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Faint objects in motion: the new frontier of high precision astrometry
Fabien Malbet, Céline Boehm, Alberto Krone-Martins +83
Sky survey telescopes and powerful targeted telescopes play complementary roles in astronomy. In order to investigate the nature and characteristics of the motions of very faint ob…
A small actively-controlled high-resolution spectrograph based on off-the-shelf components
H. R. A. Jones, W. E. Martin, G. Anglada-Escudé +5
We present the design and testing of a prototype in-plane echelle spectrograph based on an actively controlled fibre-fed double-pass design. This system aims to be small and effici…
Identification and Mitigation of a Vibrational Telescope Systematic with Application to Spitzer
Ryan C. Challener, Joseph Harrington, James Jenkins +17
We observed Proxima Centauri with the Spitzer Space Telescope InfraRed Array Camera (IRAC) five times in 2016 and 2017 to search for transits of Proxima Centauri b. Following stand…
Theia: Faint objects in motion or the new astrometry frontier
The Theia Collaboration, Celine Boehm, Alberto Krone-Martins +96
In the context of the ESA M5 (medium mission) call we proposed a new satellite mission, Theia, based on relative astrometry and extreme precision to study the motion of very faint…
Retrieval of Precise Radial Velocities from Near-Infrared High Resolution Spectra of Low Mass Stars
Peter Gao, Peter Plavchan, Jonathan Gagné +21
Given that low-mass stars have intrinsically low luminosities at optical wavelengths and a propensity for stellar activity, it is advantageous for radial velocity (RV) surveys of t…
Precision near-infrared radial velocity instrumentation I: Absorption Gas Cells
Peter P. Plavchan, Guillem Anglada-Escude, Russel White +18
We have built and commissioned gas absorption cells for precision spectroscopic radial velocity measurements in the near-infrared in the H and K bands. We describe the construction…
The Carnegie Astrometric Planet Search Program
Alan P. Boss, Alycia J. Weinberger, Guillem Anglada-Escude +8
We are undertaking an astrometric search for gas giant planets and brown dwarfs orbiting nearby low mass dwarf stars with the 2.5-m du Pont telescope at the Las Campanas Observator…
Perspective acceleration and gravitational redshift. Measuring masses of individual white dwarfs using Gaia + SIM astrometry
G. Anglada-Escude, J. H. Debes
According to current plans, the SIM/NASA mission will be launched just after the end of operations for the Gaia/ESA mission. This is a new situation which enables long term astrome…