Complex Molecules in Protoplanetary Disks
Abstract
Complex molecules are commonly detected in high- and low-mass star forming regions. In the past years, however, complex species have been detected in unexpected environments like photo-dominated regions. The great sensitivity and resolution power of ALMA has also allowed us to start detecting and resolving complex species in protopanetary disks. I will show recent observations of complex organic molecules in protoplanetary disks. A handful of COMs have been detected in disks so far, including CH3CN and HC3N (Öberg et al. 2015, Bergner et al. 2018), CH3OH (Walsh et al. 2016), and HCOOH (Favre et al. 2018). While the N-bearing species appear to be bright and more commonly detected, the O-bearing COMs are detected much less frequently. I will show spatially resolved multi-line ALMA observations of H2CO (Guzmán et al in prep.), a key intermediate in the formation of more complex O-bearing species in ices, in the famous HD163296 protoplanetary disk. Contrary to more complex species, like CH3OH, H2CO is readily observable in disks, and could thus be used to trace the cold organic reservoir.
- Publication:
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From Stars to Planets II - Connecting our understanding of star and planet formation
- Pub Date:
- June 2019
- Bibcode:
- 2019fstp.confE...4G