Dynamical masses for the nearest brown dwarf binary: Epsilon Indi Ba, Bb (2008)
Cardoso, C. V., McCaughrean, M. J., King, R. R., Close, L. M., Lenzen, R., ...
We present preliminary astrometric results for the closest known brown dwarf binary to the Sun: Epsilon Indi Ba, Bb at a distance of 3.626 pc. Via ongoing monitoring of the relative separation of the...
Biller, B. A., Kasper, M., Close, L. M., Brandner, W., Kellner, S.
We present VLT/NACO SDI images of the very nearby star SCR 1845-6357 (hereafter SCR 1845). SCR 1845 is a recently discovered (Hambly et al. 2004) M8.5 star just 3.85 pc from the sun (Henry et al....
Biller, B. A., Kasper, M., Close, L. M., Brandner, W., Kellner, S.
This paper was accidentally submitted twice to astro-ph. This version has been withdrawn -- please see astro-ph/0601440 instead.
L-band search for substellar companions in the Tucana and beta Pictoris moving groups (2006)
Kasper, M., Apai, D., Brandner, W., Close, L. M., Geißler, K.
Radial velocity surveys provide evidence that giant extrasolar planets are common, but their detection space is limited to only a few astronomical units from the stars. In order to close this gap,...
On the dynamics of the AB Doradus system (2006)
Guirado, J. C., Martí-Vidal, I., Marcaide, J. M., Close, L. M., Algaba, J. C., Brandner, W., ...
We present an astrometric analysis of the binary systems AB Dor A /AB Dor C and AB Dor Ba /AB Dor Bb. These two systems of well-known late-type stars are gravitationally associated and they...
On the age, spectral type, orbit, and comparison to evolutionary models of AB Dor C (2006)
Close, L. M., Nielsen, E. L., Guirado, J. C., Biller, B. A., Lenzen, R., Brandner, W., ...
Biller, B. A., Kasper, M., Close, L. M., Brandner, W., Kellner, S.
We present VLT/NACO SDI images of the very nearby star SCR 1845-6357 (hereafter SCR 1845). SCR 1845 is a recently discovered M8.5 star just 3.85 pc from the Sun. Using the capabilities of the unique...
On the dynamics of the ABDoradus system (2005)
Guirado, J. C., Marti-Vidal, I., Marcaide, J. M., Close, L. M., Algaba, J. C., Brandner, W., ...
We present an astrometric analysis of the binary systems ABDorA /ABDorC and ABDorBa / ABDorBb. These two systems of well-known late-type stars are gravitationally associated and they constitute the...
AB Doradus C: Age, Spectral Type, Orbit, and Comparison to Evolutionary Models (2005)
Nielsen, E. L., Close, L. M., Guirado, J. C., Biller, B. A., Lenzen, R., Brandner, W., ...
We expand upon the results of Close et al. 2005 regarding the young, low-mass object AB Dor C and its role as a calibration point for theoretical tracks. We present an improved spectral reduction and...
Selected examples of solar and extra-solar planetary science with AO (2005)
Close, L. M., Lenzen, R., Biller, B., Brandner, W., Hartung, M.
AB Doradus C: age, spectral type, orbit, and comparison to evolutionary models (2005)
Nielsen, E. L., Close, L. M., Guirado, J. C., Biller, B. A., Lenzen, R., Brandner, W., ...
We expand upon the results of Close et al. (2005) regarding the young, low-mass object AB Dor C and its role as a calibration point for theoretical tracks. We present an improved spectral reduction...
Biller, B. A., Close, L. M., Li, A., Bieging, J. H., Hoffmann, W. F., Hinz, P. M., ...
We present high resolution (~0.1"), very high Strehl ratio (0.97+-0.03) mid-infrared (IR) adaptive optics (AO) images of the AGB star RV Boo utilizing the MMT adaptive secondary AO system. RV Boo was...
ε Indi Ba, Bb: The nearest binary brown dwarf (2004)
McCaughrean, M. J., Close, L. M., Lenzen, R., Biller, B., Brandner, W., ...
We have carried out high angular resolution near-infrared imaging and low-resolution (Rsim;1000) spectroscopy of the nearest known brown dwarf, \varepsilon Indi B, using the ESO VLT NAOS/CONICA...
A new VLT surface map of Titan at 1.575 microns (2004)
Hartung, M., Herbst, T. M., Close, L. M., Lenzen, R., Brandner, W., Marco, O., ...
We present a first high contrast 1.575 micron surface map of Titan, that is haze corrected by simultaneously imaging the stratospheric layer. At visible and most near-infrared wavelengths, the...
M. Hartung, T. M. Herbst, L. M. Close, R. Lenzen, W. Br, O. Marco, ...
Abstract. We present a first high contrast 1.575 micron surface map of Titan, that is haze corrected by simultaneously imaging the stratospheric layer. At visible and most near-infrared wavelengths,...
Epsilon Indi Ba/Bb: the nearest binary brown dwarf (2003)
McCaughrean, M. J., Close, L. M., Lenzen, R., Biller, B., Brandner, W., ...
We have carried out high angular resolution near-infrared imaging and low-resolution (R~1000) spectroscopy of the nearest known brown dwarf, Eps Indi B, using the ESO VLT NAOS/CONICA adaptive optics...
Near Infrared Adaptive Optics Imaging of the Embedded Cluster NGC 2024 (2002)
Beck, T. L., Simon, M., Close, L. M.
We present the results of a high resolution near infrared adaptive optics survey of the young obscured star forming region NGC 2024. Out of the total 73 stars detected in the adaptive optics survey...
Close, L. M., Potter, D., Brandner, W., Lloyd-Hart, M., Liebert, J., Burrows, A., ...
Use of the highly sensitive Hokupa'a curvature wavefront sensor has allowed for the first time direct adaptive optics (AO) guiding on brown dwarfs and VLM stars (SpT=M7-L2). An initial survey of 9...
Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L. M., Currie, D. G., Parmeggiani, G.
StarFinder is a new code for the deep analysis of stellar fields, designed for well-sampled images with high and low Strehl ratio. It is organized in the form of a self-contained IDL widget-based...
Gray Lloyd--Hart, T. Martinez, L. M. Close, G. Brusa, D. G. Bruns, B. A. Mcleod, ...
A new adaptive optics system has been constructed for moderately high resolution in the near infrared at the Multiple Mirror Telescope (MMT). The system, called FASTTRAC II, has been designed to...