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VLT Spectra of the Companion Candidate Cha Hα 5/cc 1

  • Ralph Neuhäuser (a1), Eike Guenther (a2) and Wolfgang Brandner (a3)

Abstract

We obtained optical and infrared spectra of Cha Hα 5/cc 1, a faint possibly sub-stellar companion candidate next to the M6-type brown dwarf candidate Cha Hα 5 in Cha I, using FORS1 and ISAAC at the VLT. The VRIJHK colors of Cha Hα 5/cc 1 are consistent with either an L-type companion or a K-type background giant. Our spectra show that the companion candidate actually is a background star.

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References

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Burrows, A., Marley, M., Hubbard, W.B., et al., 1997, ApJ 491, 856
Chabrier, G. & Baraffe, I., 2000, ARA&A 38, 337
Comerón, F., Neuhäuser, R. & Kaas, A.A., 2000, A&A 359, 269
Neuhäuser, R., Brandner, W., Alves, J., Joergens, V., Comerón, F., 2002, A&A 384, 999

VLT Spectra of the Companion Candidate Cha Hα 5/cc 1

  • Ralph Neuhäuser (a1), Eike Guenther (a2) and Wolfgang Brandner (a3)

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