Astrochemistry lies at the nexus of astronomy, chemistry, and molecular physics. On the
basis of precise laboratory data, a rich collection of more than 200 familiar and exotic …

Unidentified infrared emission bands are ubiquitous in many astronomical sources. These
bands are widely, if not unanimously, attributed to collective emissions from polycyclic …

Polycyclic aromatic hydrocarbons (PAHs) have long been invoked in the study of interstellar
and protostellar sources, but the unambiguous identification of any individual PAH has …

To date, 241 individual molecular species, composed of 19 different elements, have been
detected in the interstellar and circumstellar medium by astronomical observations. These …

Much like six-membered rings, five-membered rings are ubiquitous in organic chemistry,
frequently serving as the building blocks for larger molecules, including many of biochemical …

We present laboratory rotational spectroscopy of five isomers of cyanoindene (2-, 4-, 5-, 6-,
and 7-cyanoindene) using a cavity Fourier transform microwave spectrometer operating …

Using radio observations with the Green Bank Telescope, evidence has now been found for
a second five-membered ring in the dense cloud Taurus Molecular Cloud-1 (TMC-1). Based …

Context. Many molecules observed in the interstellar medium are thought to result from the
thermal desorption of ices. Parameters such as the desorption energy and pre-exponential …

As the inventory of interstellar molecules continues to grow, the gulf between small species,
whose individual rotational lines can be observed with radio telescopes, and large ones …

We have conducted an extensive search for nitrogen-, oxygen-, and sulfur-bearing
heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband …