244 citations · 1.3k across the 18 of their papers we have counts for
18 papers
A sub-ppm upper limit on the cosmological variations of the fine structure constant alpha
S. Muller, A. Beelen, M. Guelin +9
Absorption spectroscopy toward high-redshift quasars provides strong constraints on the putative variation of fundamental constants of physics on cosmological time scales. The subm…
Protonated acetylene in the z=0.89 molecular absorber toward PKS1830-211
S. Muller, R. Le Gal, E. Roueff +7
We report the first interstellar identification of protonated acetylene, C2H3+, a fundamental hydrocarbon, in the z=0.89 molecular absorber toward the gravitationally lensed quasar…
Discovery of the first Ca-bearing molecule in space: CaNC
J. Cernicharo, L. Velilla-Prieto, M. Agúndez +6
We report on the detection of calcium isocyanide, CaNC, in the carbon-rich evolved star IRC+10216. We derived a column density for this species of (2.00.5)10 cm…
OH+ and H2O+ absorption toward PKS1830-211
S. Muller, H. S. P. M"uller, J. H. Black +13
We report the detection of OH+ and H2O+ in the z=0.89 absorber toward the lensed quasar PKS1830-211. The abundance ratio of OH+ and H2O+ is used to quantify the molecular hydrogen…
Isotopic ratios at z=0.68 from molecular absorption lines toward B 0218+357
S. H. J. Wallstrom, S. Muller, M. Guelin
Isotopic ratios of heavy elements are a key signature of the nucleosynthesis processes in stellar interiors. The contribution of successive generations of stars to the metal enrich…
Probing non polar interstellar molecules through their protonated form: Detection of protonated cyanogen (NCCNH+)
M. Agundez, J. Cernicharo, P. de Vicente +19
Cyanogen (NCCN) is the simplest member of the series of dicyanopolyynes. It has been hypothesized that this family of molecules can be important constituents of interstellar and ci…