Publications (63)
Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog With Measured Completeness and Reliability Based on Data Release 25
Susan E. Thompson, Jeffrey L. Coughlin, Kelsey Hoffman +58
We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching four years of Kepler time series photometry (Data Release 25, Q1-Q17). The catalo…
Transit Timing Observations from Kepler: II. Confirmation of Two Multiplanet Systems via a Non-parametric Correlation Analysis
Eric B. Ford, Daniel C. Fabrycky, Jason H. Steffen +48
We present a new method for confirming transiting planets based on the combination of transit timingn variations (TTVs) and dynamical stability. Correlated TTVs provide evidence th…
Kepler-47: A Transiting Circumbinary Multi-Planet System
Jerome A. Orosz, William F. Welsh, Joshua A. Carter +36
We report the detection of Kepler-47, a system consisting of two planets orbiting around an eclipsing pair of stars. The inner and outer planets have radii 3.0 and 4.6 times that o…
Detection of Potential Transit Signals in Sixteen Quarters of Kepler Mission Data
Peter Tenenbaum, Jon M. Jenkins, Shawn Seader +25
We present the results of a search for potential transit signals in four years of photometry data acquired by the Kepler Mission. The targets of the search include 111,800 stars wh…
The K2 Mission: Characterization and Early results
Steve B. Howell, Charlie Sobeck, Michael Haas +16
The K2 mission will make use of the Kepler spacecraft and its assets to expand upon Kepler's groundbreaking discoveries in the fields of exoplanets and astrophysics through new and…
Spin-Orbit Alignment for the Circumbinary Planet Host Kepler-16A
Joshua N. Winn, Simon Albrecht, John Asher Johnson +31
Kepler-16 is an eccentric low-mass eclipsing binary with a circumbinary transiting planet. Here we investigate the angular momentum of the primary star, based on Kepler photometry…
Two Earth-sized planets orbiting Kepler-20
Francois Fressin, Guillermo Torres, Jason F. Rowe +33
Since the discovery of the first extrasolar giant planets around Sun-like stars, evolving observational capabilities have brought us closer to the detection of true Earth analogues…
A sub-Mercury-sized exoplanet
Thomas Barclay, Jason F. Rowe, Jack J. Lissauer +55
Since the discovery of the first exoplanet we have known that other planetary systems can look quite unlike our own. However, until recently we have only been able to probe the upp…
Architecture of Kepler's Multi-transiting Systems: II. New investigations with twice as many candidates
Daniel C. Fabrycky, Jack J. Lissauer, Darin Ragozzine +16
We report on the orbital architectures of Kepler systems having multiple planet candidates identified in the analysis of data from the first six quarters of Kepler data and reporte…
Continuous `stunted' outbursts detected from the Cataclysmic Variable KIC 9202990 using Kepler data
Gavin Ramsay, Pasi Hakala, Matt A Wood +4
Based on early Kepler data, Ostensen et al. (2010) found that KIC 9202990 showed a 4 hr and a two-week photometric period. They suggested the 4 hr period was a signature of an orbi…
A Class of Eccentric Binaries with Dynamic Tidal Distortions Discovered with Kepler
Susan E. Thompson, Mark Everett, Fergal Mullally +10
We have discovered a class of eccentric binary systems within the Kepler data archive that have dynamic tidal distortions and tidally-induced pulsations. Each has a uniquely shaped…
A super-Earth-sized planet orbiting in or near the habitable zone around Sun-like star
Thomas Barclay, Christopher J. Burke, Steve B. Howell +28
We present the discovery of a super-earth-sized planet in or near the habitable zone of a sun-like star. The host is Kepler-69, a 13.7 mag G4V-type star. We detect two periodic set…
The Kepler-19 System: A Transiting 2.2 R_Earth Planet and a Second Planet Detected via Transit Timing Variations
Sarah Ballard, Daniel Fabrycky, Francois Fressin +28
