Search Publications
Assessing membership projection errors in star forming regions
Cambrésy, L.; Boily, C. M.; Roland, T.
Context. Young stellar clusters harbour complex spatial structures emerging from the star formation process. Identifying stellar over-densities is a key step in better constraining how these structures are formed. The high accuracy of distances derived from Gaia DR2 parallaxes still do not allow us to locate individual stars within clusters of ≈1 …
Editor's note
Schartel, Norbert
Erratum: XMM-Newton large program on SN1006 - I. Methods and initial results of spatially resolved spectroscopy
Vink, Jacco; Miceli, Marco; Bocchino, Fabrizio +2 more
The Bright Eclipsing Binary NSV 4031 is not variable
Lloyd, C.; Walker, E. N.; Conner, D. +1 more
Observations of the supposed eclipsing binary NSV 4031 from time-series photometry and data from several synoptic instruments show no evidence of an eclipse or any periodic variation with an amplitude above 0.05 magnitudes. The spectral energy distribution of the star is very closely matched to a spectral type of F5IV.
Multiple Sun-Angle Aided Crater Morpho-Dynamics and Variation of Lommel Seeliger Corrected Radiance Factor with Respect to Phase Angles Using Terrain Mapping Camera Onboard Chandrayaan-1 and 2
Gupta, S.; Suresh, K.; Naik, S. S. +9 more
Low and high sun elevation images of TMC 2&1 (Chandryaan-2&1) used for ejecta characteristics, impact dynamics, and radiance factor as function of phase angles.
On the origin of stellar associations The impact of Gaia DR2
Carraro, G.
In this review I discuss different theories of the formation of OB associations in the Milky Way, and provide the observational evidences in support of them. In fact, the second release of Gaia astrometric data (April 2018) is revolutionising the field, because it allows us to unravel the 3D structure and kinematics of stellar associations with un…
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…