Search Publications
Asteroid Photometric Phase Functions From Bayesian Lightcurve Inversion
Muinonen, Karri; Cellino, Alberto; Wang, Xiaobin +3 more
Photometry is an important tool for characterizing the physical properties of asteroids. An asteroid's photometric lightcurve and phase curve refer to the variation of the asteroid's disk-integrated brightness in time and in phase angle (the Sun-asteroid-observer angle), respectively. They depend on the asteroid's shape, rotation, and surface scat…
Eight Years of TIGRE Robotic Spectroscopy: Operational Experience and Selected Scientific Results
Nazé, Yaël; Rauw, Gregor; Jack, Dennis +4 more
TIGRE (Telescopio Internacional de Guanajuato Robótico Espectroscópico) has been operating in fully robotic mode in the La Luz Observatory (Guanajuato, Mexico) since the end of 2013. With its sole instrument, HEROS, an échelle spectrograph with a spectral resolution R ∼20,000, TIGRE has collected more than 48,000 spectra of 1,151 different sources…
Three-dimensional magnetic fields of molecular clouds
Tahani, Mehrnoosh
To investigate the role of magnetic fields in the evolution of the interstellar medium, formation and evolution of molecular clouds, and ultimately the formation of stars, their three-dimensional (3D) magnetic fields must be probed. Observing only one component of magnetic fields (along the line of sight or parallel to the plane of the sky) is ins…
Exoplanet Two-Square Degree Survey With SAO RAS Robotic Facilities
Korablev, Oleg I.; Valeev, Azamat F.; Yakovlev, Oleg Ya. +15 more
We used the 0.5-m robotic telescope located at the Special Astrophysical Observatory of the Russian Academy of Sciences for monitoring two square degrees of the sky with the aim of detecting new exoplanets. A dimming of the visible brightness is expected due to the exoplanets transiting their host stars. We analyzed about 25,000 raw images of star…
Consolidation of the Gaia catalogue with Chinese Space Station Telescope astrometry
Lattanzi, M.; Busonero, D.; Cancelliere, R. +4 more
The issue of preservation and improvement of the Gaia catalogue throughout the next few decades is addressed. The goal of this paper is to evaluate the feasibility of astrometric parameter update, for objects already in the catalogue, by inclusion of new observations from other space missions, in particular CSST. The proposed approach consists in …
The colibri telescope array for KBO detection through serendipitous stellar occultations: A technical description
Metchev, Stanimir; Pass, Emily; Mazur, Michael J. +4 more
We present the technical design, construction and testing of the Colibri telescope array at Elginfield Observatory near London, Ontario, Canada. Three 50-cm telescopes are arranged in a triangular array and are separated by 110–160 m. During operation, they will monitor field stars at the intersections of the ecliptic and galactic plane for serend…
SQUAB—I: The First Release of Strange QUasar Candidates With ABnormal Astrometric Characteristics From Gaia EDR3 and SDSS
Zheng, Zhen-Ya; Ji, Xiang; An, Tao +5 more
Given their extremely large distances and small apparent sizes, quasars are generally considered as objects with near-zero parallax and proper motion. However, some special quasars may have abnormal astrometric characteristics, such as quasar pairs, lensed quasars, AGNs with bright parsec-scale optical jets, which are scientifically interesting ob…
Pipeline for the Antarctic Survey Telescope 3-3 in Yaoan, Yunnan
Wang, Lifan; Castro-Tirado, A. J.; Hu, Lei +5 more
AST3-3 is the third robotic facility of the Antarctic Survey Telescopes (AST3) for transient surveys to be deployed at Dome A, Antarctica. Due to the current pandemic, the telescope has been currently deployed at the Yaoan Observation Station in China, starting the commissioning observation and a transient survey. This article presented a fully au…