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A Survey for hot Central Stars of Planetary Nebulae I. Methods and First Results
Graham C. Kanarek, Michael M. Shara, Jacqueline K. Faherty +2
We present the results of initial spectrographic followup with the Very Large Telescope (UT3, Melipal) for Galactic plane CIV emission-line candidates in the near-infr…
Characterization of the Very Low Mass Secondary in the GJ 660.1AB System
Christian Aganze, Adam J. Burgasser, Jacqueline K. Faherty +7
We present spectroscopic analysis of the low mass binary star system GJ 660.1AB, a pair of nearby M dwarfs for which we have obtained separated near-infrared spectra (0.9-2.5 m)…
MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449
Timothy J. Rodigas, Pamela Arriagada, Jackie Faherty +17
We present high-contrast Magellan adaptive optics (MagAO) images of HD 7449, a Sun-like star with one planet and a long-term radial velocity (RV) trend. We unambiguously detect the…
Discovery of a brown dwarf companion to the A3V star β Circini
L. C. Smith, P. W. Lucas, C. Contreras Peña +14
We report the discovery of an L dwarf companion to the A3V star β Circini. VVV J151721.49-585131.5, or β Cir B, was identified in a proper motion and parallax catalogue of the Vist…
An ALMA Survey for Disks Orbiting Low-Mass Stars in the TW Hya Association
David R. Rodriguez, Gerrit van der Plas, Joel H. Kastner +5
We have carried out an ALMA survey of 15 confirmed or candidate low-mass (<0.2M) members of the TW Hya Association (TWA) with the goal of detecting molecular gas in the for…
Fundamental Parameters and Spectral Energy Distributions of Young and Field Age Objects with Masses Spanning the Stellar to Planetary Regime
Joseph C. Filippazzo, Emily L. Rice, Jacqueline Faherty +3
We combine optical, near-infrared and mid-infrared spectra and photometry to construct expanded spectral energy distributions (SEDs) for 145 field age (\textgreater 500 Myr) and 53…