Publications (92)
TOI-4641b: An Aligned Warm Jupiter Orbiting a Bright (V=7.5) Rapidly Rotating F-star
Allyson Bieryla, George Zhou, Juliana GarcÃa-MejÃa +25
We report the discovery of TOI-4641b, a warm Jupiter transiting a rapidly rotating F-type star with a stellar effective temperature of 6560 K. The planet has a radius of 0.73 $R_{J…
TESS Spots a Super-Puff: The Remarkably Low Density of TOI-1420b
Stephanie Yoshida, Shreyas Vissapragada, David W. Latham +51
We present the discovery of TOI-1420b, an exceptionally low-density ( g cm) transiting planet in a day orbit around a late G dwarf star. Using tr…
Qatar-2: A K dwarf orbited by a transiting hot Jupiter and a more massive companion in an outer orbit
Marta L. Bryan, Khalid A. Alsubai, David W. Latham +23
We report the discovery and initial characterization of Qatar-2b, a hot Jupiter transiting a V = 13.3 mag K dwarf in a circular orbit with a short period, P_ b = 1.34 days. The mas…
Optical Spectra of 73 Stripped-Envelope Core-Collapse Supernovae
Maryam Modjaz, Stephane Blondin, Robert P. Kirshner +10
We present 645 optical spectra of 73 supernovae (SNe) of Types IIb, Ib, Ic, and broad-lined Ic. All of these types are attributed to the core collapse of massive stars, with varyin…
A Compact Multi-Planet System With A Significantly Misaligned Ultra Short Period Planet
Joseph E. Rodriguez, Juliette C. Becker, Jason D. Eastman +20
We report the discovery of a compact multi-planet system orbiting the relatively nearby (78pc) and bright () K-star, K2-266 (EPIC248435473). We identify up to six possible p…
EPIC 246851721 b: A Tropical Jupiter Transiting a Rapidly Rotating Star in a Well-Aligned Orbit
Liang Yu, George Zhou, Joseph E. Rodriguez +15
We report the discovery of EPIC 246851721 b, a "tropical" Jupiter in a 6.18-day orbit around the bright () star EPIC 246851721 (TYC 1283-739-1). We present a detailed ana…
Searching for Exoplanets Born Outside the Milky Way: VOYAGERS Survey Design
Robert Aloisi, Andrew Vanderburg, Melinda Soares-Furtado +44
Observations over the past few decades have found that planets are common around nearby stars in our Galaxy, but little is known about planets that formed outside the Milky Way. We…
Zodiacal Exoplanets in Time (ZEIT) VI: a three-planet system in the Hyades cluster including an Earth-sized planet
Andrew W. Mann, Andrew Vanderburg, Aaron C. Rizzuto +11
Planets in young clusters are powerful probes of the evolution of planetary systems. Here we report the discovery of three planets transiting K2-136 (EPIC 247589423), a late K dwar…
KELT-3b: A Hot Jupiter Transiting a V=9.8 Late-F Star
Joshua Pepper, Robert J. Siverd, Thomas G. Beatty +31
We report the discovery of KELT-3b, a moderately inflated transiting hot Jupiter with a mass of 1.477 (-0.067, +0.066) M_J, and radius of 1.345 +/- 0.072 R_J, with an orbital perio…
KELT-22Ab: A Massive Hot Jupiter Transiting a Near Solar Twin
Jonathan Labadie-Bartz, Joseph E. Rodriguez, Keivan G. Stassun +58
We present the discovery of KELT-22Ab, a hot Jupiter from the KELT-South survey. KELT-22Ab transits the moderately bright () Sun-like G2V star TYC 7518-468-1. The plane…
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…
Spinning up a Daze: TESS Uncovers a Hot Jupiter orbiting the Rapid-Rotator TOI-778
Jake Clark, Brett Addison, Jack Okumura +68
NASA's Transiting Exoplanet Survey Satellite (TESS) mission, has been uncovering a growing number of exoplanets orbiting nearby, bright stars. Most exoplanets that have been discov…
SN~2012cg: Evidence for Interaction Between a Normal Type Ia Supernova and a Non-Degenerate Binary Companion
G. H. Marion, Peter J. Brown, Jozsef Vinkó +26
We report evidence for excess blue light from the Type Ia supernova SN 2012cg at fifteen and sixteen days before maximum B-band brightness. The emission is consistent with predicti…
KELT-4Ab: An inflated Hot Jupiter transiting the bright (V~10) component of a hierarchical triple
Jason D. Eastman, Thomas G. Beatty, Robert J. Siverd +42
We report the discovery of KELT-4Ab, an inflated, transiting Hot Jupiter orbiting the brightest component of a hierarchical triple stellar system. The host star is an F star with $…
BD-14 3065b (TOI-4987b): from giant planet to brown dwarf: evidence for deuterium burning in old age?