We present the discovery of the Kepler-19 planetary system, which we first identified from a 9.3-day periodic transit signal in the Kepler photometry. From high-resolution spectros…
The Neptune-Sized Circumbinary Planet Kepler-38b
Jerome A. Orosz, William F. Welsh, Joshua A. Carter +28
We discuss the discovery and characterization of the circumbinary planet Kepler-38b. The stellar binary is single-lined, with a period of 18.8 days, and consists of a moderately ev…
Spectral Analysis of Super Soft X-ray Sources: V4743 Sagittarii
Thomas Rauch, Marina Orio, R. Gonzales-Riestra +1
Half a year after its outburst, the nova V4743 Sgr evolved into the brightest super-soft X-ray source in the sky with a flux maximum around 30A, exhibiting resonance lines of C V,…
Planetary Candidates Observed by Kepler IV: Planet Sample From Q1-Q8 (22 Months)
Christopher J. Burke, Stephen T. Bryson, F. Mullally +37
We provide updates to the Kepler planet candidate sample based upon nearly two years of high-precision photometry (i.e., Q1-Q8). From an initial list of nearly 13,400 Threshold Cro…
The Distribution of Transit Durations for Kepler Planet Candidates and Implications for their Orbital Eccentricities
Althea V. Moorhead, Eric B. Ford, Robert C. Morehead +20
Doppler planet searches have discovered that giant planets follow orbits with a wide range of orbital eccentricities, revolutionizing theories of planet formation. The discovery of…
The hot-Jupiter Kepler-17b: discovery, obliquity from stroboscopic starspots, and atmospheric characterization
Jean-Michel Désert, David Charbonneau, Brice-Olivier Demory +38
This paper reports the discovery and characterization of the transiting hot giant exoplanet Kepler-17b. The planet has an orbital period of 1.486 days, and radial velocity measurem…
The first outburst of the new magnetar candidate SGR 0501+4516
Nanda Rea, GianLuca Israel, Roberto Turolla +17
We report here on the outburst onset and evolution of the new Soft Gamma Repeater SGR 0501+4516. We monitored the new SGR with XMM-Newton starting on 2008 August 23, one day after…
The Future of Astronomical Data Infrastructure: Meeting Report
Michael R. Blanton, Janet D. Evans, Dara Norman +69
The astronomical community is grappling with the increasing volume and complexity of data produced by modern telescopes, due to difficulties in reducing, accessing, analyzing, and…
Precision asteroseismology of the pulsating white dwarf GD 1212 using a two-wheel-controlled Kepler spacecraft
J. J. Hermes, S. Charpinet, Thomas Barclay +14
We present a preliminary analysis of the cool pulsating white dwarf GD 1212, enabled by more than 11.5 days of space-based photometry obtained during an engineering test of the two…
Short duration high amplitude flares detected on the M dwarf star KIC 5474065
Gavin Ramsay, J. Gerry Doyle, Pasi Hakala +4
Using data obtained during the RATS-Kepler project we identified one short duration flare in a 1 hour sequence of ground based photometry of the dwarf star KIC 5474065. Observation…
KOI-54: The Kepler Discovery of Tidally-Excited Pulsations and Brightenings in a Highly Eccentric Binary
William F. Welsh, Jerome A. Orosz, Conny Aerts +27
Kepler observations of the star HD 187091 (KID 8112039, hereafter KOI-54) revealed a remarkable light curve exhibiting sharp periodic brightening events every 41.8 days with a supe…
Masses, Radii, and Orbits of Small Kepler Planets: The Transition from Gaseous to Rocky Planets
Geoffrey W. Marcy, Howard Isaacson, Andrew W. Howard +100
We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7…
Quiescent Superhumps Detected in the Dwarf Nova V344 Lyrae by Kepler
Martin Still, Steve B. Howell, Matt A. Wood +2
The timing capabilities and sensitivity of Kepler, NASA's observatory to find Earth-sized planets within the habitable zone of stars, are well matched to the timescales and amplitu…
The Absolute Magnitudes of Type Ia Supernovae in the Ultraviolet
Peter J. Brown, Peter W. A. Roming, Peter Milne +19
