scholarly journals The Mid-Infrared Instrument for theJames Webb Space Telescope, IV: The Low-Resolution Spectrometer

2015 ◽  
Vol 127 (953) ◽  
pp. 623-632 ◽  
Author(s):  
Sarah Kendrew ◽  
Silvia Scheithauer ◽  
Patrice Bouchet ◽  
Jerome Amiaux ◽  
Ruymán Azzollini ◽  
...  
Keyword(s):  
Low Resolution ◽  
Mid Infrared ◽  
Space Telescope ◽  
Resolution Spectrometer

scholarly journals The mid-infrared instrument for the James Webb Space Telescope: performance and operation of the Low-Resolution Spectrometer

2016 ◽  
Author(s):  
Sarah Kendrew ◽  
Silvia Scheithauer ◽  
Patrice Bouchet ◽  
Jerome Amiaux ◽  
Ruymán Azzollini ◽  
...  
Keyword(s):  
Low Resolution ◽  
Mid Infrared ◽  
Space Telescope ◽  
James Webb Space Telescope ◽  
Resolution Spectrometer

scholarly journals The Mid-Infrared Instrument for theJames Webb Space Telescope, VI: The Medium Resolution Spectrometer

2015 ◽  
Vol 127 (953) ◽  
pp. 646-664 ◽  
Author(s):  
Martyn Wells ◽  
J.-W. Pel ◽  
Alistair Glasse ◽  
G. S. Wright ◽  
Gabby Aitink-Kroes ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Space Telescope ◽  
Medium Resolution ◽  
Resolution Spectrometer

scholarly journals Classification of C-Rich Stars According to Their Mid-IR Signatures

1989 ◽  
Vol 106 ◽  
pp. 54-54
Author(s):  
R. Papoular
Keyword(s):  
Relative Abundance ◽  
Morphological Analysis ◽  
Low Resolution ◽  
Colour Temperature ◽  
Resolution Spectrometer

The spectra of the IRAS low-resolution-spectrometer in tape form have been submitted to a systematic morphological analysis, using classical quantitative discriminants (O.Gal et al. 1987, A & A 183, 29; Y. Baron et al. 1987, A & A 186, 271; R. Papoular 1988, A & A , in press). Spectra which display the 11.5μ feature of SiC fall into 4 classes of average spectral excesses. They differ by the width of the SiC feature and by the presence or absence of secondary features at ~8.6, ~11.7 and ~12.8μm.A majority of these spectra have a lower 12-25μm colour temperature than do most optically selected C-stars, presumably because of thicker dust envelopes. While most spectra belong to LRS class 4n, 20% of the total were found among the brightest 20% of the much larger class In, suggesting that the relative abundance of C-stars is much higher than previously assumed.

scholarly journals An IRAS-based search for new dusty WCL Wolf-Rayet stars

1995 ◽  
Vol 163 ◽  
pp. 359-362
Author(s):  
Martin Cohen
Keyword(s):  
Point Source ◽  
Optical Spectroscopy ◽  
Infrared Astronomy ◽  
Low Resolution ◽  
Full Resolution ◽  
Resolution Spectrometer ◽  
Colour Indices ◽  
Point Source Catalog

I have examined all InfraRed Astronomy Satellite (IRAS) data relevant to the 173 galactic Wolf-Rayet (WR) stars in an updated catalogue provided by van der Hucht (priv. comm.), including the 13 stars newly discovered by Shara et al. (1991). Using the exact coordinates given in these lists, I have examined the IRAS Point Source Catalog (PSC), the Faint Source Catalog, Faint Source Reject Catalog, and generated 1-dimensional spatial profiles (“ADDSCAN”s), and 2-dimensional full-resolution images (“FRESCO”s). The goal was to assemble the best set of observed IRAS colour indices for different WR types, in particular for known dusty WCL objects. These colour indices define zones in the IRAS colour-colour plane. By searching the PSC for otherwise unassociated sources that satisfy these colours, I have identified potential new WR candidates, too faint to have been recognized in previous optical searches. I have extracted these candidates' IRAS Low Resolution Spectrometer (LRS) data and compared the spectra with the highly characteristic LRS shape for known dusty WCL stars. Any surviving candidates must now be examined by optical spectroscopy. This work represents a much more rigorous and exhaustive version of the LRS study that identified IRAS 17380-3031 (WR98a) as the first new WR (WC9) star discovered by IRAS (Cohen et al. 1991).

The MIRI medium resolution spectrometer for the James Webb Space Telescope

2006 ◽  
Author(s):  
M. Wells ◽  
D. Lee ◽  
A. Oudenhuysen ◽  
P. Hastings ◽  
J.-W. Pel ◽  
...  
Keyword(s):  
Space Telescope ◽  
James Webb Space Telescope ◽  
Medium Resolution ◽  
Resolution Spectrometer
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