Ján Šubjak, David W. Latham, Samuel N. Quinn +15
The present study reports the confirmation of BD-14 3065b, a transiting planet/brown dwarf in a triple-star system, with a mass near the deuterium burning boundary. BD-14 3065b has…
Diving Beneath the Sea of Stellar Activity: Chromatic Radial Velocities of the Young AU Mic Planetary System
Bryson Cale, Michael Reefe, Peter Plavchan +52
We present updated radial-velocity (RV) analyses of the AU Mic system. AU Mic is a young (22 Myr) early M dwarf known to host two transiting planets - days, $R_{b}=…
OrCAS: Origins, Compositions, and Atmospheres of Sub-neptunes. I. Survey Definition
Ian J. M. Crossfield, Alex S. Polanski, Paul Robertson +61
Sub-Neptunes - volatile-rich exoplanets smaller than Neptune - are intrinsically the most common type of planet known. However, the formation and nature of these objects, as well a…
TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full Frame Images
Joseph E. Rodriguez, Samuel N. Quinn, George Zhou +115
We present the discovery and characterization of five hot and warm Jupiters -- TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 352…
KELT-12b: A Day, Highly Inflated Hot Jupiter Transiting a Mildly Evolved Hot Star
Daniel J. Stevens, Karen A. Collins, B. Scott Gaudi +46
We report the discovery of KELT-12b, a highly inflated Jupiter-mass planet transiting a mildly evolved host star. We identified the initial transit signal in the KELT-North survey…
CfA4: Light Curves for 94 Type Ia Supernovae
Malcolm Hicken, Peter Challis, Robert P. Kirshner +36
We present multi-band optical photometry of 94 spectroscopically-confirmed Type Ia supernovae (SN Ia) in the redshift range 0.0055 to 0.073, obtained between 2006 and 2011. There a…
KELT-24b: A 5M Planet on a 5.6 day Well-Aligned Orbit around the Young V=8.3 F-star HD 93148
Joseph E. Rodriguez, Jason D. Eastman, George Zhou +76
We present the discovery of KELT-24 b, a massive hot Jupiter orbiting a bright (V=8.3 mag, K=7.2 mag) young F-star with a period of 5.6 days. The host star, KELT-24 (HD 93148), has…
The CIDA Variability Survey of Orion OB1 II: demographics of the young, low-mass stellar populations
Cesar Briceno, Nuria Calvet, Jesus Hernandez +11
We present results of our large scale, optical, multi-epoch photometric survey of ~180 square degrees across the Orion OB1 association, complemented with extensive follow up spectr…
A long-period substellar object exhibiting a single transit in Kepler
Samuel N. Quinn, Saul Rappaport, Andrew Vanderburg +11
We report the detection of a single transit-like signal in the Kepler data of the slightly evolved F star KIC4918810. The transit duration is ~45 hours, and while the orbital perio…
Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M Dwarf System at 6.9 Parsecs
Jennifer G. Winters, Amber A. Medina, Jonathan M. Irwin +40
We present the discovery from TESS data of LTT 1445Ab. At a distance of 6.9 parsecs, it is the second nearest transiting exoplanet system found to date, and the closest one known f…
A Possible Alignment Between the Orbits of Planetary Systems and their Visual Binary Companions
Sam Christian, Andrew Vanderburg, Juliette Becker +111
Astronomers do not have a complete picture of the effects of wide-binary companions (semimajor axes greater than 100 AU) on the formation and evolution of exoplanets. We investigat…
TOI 564 b and TOI 905 b: Grazing and Fully Transiting Hot Jupiters Discovered by TESS
Allen B. Davis, Songhu Wang, Matias Jones +46
We report the discovery and confirmation of two new hot Jupiters discovered by the Transiting Exoplanet Survey Satellite (TESS): TOI 564 b and TOI 905 b. The transits of these two…
Zodiacal Exoplanets in Time (ZEIT) VII: A Temperate Candidate Super-Earth in the Hyades Cluster
Andrew Vanderburg, Andrew W. Mann, Aaron Rizzuto +15
Transiting exoplanets in young open clusters present opportunities to study how exoplanets evolve over their lifetimes. Recently, significant progress detecting transiting planets…