We examine the absolute magnitudes and light-curve shapes of 14 nearby(redshift z = 0.004--0.027) Type Ia supernovae (SNe~Ia) observed in the ultraviolet (UV) with the Swift Ultrav…
Transit Timing Observations from Kepler: III. Confirmation of 4 Multiple Planet Systems by a Fourier-Domain Study of Anti-correlated Transit Timing Variations
Jason H. Steffen, Daniel C. Fabrycky, Eric B. Ford +45
We present a method to confirm the planetary nature of objects in systems with multiple transiting exoplanet candidates. This method involves a Fourier-Domain analysis of the devia…
Kepler-20: A Sun-like Star with Three Sub-Neptune Exoplanets and Two Earth-size Candidates
Thomas N. Gautier, David Charbonneau, Jason F. Rowe +41
We present the discovery of the Kepler-20 planetary system, which we initially identified through the detection of five distinct periodic transit signals in the Kepler light curve…
Discovery and Atmospheric Characterization of Giant Planet Kepler-12b: An Inflated Radius Outlier
Jonathan J. Fortney, Brice-Olivier Demory, Jean-Michel Desert +34
We report the discovery of planet Kepler-12b (KOI-20), which at 1.695\pm0.030 RJ is among the handful of planets with super-inflated radii above 1.65 RJ. Orbiting its slightly evol…
Determining the extragalactic extinction law with SALT
Ido Finkelman, Noah Brosch, Alexei Y. Kniazev +7
We present CCD imaging observations of early-type galaxies with dark lanes obtained with the Southern African Large Telescope (SALT) during its performance-verification phase. We d…
The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
Steve Bryson, Michelle Kunimoto, Ravi K. Kopparapu +79
We present occurrence rates for rocky planets in the habitable zones (HZ) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar prop…
Terrestrial Planet Occurrence Rates for the Kepler GK Dwarf Sample
Christopher J. Burke, Jessie L. Christiansen, F. Mullally +22
We measure planet occurrence rates using the planet candidates discovered by the Q1-Q16 Kepler pipeline search. This study examines planet occurrence rates for the Kepler GK dwarf…
Serendipitous Kepler observations of a background dwarf nova of SU UMa type
Thomas Barclay, Martin Still, Jon M. Jenkins +2
We have discovered a dwarf nova (DN) of type SU UMa in Kepler data which is 7.0 arcsec from the G-type exoplanet survey target KIC 4378554. The DN appears as a background source in…
Planetary Candidates Observed by Kepler, III: Analysis of the First 16 Months of Data
Natalie M. Batalha, Jason F. Rowe, Stephen T. Bryson +69
New transiting planet candidates are identified in sixteen months (May 2009 - September 2010) of data from the Kepler spacecraft. Nearly five thousand periodic transit-like signals…
RATS-Kepler -- a deep high cadence survey of the Kepler field
Gavin Ramsay, Adam Brooks, Pasi Hakala +8
We outline the purpose, strategy and first results of a deep, high cadence, photometric survey of the Kepler field using the Isaac Newton Telescope on La Palma and the MDM 1.3m Tel…
Polarized QPOs from the INTEGRAL polar IGRJ14536-5522 (=Swift J1453.4-5524)
Stephen B. Potter, David A. H. Buckley, Darragh O'Donoghue +10
We report optical spectroscopy and high speed photometry and polarimetry of the INTEGRAL source IGRJ14536-5522 (=Swift J1453.4-5524). The photometry, polarimetry and spectroscopy a…
An Earth-sized Planet in the Habitable Zone of a Cool Star
Elisa V. Quintana, Thomas Barclay, Sean N. Raymond +20
The quest for Earth-like planets represents a major focus of current exoplanet research. While planets that are Earth-sized and smaller have been detected, these planets reside in…
Kepler-22b: A 2.4 Earth-radius Planet in the Habitable Zone of a Sun-like Star
William J. Borucki, David G. Koch, Natalie Batalha +80
A search of the time-series photometry from NASA's Kepler spacecraft reveals a transiting planet candidate orbiting the 11th magnitude G5 dwarf KIC 10593626 with a period of 290 da…
Atmospheric reflection during an anomalous low-state of Hercules X-1
