Chemical inventory of the envelope of the Class I protostar L1551 IRS 5
P. Marchand, A. Coutens, J. Scigliuto, F. Cruz-S\'aenz de Miera, A., Andreu, J.-C. Loison, \'A. K\'osp\'al, P. \'Abrah\'am

TL;DR
This study presents a comprehensive chemical inventory of the Class I protostar L1551 IRS 5, revealing over 400 molecular lines and highlighting the chemical complexity influenced by episodic accretion events.
Contribution
It provides the first extensive spectral survey of L1551 IRS 5, identifying 75 molecular species and analyzing their physical conditions, thus advancing understanding of chemical processes in protostellar envelopes.
Findings
Detected over 400 molecular lines, including 75 species.
Identified molecules tracing both cold and warm regions.
Compared chemical composition with other protostars, revealing diversity.
Abstract
Episodic accretion in protostars leads to luminosity outbursts that end up heating their surroundings. This rise in temperature pushes the snow lines back, enabling the desorption of chemical species from dust grain surfaces, which may significantly alter the chemical history of the accreting envelope. However, a limited number of extensive chemical surveys of eruptive young stars have been performed thus far. In the present study, we carry out a large spectral survey of the binary Class I protostar L1551 IRS 5, known to be a FUor-like object, in the 3mm and 2mm bands with the IRAM-30m telescope. As a result, we detected more than 400 molecular lines. The source displays a great chemical richness with the detection of 75 species, including isotopologues. Among these species, there are 13 hydrocarbons, 25 N-bearing species, 30 O-bearing species, 15 S-bearing species, 12 deuterated…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