Type IIb Supernova SN 2011dh: Spectra and Photometry from the Ultraviolet to the Near-Infrared
G. H. "Howie'' Marion, Jozsef Vinko, Robert P. Kirshner +26
We report spectroscopic and photometric observations of the Type IIb SN 2011dh obtained between 4 and 34 days after the estimated date of explosion (May 31.5 UT). The data cover a…
The 2MASS Redshift Survey - Description and Data Release
John P. Huchra, Lucas M. Macri, Karen L. Masters +17
We present the results of the 2MASS Redshift Survey (2MRS), a ten-year project to map the full three-dimensional distribution of galaxies in the nearby Universe. The 2 Micron All-S…
The 2MASS Redshift Survey in the Zone of Avoidance
Lucas Macri, Renee Kraan-Korteweg, Trystan Lambert +7
The 2MASS Redshift Survey was started two decades ago with the goal of mapping the three-dimensional distribution of an all-sky flux-limited (Ks<11.75 mag) sample of ~45,000 galaxi…
Scaling K2. V. Statistical Validation of 60 New Exoplanets From K2 Campaigns 2-18
Jessie L. Christiansen, Sakhee Bhure, Jon K. Zink +39
The NASA K2 mission, salvaged from the hardware failures of the Kepler telescope, has continued Kepler's planet-hunting success. It has revealed nearly 500 transiting planets aroun…
Identifying Exoplanets with Deep Learning II: Two New Super-Earths Uncovered by a Neural Network in K2 Data
Anne Dattilo, Andrew Vanderburg, Christopher J. Shallue +10
For years, scientists have used data from NASA's Kepler Space Telescope to look for and discover thousands of transiting exoplanets. In its extended K2 mission, Kepler observed sta…
An Extreme-mass Ratio, Short-period Eclipsing Binary Consisting of a B Dwarf Primary and a Pre-main Sequence M Star Companion Discovered by KELT
Daniel J. Stevens, George Zhou, Marshall C. Johnson +16
We present the discovery of \thisstar\ (HD 58730), a very low mass ratio () eclipsing binary (EB) identified by the Kilodegree Extremely Little Teles…
The warm Neptunes around HD 106315 have low stellar obliquities
George Zhou, Joseph E. Rodriguez, Andrew Vanderburg +8
We present the obliquity of the warm Neptune HD 106315c measured via a series of spectroscopic transit observations. HD 106315c is a 4.4 REarth warm Neptune orbiting a moderately r…
TOI-503: The first known brown dwarf-Am star binary from the TESS mission
Ján Šubjak, Rishikesh Sharma, Theron W. Carmichael +76
We report the discovery of an intermediate-mass transiting brown dwarf, TOI-503b, from the TESS mission. TOI-503b is the first brown dwarf discovered by TESS and orbits a metallic-…
The Mysterious Dimmings of the T Tauri Star V1334 Tau
Joseph E. Rodriguez, George Zhou, Phillip A. Cargile +35
We present the discovery of two extended 0.12 mag dimming events of the weak-lined T-Tauri star V1334. The start of the first event was missed but came to an end in late 2003…
275 Candidates and 149 Validated Planets Orbiting Bright Stars in K2 Campaigns 0-10
Andrew W. Mayo, Andrew Vanderburg, David W. Latham +25
Since 2014, NASA's K2 mission has observed large portions of the ecliptic plane in search of transiting planets and has detected hundreds of planet candidates. With observations pl…
The PDS 110 observing campaign - photometric and spectroscopic observations reveal eclipses are aperiodic
Hugh P. Osborn, Matthew Kenworthy, Joseph E. Rodriguez +71
PDS 110 is a young disk-hosting star in the Orion OB1A association. Two dimming events of similar depth and duration were seen in 2008 (WASP) and 2011 (KELT), consistent with an ob…
KELT-6b: A P~7.9 d Hot Saturn Transiting a Metal-Poor Star with a Long-Period Companion
Karen A. Collins, Jason D. Eastman, Thomas G. Beatty +39
We report the discovery of KELT-6b, a mildly-inflated Saturn-mass planet transiting a metal-poor host. The initial transit signal was identified in KELT-North survey data, and the…
KELT-1b: A Strongly Irradiated, Highly Inflated, Short Period, 27 Jupiter-mass Companion Transiting a mid-F Star
