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SUMMARY:(Marino) What can ALMA tell us about planetary systems? (von-Boett
 icher) EBLM J0555-57Ab: A Saturn-size low mass star at the hydrogen burnin
 g limit - Sebastian Marino & Alex von-Boetticher (Cambridge)
DTSTART:20170503T150000Z
DTEND:20170503T160000Z
UID:TALK72239@talks.cam.ac.uk
CONTACT:Ed Gillen
DESCRIPTION:(Marino) In this talk I will present five new ALMA observation
 s of systems with debris discs. These observations illustrate how debris d
 iscs and ALMA observations can provide essential pieces of information to 
 understand the properties and diversity of planetary systems. In particula
 r\, I will show how we can learn about: 1) the presence of icy-rich bodies
  and their volatile content\; 2) exocomets delivering volatiles to the\nin
 ner regions of a system\; 3) where do planetesimals form?\; 4) evidence of
  gaps carved by planets at 10s of AU in debris discs.\n\n(von-Boetticher) 
 Low-mass eclipsing binaries (EBLMs)\, detected as false-positives by plane
 t-searching surveys\, enable empirical measurements of the stellar mass-ra
 dius relation for low-mass stars. I will present results on EBLM J0555-57A
 b\, a dense\, very low-mass star at the hydrogen burning limit. EBLM J0555
 -57Ab has a mass of 85 ± 4MJup and radius of 0.84 (+0.14\,-0.04) RJup\, c
 omparable in size to Saturn\, and is one of the densest non-stellar-remnan
 t objects currently known.
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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