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The Roasting Marshmallows Program with IGRINS on Gemini South I: Composition and Climate of the Ultra Hot Jupiter WASP-18 b
Matteo Brogi, Vanessa Emeka-Okafor, Michael R. Line +19
We present high-resolution dayside thermal emission observations of the exoplanet WASP-18b using IGRINS on Gemini South. We remove stellar and telluric signatures using standard al…
TESS Hunt for Young and Maturing Exoplanets (THYME) VI: an 11 Myr giant planet transiting a very low-mass star in Lower Centaurus Crux
Andrew W. Mann, Mackenna L. Wood, Stephen P. Schmidt +48
Mature super-Earths and sub-Neptunes are predicted to be Jovian radius when younger than 10 Myr. Thus, we expect to find 5-15 planets around young stars even if t…
Obliquity Constraints on the Planetary-mass Companion HD 106906 b
Marta L. Bryan, Eugene Chiang, Caroline V. Morley +2
We constrain the angular momentum architecture of HD 106906, a 13 2 Myr old system in the ScoCen complex composed of a compact central binary, a widely separated planetary-ma…
Discovery of an Edge-on Circumstellar Debris Disk Around BD+45598: a Newly Identifed Member of the Pictoris Moving Group
Sasha Hinkley, Elisabeth C. Matthews, Charlène Lefevre +24
We report the discovery of a circumstellar debris disk viewed nearly edge-on and associated with the young, K1 star BD+45598 using high-contrast imaging at 2.2m obtain…
CO Detected in CI Tau b: Hot Start Implied by Planet Mass and M
Laura Flagg, Christopher M. Johns-Krull, Larissa Nofi +5
We acquired high resolution IR spectra of CI Tau, the host star of one of the few young planet candidates amenable to direct spectroscopic detection. We confirm the planet's existe…
Multi-band high resolution spectroscopy rules out the hot Jupiter BD+20 1790b - First data from the GIARPS Commissioning
I. Carleo, S. Benatti, A. F. Lanza +51
Context. Stellar activity is currently challenging the detection of young planets via the radial velocity (RV) technique. Aims. We attempt to definitively discriminate the nature o…
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…
The Young Substellar Companion ROXs 12 B: Near-Infrared Spectrum, System Architecture, and Spin-Orbit Misalignment
Brendan Bowler, Adam Kraus, Marta Bryan +8
ROXs 12 (2MASS J16262803-2526477) is a young star hosting a directly imaged companion near the deuterium-burning limit. We present a suite of spectroscopic, imaging, and time-serie…
Planets Around Low-Mass Stars (PALMS). VI. Discovery of a Remarkably Red Planetary-Mass Companion to the AB Dor Moving Group Candidate 2MASS J22362452+4751425
Brendan Bowler, Michael Liu, Dimitri Mawet +11
We report the discovery of an extremely red planetary-mass companion to 2MASS J22362452+4751425, a 0.6 late-K dwarf likely belonging to the 120 Myr AB Do…
Zodiacal Exoplanets in Time (ZEIT) IV: seven transiting planets in the Praesepe cluster
Andrew W. Mann, Eric Gaidos, Andrew Vanderburg +6
Open clusters and young stellar associations are attractive sites to search for planets and to test theories of planet formation, migration, and evolution. We present our search fo…
Zodiacal Exoplanets in Time (ZEIT) II. A "Super-Earth" Orbiting a Young K Dwarf in the Pleiades Neighborhood
E. Gaidos, A. W. Mann, A. RIzzuto +13
We describe a "super-Earth"-size () planet transiting an early K-type dwarf star in the Campaign 4 field observed by the K2 mission. The host star, EPIC 2103…
Zodiacal Exoplanets in Time (ZEIT) III: A short-period planet orbiting a pre-main-sequence star in the Upper Scorpius OB Association
Andrew W. Mann, Elisabeth R. Newton, Aaron C. Rizzuto +14
We confirm and characterize a close-in ( = 5.425 days), super-Neptune sized ( Earth radii) planet transiting K2-33 (2MASS J16101473-1919095), a…
Zodiacal Exoplanets In Time (ZEIT) I: A Neptune-sized planet orbiting an M4.5 dwarf in the Hyades Star Cluster
Andrew W. Mann, Eric Gaidos, Gregory N. Mace +8
Studying the properties of young planetary systems can shed light on how the dynamics and structure of planets evolve during their most formative years. Recent K2 observations of n…