11 papers
NAHUAL: A cool spectrograph for planets of ultra-cool objects
E. W. Guenther, E. L. Martin, D. Barrado y Navascues +1
We present the status of an ongoing study to built a a high resolution near infrared Echelle spectrograph (NAHUAL) for the 10.4-m-Gran Telescopio Canarias (GTC) which will be espec…
Binaries among Ultra-cool Dwarfs and Brown Dwarfs
Wolfgang Brandner, Herve Bouy, Eduardo L. Martin +1
Observations of brown dwarfs provide important feedback on theories of atmospheres and inner structure of substellar objects. Brown dwarf binary systems furthermore offer the uniqu…
S Ori 70: still a strong cluster planet candidate
Eduardo L. Martín
In this paper I show that the coolest Orionis cluster planet S Ori 70 is still a strong candidate member despite recent claims by Burgasser et al. that it could be a brown dwarf…
A search for Jovian-mass planets around CM Draconis using eclipse minima timing
H. J. Deeg, L. R. Doyle, V. P. Kozhevnikov +3
For the eclipsing binary system CM Draconis, eclipse minimum times have been monitored with high precision between 1994 and 1999. Periodic deviations of minimum times from a linear…
Ages, Distances, and the Initial Mass Functions of Stellar Clusters
J. R. Stauffer, R. D. Jeffries, E. L. Martin +1
We provide a review of the current status of several topics on the ages, distances, and mass functions of open clusters, with a particular emphasis on illuminating the areas of unc…
Radio emission from RASS sources south of Taurus-Auriga
A. Magazzu, G. Umana, E. L. Martin
We present a 8.4 GHz VLA survey of 50 optical counterparts to 46 ROSAT All-Sky survey (RASS) X-ray sources south of the Taurus-Auriga star-forming region. This survey detected 3 so…