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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…
Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
Heeyoung Oh, Tae-Soo Pyo, Kyle F. Kaplan +17
We report a study of the three-dimensional (3D) outflow structure of a 15$\arcsec$ 13$\arcsec$ area around H peak 1 in Orion KL with slit-scan observations (13 slits…
Fluorescent H_2 Emission Lines from the Reflection Nebula NGC 7023 Observed with IGRINS
Huynh Anh N. Le, Soojong Pak, Kyle F. Kaplan +17
We have analyzed the temperature, velocity and density of H2 gas in NGC 7023 with a high-resolution near-infrared spectrum of the northwestern filament of the reflection nebula. By…
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…
Observed Variability at 1um and 4um in the Y0 Brown Dwarf WISEP J173835.52+273258.9
S. K. Leggett, Michael C. Cushing, Kevin K. Hardegree-Ullman +10
We have monitored photometrically the Y0 brown dwarf WISEP J173835.52+273258.9 (W1738) at both near- and mid-infrared wavelengths. This ~1 Gyr-old 400K dwarf is at a distance of 8p…
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…
IGRINS spectroscopy of Class I sources: IRAS 03445+3242 and IRAS 04239+2436
Seokho Lee, Jeong-Eun Lee, Sunkyung Park +4
We have detected molecular and atomic line emission from the hot and warm disks of two Class I sources, IRAS 03445+3242 and IRAS 04239+2436 using the high resolution Immersion GRat…
The AllWISE Motion Survey, Part 2
J. Davy Kirkpatrick, Kendra Kellogg, Adam C. Schneider +17
We use the AllWISE Data Release to continue our search for WISE-detected motions. In this paper, we publish another 27,846 motion objects, bringing the total number to 48,000 when…
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…
The First Detection of Photometric Variability in a Y Dwarf: WISE J140518.39+553421.3
Michael C. Cushing, Kevin K. Hardegree-Ullman, Jesica L. Trucks +8
We present the first detection of photometric variability of a spectroscopically-confirmed Y dwarf. The Infrared Array Camera on board the Spitzer Space Telescope was used to obtai…
The Chemical Compositions of Very Metal-Poor Stars HD 122563 and HD 140283; A View From the Infrared
Melike Afşar, Christopher Sneden, Anna Frebel +11
From high resolution (R = 45,000), high signal-to-noise (S/N > 400) spectra gathered with the Immersion Grating Infrared Spectrograph (IGRINS) in the H and K photometric bands, we…
IGRINS Near-IR High-Resolution Spectroscopy of Multiple Jets around LkH 234
Heeyoung Oh, Tae-Soo Pyo, In-Soo Yuk +18
We present the results of high-resolution near-IR spectroscopy toward the multiple outflows around the Herbig Be star Lk{\Ha} 234 using the Immersion Grating Infrared Spectrograph…