How to calculate molecular column density. Interstellar isomers: the importance of bonding energy differences. Observations of formic acid in hot molecular cores. Early science from GOTHAM: Project overview, methods, and the detection of interstellar propargyl cyanide (HCCCH 2CN) in TMC-1. An unbiased ALMA spectral survey of the LkCa 15 and MWC 480 protoplanetary disks. Detecting weak spectral lines in interferometric data through matched filtering. First detection of gas-phase methanol in a protoplanetary disk. Non-detection of HC 11N towards TMC-1: constraining the chemistry of large carbon-chain molecules. A new reference chemical composition for TMC-1. DiskJockey: protoplanetary disk modeling for dynamical mass derivationAstrophys. 2018 census of interstellar, circumstellar, extragalactic, protoplanetary disk, and exoplanetary molecules. Here we highlight the detection of HC 11N, the largest cyanopolyyne in the interstellar medium. We have applied this method to data from the ongoing GOTHAM (GBT Observations of TMC-1: Hunting Aromatic Molecules) Green Bank Telescope large programme, discovering six new interstellar species. Towards this end, we present a method for detecting and characterizing new molecular species in single-dish observations towards sources with sparse line spectra. Understanding the connection between these two molecular reservoirs is critical to understanding the interstellar carbon cycle, but will require pushing the boundaries of how far we can probe molecular complexity while still retaining observational specificity. 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, such as polycyclic aromatic hydrocarbons best studied in bulk via infrared and optical observations, is slowly being bridged.
0 kommentar(er)
