Interstellar glycolamide: A comprehensive rotational study and an astronomical search in Sgr B2(N)
arXiv:2006.13634 · doi:10.1051/0004-6361/202038149
Abstract
Glycolamide is a glycine isomer and also one of the simplest derivatives of acetamide (e.g., one hydrogen atom is replaced with a hydroxyl group), which is a known interstellar molecule. Using a battery of state of the art rotational spectroscopic techniques in the frequency and time domain, around 1500 transitions have been newly assigned. Based on the reliable frequency predictions, we report a radioastronomical search for glycolamide in the well known high-mass star forming region Sgr B2(N) using the ALMA imaging spectral line survey ReMoCA. We also searched for glycolamide toward Sgr B2(N) with the Effelsberg radio telescope. We report the nondetection of glycolamide toward this source with an abundance at least six and five times lower than that of acetamide and glycolaldehyde, respectively. Our astrochemical model suggests that glycolamide may be present in this source at a level just below the upper limit, which was derived from the EMoCA survey. We could also not detect the molecule in the region's extended molecular envelope, which was probed with the Effelsberg telescope. We find an upper limit to its column density that is similar to the column densities obtained earlier for acetamide and glycolaldehyde with the Green Bank Telescope.
The article will be published as a regular paper in Astronomy and Astrophysics (Forthcoming article since 19 May 2020)
References in corpus (7)
- Trigonometric Parallaxes Of High-Mass Star Forming Regions: Our View Of The Milky Way
- The largest oxigen bearing organic molecule repository
- A Search for Propylene Oxide and Glycine in Sagittarius B2 (LMH) and Orion
- A Search for Biomolecules in Sagittarius B2 (LMH) with the ATCA
- Spectral imaging of the Sagittarius B2 region in multiple 3-mm molecular lines with the Mopra telescope
- Non-Thermal Continuum toward SGRB2(N-LMH)
- Small-scale physical and chemical structure of diffuse and translucent molecular clouds along the line of sight to Sgr B2