145 citations · 261 across the 8 of their papers we have counts for
9 papers
Astrometric Detection of Earthlike Planets
Michael Shao, Geoff Marcy, Joseph H. Catanzarite +12
Astrometry can detect rocky planets in a broad range of masses and orbital distances and measure their masses and three-dimensional orbital parameters, including eccentricity and i…
No Planet Left Behind: Investigating Planetary Diversity and Architecture with SIM Lite
S. R. Kulkarni, H. E. Schlichting, B. M. S. Hansen +1
The evidence is mounting that star formation necessarily involves planet formation. We clearly have a vested interest in finding other Earths but a true understanding of planet for…
Distance to NGC 0247
Barry F. Madore, Wendy L. Freedman, J. Catanzarite +1
We report VRI CCD observations of nine Cepheids in the South Polar (Sculptor) Group spiral galaxy NGC 0247. Periods of these Cepheids range from 20 to 70 days. Over the past 20 yea…
Astrometric Detection of exo-Earths in the Presence of Stellar Noise
Joseph Catanzarite, Nicholas Law, Michael Shao
Space astrometry is capable of sub-microarcsecond measurements of star positions. A hundred visits over several years could yield relative astrometric precision of ~0.1 uas, below…
Overview of the SIM PlanetQuest Light (SIM-Lite) mission concept
R. Goullioud, J. H. Catanzarite, F. G. Dekens +2
The Space Interferometry Mission PlanetQuest Light (or SIM-Lite) is a new concept for a space borne astrometric instrument, to be located in a solar Earth-trailing orbit. SIM-Lite…
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…