2000A&A...363.1115K


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.31CET12:49:36

2000A&A...363.1115K - Astronomy and Astrophysics, volume 363, 1115-1122 (2000/11-3)

Absorption spectra of Mg-rich Mg-Fe and Ca pyroxenes in the mid- and far-infrared regions.

KOIKE C., TSUCHIYAMA A., SHIBAI H., SUTO H., TANABE T., CHIHARA H., SOGAWA H., MOURI H. and OKADA K.

Abstract (from CDS):

Absorption spectra of the pyroxene group have been measured in mid and far infrared wavelengths. The samples are crystalline pyroxenes (enstatite, diopside, and natural pyroxene) and amorphous pyroxenes (enstatite and diopside glass). Especially, the synthetic pyroxenes such as orthoenstatite, clinoenstatite and diopside are pure and high-quality crystalline samples. For the first time we have detected very strong and sharp peaks at about 60-70µm in the pyroxenes. The spectra of the pyroxenes are useful to identify the observed peaks, which have been detected by ISO on top of the broad amorphous silicates spectra of comets, circumstellar dust shells around both young stars and evolved stars. Compared to the broad features of amorphous pyroxenes, the crystalline pyroxenes show many sharp peaks in the mid and far infrared regions. Chemical composition, crystal structure, hydration, and temperature affect these spectra. The diopside may contribute to the emission feature of the planetary nebulae NGC 6302 in the far infrared region.

Abstract Copyright:

Journal keyword(s): ISM: dust, extinction - infrared: ISM: lines and bands - stars: circumstellar matter - ISM: planetary nebulae: individual: NGC 6302

Simbad objects: 5

goto View the reference in ADS

Number of rows : 5

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 302821 sg* 10 23 19.4807452802 -59 32 04.680572222   10.59 9.17     A7Ie 78 1
2 HD 100546 Be* 11 33 25.4404858122 -70 11 41.239343121   6.71 6.30   6.64 A0VaekB8_lB 658 1
3 WRAY 15-1269 PN 14 59 53.4814028450 -54 18 07.524725528 12.12 12.17 11.64 11.63   [WC11] 229 0
4 NGC 6302 PN 17 13 44.339 -37 06 10.95   7.1 10.10     ~ 760 1
5 HD 184738 PN 19 34 45.2337512278 +30 30 58.951476338   10.41 10.44     [WC9] 922 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2000A&A...363.1115K and select 'bookmark this link' or equivalent in the popup menu


2020.10.31-12:49:36

© Université de Strasbourg/CNRS

    • Contact