Robert J. Siverd, Thomas G. Beatty, Joshua Pepper +29
We present the discovery of KELT-1b, the first transiting low-mass companion from the wide-field Kilodegree Extremely Little Telescope-North (KELT-North) survey. The V=10.7 primary…
Two young planetary systems around field stars with ages between 20-320 Myr from TESS
George Zhou, Samuel N. Quinn, Jonathan Irwin +46
Planets around young stars trace the early evolution of planetary systems. We report the discovery and validation of two planetary systems with ages Myr from observa…
KELT-20b: A giant planet with a period of P~ 3.5 days transiting the V~ 7.6 early A star HD 185603
Michael B. Lund, Joseph E. Rodriguez, George Zhou +46
We report the discovery of KELT-20b, a hot Jupiter transiting a V~7.6 early A star with an orbital period of P~3.47 days. We identified the initial transit signal in KELT-North sur…
The H emission of nearby M dwarfs and its relation to stellar rotation
Elisabeth R. Newton, Jonathan Irwin, David Charbonneau +3
The high-energy emission from low-mass stars is mediated by the magnetic dynamo. Although the mechanisms by which fully convective stars generate large-scale magnetic fields are no…
A Study of the Type II-Plateau Supernova 1999gi, and the Distance to its Host Galaxy, NGC 3184
Douglas C. Leonard, Alexei V. Filippenko, Weidong Li +10
We present optical spectra and photometry sampling the first six months after discovery of supernova (SN) 1999gi in NGC 3184. SN 1999gi is shown to be a Type II-plateau event with…
An Aligned Orbit for the Young Planet V1298 Tau b
Marshall C. Johnson, Trevor J. David, Erik A. Petigura +22
The alignment of planetary orbits with respect to the stellar rotation preserves information on their dynamical histories. Measuring this angle for young planets help illuminate th…
Radial and Rotational Velocities of a Volume-Complete Sample of M Dwarfs with Masses 0.1-0.3 Msun within 15 parsecs
Jennifer G. Winters, Emily K. Pass, David Charbonneau +7
We present the results from a five-year campaign to gather multi-epoch, high-resolution spectra of a volume-complete sample of 413 M dwarfs with masses 10-30% that of the Sun that…
The CIDA Variability Survey of Orion OB1. I: the low-mass population of Ori OB 1a and 1b
Cesar Briceno, Nuria Calvet, Jesus Hernandez +4
We present results of a large scale, multi-epoch optical survey of the Ori OB1 association, carried out with the QuEST camera at the Venezuela National Astronomical Observatory. We…
The Mass Dependence of Hα Emission and Stellar Spindown for Fully Convective M Dwarfs
Emily K. Pass, David Charbonneau, David W. Latham +4
Fully convective M dwarfs typically remain rapidly rotating and magnetically active for billions of years, followed by an abrupt and mass-dependent transition to slow rotation and…
A Hot Saturn Near (but unassociated with) the Open Cluster NGC 1817
Rayna Rampalli, Andrew Vanderburg, Allyson Bieryla +14
We report on the discovery of a hot Saturn-sized planet (9.916 +/- 0.985 R_earth) around a late F star, EPIC 246865365, observed in Campaign 13 of the K2 mission. We began studying…
A TESS Dress Rehearsal: Planetary Candidates and Variables from K2 Campaign 17
Ian J. M. Crossfield, Natalia Guerrero, Trevor David +38
We produce light curves for all ~34,000 targets observed with K2 in Campaign 17 (C17), identifying 34 planet candidates, 184 eclipsing binaries, and 222 other periodic variables. T…
The KELT Follow-Up Network and Transit False Positive Catalog: Pre-vetted False Positives for TESS
Karen A. Collins, Kevin I. Collins, Joshua Pepper +108
The Kilodegree Extremely Little Telescope (KELT) project has been conducting a photometric survey for transiting planets orbiting bright stars for over ten years. The KELT images h…
Optical Spectroscopy of Embedded Young Stars in the Taurus-Auriga Molecular Cloud
Scott J. Kenyon, David I. Brown, Chris Tout +1
This paper describes the first optical spectroscopic survey of class I sources (also known as embedded sources and protostars) in the Taurus-Auriga dark cloud. We detect 10 of the…
