302 citations · 1.4k across the 19 of their papers we have counts for
19 papers
Planet Detectability in the Alpha Centauri System
Lily L. Zhao, Debra A. Fischer, John M. Brewer +2
We use more than a decade of radial velocity measurements for Cen A, B, and Proxima Centauri from HARPS, CHIRON, and UVES to identify the and orbital periods of plan…
A combined spectroscopic and photometric stellar activity study of Epsilon Eridani
Matthew J. Giguere, Debra A. Fischer, Cyril X. Y. Zhang +3
We present simultaneous ground-based radial velocity (RV) measurements and space-based photometric measurements of the young and active K dwarf Epsilon Eridani. These measurements…
Design and Construction of VUES: the Vilnius University Echelle Spectrograph
Colby Jurgenson, Debra Fischer, Tyler McCracken +5
In February of 2014 the Yale Exoplanet Laboratory was commissioned to design, build, and deliver a high resolution (R = 60,000) spectrograph for the 1.65-meter telescope at the Mol…
Newly-Discovered Planets Orbiting HD~5319, HD~11506, HD~75784 and HD~10442 from the N2K Consortium
Matthew J. Giguere, Debra A. Fischer, Matthew J. Payne +4
Initially designed to discover short-period planets, the N2K campaign has since evolved to discover new worlds at large separations from their host stars. Detecting such worlds wil…
Planet Hunters VII. Discovery of a New Low-Mass, Low-Density Planet (PH3 c) Orbiting Kepler-289 with Mass Measurements of Two Additional Planets (PH3 b and d)
Joseph R. Schmitt, Eric Agol, Katherine M. Deck +18
We report the discovery of one newly confirmed planet ( days, ) and mass determinations of two previously validated Kepler planets, Kepler-…
CHIRON TOOLS: Integrated Target Submission, Scheduling and Observing Systems for a High Resolution Fiber Fed Spectrograph
John M. Brewer, Matthew Giguere, Debra A. Fischer
The CHIRON spectrometer is a new high-resolution, fiber-fed instrument on the 1.5 meter telescope at Cerro Tololo Inter-America Observatory (CTIO). To optimize use of the instrumen…
CHIRON - A Fiber Fed Spectrometer for Precise Radial Velocities
Andrei Tokovinin, Debra A. Fischer, Marco Bonati +5
The CHIRON optical high-resolution echelle spectrometer was commissioned at the 1.5m telescope at CTIO in 2011. The instrument was designed for high throughput and stability, with…
Planet Hunters. V. A Confirmed Jupiter-Size Planet in the Habitable Zone and 42 Planet Candidates from the Kepler Archive Data
Ji Wang, Debra A. Fischer, Thomas Barclay +18
We report the latest Planet Hunter results, including PH2 b, a Jupiter-size (R_PL = 10.12 \pm 0.56 R_E) planet orbiting in the habitable zone of a solar-type star. PH2 b was elevat…
Planet Hunters: A Transiting Circumbinary Planet in a Quadruple Star System
Megan E. Schwamb, Jerome A. Orosz, Joshua A. Carter +17
We report the discovery and confirmation of a transiting circumbinary planet (PH1b) around KIC 4862625, an eclipsing binary in the Kepler field. The planet was discovered by volunt…
Planet Hunters: Assessing the Kepler Inventory of Short Period Planets
Megan E. Schwamb, Chris J. Lintott, Debra A. Fischer +7
We present the results from a search of data from the first 33.5 days of the Kepler science mission (Quarter 1) for exoplanet transits by the Planet Hunters citizen science project…
Planet Hunters: New Kepler planet candidates from analysis of quarter 2
Chris J. Lintott, Megan E. Schwamb, Thomas Barclay +17
We present new planet candidates identified in NASA Kepler quarter two public release data by volunteers engaged in the Planet Hunters citizen science project. The two candidates p…
Planet Hunters: The First Two Planet Candidates Identified by the Public using the Kepler Public Archive Data
Debra Fischer, Megan Schwamb, Kevin Schawinski +28
Planet Hunters is a new citizen science project, designed to engage the public in an exoplanet search using NASA Kepler public release data. In the first month after launch, users…
A High Eccentricity Component in the Double Planet System Around HD 163607 and a Planet Around HD 164509
Matthew J. Giguere, Debra A. Fischer, Andrew W. Howard +7
We report the detection of three new exoplanets from Keck Observatory. HD 163607 is a metal-rich G5IV star with two planets. The inner planet has an observed orbital period of 75.2…
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…
M2K: I. A Jovian mass planet around the M3V star HIP79431
Kevin Apps, Kelsey I. Clubb, Debra A. Fischer +10
Doppler observations from Keck Observatory reveal the presence of a planet with Msini of 2.1 Mjup orbiting the M3V star HIP79431. This is the sixth giant planet to be detected in D…
Two Exoplanets Discovered at Keck Observatory
J. A. Valenti, D. A. Fischer, G. W. Marcy +6
We present two exoplanets detected at Keck Observatory. HD 179079 is a G5 subgiant that hosts a hot Neptune planet with Msini = 27.5 M_earth in a 14.48 d, low-eccentricity orbit. T…
Five planets and an independent confirmation of HD 196885Ab from Lick Observatory
D. A. Fischer, P. Driscoll, H. Isaacson +9
We present time series Doppler data from Lick Observatory that reveal the presence of long-period planetary companions orbiting nearby stars. The typical eccentricity of these mass…
Old, Rich, and Eccentric: Two Jovian Planets Orbiting Evolved Metal-Rich Stars
Kathryn M. G. Peek, John Asher Johnson, Debra A. Fischer +10
We present radial velocity measurements of two stars observed as part of the Lick Subgiants Planet Search and the Keck N2K survey. Variations in the radial velocities of both stars…
The NASA-UC Eta-Earth Program: I. A Super-Earth Orbiting HD 7924
Andrew W. Howard, John A. Johnson, Geoffrey W. Marcy +8
We report the discovery of the first low-mass planet to emerge from the NASA-UC Eta-Earth Program, a super-Earth orbiting the K0 dwarf HD 7924. Keplerian modeling of precise Dopple…