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Four New Stellar Debris Streams in the Galactic Halo
Carl J. Grillmair
We report on the detection of four new stellar debris streams and a new dwarf galaxy candidate in the Sloan Digital Sky Survey. Three of the streams, ranging between 3 and 15 kpc i…
Fishing in Tidal Streams: New Radial Velocity and Proper Motion Constraints on the Orbit of the Anticenter Stream
Carl J. Grillmair, Jeffrey L. Carlin, Steven R. Majewski
We have obtained radial velocity measurements for stars in two, widely-separated fields in the Anticenter Stream. Combined with SDSS/USNO-B proper motions, the new measurements all…
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…
A Spitzer Spectrum of the Exoplanet HD 189733b
C. J. Grillmair, D. Charbonneau, A. Burrows +5
We report on the measurement of the 7.5-14.7 micron spectrum for the transiting extrasolar giant planet HD 189733b using the Infrared Spectrograph on the Spitzer Space Telescope. T…
Substructure in Tidal Streams; Tributaries in the Anticenter Ring
C. J. Grillmair
We report on the detection in Sloan Digital Sky Survey data of at least three, roughly parallel components in a 65 degree-long stellar stream complex previously identified with the…
Detection of a 63 Degree Cold Stellar Stream in the Sloan Digital Sky Survey
Carl J. Grillmair, Odysseas Dionatos
We report on the detection in Sloan Digital Sky Survey data of a 63 degree-long tidal stream of stars, extending from Ursa Major to Cancer. The stream has no obvious association wi…