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…
Type II Supernova Light Curves and Spectra From the CfA
Malcolm Hicken, Andrew S. Friedman, Stephane Blondin +8
We present multiband photometry of 60 spectroscopically-confirmed supernovae (SN): 39 SN II/IIP, 19 IIn, one IIb and one that was originally classified as a IIn but later as a Ibn.…
Kepler-432: a red giant interacting with one of its two long period giant planets
Samuel N. Quinn, Timothy R. White, David W. Latham +28
We report the discovery of Kepler-432b, a giant planet () transiting an evolved star $(M_\star =…
TOI-481 b & TOI-892 b: Two long period hot Jupiters from the Transiting Exoplanet Survey Satellite
Rafael Brahm, Louise D. Nielsen, Robert A. Wittenmyer +75
We present the discovery of two new 10-day period giant planets from the Transiting Exoplanet Survey Satellite () mission, whose masses were precisely determined using a wide…
Discovery and Precise Characterization by the MEarth Project of LP 661-13, an Eclipsing Binary Consisting of Two Fully Convective Low-mass Stars
Jason A Dittmann, Jonathan M Irwin, David Charbonneau +7
We report the detection of stellar eclipses in the LP 661-13 system. We present the discovery and characterization of this system, including high resolution spectroscopic radial ve…
An Eccentric Sub-Neptune Moving Into the Evaporation Desert
Sydney Jenkins, Andrew Vanderburg, Ritika Sethi +31
Though missions such as Kepler, K2, and TESS have discovered 2,000 sub-Neptune and Neptunian planets, there is a dearth of such planets at close-in (P3 days) orbits. T…
A decade of radial-velocity monitoring of Vega and new limits on the presence of planets
Spencer A. Hurt, Samuel N. Quinn, David W. Latham +7
We present an analysis of 1524 spectra of Vega spanning 10 years, in which we search for periodic radial velocity variations. A signal with a periodicity of 0.676 days and a semi-a…
An Eccentric Massive Jupiter Orbiting a Sub-Giant on a 9.5 Day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images
Joseph E. Rodriguez, Samuel N. Quinn, Chelsea X. Huang +71
We report the discovery of TOI-172 b from the Transiting Exoplanet Survey Satellite (TESS) mission, a massive hot Jupiter transiting a slightly evolved G-star with a 9.48-day orbit…
Kepler's Last Planet Discoveries: Two New Planets and One Single-Transit Candidate from K2 Campaign 19
Elyse Incha, Andrew Vanderburg, Tom Jacobs +9
The Kepler space telescope was responsible for the discovery of over 2,700 confirmed exoplanets, more than half of the total number of exoplanets known today. These discoveries too…
HectoMAP and Horizon Run 4: Dense Structures and Voids in the Real and Simulated Universe
Ho Seong Hwang, Margaret J. Geller, Changbom Park +10
HectoMAP is a dense redshift survey of red galaxies covering a 53 strip of the northern sky. HectoMAP is 97\% complete for galaxies with , , and $(r-i)…
Four new eclipsing mid M-dwarf systems from the New Luyten Two Tenths catalog
Jonathan M. Irwin, David Charbonneau, Gilbert A. Esquerdo +7
Using data from the MEarth-North and MEarth-South transit surveys, we present the detection of eclipses in four mid M-dwarf systems: LP 107-25, LP 261-75, LP 796-24, and LP 991-15.…
Multi-epoch detections of the extended atmosphere and transmission spectra of KELT-9b with a 1.5 m telescope
Nataliea Lowson, George Zhou, Duncan J. Wright +10
Irradiated Jovian atmospheres are complex, dynamic, and can undergo temporal variations due to the close proximity of their parent stars. Of the Jovian planets that have been catal…
First radial velocity results from the MINiature Exoplanet Radial Velocity Array (MINERVA)
Maurice L. Wilson, Jason D. Eastman, Matthew A. Cornachione +52
The MINiature Exoplanet Radial Velocity Array (MINERVA) is a dedicated observatory of four 0.7m robotic telescopes fiber-fed to a KiwiSpec spectrograph. The MINERVA mission is to d…
