TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858. (arXiv:1905.05193v1 [astro-ph.EP])

TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858. (arXiv:1905.05193v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Vanderburg_A/0/1/0/all/0/1">Andrew Vanderburg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Huang_C/0/1/0/all/0/1">Chelsea X. Huang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rodriguez_J/0/1/0/all/0/1">Joseph E. Rodriguez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Becker_J/0/1/0/all/0/1">Juliette C. Becker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ricker_G/0/1/0/all/0/1">George R. Ricker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vanderspek_R/0/1/0/all/0/1">Roland K. Vanderspek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Latham_D/0/1/0/all/0/1">David W. Latham</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Seager_S/0/1/0/all/0/1">Sara Seager</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jenkins_J/0/1/0/all/0/1">Jon M. Jenkins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Addison_B/0/1/0/all/0/1">Brett Addison</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bieryla_A/0/1/0/all/0/1">Allyson Bieryla</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Briceno_C/0/1/0/all/0/1">Cesar Brice&#xf1;o</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bowler_B/0/1/0/all/0/1">Brendan P. Bowler</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burke_C/0/1/0/all/0/1">Christopher J. Burke</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burt_J/0/1/0/all/0/1">Jennifer A. Burt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Caldwell_D/0/1/0/all/0/1">Douglas A. Caldwell</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Clark_J/0/1/0/all/0/1">Jake T. Clark</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Crossfield_I/0/1/0/all/0/1">Ian Crossfield</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dittmann_J/0/1/0/all/0/1">Jason A. Dittmann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dynes_S/0/1/0/all/0/1">Scott Dynes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Guerrero_N/0/1/0/all/0/1">Natalia Guerrero</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Horner_J/0/1/0/all/0/1">Jonathan Horner</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kane_S/0/1/0/all/0/1">Stephen R. Kane</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kielkopf_J/0/1/0/all/0/1">John Kielkopf</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kraus_A/0/1/0/all/0/1">Adam L. Kraus</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Law_N/0/1/0/all/0/1">Nicolas Law</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mann_A/0/1/0/all/0/1">Andrew W. Mann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mengel_M/0/1/0/all/0/1">Matthew W. Mengel</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morton_T/0/1/0/all/0/1">Timothy D. Morton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Okumura_J/0/1/0/all/0/1">Jack Okumura</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pearce_L/0/1/0/all/0/1">Logan A. Pearce</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Plavchan_P/0/1/0/all/0/1">Peter Plavchan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rose_M/0/1/0/all/0/1">Mark E. Rose</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rowden_P/0/1/0/all/0/1">Pam Rowden</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Smith_J/0/1/0/all/0/1">Jeffrey C. Smith</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stassun_K/0/1/0/all/0/1">Keivan Stassun</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tinney_C/0/1/0/all/0/1">C.G. Tinney</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wittenmyer_R/0/1/0/all/0/1">Rob Wittenmyer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wright_D/0/1/0/all/0/1">Duncan J. Wright</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_H/0/1/0/all/0/1">Hui Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhou_G/0/1/0/all/0/1">George Zhou</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ziegler_C/0/1/0/all/0/1">Carl A. Ziegler</a>

Transiting Exoplanet Survey Satellite (TESS) observations have revealed a
compact multi-planet system around the sixth-magnitude star HR 858 (TIC
178155732), located 32 parsecs away. Three planets, each about twice the size
of Earth, transit this slightly-evolved, late F-type star, which is also a
member of a visual binary. Two of the planets may be in mean motion resonance.
We analyze the TESS observations, using novel methods to model and remove
instrumental systematic errors, and combine these data with follow-up
observations taken from a suite of ground-based telescopes to characterize the
planetary system. The HR 858 planets are enticing targets for precise radial
velocity observations, secondary eclipse spectroscopy, and measurements of the
Rossiter-McLaughlin effect.

Transiting Exoplanet Survey Satellite (TESS) observations have revealed a
compact multi-planet system around the sixth-magnitude star HR 858 (TIC
178155732), located 32 parsecs away. Three planets, each about twice the size
of Earth, transit this slightly-evolved, late F-type star, which is also a
member of a visual binary. Two of the planets may be in mean motion resonance.
We analyze the TESS observations, using novel methods to model and remove
instrumental systematic errors, and combine these data with follow-up
observations taken from a suite of ground-based telescopes to characterize the
planetary system. The HR 858 planets are enticing targets for precise radial
velocity observations, secondary eclipse spectroscopy, and measurements of the
Rossiter-McLaughlin effect.

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