Imaging and Spectroscopy of Hot (Young) "Ultracool" Companions
Abstract
We report the initial results from a program of HST/STIS spectroscopy of "hot" low-mass (brown dwarf) companions to nearby young stars identified in our HST/NICMOS coronagraphic imaging survey. We present spectra of the likely 20 and 40 Jupiter mass companions to CD -33° 7795 and HR 7329, respectively, the binary companions to GL 577 (both, possibly, brown dwarfs), and the low-mass star GL 503.2B. We discuss the state of our recent follow-up observations of the putative companion to TWA 6. We add these companions to the very few already known, allowing the first steps to be taken toward answering many fundamental questions regarding the formation and evolution of multiple systems with components near and below the stellar/substellar boundary.
Additional Information
© 2001 Springer-Verlag Berlin Heidelberg. This work is based, in part, on observations with the NASA/ESA Hubble Space Telescope obtained at the Space Telescope Science Institute, which is operated by AURA, Inc . under NASA contract NAS5-26555 and supported by grants NAG5-3042 and GO-98 .8176A to the NICMOS Instrument Definition and Environments of Nearby Stars teams. We acknowledge additional support by NASA grant NAG5-4688 to UCLA and the use of the Palomar and W.M. Keck observatories; the latter operated as a scientific partnership between the California Institute of Technology, the University of California and NASA.Additional details
- Eprint ID
- 99787
- Resolver ID
- CaltechAUTHORS:20191111-154836805
- NAS5-26555
- NASA
- NAG5-3042
- NASA
- GO-98.8176A
- NASA
- NAG5-4688
- NASA
- Created
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2019-11-12Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field
- Caltech groups
- Infrared Processing and Analysis Center (IPAC)