Dissecting a site of massive star formation:IRAS 23033+5951

DOIResolve DOI: http://doi.org/10.1017/S174392130700138X
AuthorSearch for: ; Search for:
Proceedings titleProceedings of the International Astronomical Union
ConferenceTriggered Star Formation in a Turbulent ISM, International Astronomical Union. Symposium no. 237, 14-18 August,2006,Prague, Czech Republic
Pages155159; # of pages: 5
AbstractWe present new BIMA observations of the massive star-forming region IRAS 23033+ 5951 in Cepheus. 3 mm continuum observations reveal that the source decomposes into at least three dusty clumps, each of which has sufficient mass to form a massive star. The most massive clump has a mass of about 225 M and appears to house the massive protostar which drives the prominent CO outflow seen in the region. Our H13CN 1–0, N2H+ 1–0, and H13CO+ 1–0 maps show that the three continuum sources are all embedded in an elongated structure whose long axis is perpendicular to the outflow. Both H13CO+ and H13CN peak at the geometric center of this structure, which lies between the two prominent continuum peaks. All three lines – H13CN, H13CO+, and N2H+–show the same velocity gradient along the long axis of their integrated intensity maps. Although the approximately 90,000 AU length of the elongated structure prohibits a disk interpretation, the fact that the dynamical and gas masses of the structure differ by only a factor of a few suggests that the structure may be partially rotationally supported. We also detect a signature of infall toward the center of the structure, seen as an asymmetrically blue HCO+ line where its optically thin isotope, H13CO+, is symmetric and single-peake
Publication date
PublisherCambridge University Press
AffiliationNRC Herzberg Institute of Astrophysics; National Research Council Canada; National Science Infrastructure
Peer reviewedNo
NPARC number13053185
Export citationExport as RIS
Report a correctionReport a correction
Record identifier5c3fd954-f9d5-491d-9169-72094d729de9
Record created2009-11-25
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)