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24 April 2024 |
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An Infrared Coronagraphic Survey for Substellar Companions | | P.Lowrance
; E. E. Becklin
; G. Schneider
; D. Kirkpatrick
; A.Weinberger
; B. Zuckerman
; C.Dumas
; J.L.Beuzit
; P.Plait
; E.Malumuth
; S.Heap
; R.Terrile
; D. Hines
; | | Date: |
16 Jun 2005 | | Subject: | astro-ph | | Affiliation: | SSC), E. E. Becklin (UCLA), G. Schneider (UofA), D. Kirkpatrick (IPAC), A.Weinberger (Carnegie), B. Zuckerman (UCLA), C.Dumas (ESO), J.L.Beuzit (Grenoble), P.Plait (Sonoma State), E.Malumuth (Goddard), S.Heap (Goddard), R.Terrile (JPL), D. Hines (SSI | | Abstract: | We have used the F160W filter (1.4-1.8 um) and the coronagraph on the Near-InfraRed Camera and Multi-Object Spectrometer (NICMOS) on the Hubble Space Telescope (HST) to survey 45 single stars with a median age of 0.15 Gyr, an average distance of 30 pc, and an average H-magnitude of 7 mag. For the median age we were capable of detecting a 30 M_Jup companion at separations between 15 and 200 AU. A 5 M_Jup object could have been detected at 30 AU around 36% of our primaries. For several of our targets that were less than 30 Myr old, the lower mass limit was as low as a Jupiter mass, well into the high mass planet region. Results of the entire survey include the proper motion verification of five low-mass stellar companions, two brown dwarfs (HR7329B and TWA5B) and one possible brown dwarf binary (Gl 577B/C). | | Source: | arXiv, astro-ph/0506358 | | Services: | Forum | Review | PDF | Favorites | |
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