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2011MNRAS.412.2071C - Mon. Not. R. Astron. Soc., 412, 2071-2078 (2011/April-2)
Methane band and Spitzer mid-IR imaging of l and T dwarf candidates in the Pleiades.
CASEWELL S.L., JAMESON R.F., BURLEIGH M.R., DOBBIE P.D., ROY M., HODGKIN S.T. and MORAUX E.
Abstract (from CDS):
PLZJ23 and PLZJ93 are also very bright in the [3.6] µm waveband (PLZJ100 is not measured) compared to field brown dwarfs which can also be explained by this lack of methane.
The definition of the T spectral class is the appearance of methane absorption, so strictly, via this definition, PLZJ93 and PLZJ100 cannot be described as T dwarfs. The colours of these two objects are, however, not compatible with those of L dwarfs. Thus we have a classification problem and cannot assign these objects a (photometric) spectral type.
Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS
Journal keyword(s): brown dwarfs - stars: low-mass - open clusters and associations: individual: Pleiades
Simbad objects: 26
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