High-resolution images in Cep-A HW2 region Virtual Observatory Resource

Authors
  1. Comito C.
  2. Schilke P.
  3. Endesfelder U.
  4. Jimenez-Serra I.
  5. Martin-Pintado J.
  6. Published by
    CDS
Abstract

Due to its relatively small distance (725pc), the Cepheus A East star-forming region is an ideal laboratory to study massive star formation processes. Based on its morphology, it has been suggested that the flattened molecular gas distribution around the YSO HW2 may be a 350-AU-radius massive protostellar disk. The goal of our work is to ascertain the nature of this structure. We have employed the Plateau de Bure Interferometer to acquire (sub-)arcsecond-resolution imaging of high-density and shock tracers, such as methyl cyanide (CH3CN) and silicon monoxide (SiO), towards the HW2 position. On the 1" scale, the flattened distribution of molecular gas around HW2 appears to be due to the projected superposition, on the plane of the sky, of at least three protostellar objects, of which at least one is powering a molecular outflow at a small angle with respect to the line of sight. The presence of a protostellar disk around HW2 is not ruled out.

Keywords
  1. astrophysical-masers
  2. radio-astronomy
  3. interstellar-medium
  4. interferometry
Bibliographic source Bibcode
2007A&A...469..207C
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/469/207
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+A/469/207
Document Object Identifer DOI
doi:10.26093/cds/vizier.34690207

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/469/207
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/469/207
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/469/207
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
Web browser access HTML
https://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/469/207

History

2007-08-19T10:21:13Z
Resource record created
2007-08-19T10:21:13Z
Created
2018-10-02T11:01:10Z
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