145 citations · 324 across the 6 of their papers we have counts for
6 papers
Taking the Measure of the Universe: Precision Astrometry with SIM PlanetQuest
Stephen C. Unwin, Michael Shao, Angelle M. Tanner +33
Precision astrometry at microarcsecond accuracy has application to a wide range of astrophysical problems. This paper is a study of the science questions that can be addressed usin…
On the dynamics of the ABDoradus system
J. C. Guirado, I. Marti-Vidal, J. M. Marcaide +8
We present an astrometric analysis of the binary systems ABDorA /ABDorC and ABDorBa / ABDorBb. These two systems of well-known late-type stars are gravitationally associated and th…
Disks, Tori, and Cocoons: Emission and Absorption Diagnostics of AGN Environments
R. Morganti, L. J. Greenhill, A. B. Peck +2
One of the most important problems in the study of active galaxies is understanding the detailed geometry, physics, and evolution of the central engines and their environments. The…
Space-VLBI phase-reference mapping and astrometry
J. C. Guirado, E. Ros, D. L. Jones +4
We present 5 GHz space-VLBI observations of the quasar pair B1342+662/B1342+663 that demonstrate the feasibility of phase-reference techniques using an antenna in space. The space-…
Deceleration in the Expansion of SN1993J
J. M. Marcaide, A. Alberdi, E. Ros +13
A rarity among supernova, SN 1993J in M81 can be studied with high spatial resolution. Its radio power and distance permit VLBI observations to monitor the expansion of its angular…
Interstellar Broadening of Images in the Gravitational Lens PKS 1830-211
D. L. Jones, R. A. Preston, D. W. Murphy +8
The remarkably strong radio gravitational lens PKS 1830-211 consists of a one arcsecond diameter Einstein ring with two bright compact (milliarcsecond) components located on opposi…