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| Paper: |
MML 53 – The Brightest Pre-Main-Sequence Eclipsing Binary |
| Volume: |
448, 16th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun |
| Page: |
747 |
| Authors: |
Stempels, H. C.; Hebb, L. |
| Abstract: |
MML 53 is a newly discovered and bright (V=10.8m) pre-main-sequence eclipsing binary located in the 15–22 Myr old
Upper-Centaur-Lupus (UCL) star forming region, with component masses of
∼1.02 M☉ and ∼0.88 M☉. This system is
the first low-mass pre-main-sequence eclipsing binary discovered outside the
∼10 Myr old Orion star-forming region, and samples a slightly older age. A
closer examination of MML 53 reveals that this is a three-component
system, where the primary and secondary form a close eclipsing binary. Here we
present preliminary results from our recent high-resolution spectroscopic study
of this object, including estimates of the individual component masses, radii
and temperatures. In addition we find indications that the tertiary in
MML 53 interacts gravitationally with the eclipsing components. |
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