| |
 |
| Paper: |
Herschel-SPIRE FTS Spectroscopy of Evolved Stars |
| Volume: |
445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants |
| Page: |
607 |
| Authors: |
Wesson, R.; Cernicharo, J.; Barlow, M. J.; Matsuura, M.; Decin, L.; Groenewegen, M. A. T.; Polehampton, E. T.; Agundez, M.; Cohen, M.; Daniel, F.; Exter, K. M.; Gear, W. K.; Gomez, H. L.; Hargrave, P. C.; Imhof, P.; Ivison, R. J.; Leeks, S. J.; Lim, T. L.; Olofsson, G.; Savini, G.; Sibthorpe, B.; Swinyard, B. M.; Ueta, T.; Witherick, D. K.; Yates, J. A. |
| Abstract: |
We present far-infrared and submillimetre spectra of evolved objects
observed with the SPIRE Fourier-transform spectrometer on
board the Herschel Space Observatory. The observations cover
wavelengths 195–670 μm, a region of the electromagnetic spectrum
hitherto difficult to study. The far-infrared spectra of these objects
are rich and complex. We determine physical conditions from observations
of the rotational lines of several molecules, and present initial large
velocity gradient models for AFGL 618. We detect water in AFGL 2688
for the first time, and confirm its presence in AFGL 618 in both ortho
and para forms. In addition, we detect of the J = 1–0 line of CH+
in NGC 7027. Finally, we present new Herschel–SPIRE spectroscopic observations of both O-rich and C-rich evolved sources,
and discuss preliminary investigations into their physical conditions. |
|
|
|
|
|
