Publications (69)
Discovery of a Very Low Mass Triple with Late-M and T Dwarf Components: LP 704-48/SDSS J0006-0852AB
Adam J. Burgasser, Christopher Luk, Saurav Dhital +5
We report the identification of the M9 dwarf SDSS J000649.16-085246.3 as a spectral binary and radial velocity variable with components straddling the hydrogen burning mass limit.…
K2-66b and K2-106b: Two extremely hot sub-Neptune-size planets with high densities
Evan Sinukoff, Andrew W. Howard, Erik A. Petigura +20
We report precise mass and density measurements of two extremely hot sub-Neptune-size planets from the K2 mission using radial velocities, K2 photometry, and adaptive optics imagin…
M2K: II. A Triple-Planet System Orbiting HIP 57274
Debra A. Fischer, Eric Gaidos, Andrew Howard +14
Doppler observations from Keck Observatory have revealed a triple planet system orbiting the nearby mid-type K dwarf, HIP 57274. The inner planet, HIP 57274b, is a super-Earth with…
Spatially resolved STIS spectra of WR+OB binaries with colliding winds
Sebastien Lepine, Debra Wallace, Michael M. Shara +2
We present spatially resolved spectra of the visual WR+OB massive binaries WR86, WR146, and WR147, obtained with the Space Telescope Imaging Spectrograph on board the Hubble Space…
The Space Motion of the Globular Cluster NGC 6397
Jasonjot S. Kalirai, Jay Anderson, Harvey B. Richer +12
As a by-product of high-precision, ultra-deep stellar photometry in the Galactic globular cluster NGC 6397 with the Hubble Space Telescope, we are able to measure a large populatio…
LSR1610-0040: the first early-type L subdwarf
Sebastien Lepine, R. Michael Rich, Michael M. Shara
We report the discovery of LSR1610-0040, a previously unreported r=17.5 star with a very high proper motion mu=1.46"/yr. This very cool star (b-i=6.3) is found to have a peculiar s…