Events in Physics
Wednesday, June 11, 2014
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Glassy Systems and Constrained Stochastic DynamicsRuns from Monday, June 09 to Wednesday, June 11. |
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Staff Safety BriefingtbaReserve this morning for briefing to Academic Staff and Lab/Facility Managers - anyone who has responsibility for a Laboratory area. Details tbc by R Buckle and J Brannon. |
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Mari Cruz Galvez Ortiz (CAB)Title: Search for Pleiades T dwarfs Abstract: We will present our on-going project aimed at identifying Pleiades T-type planetary-mass members. An area of 0.82 deg2 was explored photometric and astrometrically with deep images taken in the J and H filters and separated by 9 yr. The survey limiting magnitude is J, H = 21mag. The long time baseline allowed us to measure proper motions since the cluster motion is quite distinctive. According to substellar evolutionary models, our exploration is sensitive to T-type Pleiads with masses in the interval 9-15 times the mass of Jupiter. These observations allowed us to study the planetary mass function in the Pleiades cluster. Confirmed Pleiades T-type dwarfs have an age of 120 Myr and a well-defined solar metallicity; they will thus become benchmark objects for our understanding of the ultracool dwarf population (both single and orbiting stars, including |