L483: Warm Carbon-Chain Chemistry Source Harboring Hot Corino Activity

Abstract

The Class 0 protostar, L483, has been observed in various molecular lines in the 1.2 mm band at a sub-arcsecond resolution with ALMA. An infalling-rotating envelope is traced by the CS line, while a very compact component with a broad velocity width is observed for the CS, SO, HNCO, NH${}_2$CHO, and HCOOCH${}_3$ lines. Although this source is regarded as the warm carbon-chain chemistry (WCCC) candidate source at a 1000 au scale, complex organic molecules characteristic of hot corinos such as NH${}_2$CHO and HCOOCH${}_3$ are detected in the vicinity of the protostar. Thus, both hot corino chemistry and WCCC are seen in L483. Although such a mixed chemical character source has been recognized as an intermediate source in previous single-dish observations, we here report the first spatially-resolved detection. A kinematic structure of the infalling-rotating envelope is roughly explained by a simple ballistic model with the protostellar mass of 0.1--0.2 $M_{\odot }$ and the radius of the centrifugal barrier (a half of the centrifugal radius) of 30--200 au, assuming the inclination angle of 80\degr\ (0\degr\ for a face-on). The broad line emission observed in the above molecules most likely comes from the disk component inside the centrifugal barrier. Thus, a drastic chemical change is seen around the centrifugal barrier.

arXiv commentaccepted to ApJ

References in corpus (27)

• The UMIST database for astrochemistry 2012
• Physical structure and CO abundance of low-mass protostellar envelopes
• Tracing the Mass during Low-Mass Star Formation. I. Submillimeter Continuum Observations
• Infalling-Rotating Motion and Associated Chemical Change in the Envelope of IRAS 16293-2422 Source A Studied with ALMA
• Probing the inner 200 AU of low-mass protostars with the Submillimeter Array: Dust and organic molecules in NGC1333-IRAS2A
• Embedded Protostars in the Dust, Ice, and Gas In Time (DIGIT) Key Program: Continuum SEDs, and an Inventory of Characteristic Far-Infrared Lines from PACS Spectroscopy
• First results from the CALYPSO IRAM-PdBI survey. II. Resolving the hot corino in the Class 0 protostar NGC 1333-IRAS2A
• Alignment Between Flattened Protostellar Infall Envelopes and Ambient Magnetic Fields
• Chemical differentiation in a prestellar core traces non-uniform illumination
• Imaging chemical differentiation around the low-mass protostar L483-mm
• Discovery of interstellar ketenyl (HCCO), a surprisingly abundant radical
• The census of complex organic molecules in the solar type protostar IRAS16293-2422
• Discovery of a Hot Corino in the Bok Globule B335
• The solar type protostar IRAS16293-2422: new constraints on the physical structure
• A Search for Carbon-Chain-Rich Cores in Dark Clouds
• A Substellar-Mass Protostar and its Outflow of IRAS 15398-3359 Revealed by Subarcsecond-Resolution Observations of H${}_2$CO and CCH
• Vertical Structure of the Transition Zone from Infalling Rotating Envelope to Disk in the Class 0 Protostar, IRAS04368+2557
• Subarcsecond Analysis of Infalling-Rotating Envelope around the Class I Protostar IRAS 04365+2535
• Geometric and Kinematic Structure of the Outflow/Envelope System of L1527 Revealed by Subarcsecond-resolution Observation of CS
• Carbon Chains and Methanol toward Embedded Protostars
• ASTE Observations of Warm Gas in Low-mass Protostellar Envelopes: Different Kinematics between Submillimeter and Millimeter Lines
• Interferometric observation of the L483 molecular core
• MUSTANG 3.3 Millimeter Continuum Observations of Class 0 Protostars
• Probing the effects of external irradiation on low-mass protostars through unbiased line surveys
• Dynamical structure of the inner 100 AU of the deeply embedded protostar IRAS 16293-2422
• An Association in the Aquila Star-Forming Region: High Resolution Infrared Spectroscopy of T Tauri Stars
• Depletion of CCS in a Candidate Warm-Carbon-Chain-Chemistry Source L483

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• Astrochemical evolution along star formation: Overview of the IRAM Large Program ASAI
• The Perseus ALMA Chemistry Survey (PEACHES). I. The Complex Organic Molecules in Perseus Embedded Protostars
• The census of interstellar complex organic molecules in the Class I hot corino of SVS13-A
• CORINOS I: JWST/MIRI Spectroscopy and Imaging of a Class 0 protostar IRAS 15398-3359
• ALMA chemical survey of disk-outflow sources in Taurus (ALMA-DOT) VI: Accretion shocks in the disk of DG Tau and HL Tau
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• Hot Corinos Chemical Diversity: Myth or Reality?
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• Rotation in the NGC 1333 IRAS 4C Outflow
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• The search for high-mass protostars with ALMA revealed up to kilo-parsec scales (SPARKS): I. Indication for a centrifugal barrier in the environment of a single high-mass envelope
• Chemical Variation among Protostellar Cores: Dependence on Prestellar Core Conditions
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• The Co-evolution of Disk and Star in Embedded Stages: The Case of the Very Low-mass Protostar
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• FAUST III. Misaligned rotations of the envelope, outflow, and disks in the multiple protostellar system of VLA 1623$-$2417
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• Formation of the simplest amide in molecular clouds: formamide (NH${}_2$CHO) and its derivatives in H${}_2$O-rich and CO-rich interstellar ice analogs upon VUV irradiation
• Chemical and Physical Characterization of the Isolated Protostellar Source CB68: FAUST. IV
• The connection between warm carbon chain chemistry and interstellar irradiation of star-forming cores
• Molecular Distributions of the Protostellar Envelope and the Outflow of IRAS 15398-3359: Principal Component Analysis
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• Photoprocessing of formamide ice: route towards prebiotic chemistry in space
• FAUST VII. Detection of A Hot Corino in the Prototypical Warm Carbon-Chain Chemistry Source IRAS 15398-3359
• FERIA: Flat Envelope Model with Rotation and Infall under Angular Momentum Conservation
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• The HH 212 interstellar laboratory: astrochemistry as a tool to reveal protostellar disks on Solar System scales around a rising Sun
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• Molecular Distributions of the Disk/Envelope System of L483: Principal Component Analysis for the Image Cube Data
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• Evolution of Chemistry in the envelope of Hot Corinos (ECHOS). I. Extremely young sulphur chemistry in the isolated Class 0 object B335
• The Twisted Magnetic Field of the Protobinary L483
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• The chemical nature of Orion protostars: Are ORANGES different from PEACHES? ORANGES II
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