200 citations · 394 across the 21 of their papers we have counts for
5 papers · 1 filter
Relative astrometry in an annular field
Mario Gai, Alberto Vecchiato, Alberto Riva +4
Background. Relative astrometry at or below the micro-arcsec level with a 1m class space telescope has been repeatedly proposed as a tool for exo-planet detection and characterizat…
Astrometric precision tests on TESS data
Mario Gai, Alberto Vecchiato, Alberto Riva +5
Background. Astrometry at or below the micro-arcsec level with an imaging telescope assumes that the uncertainty on the location of an unresolved source can be an arbitrarily small…
ET White Paper: To Find the First Earth 2.0
Jian Ge, Hui Zhang, Weicheng Zang +163
We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)". This mission is designed to measure, for the first time,…
CHES: a space-borne astrometric mission for the detection of habitable planets of the nearby solar-type stars
Jianghui Ji, Haitao Li, Junbo Zhang +19
The Closeby Habitable Exoplanet Survey (CHES) mission is proposed to discover habitable-zone Earth-like planets of the nearby solar-type stars ( away from our…
SQUAB I: The first release of Strange QUasar candidates with ABnormal astrometric characteristics from Gaia EDR3 and SDSS
Qi-Qi Wu, Shi-Long Liao, Xiang Ji +4
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…