منابع مشابه
Search for anions in molecular sources: C4H− detection in L1527
Aims. We present the results of a search for the negative ion C4H in various dark clouds, low mass star-forming regions and photondominated regions (PDRs). We have also searched for C6H, C2H and CN in some of the sources. Methods. The millimeter-wave observations were carried out with the IRAM-30m telescope. Results. We detect C4H, through the J = 9-8 and J = 10-9 rotational transitions, in the...
متن کاملHigh-resolution rotational spectroscopy of the carbon chain anions C3N-, C4H-, and C4D(-).
The rotational spectra of C(3)N(-), C(4)H(-), and C(4)D(-) have been measured at high-spectral resolution by Fourier transform microwave spectroscopy. For both C(3)N(-) and C(4)D(-), hyperfine structure in the lowest-J transitions has been resolved and measured to better than 0.1 ppm. The quadrupole coupling constants eQq for both anions are close to those of the neutral counterparts C(3)N and ...
متن کاملCooling dynamics of carbon cluster anions
A series of ion storage experiments on small carbon cluster anions was conducted to understand size-dependent cooling processes. The laser-induced delayed electron detachment time profile show clear even/odd alternation due to the presence of the electronic cooling. The time evolution of the internal energy distribution was simulated for Cn (n=4 to 7) with a common procedure taking vibrational ...
متن کاملRole of anions in the AuCl3-doping of carbon nanotubes.
The doping/dedoping mechanism of carbon nanotubes (CNTs) with AuCl(3) has been investigated with regard to the roles of cations and anions. Contrary to the general belief that CNTs are p-doped through the reduction of cationic Au(3+) to Au(0), we observed that chlorine anions play a more important role than Au cations in doping. To estimate the effects of Cl and Au on CNTs, the CNT film was ded...
متن کاملConstraining the Envelope Structure of L1527 IRS: Infrared Scattered Light Modeling
We model Spitzer Space Telescope observations of the Taurus Class 0 protostar L1527 IRS (IRAS 04368+2557) to provide constraints on its protostellar envelope structure. The nearly edge-on inclination of L1527 IRS, coupled with the highly spatially-resolved near to mid-infrared images of this object and the detailed IRS spectrum, enable us to constrain the outflow cavity geometry quite well, red...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/590468