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SZ Sculptoris: Light Curve Analyses and Period Study of the Totally Eclipsing, Galactic South Pole, Solar-Type Binary
Hill, R.; Van Hamme, W.; Samec, R. G.
We report here on the first precision BVRI observations, analysis and period study of SZ Sculptoris (GSC 6990-0597), a solar type (T ~ 5040 K), shallow contact, eclipsing binary. It was observed on 2019 October 05 and 2019 November 05 and 07 in remote mode with the Cerro Tololo InterAmerican Observatory 0.6-m SARA South reflector by R. Samec and R…
Using Herschel and Planck observations to delineate the role of magnetic fields in molecular cloud structure (Corrigendum)
Soler, Juan D.
High reddening patches in Gaia DR2. Possible artifacts or indication of star formation at the edge of the Galactic disk
Beitia-Antero, Leire; Gómez de Castro, Ana Inés; de la Fuente Marcos, Raúl
Context. Deep GALEX UV data show that the extreme outskirts of some spiral galaxies are teeming with star formation. Such young stellar populations evolving so far away from the bulk of their host galaxies challenge our overall understanding of how star formation proceeds at galactic scales. It is at present unclear whether our own Milky Way may a…
14 New Eclipsing Variables
Khruslov, A. V.
Non-detection of M60-UCD1 in Quasi-simultaneous X-Ray and Radio Observations
Jonker, Peter G.; Lena, Davide; Miller-Jones, James C. A. +1 more
Simultaneous detection in X-rays and radio, following the proportionality implied by the "fundamental plane of black hole activity," can indicate the presence of an accreting black hole (BH), allowing a rough estimate of its mass. We used the XMM-Newton satellite and the Karl G. Jansky Very Large Array to perform quasi-simultaneous observations (w…
A Comparison of Elemental Abundances Derived from Chandrayaan-2 Class and Chandrayaan-1 M3 from the Western Nearside of the Moon
Wöhler, C.; Bhatt, M.; Narendranath, S. +3 more
We present a comparison of the abundance of Al, Mg, and Si estimated using the Chandrayaan-2 CLASS with the elemental abundance estimation derived using M3.
KR Persei, a Mid-F Eclipsing Binary with a One-day Period
Fekel, Francis C.; Muterspaugh, Matthew W.; Sowell, James R. +5 more
KR Per is a partially eclipsing binary with an orbital period of 0.9960798 days, very close to one sidereal day, making it difficult to obtain extensive phase coverage in a reasonable amount of time. We used the Wilson-Devinney program to determine its orbital elements and stellar absolute dimensions from recently acquired radial velocities and di…
Comparison of photometric results between the Serbian and Bulgarian telescopes and activities in line with Gaia Alerts (Gaia-FUN-TO)
Damljanović, Goran; Cvetković, Zorica; Pavlović, Rade +5 more
We established the cooperation "Serbian-Bulgarian mini-network telescopes" in 2013, as well as two SANU-BAN joint research projects ("Observations of ICRF radio-sources visible in optical domain" during 2014-2016, and "Study of ICRF radio-sources and fast variable astronomical objects" for the period 2017-2019). Here, some main results of that coo…
Gaia DR3 and Some Results of Serbian-Bulgarian Cooperation
Damljanović, Goran
The Faint Optical Counterparts Catalog at 19.4 < r < 22 mag from Herschel-ATLAS SDP Field
Wu, Hong; Zhu, Yi-Nan; Zhou, Zhi-Min +2 more
We carry out a spectroscopic survey with Hectospec mounted on the 6.5 m Multiple Mirror Telescope to obtain redshifts of optical counterparts of the Herschel-ATLAS sources in the science demonstration phase field. Our work concerns counterparts with a magnitude range at $19.4\lt {r}_{\mathrm{SDSS}}\lt 22$ mag. The observation covers two $\sim 1\ {…