Two warm, low-density sub-Jovian planets orbiting bright stars in K2 campaigns 13 and 14
Liang Yu, Joseph E. Rodriguez, Jason D. Eastman +25
We report the discovery of two planets transiting the bright stars HD 89345 (EPIC 248777106, , ) in K2 Campaign 14 and HD 286123 (EPIC 247098361, , $K=8.…
The Updated Zwicky Catalog (UZC)
Emilio E. Falco, Michael J. Kurtz, Margaret J. Geller +6
The Zwicky Catalog of galaxies (ZC), with m_Zw<=15.5mag, has been the basis for the Center for Astrophysics (CfA) redshift surveys. To date, analyses of the ZC and redshift surveys…
The K2 & TESS Synergy II: Revisiting 26 systems in the TESS Primary Mission
Erica Thygesen, Jessica A. Ranshaw, Joseph E. Rodriguez +16
The legacy of NASA's K2 mission has provided hundreds of transiting exoplanets that can be revisited by new and future facilities for further characterization, with a particular fo…
KELT-2Ab: A Hot Jupiter Transiting the Bright (V=8.77) Primary Star of a Binary System
Thomas G. Beatty, Joshua Pepper, Robert J. Siverd +28
We report the discovery of KELT-2Ab, a hot Jupiter transiting the bright (V=8.77) primary star of the HD 42176 binary system. The host is a slightly evolved late F-star likely in t…
Spectroscopic Orbits of Eleven Nearby, Mid-to-Late M Dwarf Binaries
Jennifer G. Winters, Jonathan M. Irwin, David Charbonneau +7
We present the spectroscopic orbits of eleven nearby, mid-to-late M dwarf binary systems in a variety of configurations: two single-lined binaries (SB1s), seven double-lined binari…
LHS 1610A: A Nearby Mid-M Dwarf with a Companion That is Likely A Brown Dwarf
Jennifer G. Winters, Jonathan Irwin, Elisabeth R. Newton +7
We present the spectroscopic orbit of LHS 1610A, a newly discovered single-lined spectroscopic binary with a trigonometric distance placing it at 9.9 pm 0.2 pc. We obtained spectra…
Five Planets Transiting a Ninth Magnitude Star
Andrew Vanderburg, Juliette C. Becker, Martti H. Kristiansen +15
The Kepler mission has revealed a great diversity of planetary systems and architectures, but most of the planets discovered by Kepler orbit faint stars. Using new data from the K2…
SN 2002cx: The Most Peculiar Known Type Ia Supernova
Weidong Li, Alexei V. Filippenko, Ryan Chornock +12
We present photometric and spectroscopic observations of supernova (SN) 2002cx, which reveal it to be unique among all observed type Ia supernovae (SNe Ia). SN 2002cx exhibits a SN…
Spin orbit alignment for KELT-7b and HAT-P-56b via Doppler tomography with TRES
George Zhou, David W. Latham, Allyson Bieryla +5
We present Doppler tomographic analyses for the spectroscopic transits of KELT-7b and HAT-P-56b, two hot-Jupiters orbiting rapidly rotating F-dwarf host stars. These include analys…
Two Small Planets Transiting HD 3167
Andrew Vanderburg, Allyson Bieryla, Dmitry A. Duev +10
We report the discovery of two super-Earth-sized planets transiting the bright (V = 8.94, K = 7.07) nearby late G-dwarf HD 3167, using data collected by the K2 mission. The inner p…
Mid-to-Late M Dwarfs Lack Jupiter Analogs
Emily K Pass, Jennifer G Winters, David Charbonneau +6
Cold Jovian planets play an important role in sculpting the dynamical environment in which inner terrestrial planets form. The core accretion model predicts that giant planets cann…
Three statistically validated K2 transiting warm Jupiter exoplanets confirmed as low-mass stars
Avi Shporer, George Zhou, Andrew Vanderburg +11
We have identified three K2 transiting star-planet systems, K2-51 (EPIC 202900527), K2-67 (EPIC 206155547), and K2-76 (EPIC 206432863), as stellar binaries with low-mass stellar se…
KELT-19Ab: A P~4.6 Day Hot Jupiter Transiting a Likely Am Star with a Distant Stellar Companion
Robert J. Siverd, Karen A. Collins, George Zhou +51
We present the discovery of the giant planet KELT-19Ab, which transits the moderately bright A8V star TYC 764-1494-1 with an orbital period of 4.61 days. We…
Another Shipment of Six Short-Period Giant Planets from TESS
