TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858
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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05/14/19 06:06PM
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Tweets
neuronomer: Vanderburg et al. report the discovery of the first star you can see with the naked eye that hosts three planets! https://t.co/oV0e00jKq2 https://t.co/hW917Rrrug
TM_Eubanks: RT @qraal: [1905.05193] TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858 https://t.co/gOQSNrlgxd
aussiastronomer: Real time footage of me trying to wade through the latest crop of #exoplanet papers - new planets, refuted planets, re-confirmed planets... https://t.co/Dw4ZkvZQv9 https://t.co/ELT2lxtUgl https://t.co/GtM16lKQ6c https://t.co/a3In6kqSBs
jcbastro: Yet another awesome discovery from TESS (paper led by Andrew Vanderburg) - three planets around naked-eye star HR 858 (making this the brightest compact multi so far), two of which *may* be in true resonance! https://t.co/sEyLnnSpB0 https://t.co/7Vr2UiB94C
exohugh: Whoah! @NASA_TESS has detected a triumvirate of small planets around a 6th magnitude (i.e. almost naked-eye) star. That makes this sun-like star one of the brightest in the sky to have ever been found hosting transiting planets! And it's has three of them! https://t.co/CgRmC3TV26 https://t.co/T4elavQzGj
scimichael: TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858 https://t.co/3qV5cIboKV
qraal: [1905.05193] TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858 https://t.co/gOQSNrlgxd
anomalistnews: RT @StarshipBuilder: TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858 https://t.co/pAy2shESlc "(TESS) observati…
StarshipBuilder: TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858 https://t.co/pAy2shESlc "(TESS) observations have revealed a compact multi-planet system around the sixth-magnitude star HR 858 (TIC 178155732), located 32 parsecs away. "
Astro_JRod: A system of three super earths orbiting the Naked-Eye Star (V=6.4) HR 858! Should be some great follow up opportunities on this system! https://t.co/7bR9PPeHcE
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