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A new photometric study of T Tauri stars in the infrared
Chen, P. S.; Liu, J. Y.; Shan, H. G.
We have compiled infrared photometric data from the literature of practically all T Tauri stars found up to date including 444 classical T Tauri stars (CTTSs), 1698 weak-line T Tauri stars (WTTSs) and 1258 not classified T Tauri stars (3400 in total) in addition to 196 post-T Tauri stars (PTTSs). From this data bank we extract the infrared charact…
Exoplanet system Kepler-2 with comparisons to Kepler-1 and 13
Budding, Edwin; Rhodes, Michael D.; Banks, Timothy S. +1 more
We have carried out an intensive study of photometric (Kepler Mission) and spectroscopic data on the system Kepler-2 (HAT-P-7A) using the dedicated software WINFITTER 6.4. The mean individual data-point error of the normalized flux values for this system is 0.00015, leading to the model's specification for the mean reference flux to an accuracy of…
A multiwavelength view of the open cluster NGC 2527: discovery of active stars
Singh, K. P.; Shah, Nevil; Subramaniam, Annapurni
Star clusters are ideal platforms for categorizing X-ray emitting stars and to study X-ray emission as a function of stellar age and activity. We present a comprehensive study of an open star cluster, NGC 2527, by combining data from XMM-UVOT-Gaia. Cluster membership of stars and their photometry are taken from Gaia and cross-matched with XMM and …
Interacción entre el RSN G359.1-0.5 y el medio interestelar
Combi, J. A.; Eppens, L. K.; Reynoso, E. M. +1 more
G359.1-0.5 is a supernova remnant near the Galactic center region that belongs to the mixed morphology type, showing a radio continuum shell and diffuse thermal X-ray emission inside. Earlier molecular studies around the location of G359.1-0.5 revealed an annular CO structure in the velocity range from $-190$ to $-60~\rm{km} \rm{s}^{-1}$ with an H…
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.