Search Publications
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.
Gas Dynamic Models of the Interaction between the Solar Wind and Cometary Atmospheres
Baranov, V. B.
Gas dynamic models of the interaction between the solar wind and cometary atmospheres are considered. Interest in the development of such models arose sharply after the beginning of the investigations of comets with the use of spacecraft launched at distances close to their surfaces. The instruments on this spacecraft gave the possibility to inves…
New light curve analysis and period changes of the HW Vir-type binary system V1828 Aql
Bulut, İ.; Nehir, Ç.
The new BVRI photometric observations of the HW Vir-type eclipsing binary system V1828 Aql (P = 0.11037399 days) were presented. From these measurements, 16 new eclipse times have been obtained. The light curves in BVRI colors and the radial curves were simultaneously analyzed by using the Wilson-Devinney method for the system parameters. The syst…
Eccentric orbits and apsidal motion in the eclipsing binaries EK Cep and HS Her
Gazeas, Kosmas; Latković, Olivera; Čeki, Atila +2 more
We present the first modern analysis of two young eclipsing binaries, EK Cep and HS Her, based on new ground-based CCD multicolour light curves and the Transiting Exoplanet Survey Satellite (TESS) observations, radial velocity curves, and eclipse timing measurements. The orbital and stellar parameters of the stars are determined by Roche modelling…