Spitzer and Magellan Observations of NGC 2264: A Remarkable Star-forming Core near IRS 2
- Autor(en)
- E. T. Young, P. S. Teixeira, C. J. Lada, J. Muzerolle, S. E. Persson, D. C. Murphy, N. Siegler, M. Marengo, O. Krause, A. K. Mainzer
- Abstrakt
We analyze Spitzer and Magellan observations of a star-forming core near
IRS 2 in the young cluster NGC 2264. The submillimeter source IRAS 12S1, previously believed to be an intermediate-mass Class 0 object is
shown to be a dense collection of embedded, low-mass stars. We argue
that this group of stars represents the fragmenting collapse of a dense,turbulent core, using a number of indicators of extreme youth. With
reasonable estimates for the velocity dispersion in the group, we
estimate a dynamical lifetime of only a few times 104 yr.Spectral energy distributions of stars in the core are consistent with
Class I or Class 0 assignments. We present observations of an extensive system of molecular hydrogen emission knots. The luminosity of the objects in the core region are consistent with roughly solar mass protostars.- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- University of Arizona, Harvard-Smithsonian Center for Astrophysics, California Institute of Technology (Caltech), Carnegie Institution for Science
- Journal
- The Astrophysical Journal: an international review of astronomy and astronomical physics
- Band
- 642
- Seiten
- 972-978
- ISSN
- 0004-637X
- DOI
- https://doi.org/10.1086/501227
- Publikationsdatum
- 05-2006
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103004 Astrophysik
- Schlagwörter
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/513b7c0d-b737-4cc1-92cd-3ff6dc646b12