420 citations · 3.5k across the 57 of their papers we have counts for
19 papers · 1 filter
Where are all the Young Stars in Aquila?
L. Prato, E. L. Rice, T. M. Dame
The high Galactic longitude end of the Aquila Rift comprises the large Aquila molecular cloud complex, however, few young stars are known to be located in the area, and only one is…
A Young Planet Search in Visible and IR Light: DN Tau, V836 Tau, and V827 Tau
L. Prato, M. Huerta, C. M. Johns-Krull +3
In searches for low-mass companions to late-type stars, correlation between radial velocity variations and line bisector slope changes indicates contamination by large starspots. T…
The Highly Eccentric Pre-Main Sequence Spectroscopic Binary RX J0529.3+1210
G. N. Mace, L. Prato, L. H. Wasserman +3
The young system RX J0529.3+1210 was initially identified as a single-lined spectroscopic binary. Using high-resolution infrared spectra, acquired with NIRSPEC on Keck II, we measu…
Preliminary Orbit of the Young Binary Haro 1-14c
G. H. Schaefer, M. Simon, L. Prato +1
Using the Keck Interferometer, we spatially resolved the orbit of the pre-main sequence binary, Haro 1-14c, for the first time. We present these interferometric observations along…
Optical interferometric observations of Theta 1 Orionis C from NPOI and implications for the system orbit
J. Patience, R. T. Zavala, L. Prato +5
With the Navy Prototype Optical Interferometer (NPOI), the binary system Theta 1 Orionis C, the most massive member of the Trapezium, was spatially resolved over a time period exte…
XO-3b: A Massive Planet in an Eccentric Orbit Transiting an F5V Star
Christopher M. Johns-Krull, Peter R. McCullough, Christopher J. Burke +13
We report the discovery of a massive (Mpsini = 13.02 +/- 0.64 Mjup; total mass 13.25 +/- 0.64 Mjup), large (1.95 +/- 0.16 Rjup) planet in a transiting, eccentric orbit (e = 0.260 +…
Star Spot Induced Radial Velocity Variability in LkCa 19
Marcos Huerta, Christopher M. Johns-Krull, L. Prato +2
We describe a new radial velocity survey of T Tauri stars and present the first results. Our search is motivated by an interest in detecting massive young planets, as well as inves…
Spectral analysis of high resolution near-infrared spectra of ultra cool dwarfs
Yu. Lyubchik, H. R. A. Jones, Ya. V. Pavlenko +5
We present an analysis of high resolution spectra in the J band of five ultra cool dwarfs from M6 to L0. A new ab initio water vapour line list and existing line lists of FeH and C…
A New Population of Young Brown Dwarfs
Kelle L. Cruz, J. Davy Kirkpatrick, Adam J. Burgasser +5
We report the discovery of a population of late-M and L field dwarfs with unusual optical and near-infrared spectral features that we attribute to low gravity -- likely uncommonly…
Spitzer/IRAC and JHKs Observations of h & chi Persei: Constraints on Protoplanetary Disk and Massive Cluster Evolution at ~ 10^{7} yr
Thayne Currie, Zoltan Balog, S. J. Kenyon +12
We describe IRAC 3.6-8 mu_m observations and ground-based near-IR JHKs photometry from Mimir and 2MASS of the massive double cluster h & chi Persei complete to J=15.5 (M ~ 1.3 Msun…
A Survey for Young Spectroscopic Binary K7-M4 Stars in Ophiuchus
L. Prato
This paper describes a high-resolution, infrared spectroscopic survey of young, low-mass stars designed to identify and characterize pre-main-sequence spectroscopic binaries. This…
The Double-Lined Spectroscopic Binary Haro 1-14c
M. Simon, L. Prato
We report detection of the low-mass secondary in the spectroscopic binary Haro 1-14c in the Ophiuchus star forming region. The secondary/primary mass ratio is . Wit…
The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics
Adam J. Burgasser, J. Davy Kirkpatrick, Adam Burrows +6
We present the discovery of the first L-type subdwarf, 2MASS J05325346+8246465. This object exhibits enhanced collision-induced H absorption, resulting in blue NIR colors ($J-K…
Component Masses of the Young Spectroscopic Binary UZ Tau E
L. Prato, M. Simon, T. Mazeh +2
We report estimates of the masses of the component stars in the pre-main-sequence spectroscopic binary UZ Tau E. These results come from the combination of our measurements of the…
Stellar Companions to Stars with Planets
J. Patience, R. J. White, A. M. Ghez +15
A combination of high-resolution and wide-field imaging reveals two binary stars and one triple star system among the sample of the first 11 stars with planets detected by radial v…
IR Detection of Low-Mass Secondaries in Spectroscopic Binaries
T. Mazeh, L. Prato, M. Simon +3
This paper outlines an infrared spectroscopic technique to measure the radial velocities of faint secondaries in known single-lined binaries. The paper presents our H-band observat…
Near-Infrared Spectroscopy of Brown Dwarfs: Methane and the Transition between the L and T Spectral Types
Ian S. McLean, L. Prato, Sungsoo S. Kim +3
We report the possible identification of weak methane spectral features in the near-infrared K band in two late L dwarfs, DENIS 0205-11 (L7) and 2MASS 1523+30 (L8). New, high signa…
A Dynamical Mass Constraint for Pre-Main-Sequence Evolutionary Tracks: The Binary NTT 045251+3016
A. T. Steffen, R. D. Mathieu, M. G. Lattanzi +6
We present an astrometric/spectroscopic orbital solution for the pre-main-sequence binary NTT 045251+3016. Our measurements for the primary and secondary masses are 1.45 +/- 0.19 M…
Evidence for Extinction and Accretion Variability in T Tau S
Tracy Beck, L. Prato, M. Simon
We present angularly resolved spectra of T Tau North and South in the 3 micron water ice feature and K-band. Most of the water ice absorption lies along the line of sight toward T…