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29 March 2024
 
  » arxiv » astro-ph/0104135

 Article overview


NICS-TNG low-resolution 0.85-2.45um spectra of L-Dwarfs: a near-infrared spectral classification scheme for faint dwarfs
L. Testi ; F. D’Antona ; F. Ghinassi ; J. Licandro ; A. Magazzu’ ; R. Maiolino ; F. Mannucci ; A. Marconi ; N. Nagar ; A. Natta ; E. Oliva ;
Date 8 Apr 2001
Subject astro-ph
AffiliationArcetri), F. D’Antona (Roma), F. Ghinassi (TNG), J. Licandro (TNG), A. Magazzu’ (TNG, Catania), R. Maiolino (Arcetri), F. Mannucci (CAISMI-CNR), A. Marconi (Arcetri), N. Nagar (Arcetri), A. Natta (Arcetri), E. Oliva (TNG, Arcetri
AbstractWe present complete near-infrared (0.85-2.45 um), low-resolution (~100) spectra of a sample of 26 disk L-dwarfs with reliable optical spectral type classification. The observations have been obtained with NICS at the TNG using a prism-based optical element (the Amici device) that provides a complete spectrum of the source on the detector. Our observations show that low-resolution near-infrared spectroscopy can be used to determine the spectral classification of L-dwarfs in a fast but accurate way. We present a library of spectra that can be used as templates for spectral classification of faint dwarfs. We also discuss a set of near-infrared spectral indices well correlated with the optical spectral types that can be used to accurately classify L-dwarfs earlier than L6.
Source arXiv, astro-ph/0104135
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