Evidence for a co-moving sub-stellar companion of GQ Lup

@article{Neuhaeuser2005EvidenceFA,
  title={Evidence for a co-moving sub-stellar companion of GQ Lup},
  author={Ralph Neuhaeuser and E. W. Guenther and Guenther Wuchterl and Markus Mugrauer and Ana Bedalov and Peter Hauschildt},
  journal={Astronomy and Astrophysics},
  year={2005},
  volume={435}
}
We present a companion of the ≤2 Myr young classical T Tauri star GQ Lup in the Lupus star forming region at 140 ± 50 pc from imaging, astrometry, and spectroscopy. With direct K-band imaging using VLT/NACO, we detected an object 6 mag fainter than GQ Lup located 0.7 �� west of it. Compared to images obtained 2 to 5 years earlier with Subaru/CIAO and HST/PC, this object shares the proper motion of GQ Lup by 5 and 7σ, respectively, hence it is a co-moving companion. Its K −Lcolor is consistent… 

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References

SHOWING 1-10 OF 32 REFERENCES

A giant planet candidate near a young brown dwarf - Direct VLT/NACO observations using IR wavefront sensing

We present deep VLT/NACO infrared imaging and spectroscopic observations of the brown dwarf 2MASSWJ 1207334−393254, obtained during our on-going adaptive optics survey of southern young, nearby

L Dwarfs and the Substellar Mass Function

Analysis of initial observations sky surveys has shown that the resulting photometric catalogs, combined with far-red optical data, provide an extremely effective method of finding isolated, very

New weak-line T Tauri stars in Lupus (Krautter+ 1997)

We present first results obtained by a survey of the Lupus star forming region in search of new T Tauri stars. This study has been performed on the basis of deep pointed ROSAT observations in the

Near-Infrared Imaging of the Circumstellar Disk around Herbig Ae Star HD 150193A*

We present 0.″1 resolution near-infrared imaging of Herbig Ae star HD 150193 (~6 Myr) and its T Tauri companion with the stellar coronagraphic camera (Coronagraphic Imager with Adaptive Optics) on

Evolutionary models for low-mass stars and brown dwarfs: uncertainties and limits at very young ages

We analyse pre-Main Sequence evolutionary tracks for low mass stars with masses $m \\le 1.4 \\msol$ based on the Baraffe et al. (1998) input physics. We also extend the recent Chabrier et al. (2000)

A Nongray Theory of Extrasolar Giant Planets and Brown Dwarfs

We present the results of a new series of nongray calculations of the atmospheres, spectra, colors, and evolution of extrasolar giant planets (EGPs) and brown dwarfs for effective temperatures below

HST, VLT, and NTT imaging search for wide companions to bona-fide and candidate brown dwarfs in the Cha I dark cloud

We present results from a deep imaging search for companions around the young bona-fide and candidate brown dwarfs Cha H α 1 to 12 in the Cha I dark cloud, performed with HST WFPC2 ( R , I , H α ),

Gravity Indicators in the Near-Infrared Spectra of Brown Dwarfs

We investigate the sensitivity to temperature and gravity of the strong absorption features in the J- and K-band spectra of substellar objects. We compare the spectra of giants and young M dwarfs (of

L' AND M' Photometry Of Ultracool Dwarfs

We have compiled L′ (3.4–4.1 μm) and M′ (4.6–4.8 μm) photometry of 63 single and binary M, L, and T dwarfs obtained at the United Kingdom Infrared Telescope using the Mauna Kea Observatory filter

The stellar population of the Lupus clouds

We present photometric and spectroscopic observations of the H alpha emission stars in the Lupus dark cloud complex. We estimate the effective temperatures of the stars from their spectral types and