Silane in IRC +10216

Goldhaber, D. M.; Betz, Albert

doi:10.1086/184255

Cited by 113 publications

(51 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Since the pioneering detection of the silane molecule (SiH 4 ) in the circumstellar envelope of the carbon star IRC+10216 (CW Leo) (Barratt 1978;Goldhaber & Betz 1984), astronomers identified nine silicon-bearing molecules in the gas phase of cold molecular clouds, star-forming regions, and circumstellar envelopes of evolved carbons stars. These individual molecules can be arranged in four groups: simple diatomic molecules of the general chemical formula SiX (group 1), silicon carbides holding the generic composition SiC n (group 2), and silicon cyanides (group 3).…”

Section: Introductionmentioning

confidence: 99%

Infrared spectroscopic studies of hydrogenated silicon clusters

Kaiser

Osamura

2005

A&A

View full text Add to dashboard Cite

Abstract. Silicon-bearing species Si 2 H x (x = 1-6) are probable candidates in the circumstellar envelope of IRC+10216. We have observed several fundamentals of new silicon-containing radicals Si 2 H 3 and Si 2 H 5 in addition to the well-known Si 2 H 4 and Si 2 H 6 species from infrared spectroscopy in low temperature silane matrices at 10 K. Several infrared bands identify the Si 2 H x species and can be used to search for these molecules in the circumstellar envelope of IRC+10216. These infrared bands are confirmed by ab initio quantum chemical calculation as well as via corresponding infrared spectra detected for the deuterated species Si 2 D x .

show abstract

Section: Introductionmentioning

confidence: 99%

Infrared spectroscopic studies of hydrogenated silicon clusters

Kaiser

Osamura

2005

A&A

View full text Add to dashboard Cite

show abstract

“…Since the identification of silane (SiH 4 ) in the circumstellar envelope of the carbon star IRC +10216 (CW Leo) (Barrett 1978;Goldhaber & Betz 1984), astronomers have identified 10 silicon-bearing molecules in the gas phase of cold molecular clouds, star-forming regions, and circumstellar envelopes of evolved carbons stars. These species of molecules can be classified into simple diatomic molecules of the general chemical formula SiX (group 1), silicon carbides holding the generic composition SiC n (group 2), and silicon cyanides (group 3).…”

Section: Introductionmentioning

confidence: 99%

Laboratory Studies on the Infrared Absorptions of Hydrogenated Carbon‐Silicon Clusters: Directing the Identification of Organometallic SiCH_xSpecies toward IRC +10216

Kaiser

Osamura

2005

ApJ

View full text Add to dashboard Cite

Silicon-bearing species of the molecular formula SiCH x (x ¼ 1 6) are plausible candidates for organometallic molecules that might be present in the circumstellar envelope of IRC +10216. Combining matrix-isolation laboratory experiments with computed vibrational spectra of these molecules, we have observed several fundamentals of the new silicon-containing radicals SiCH 3 and SiCH 5 , in addition to the well-known SiCH 4 and SiCH 6 species, via infrared spectroscopy. These bands can now be used to search for hydrogen-deficient silicon-carbon-carrying molecules in the circumstellar envelope of the carbon star IRC +10216; the column densities of these species will yield valuable clues to the formation of silicon carbide molecules (SiC), together with their aggregates and partially hydrogenated clusters in the interstellar medium.

show abstract

“…The equilibrium constant for the astrochemical processes is applicable to the deuterium test. Since silicon carbide is thought to be an important component of the dust shells surrounding the carbon rich stars [19,20]. The observation of SiC in the dust shell of carbon stars suggests that the metal carbides such as FeC [21], AlC, CrC and all diatomic carbides having high ground state multiplicity may be present as well.…”

Section: Discussionmentioning

confidence: 99%

Spectroscopic Evaluation of Thermodynamic Parameters for Aluminum Based Diatomic Gas Molecules

Sriramachandran¹

2014

Int. J. Thermo

View full text Add to dashboard Cite

On account of the high accuracy with which spectroscopic data are obtained, thermodynamic parameters estimated from these data are more reliable than those obtained by direct thermal measurements. Spectroscopic data of aluminum based diatomic gas molecules (AlO, AlH, AlD, AlF, AlC) and partition function theory have been used to evaluate the thermodynamical parameters in the temperature range 100 -3000 0 K. Equilibrium constants for astrophysically important chemical process have been calculated using partition function theory. It is noticed that for AlC the heat capacity decreases exponentially after the critical temperature 1200 0 K.

show abstract

Silane in IRC +10216

Cited by 113 publications

References 0 publications

Infrared spectroscopic studies of hydrogenated silicon clusters

Infrared spectroscopic studies of hydrogenated silicon clusters

Laboratory Studies on the Infrared Absorptions of Hydrogenated Carbon‐Silicon Clusters: Directing the Identification of Organometallic SiCH_xSpecies toward IRC +10216

Spectroscopic Evaluation of Thermodynamic Parameters for Aluminum Based Diatomic Gas Molecules

Contact Info

Product

Resources

About

Silane in IRC +10216

Cited by 113 publications

References 0 publications

Infrared spectroscopic studies of hydrogenated silicon clusters

Infrared spectroscopic studies of hydrogenated silicon clusters

Laboratory Studies on the Infrared Absorptions of Hydrogenated Carbon‐Silicon Clusters: Directing the Identification of Organometallic SiCHxSpecies toward IRC +10216

Spectroscopic Evaluation of Thermodynamic Parameters for Aluminum Based Diatomic Gas Molecules

Contact Info

Product

Resources

About

Laboratory Studies on the Infrared Absorptions of Hydrogenated Carbon‐Silicon Clusters: Directing the Identification of Organometallic SiCH_xSpecies toward IRC +10216