@article{392dbe0ab5e44c7dac1dec0e82037db5,
title = "High-resolution survey for planetary companions to young stars in the Taurus molecular cloud",
abstract = "Direct imaging in the infrared at the diffraction limit of large telescopes is a unique probe of the properties of young planetary systems. We survey 55 single class I and class II stars in Taurus in the L' filter using natural and laser guide star adaptive optics and the near-infrared camera (NIRC2) of the Keck II telescope, in order to search for planetary-mass companions. We use both reference star differential imaging and kernel phase techniques, achieving typical 5σ contrasts of ∼6 mag at separations of 0.2 arcsec and ∼8 mag beyond 0.5 arcsec. Although, we do not detect any new faint companions, we constrain the frequency of wide separation massive planets, such as HR 8799 analogues. We find that, assuming hot-start models and a planet distribution with power-law mass and semimajor axis indices of −0.5 and −1, respectively, less than 20 per cent of our target stars host planets with masses >2 MJ at separations >10 au.",
keywords = "Planets, Planets and satellites: detection, Satellites: gaseous planets, Techniques: high angular resolution",
author = "Wallace, \{A. L.\} and J. Kammerer and Ireland, \{M. J.\} and C. Federrath and Kraus, \{A. L.\} and Maddison, \{S. T.\} and A. Rizzuto and Birchall, \{E. K.\} and F. Martinache",
note = "Funding Information: We thank the anonymous referee for their useful comments which greatly improved this study. The data presented herein were obtained at the W. M. Keck Observatory, which is operated as a scientific partnership among the California Institute of Technology, the University of California, and the National Aeronautics and Space Administration. The observatory was made possible by the generous financial support of the W. M. Keck Foundation. ALW would like to thank the Australian Government for their support through the Australian Postgraduate Award Scholarship and the Research School of Astronomy and Astrophysics at the Australian National University for the ANU Supplementary PhD Scholarship. MJI acknowledges funding provided by the Australian Research Council (Discovery Project DP170102233 and Future Fellowship FT130100235). CF acknowledges funding provided by the Australian Research Council (Discovery Project DP170100603 and Future Fellowship FT180100495), and the Australia-Germany Joint Research Cooperation Scheme (UA-DAAD). Publisher Copyright: {\textcopyright} 2020 The Author(s)",
year = "2020",
month = oct,
doi = "10.1093/mnras/staa2434",
language = "English",
volume = "498",
pages = "1382--1396",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
number = "1",
}