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Titolo:
NICS-TNG low-resolution 0.85-2.45 micron spectra of L dwarfs: A near-infrared spectral classification scheme for faint dwarfs
Autore:
Testi, L; DAntona, F; Ghinassi, F; Licandro, J; Magazzu, A; Maiolino, R; Mannucci, F; Marconi, A; Nagar, N; Natta, A; Oliva, E;
Indirizzi:
Osservatorio Astrofis Arcetri, I-50125 Florence, Italy Osservatorio Astrofis Arcetri Florence Italy I-50125 125 Florence, Italy Osservatorio Astron Roma, I-00044 Frascati, Italy Osservatorio Astron Roma Frascati Italy I-00044 I-00044 Frascati, Italy Ctr Galileo Galilei & Telescopio Nazl Galileo, E-38700 Santa Cruz de La Palma, Spain Ctr Galileo Galilei & Telescopio Nazl Galileo Santa Cruz de La Palma Spain E-38700 Osservatorio Astrofis Catania, I-95123 Catania, Italy Osservatorio Astrofis Catania Catania Italy I-95123 95123 Catania, Italy CNR, Ctr Astron Infrarossa & Studio Mezzo Interstellar, I-50125 Florence, Italy CNR Florence Italy I-50125 o Mezzo Interstellar, I-50125 Florence, Italy
Titolo Testata:
ASTROPHYSICAL JOURNAL
fascicolo: 2, volume: 552, anno: 2001,
parte:, 2
pagine: L147 - L150
SICI:
0004-637X(20010510)552:2<L147:NL0MSO>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIELD BROWN DWARFS; DENIS;
Keywords:
infrared : stars; stars : atmospheres; stars : fundamental parameters; stars : low-mass, brown dwarfs;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Testi, L Osservatorio Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence,Italy Osservatorio Astrofis Arcetri Largo E Fermi 5 Florence Italy I-50125
Citazione:
L. Testi et al., "NICS-TNG low-resolution 0.85-2.45 micron spectra of L dwarfs: A near-infrared spectral classification scheme for faint dwarfs", ASTROPHYS J, 552(2), 2001, pp. L147-L150

Abstract

We present complete near-infrared (0.85-2.45 mum), low-resolution (similarto 100) spectra of a sample of 26 disk L dwarfs with reliable optical spectral type classification. The observations have been obtained with the NearInfrared Camera and Spectrograph at the Telescopio Nazionale Galileo usinga 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 ofspectra that can be used as templates for spectral classification of faintdwarfs. We also discuss a set of near-infrared spectral indices well correlated with the optical spectral types that can be used to classify accurately L dwarfs earlier than L6.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/10/20 alle ore 05:35:20