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Spectroscopic parameters for silacyclopropynylidene, SiC₂, from extensive astronomical observations toward CW Leo (IRC +10216) with the Herschel satellite

Waters, L. B. F. M.; Cernicharo, José; Teyssier, D. +5 more

A molecular line survey has been carried out toward the carbon-rich asymptotic giant branch star CW Leo employing the HIFI instrument on board of the Herschel satellite. Numerous features from 480 GHz to beyond 1100 GHz could be assigned unambiguously to the fairly floppy SiC₂ molecule. However, predictions from laboratory data exhibite…

Broadband analysis techniques for Herschel/HIFI spectral surveys of chemically rich star-forming regions

Bergin, Edwin A.; Lis, Dariusz C.; Phillips, Thomas G. +3 more

The Heterodyne Instrument for the Far Infrared (HIFI) aboard the Herschel Space Observatory has acquired high-resolution broadband molecular spectra of star-forming regions in a wavelength range that is mostly inaccessible from ground-based astronomical observatories. These spectral surveys provide new insight into the chemical composition and phy…