Results 41 to 50 of about 2,208 (72)

Gaia reference frame amid quasar variability and proper motion patterns in the data

, 2016
Gaia's very accurate astrometric measurements will allow the International Celestial Reference Frame (ICRF) to be improved by a few orders of magnitude in the optical.
Bachchan, R. K., Hobbs, D., Lindegren, L.   +2 more
core   +1 more source

High-precision astrometry on the VLT/FORS1 at time scales of few days

, 2007
We investigate the accuracy of astrometric measurements with the VLT/FORS1 camera and consider potential applications. The study is based on two-epoch (2000 and 2002/2003) frame series of observations of a selected Galactic Bulge sky region that were ...
Avila, Bakhonski, Beaulieu, Boden, Bond, Colavita, D. Segransan, Dominik, Dominik, F. Pepe, Gaudi, Gaudi, Gaudi, Gould, Han, Hardy, Høg, Irwin, Jaroszynski, Lane, Lazorenko, Lazorenko, Lazorenko, Lindegren, M. Dominik, M. Mayor, Miyamoto, Monet, Motch, P. F. Lazorenko, Paczynski, Pravdo, Pravdo, Pravdo, Quirrenbach, S. Udry, Safizadeh, Udalski, Wittkowski   +38 more
core   +1 more source

On the Exploration of Quasars and the Astrometric Microlensing Effect with the Gaia Satellite [PDF]

, 2016
For two years, the Gaia satellite has been scanning the sky to obtain an unmatched positional accuracy of stars and a variety of data. In this thesis, we investigate two different kinds of questions with respect to Gaia. In our first research focus we explore Gaia data that is suitable to learn more about the structure of quasars. For this, we simulate
openaire  

MOA-2011-BLG-293Lb: First Microlensing Planet possibly in the Habitable Zone

, 2013
We used Keck adaptive optics observations to identify the first planet discovered by microlensing to lie in or near the habitable zone, i.e., at projected separation $r_\perp=1.1\pm 0.1\,$AU from its $M_{L}=0.86\pm 0.06\,M_\odot$ host, being the highest ...
Batista, V., Beaulieu, J. -P., Bennett, D. P., Fukui, A., Gaudi, B. S., Gould, A., Sumi, T., Udalski, A., Yee, J. C   +8 more
core   +3 more sources

Jupiter-like planets might be common in a low-density environment. [PDF]

Nat Commun, 2023
Gratton R, Mesa D, Bonavita M, Zurlo A, Marino S, Kervella P, Desidera S, D'Orazi V, Rigliaco E.   +8 more
europepmc   +1 more source

Exoplanets, extraterrestrial life and beyond: an interview with Douglas Lin. [PDF]

Natl Sci Rev, 2022
Xin 辛玲 L.
europepmc   +1 more source

Subaru Telescope -History, active/adaptive optics, instruments, and scientific achievements. [PDF]

Proc Jpn Acad Ser B Phys Biol Sci, 2021
Iye M.
europepmc   +1 more source

A low-mass planet candidate orbiting Proxima Centauri at a distance of 1.5 AU. [PDF]

Sci Adv, 2020
Damasso M, Del Sordo F, Anglada-Escudé G, Giacobbe P, Sozzetti A, Morbidelli A, Pojmanski G, Barbato D, Butler RP, Jones HRA, Hambsch FJ, Jenkins JS, López-González MJ, Morales N, Peña Rojas PA, Rodríguez-López C, Rodríguez E, Amado PJ, Amado PJ, Anglada G, Feng F, Gómez JF.   +21 more
europepmc   +1 more source

Exoplanet Biosignatures: Observational Prospects. [PDF]

Astrobiology, 2018
Fujii Y, Angerhausen D, Deitrick R, Domagal-Goldman S, Grenfell JL, Hori Y, Kane SR, Pallé E, Rauer H, Siegler N, Stapelfeldt K, Stevenson KB.   +11 more
europepmc   +1 more source

In search of planets and life around other stars. [PDF]

Proc Natl Acad Sci U S A, 1999
Lunine JI.
europepmc   +1 more source