The ALMA-PILS survey: The sulphur connection between protostars and comets: IRAS 16293-2422 B and 67P/Churyumov-Gerasimenko

Abstract

The evolutionary past of our Solar System can be pieced together by comparing analogous low-mass protostars with remnants of our Protosolar Nebula - comets. Sulphur-bearing molecules may be unique tracers of the joint evolution of the volatile and refractory components. ALMA Band 7 data from the large unbiased Protostellar Interferometric Line Survey (PILS) are used to search for S-bearing molecules in the outer disc-like structure, 60 au from IRAS 16293-2422 B, and are compared with data on 67P/C-G stemming from the ROSINA instrument aboard Rosetta. Species such as SO${}_2$, SO, OCS, CS, H${}_2$CS, H${}_2$S and CH${}_3$SH are detected via at least one of their isotopologues towards IRAS 16293-2422 B. The search reveals a first-time detection of OC${}^{33}$S towards this source and a tentative first-time detection of C${}^{36}$S towards a low-mass protostar. The data show that IRAS 16293-2422 B contains much more OCS than H${}_2$S in comparison to 67P/C-G; meanwhile, the SO/SO${}_2$ ratio is in close agreement between the two targets. IRAS 16293-2422 B has a CH${}_3$SH/H${}_2$CS ratio in range of that of our Solar System (differences by a factor of 0.7-5.3). It is suggested that the levels of UV radiation during the initial collapse of the systems may have varied and have potentially been higher for IRAS 16293-2422 B due to its binary nature; thereby, converting more H${}_2$S into OCS. It remains to be conclusively tested if this also promotes the formation of S-bearing complex organics. Elevated UV levels of IRAS 16293-2422 B and a warmer birth cloud of our Solar System may jointly explain the variations between the two low-mass systems.

Accepted for publication in MNRAS; 47 pages, 43 figures, 6 tables

References in corpus (35)

• The chemical composition of the Sun
• Observations of the Icy Universe
• The Birth Environment of the Solar System
• Complex organic molecules in the interstellar medium: IRAM 30 m line survey of Sagittarius B2(N) and (M)
• The ALMA Protostellar Interferometric Line Survey (PILS): First results from an unbiased submillimeter wavelength line survey of the Class 0 protostellar binary IRAS 16293-2422 with ALMA
• Does IRAS 16293-2422 have a hot core? Chemical inventory and abundance changes in its protostellar environment
• Detection of the simplest sugar, glycolaldehyde, in a solar-type protostar with ALMA
• On the reservoir of sulphur in dark clouds : chemistry and elemental abundance reconciled
• The Gould's Belt Distances Survey (GOBELINS) I. Trigonometric parallax distances and depth of the Ophiuchus complex
• TIMASSS: The IRAS16293-2422 Millimeter And Submillimeter Spectral Survey. I. Observations, calibration and analysis of the line kinematics
• Low sulfur depletion in the Horsehead PDR
• Infalling-Rotating Motion and Associated Chemical Change in the Envelope of IRAS 16293-2422 Source A Studied with ALMA
• Sulphur chemistry in the envelopes of massive young stars
• The ALMA-PILS survey: First detections of deuterated formamide and deuterated isocyanic acid in the interstellar medium
• Exploring molecular complexity with ALMA (EMoCA): Alkanethiols and alkanols in Sagittarius B2(N2)
• The first ALMA view of IRAS 16293-2422: Direct detection of infall onto source B and high-resolution kinematics of source A
• The ALMA-PILS survey: First detections of ethylene oxide, acetone and propanal toward the low-mass protostar IRAS 16293-2422
• Spectroscopic characterization and detection of Ethyl Mercaptan in Orion
• The ALMA-PILS survey: Detection of CH${}_3$NCO toward the low-mass protostar IRAS 16293-2422 and laboratory constraints on its formation
• Arcsecond resolution images of the chemical structure of the low-mass protostar IRAS 16293-2422
• Isotopic ratios of H, C, N, O, and S in comets C/2012 F6 (Lemmon) and C/2014 Q2 (Lovejoy)
• Comparative chemistry of diffuse clouds III: sulfur-bearing molecules
• A new study of an old sink of sulfur in hot molecular cores: the sulfur residue
• Water deuteration and ortho-to-para nuclear spin ratio of H2 in molecular clouds formed via the accumulation of HI gas
• The ALMA Band 9 receiver - Design, construction, characterization, and first light
• A primordial origin for molecular oxygen in comets: A chemical kinetics study of the formation and survival of O${}_2$ ice from clouds to disks
• The ALMA-PILS survey: Formaldehyde deuteration in warm gas on small scales toward IRAS 16293-2422 B
• Modelling the sulphur chemistry evolution in Orion KL
• Detection of CH3SH in protostar IRAS 16293-2422
• The sulfur depletion problem: upper limits on the H2S2, HS2, and S2 gas-phase abundances toward the low-mass warm core IRAS16293-2422
• The effect of a strong external radiation field on protostellar envelopes in Orion
• Sulfur Volcanism on Io
• ALMA reveals a candidate hot and compact disk around the O-type protostar IRAS 16547$-$4247
• Exploring Io's atmospheric composition with APEX: first measurement of 34SO2 and tentative detection of KCl
• Warm gas towards young stellar objects in Corona Australis - Herschel/PACS observations from the DIGIT key programme

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• Carbon chain diversity in L1544 and IRAS 16293-2422: an astrochemical pathfinder study for the SKAO
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