Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· References in the article
· Citations to the Article (4) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (5)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
The development of a protoplanetary disk from its natal envelope
Authors:
Watson, Dan M.; Bohac, C. J.; Hull, C.; Forrest, William J.; Furlan, E.; Najita, J.; Calvet, Nuria; D'Alessio, Paola; Hartmann, Lee; Sargent, B.; Green, Joel D.; Kim, Kyoung Hee; Houck, J. R.
Affiliation:
AA(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AB(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AC(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AD(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AE(NASA Astrobiology Institute, and,), AF(NOAO, Tucson, Arizona 85719, USA), AG(Department of Astronomy, University of Michigan, Ann Arbor, Michigan 48109, USA), AH(Centro de Radioastronomía y Astrofísica, UNAM, 58089 Morelia, Michoacán, Mexico), AI(Department of Astronomy, University of Michigan, Ann Arbor, Michigan 48109, USA), AJ(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AK(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AL(Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171, USA), AM(Center for Radiophysics and Space Research, Cornell University, Ithaca, New York 14853, USA)
Publication:
Nature, Volume 448, Issue 7157, pp. 1026-1028 (2007). (Nature Homepage)
Publication Date:
08/2007
Origin:
NATURE
Abstract Copyright:
(c) 2007: Nature
DOI:
10.1038/nature06087
Bibliographic Code:
2007Natur.448.1026W

Abstract

Class 0 protostars, the youngest type of young stellar objects, show many signs of rapid development from their initial, spheroidal configurations, and therefore are studied intensively for details of the formation of protoplanetary disks within protostellar envelopes. At millimetre wavelengths, kinematic signatures of collapse have been observed in several such protostars, through observations of molecular lines that probe their outer envelopes. It has been suggested that one or more components of the proto-multiple system NGC 1333-IRAS 4 (refs 1, 2) may display signs of an embedded region that is warmer and denser than the bulk of the envelope. Here we report observations that reveal details of the core on Solar System dimensions. We detect in NGC 1333-IRAS 4B a rich emission spectrum of H2O, at wavelengths 20-37μm, which indicates an origin in extremely dense, warm gas. We can model the emission as infall from a protostellar envelope onto the surface of a deeply embedded, dense disk, and therefore see the development of a protoplanetary disk. This is the only example of mid-infrared water emission from a sample of 30 class 0 objects, perhaps arising from a favourable orientation; alternatively, this may be an early and short-lived stage in the evolution of a protoplanetary disk.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints
    


SAO/NASA ADS Homepage | ADS Sitemap | Query Form | Basic Search | Preferences | HELP | FAQ