Melanie Freed

MMT/AO 5 micron Imaging Constraints on the Existence of Giant Planets Orbiting Fomalhaut at ~13-40 AU (2008)

Kenworthy, Matthew A., Mamajek, Eric E., Hinz, Philip M., Meyer, Michael R., Heinze, Aren N., Miller, Douglas L., ...

A candidate < 3 Jupiter mass, extrasolar planet was recently imaged by Kalas et al. (2008) using HST/ACS at 12.7" (96 AU) separation from the nearby (d = 7.7 pc) young (~200 Myr) A2V star Fomalhaut....

Thermal Infrared Constraint to a Planetary Companion of Vega with the MMT Adaptive Optics System (2006)

Hinz, Philip M., Heinze, A. N., Sivanandam, Suresh, Miller, Douglas L., Kenworthy, Matthew A., Brusa, Guido, ...

Vega may have a massive companion in a wide orbit, as evidenced by structure in its cold dust debris. We have tested this hypothesis by direct imaging with adaptive optics in the M band. The...

Klio: A 5 micron camera for the detection of giant exoplanets (2003)

Freed, Melanie, Hinz, Philip M., Meyer, Michael R.

We plan to take advantage of the unprecedented combination of low thermal background and high resolution provided by the 6.5m MMT's adaptive secondary mirror, to target the 3-5 micron atmospheric...

An Adaptive Optics Survey of M6.0-M7.5 Stars: Discovery of Three Very Low Mass Binary Systems Including Two Probable Hyades Members (2003)

Siegler, Nick, Close, Laird M., Mamajek, Eric E., Freed, Melanie

A survey of 30 nearby M6.0-M7.5 dwarfs with Ks0.8, Delta Ks20 AU) very low mass (M_{tot}3 AU. This binary frequency is less than the ~32% measured among early M dwarfs over the same separation range....

Detection of Nine M8.0-L0.5 Binaries: The Very Low Mass Binary Population and its Implications for Brown Dwarf and VLM Star Formation (2003)

Close, Laird M., Siegler, Nick, Freed, Melanie, Biller, Beth

Use of the highly sensitive Hokupa'a/Gemini curvature wavefront sensor has allowed direct adaptive optics (AO) guiding on very low mass (VLM) stars with SpT=M8.0-L0.5. A survey of 39 such objects...

Discovery of a Tight Brown Dwarf Companion to the Low Mass Star LHS 2397a (2002)

Freed, Melanie, Close, Laird M., Siegler, Nick

Using the adaptive optics system, Hokupa'a, at Gemini-North, we have directly imaged a companion around the UKIRT faint standard M8 star, LHS 2397a (FS 129) at a separation of 2.96 AU. Near-Infrared...

A prototype instrument for single pinhole small animal adaptive SPECT imaging

Freed, Melanie, Kupinski, Matthew A., Furenlid, Lars R., Wilson, Donald W., Barrett, Harrison H.

The authors have designed and constructed a small-animal adaptive SPECT imaging system as a prototype for quantifying the potential benefit of adaptive SPECT imaging over the traditional fixed...