672 citations · 10.2k across the 148 of their papers we have counts for
6 papers · 1 filter
The Absolute Magnitude of RRc Variables From Statistical Parallax
Juna A. Kollmeier, Dorota M. Szczygiel, Christopher R. Burns +12
We present the first definitive measurement of the absolute magnitude of RR Lyrae c-type variable stars (RRc) determined purely from statistical parallax. We use a sample of 247 RR…
Obliquities of Hot Jupiter host stars: Evidence for tidal interactions and primordial misalignments
Simon Albrecht, Joshua N. Winn, John A. Johnson +10
We provide evidence that the obliquities of stars with close-in giant planets were initially nearly random, and that the low obliquities that are often observed are a consequence o…
A planetary system around the nearby M dwarf GJ 667C with at least one super-Earth in its habitable zone
Guillem Anglada-Escudé, Pamela Arriagada, Steven S. Vogt +14
We re-analyze 4 years of HARPS spectra of the nearby M1.5 dwarf GJ 667C available through the ESO public archive. The new radial velocity (RV) measurements were obtained using a ne…
Outliers in the 0Z Survey
Judith G. Cohen, Norbert Christlieb, Ian Thompson +2
We have now completed detailed abundance analyses of more than 100 stars selected as candidate extremely metal-poor stars with [Fe/H] < -3.0 dex. Of these 18 are below -3.3 dex on…
A direct measurement of hierarchical growth in galaxy groups since z~1
Rik J. Williams, Daniel D. Kelson, John S. Mulchaey +3
We present the first measurement of the evolution of the galaxy group stellar mass function (GrSMF) to redshift z>~1 and low masses (M*>10^12 Msun). Our results are based on early…
The Carnegie-Spitzer-IMACS Redshift Survey of Galaxy Evolution since z=1.5: I. Description and Methodology
Daniel D. Kelson, Rik J. Williams, Alan Dressler +6
We describe the Carnegie-Spitzer-IMACS (CSI) Survey, a wide-field, near-IR selected spectrophotometric redshift survey with the Inamori Magellan Areal Camera and Spectrograph (IMAC…