234 citations · 608 across the 8 of their papers we have counts for
5 papers · 1 filter
Cool White Dwarfs Revisited -- New Spectroscopy and Photometry
Samir Salim, R. Michael Rich, Brad M. Hansen +3
In this paper we present new and improved data on 38 cool white dwarfs identified by Oppenheimer et al. 2001 (OHDHS) as candidate dark halo objects. Using the high-res spectra obta…
Direct Detection of Galactic Halo Dark Matter
B. R. Oppenheimer, N. C. Hambly, A. P. Digby +2
The Milky Way Galaxy contains a large, spherical component which is believed to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much as…
Coronagraphic Survey for Companions of Stars within 8 pc
B. R. Oppenheimer, D. A. Golimowski, S. R. Kulkarni +4
We present the technique and results of a survey of stars within 8 pc of the Sun with declinations $\bfδ> -35\arcdeg$ (J2000.00). The survey, designed to find without color bias fa…
Observations of Ultracool White Dwarfs
B. R. Oppenheimer, D. Saumon, S. T. Hodgkin +6
We present new spectroscopic and photometric measurements of the white dwarfs LHS 3250 and WD 0346+246. Along with F351-50, these white dwarfs are the coolest ones known, all with…
The Spectrum of the Brown Dwarf Gliese 229B
B. R. Oppenheimer, S. R. Kulkarni, K. Matthews +1
We present a spectrum of the cool (T_eff = 900 K) brown dwarf Gliese 229B. This spectrum, with a relatively high signal-to-noise ratio per spectral resolution element (> 30), spans…