We found four series of harmonically related lines in IRC+ 10216 with the Yebes 40 m and
IRAM 30 m telescopes. The first series corresponds to a molecule with a rotational constant …

We report the detection of magnesium dicarbide, MgC 2, in the laboratory at centimeter
wavelengths and assign 24 MgC 2, 25 MgC 2, and 26 MgC 2 to 14 unidentified lines in the …

We report on the detection of a series of six lines in the ultra-deep Q-band integration
towards IRC+ 10216 carried out with the Yebes 40 m telescope, which are in harmonic …

Context. The dusty winds of cool evolved stars are a major contributor of the newly
synthesised material enriching the Galaxy and future generations of stars. However, the …

Continuing Q-band (31–50 GHz) integrations on IRC+ 10216 with the Yebes 40 m telescope
have now reached sub-millikelvin noise with hundreds of new lines arising above an …

We study the internal and external alignment of carbonaceous grains in the interstellar
medium (ISM) within the Radiative Torque (RAT) paradigm. For internal alignment (IA), we …

We report the first interstellar identification of protonated acetylene, C 2 H 3+, a fundamental
hydrocarbon, in the z= 0.89 molecular absorber toward the gravitationally lensed quasar …

The presence of carbon-chain molecules in the interstellar medium (ISM) has been known
since the early 1970s and> 130 such species have been identified to date, making up∼ …

We present an unbiased molecular line survey toward the carbon-rich circumstellar
envelope CIT 6 carried out between 90 and 116 GHz with the Arizona Radio Observatory 12 …

We present a study of CH 3 CH 2 CCH, CH 3 CH 2 CN, CH 2 CHCCH, and CH 2 CHCN in
TMC-1 using the QUIJOTE line survey. We confirm the presence of CH 3 CH 2 CCH in TMC …