Martin Still, Kieran O'Brien, Keith Horne +6
We present RXTE observations of the eclipsing X-ray binary Hercules X-1 conducted during an anomalous low state. Data reduction reveals a light curve over 2.7 orbital cycles remark…
Alignment of the stellar spin with the orbits of a three-planet system
Roberto Sanchis-Ojeda, Daniel C. Fabrycky, Josh N. Winn +16
The Sun's equator and the planets' orbital planes are nearly aligned, which is presumably a consequence of their formation from a single spinning gaseous disk. For exoplanetary sys…
Confirmation of Hot Jupiter Kepler-41b via Phase Curve Analysis
Elisa V. Quintana, Jason F. Rowe, Thomas Barclay +15
We present high precision photometry of Kepler-41, a giant planet in a 1.86 day orbit around a G6V star that was recently confirmed through radial velocity measurements. We have de…
The First Kepler Mission Planet Confirmed With The Hobby-Eberly Telescope: Kepler-15b, a Hot Jupiter Enriched In Heavy Elements
Michael Endl, Phillip J. MacQueen, William D. Cochran +30
We report the discovery of Kepler-15b, a new transiting exoplanet detected by NASA's Kepler mission. The transit signal with a period of 4.94 days was detected in the quarter 1 (Q1…
Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems
Jason F. Rowe, Stephen T. Bryson, Geoffrey W. Marcy +25
The Kepler mission has discovered over 2500 exoplanet candidates in the first two years of spacecraft data, with approximately 40% of them in candidate multi-planet systems. The hi…
Imaging starspot evolution on Kepler target KIC 5110407 using light curve inversion
Rachael M. Roettenbacher, John D. Monnier, Robert O. Harmon +2
The Kepler target KIC 5110407, a K-type star, shows strong quasi-periodic light curve fluctuations likely arising from the formation and decay of spots on the stellar surface rotat…
Solving the mode identification problem in asteroseismology of F stars observed with Kepler
Timothy R. White, Timothy R. Bedding, Michael Gruberbauer +14
Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler sta…
Detection of Potential Transit Signals in the First Twelve Quarters of Kepler Mission Data
Peter Tenenbaum, Jon M. Jenkins, Shawn Seader +26
We present the results of a search for potential transit signals in the first three years of photometry data acquired by the Kepler Mission. The targets of the search include 112,3…
Spectroscopy of New and Poorly Known Cataclysmic Variables in the Kepler Field
Steve B. Howell, Mark E. Everett, Sally A. Seebode +6
The NASA {\it Kepler} mission has been in science operation since May 2009 and is providing high precision, high cadence light curves of over 150,000 targets. Prior to launch, nine…
Kepler-1649b: An Exo-Venus in the Solar Neighborhood
Isabel Angelo, Jason F. Rowe, Steve B. Howell +8
The Kepler mission has revealed that Earth-sized planets are common, and dozens have been discovered to orbit in or near their host star's habitable zone. A major focus in astronom…
Transit Timing Observations from Kepler: VI. Transit Timing Variation Candidates in the First Seventeen Months from Polynomial Models
Eric B. Ford, Darin Ragozzine, Jason F. Rowe +18
Transit timing variations provide a powerful tool for confirming and characterizing transiting planets, as well as detecting non-transiting planets. We report the results an update…
Ultraviolet Light Curves of Supernovae with Swift Uvot
Peter J. Brown, Stephen T. Holland, Stefan Immler +7
We present ultravioliet (UV) observations of supernovae (SNe) obtained with the UltraViolet/Optical Telescope (UVOT) on board the Swift spacecraft. This is the largest sample of UV…
Kepler Observations of V447 Lyr: An Eclipsing U Gem Cataclysmic Variable
Gavin Ramsay, John K. Cannizzo, Steve B. Howell +4
We present the results of an analysis of data covering 1.5 years of the dwarf nova V447 Lyr. We detect eclipses of the accretion disk by the mass donating secondary star every 3.74…
BOKS 45906: a CV with an orbital period of 56.6 min in the Kepler field?
