NOEMA observations of W3(H2O) and W3(OH) Virtual Observatory Resource

Authors
  1. Thompson W.E.
  2. Giese M.M.
  3. Lis D.C.
  4. Widicus Weaver S.L.
  5. Published by
    CDS
Abstract

Presented here are NOEMA interferometric observations of the neighboring hot cores W3(H_2_O) and W3(OH). The presence of two star-forming cores at different evolutionary stages within the same parent cloud presents a unique opportunity to study how the physics of the source and its evolutionary stage impact the chemistry. Through spectral analysis and imaging, we identify over 20 molecules in these cores. Most notably, we have detected HDO and CH_3_CH_2_CN in W3(OH), which were previously not detected in this core. We have imaged the molecular emission, revealing new structural features within these sources. W3(OH) shows absorption in a "dusty cocoon" surrounded by molecular emission. These observations also reveal extended emission that is potentially indicative of a low-velocity shock. From the information obtained herein, we have constructed column density and temperature maps for methanol and compared this information to the molecular images. By comparing the spatial distribution of molecules that may be destroyed at later stages of star formation, this work demonstrates the impact of physical environment on chemistry in star-forming regions at different evolutionary stages.

Keywords
  1. interferometry
  2. h-ii-regions
  3. radio-spectroscopy
  4. star-forming-regions
  5. molecular-physics
Bibliographic source Bibcode
2023ApJ...952...50T
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/952/50
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/952/50
Document Object Identifer DOI
doi:10.26093/cds/vizier.19520050

Access

Web browser access HTML
https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/952/50
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/952/50
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/952/50
IVOA Table Access TAP
https://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).

History

2025-09-26T13:28:17Z
Resource record created
2025-09-26T13:28:17Z
Created
2025-10-01T20:10:24Z
Updated

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr