martian surface. Measured variations of the neutron flux may be used to determine hydrogen abundance in the soil usually interpreted as a water/water ice. The unique design of the instrument provides mea…
Martian Atmospheric Spectral End-Members Retrieval From ExoMars Thermal Infrared (TIRVIM) Data
Grigoriev, A.; Korablev, O.; Arnold, G. +7 more
Key knowledge about planetary composition can be recovered from the study of thermal infrared spectral range datasets. This range has a huge diagnostic potential because it contains diagnostic absorptions from a planetary surface and atmosphere. The main goal of this study is to process and interpret the dataset from the Thermal Infrared channel (…
X-ray absorption and reprocessing in the z 2.5 lensed quasar 2MASS J1042+1641
Stern, D.; Brightman, M.; Walton, D. J. +2 more
We present new broad-band X-ray observations of the z ~ 2.5 lensed quasar 2MASS J1042+1641, combining XMM-Newton, Chandra, and NuSTAR to provide coverage of the X-ray spectrum over the 0.3-40 keV bandpass in the observed frame, corresponding to the ~1-140 keV band in the rest frame of 2MASS J1042+1641. The X-ray data show clear evidence for strong…
Gaia EDR3 Data For Three Young Stellar Objects
Gigoyan, K. K.; Gigoyan, K. S.; Azatyan, N. M.
We present Gaia Early Data Release 3 (GaiaEDR3) high accurate astrometric and photometric data and also Catalina Sky Survey (CSS) phase-dependent light curves for three Young Stellar Objects (YSO). They are LRL245, 2MASSJ04300424+3533238, and CVSO592. These tree YSOs are presented as periodic variables in the Catalina Surveys Data Release-1 (CSDR1…
Five New faint cataclysmic variables from the Zwicky Transient Facility
Bernhard, K.; Lloyd, Ch.
A search of faint, large-amplitude variables in the Zwicky Transient Facility datahas led to the identification of five new CVs. Four of the stars, ZTFJ010013.34+610809.8, ZTFJ051913.86+293006.0, ZTFJ210441.02+394052.7 and ZTFJ210705.14+394617.7 are probably SS Cyg-type systems, while ZTFJ173854.93+175136.3 is a likely SU UMa system.