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Titolo:
INFRARED SPECTROPHOTOMETRY OF NGC-7023 WITH ISOCAM
Autore:
CESARSKY D; LEQUEUX J; ABERGEL A; PERAULT M; PALAZZI E; MADDEN S; TRAN D;
Indirizzi:
UNIV PARIS 11,INST ASTROPHYS SPATIALE,BAT 121 F-91450 ORSAY FRANCE OBSERV PARIS F-75014 PARIS FRANCE CNR,IST TESRE I-40129 BOLOGNA ITALY CEA SACLAY,SAP,DAPNIA,DSM F-91191 GIF SUR YVETTE FRANCE
Titolo Testata:
Astronomy and astrophysics
fascicolo: 2, volume: 315, anno: 1996,
pagine: 305 - 308
SICI:
0004-6361(1996)315:2<305:ISONWI>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
IR EMISSION; NGC-7023; DUST; SPECTRA; MODELS;
Keywords:
ISM, NGC 7023; ISM, DUST; ISM, MOLECULES; ISM, REFLECTION NEBULAE; INFRARED, ISM, LINES AND BANDS; INFRARED, ISM, CONTINUUM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
D. Cesarsky et al., "INFRARED SPECTROPHOTOMETRY OF NGC-7023 WITH ISOCAM", Astronomy and astrophysics, 315(2), 1996, pp. 305-308

Abstract

We present spectrophotometric observations of the reflection nebula NGC 7023 obtained with the ISOCAM Circular Variable Filter (CVF) in thespectral range 5.15 to 16.5 mu m. Maps in the 16 mu m continuum emission and in the Unidentified Infrared Bands (UIBs) have been obtained. The continuum emission peaks at the dense interface between the surrounding molecular cloud and the inner photodissociated region. The wholespectrum (UIBs and continuum) becomes systematically harder closer tothe exciting star. Our observations show that it is entirely due to the same category of carriers, probably PAHs heated transiently by single photons, and that the systematic spectral changes inside NGC7023 are due to changes in the size distribution or/and ionization degree of these particles.

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Documento generato il 26/09/17 alle ore 09:14:34