806 citations · 2.8k across the 15 of their papers we have counts for
15 papers
Constraints on Planet Occurrence around Nearby Mid-to-Late M Dwarfs from the MEarth Project
Zachory K. Berta, Jonathan Irwin, David Charbonneau
The MEarth Project is a ground-based photometric survey to find planets transiting the closest and smallest main-sequence stars. In its first four years, MEarth discovered one tran…
Transit Detection in the MEarth Survey of Nearby M Dwarfs: Bridging the Clean-First, Search-Later Divide
Zachory K. Berta, Jonathan Irwin, David Charbonneau +2
In the effort to characterize the masses, radii, and atmospheres of potentially habitable exoplanets, there is an urgent need to find examples of such planets transiting nearby M d…
The First Maximum-Light Ultraviolet through Near-Infrared Spectrum of a Type Ia Supernova
Ryan J. Foley, Markus Kromer, G. Howie Marion +21
We present the first maximum-light ultraviolet (UV) through near-infrared (NIR) Type Ia supernova (SN Ia) spectrum. This spectrum of SN 2011iv was obtained nearly simultaneously by…
The Flat Transmission Spectrum of the Super-Earth GJ1214b from Wide Field Camera 3 on the Hubble Space Telescope
Zachory K. Berta, David Charbonneau, Jean-Michel Désert +7
Capitalizing on the observational advantage offered by its tiny M dwarf host, we present HST/WFC3 grism measurements of the transmission spectrum of the super-Earth exoplanet GJ121…
The Optical and Near-Infrared Transmission Spectrum of the Super-Earth GJ1214b: Further Evidence for a Metal-Rich Atmosphere
Jacob L. Bean, Jean-Michel Désert, Petr Kabath +7
We present an investigation of the transmission spectrum of the 6.5 M_earth planet GJ1214b based on new ground-based observations of transits of the planet in the optical and near-…
LSPM J1112+7626: detection of a 41-day M-dwarf eclipsing binary from the MEarth transit survey
Jonathan M. Irwin, Samuel N. Quinn, Zachory K. Berta +13
We report the detection of eclipses in LSPM J1112+7626, which we find to be a moderately bright (I_C = 12.14 +/- 0.05) very low-mass binary system with an orbital period of 41.0323…
Observational evidence for a metal rich atmosphere on the super-Earth GJ1214b
Jean-Michel Désert, Jacob Bean, Eliza Miller-Ricci Kempton +6
We report observations of two consecutive transits of the warm super-Earth exoplanet GJ1214b at 3.6 and 4.5 microns with the Infrared Array Camera instrument on-board the Spitzer S…
The Transit Light Curve Project. XIII. Sixteen Transits of the Super-Earth GJ 1214b
Joshua A. Carter, Joshua N. Winn, Matthew J. Holman +4
We present optical photometry of 16 transits of the super-Earth GJ 1214b, allowing us to refine the system parameters and search for additional planets via transit timing. Starspot…
The GJ1214 Super-Earth System: Stellar Variability, New Transits, and a Search for Additional Planets
Zachory K. Berta, David Charbonneau, Jacob Bean +5
The super-Earth GJ1214b transits a nearby M dwarf that exhibits 1% intrinsic variability in the near-infrared. Here, we analyze new observations to refine the physical properties o…
On the angular momentum evolution of fully-convective stars: rotation periods for field M-dwarfs from the MEarth transit survey
Jonathan Irwin, Zachory K. Berta, Christopher J. Burke +4
We present rotation period measurements for 41 field M-dwarfs, all of which have masses inferred (from their parallaxes and 2MASS K-band magnitudes) to be between the hydrogen burn…
NLTT 41135: a field M-dwarf + brown dwarf eclipsing binary in a triple system, discovered by the MEarth observatory
Jonathan Irwin, Lars Buchhave, Zachory K. Berta +13
We report the discovery of an eclipsing companion to NLTT 41135, a nearby M5 dwarf that was already known to have a wider, slightly more massive common proper motion companion, NLT…
A super-Earth transiting a nearby low-mass star
David Charbonneau, Zachory K. Berta, Jonathan Irwin +16
A decade ago, the detection of the first transiting extrasolar planet provided a direct constraint on its composition and opened the door to spectroscopic investigations of extraso…
Spin-orbit misalignment in the HD80606 planetary system
F. Pont, G. Hebrard, J. M. Irwin +5
We recently reported the photometric and spectroscopic detection of the primary transit of the 111-day-period, eccentric extra-solar planet HD80606 b, at Observatoire de Haute-Prov…
GJ 3236: a new bright, very low-mass eclipsing binary system discovered by the MEarth observatory
Jonathan Irwin, David Charbonneau, Zachory K. Berta +14
We report the detection of eclipses in GJ 3236, a bright (I = 11.6) very low mass binary system with an orbital period of 0.77 days. Analysis of light- and radial velocity curves o…
The role of spin in the formation and evolution of galaxies
Zachory K. Berta, Raul Jimenez, Alan F. Heavens +1
Using the SDSS spectroscopic sample, we estimate the dark matter halo spin parameter lambda for ~53,000 disk galaxies for which MOPED star formation histories are available. We inv…