Joseph E. Rodriguez, Samuel N. Quinn, Andrew Vanderburg +119
We present the discovery and characterization of six short-period, transiting giant planets from NASA's Transiting Exoplanet Survey Satellite (TESS) -- TOI-1811 (TIC 376524552), TO…
Planetary Candidates from the First Year of the K2 Mission
Andrew Vanderburg, David W. Latham, Lars A. Buchhave +6
The Kepler Space Telescope is currently searching for planets transiting stars along the ecliptic plane as part of its extended K2 mission. We processed the publicly released data…
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…
Discovery of a Candidate Black Hole - Giant Star Binary System in the Galactic Field
Todd A. Thompson, Christopher S. Kochanek, Krzysztof Z. Stanek +14
We report the discovery of the first likely black hole in a non-interacting binary system with a field red giant. By combining radial velocity measurements from the Apache Point Ob…
KELT-17b: A hot-Jupiter transiting an A-star in a misaligned orbit detected with Doppler tomography
George Zhou, Joseph E. Rodriguez, Karen A. Collins +45
We present the discovery of a hot-Jupiter transiting the V=9.23 mag main-sequence A-star KELT-17 (BD+14 1881). KELT-17b is a 1.31 -0.29/+0.28 Mj, 1.525 -0.060/+0.065 Rj hot-Jupiter…
The Stellar Population of h and chi Persei: Cluster Properties, Membership, and the Intrinsic Colors and Temperatures of Stars
Thayne Currie, Jesus Hernandez, Jonathan Irwin +6
(Abridged) From photometric observations of 47,000 stars and spectroscopy of 11,000 stars, we describe the first extensive study of the stellar population of the famo…
Herbig Ae/Be Stars in nearby OB associations
Jesus Hernandez, Nuria Calvet, Lee Hartmann +4
We have carried out a study of the early type stars in nearby OB associations spanning an age range of 3 to 16 Myr, with the aim of determining the fraction of stars which b…
TOI-2109b: An Ultrahot Gas Giant on a 16 hr Orbit
Ian Wong, Avi Shporer, George Zhou +56
We report the discovery of an ultrahot Jupiter with an extremely short orbital period of days (16 hr). The plane…
TIC 454140642: A Compact, Coplanar, Quadruple-lined Quadruple Star System Consisting of Two Eclipsing Binaries
Veselin B. Kostov, Brian P. Powell, Guillermo Torres +30
We report the discovery of a compact, coplanar, quadruply-lined, eclipsing quadruple star system from TESS data, TIC 454140642, also known as TYC 0074-01254-1. The target was first…
HIP 61637 b: a TESS Brown Dwarf in a Near-circular Orbit around a Massive A-type Star
Nino Ephremidze, David W. Latham, Perry Berlind +8
We present the characterization of HIP 61637 b (TOI-5401 b), a brown dwarf discovered by TESS to transit an A-type star. HIP 61637 is the most massive and the brightest star known…
TESS Hunt for Young and Maturing Exoplanets (THYME) III: a two-planet system in the 400 Myr Ursa Major Group
Andrew W. Mann, Marshall C. Johnson, Andrew Vanderburg +51
Exoplanets can evolve significantly between birth and maturity, as their atmospheres, orbits, and structures are shaped by their environment. Young planets (1 Gyr) offer an oppo…
Absence of a Correlation between White Dwarf Planetary Accretion and Primordial Stellar Metallicity
Sydney Jenkins, Andrew Vanderburg, Allyson Bieryla +8
Over a quarter of white dwarfs have photospheric metal pollution, which is evidence for recent accretion of exoplanetary material. While a wide range of mechanisms have been propos…
KELT-18b: Puffy Planet, Hot Host, Probably Perturbed
Kim K. McLeod, Joseph E. Rodriguez, Ryan J. Oelkers +53
We report the discovery of KELT-18b, a transiting hot Jupiter in a 2.87d orbit around the bright (V=10.1), hot, F4V star BD+60 1538 (TYC 3865-1173-1). We present follow-up photomet…
KELT-7b: A hot Jupiter transiting a bright V=8.54 rapidly rotating F-star
Allyson Bieryla, Karen Collins, Thomas G. Beatty +31
We report the discovery of KELT-7b, a transiting hot Jupiter with a mass of MJ, radius of RJ, and an orbital period of $2.7347749 \pm 0.000…