Gavin Ramsay, Steve B. Howell, Matt A. Wood +6
BOKS 45906 was found to be a blue source in the Burrell-Optical-Kepler-Survey which showed a 3 mag outburst lasting ~5 d. We present the Kepler light curve of this source which cov…
A burst from the direction of UZ Fornacis with XMM-Newton
Martin Still, Koji Mukai
The XMM-Newton pointing towards the magnetic cataclysmic variable UZ For finds the source to be a factor > 10^3 fainter than previous EXOSAT and ROSAT observations. The source was…
Kepler-10c, a 2.2-Earth radius transiting planet in a multiple system
Francois Fressin, Guillermo Torres, Jean-Michel Desert +30
The Kepler Mission has recently announced the discovery of Kepler-10 b, the smallest exoplanet discovered to date and the first rocky planet found by the spacecraft. A second, 45-d…
Planetary Candidates Observed by Kepler VI: Planet Sample from Q1-Q16 (47 Months)
F. Mullally, Jeffrey L. Coughlin, Susan E. Thompson +56
\We present the sixth catalog of Kepler candidate planets based on nearly 4 years of high precision photometry. This catalog builds on the legacy of previous catalogs released by t…
Kepler-16: A Transiting Circumbinary Planet
Laurance R. Doyle, Joshua A. Carter, Daniel C. Fabrycky +46
We report the detection of a planet whose orbit surrounds a pair of low-mass stars. Data from the Kepler spacecraft reveal transits of the planet across both stars, in addition to…
A XMM-Newton observation of Nova LMC 1995, a bright supersoft X-ray source
Marina Orio, Wouter Hartmann, Martin Still +1
Nova LMC 1995, previously detected during 1995-1998 with ROSAT, was observed again as a luminous supersoft X-ray source with XMM-Newton in December of 2000. This nova offers the po…
RXTE Observations of Hercules X-1 During the July 1998 Short-high State
Martin Still, Kieran O'Brien, Keith Horne +5
We present RXTE monitoring of the eclipsing X-ray binary Hercules X-1 conducted over the short-high state of July 1998. This was one of the last major short-high states before the…
X-ray Spectroscopy of the 2006 Outburst of RS Oph
Thomas Nelson, Marina Orio, Joseph P. Cassinelli +3
We present the X-ray grating spectra of the recurrent nova RS Ophiuchi during its 2006 outburst, obtained with the XMM-Newton and Chandra observatories. Two weeks after optical max…
Planetary Candidates Observed by Kepler V: Planet Sample from Q1-Q12 (36 Months)
Jason F. Rowe, Jeffrey L. Coughlin, Victoria Antoci +43
The Kepler mission discovered 2842 exoplanet candidates with 2 years of data. We provide updates to the Kepler planet candidate sample based upon 3 years (Q1-Q12) of data. Through…
GRB 090417B and its Host Galaxy: A Step Towards an Understanding of Optically-Dark Gamma-Ray Bursts
Stephen T. Holland, Boris Sbarufatti, Rongfeng Shen +10
GRB 090417B was an unusually long burst with a T_90 duration of at least 2130 s and a multi-peaked light curve at energies of 15-150 keV. It was optically dark and has been associa…
Transit Timing Observations from Kepler: I. Statistical Analysis of the First Four Months
Eric B. Ford, Jason F. Rowe, Daniel C. Fabrycky +22
The architectures of multiple planet systems can provide valuable constraints on models of planet formation, including orbital migration, and excitation of orbital eccentricities a…
FUSE Observations of a Full Orbit of Hercules X-1: Signatures of Disk, Star, and Wind
Bram Boroson, Saeqa Dil Vrtilek, John C. Raymond +1
We observed an entire 1.7 day orbit of the X-ray binary Hercules X-1 with the Far Ultraviolet Spectroscopic Explorer (FUSE). Changes in the O VI 1032,1037 line profiles through ecl…