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Titolo:
Detection of the unusual 3.5 mu m feature in the Herbig Be star MWC 297
Autore:
Terada, H; Imanishi, M; Goto, M; Maihara, T;
Indirizzi:
Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA Natl AstronObserv Japan Hilo HI USA 96720 Telescope, Hilo, HI 96720 USA Natl Astron Observ, Tokyo 1818588, Japan Natl Astron Observ Tokyo Japan 1818588 tron Observ, Tokyo 1818588, Japan Kyoto Univ, Dept Astron, Sakyo Ku, Kyoto 6068502, Japan Kyoto Univ KyotoJapan 6068502 pt Astron, Sakyo Ku, Kyoto 6068502, Japan
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 3, volume: 377, anno: 2001,
pagine: 994 - 998
SICI:
1432-0746(200110)377:3<994:DOTU3M>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYCYCLIC AROMATIC-HYDROCARBONS; AUSTRALIS MOLECULAR CLOUD; MAIN-SEQUENCE STAR; AE/BE STARS; EMISSION FEATURES; INFRARED-SPECTROSCOPY; SWS OBSERVATIONS; SPECTRA; MICRONS; DUST;
Keywords:
infrared : stars; ISM dust; stars : individual : MWC 297; stars : circumstellar matter;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Terada, H Natl Astron Observ Japan, Subaru Telescope, Hilo, HI 96720 USA Natl Astron Observ Japan Hilo HI USA 96720 , Hilo, HI 96720 USA
Citazione:
H. Terada et al., "Detection of the unusual 3.5 mu m feature in the Herbig Be star MWC 297", ASTRON ASTR, 377(3), 2001, pp. 994-998

Abstract

We present spectroscopic observations of MWC 297 with medium spectral resolution in the 2.1-4.1 mum region, that show the unusual emission band at 3.53 mum as well as gaseous emission lines of the Brackett, Pfund and Humphrey series of hydrogen. A unique aspect of the measured 3.53 mum emission band is the fact that, within our detection limit, it is not accompanied by the 3.3 and 3.4 mum emission band. We suggest that the 3.53 mum feature couldbe emitted by highly dehydrogenized carbonaceous dust particles that were processed under the influence of the strong radiation field of the central star.

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Documento generato il 04/04/20 alle ore 08:41:42