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Windows Through the Dusty Disks Surrounding the Youngest Low-Mass Protostellar Objects

Cernicharo, J. and Noriega-Crespo, A. and Cesarsky, D. and Lefloch, B. and González-Alfonso, E. and Najarro, F. and Dartois, E. and Cabrit, S. (2000) Windows Through the Dusty Disks Surrounding the Youngest Low-Mass Protostellar Objects. Science, 288 (5466). pp. 649-652. ISSN 0036-8075. https://resolver.caltech.edu/CaltechAUTHORS:20141112-150248884

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Abstract

The formation and evolution of young low-mass stars are characterized by important processes of mass loss and accretion occurring in the innermost regions of their placentary circumstellar disks. Because of the large obscuration of these disks at optical and infrared wavelengths in the early protostellar stages (class 0 sources), they were previously detected only at radio wavelengths using interferometric techniques. We have detected with the Infrared Space Observatory the mid-infrared (mid-IR) emission associated with the class 0 protostar VLA1 in the HH1-HH2 region located in the Orion nebula. The emission arises in three wavelength windows (at 5.3, 6.6, and 7.5 micrometers) where the absorption due to ices and silicates has a local minimum that exposes the central part of the young protostellar system to mid-IR investigations. The mid-IR emission arises from a central source with a diameter of 4 astronomical units at an averaged temperature of ∼700 K, deeply embedded in a dense region with a visual extinction of 80 to 100 magnitudes.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://www.sciencemag.org/content/288/5466/649.abstractPublisherArticle
http://dx.doi.org/10.1126/science.288.5466.649DOIArticle
ORCID:
AuthorORCID
Noriega-Crespo, A.0000-0002-6296-8960
Additional Information:© 2000 American Association for the Advancement of Science. 22 November 1999; accepted 21 March 2000. We thank Spanish Direcciόn General de Enseñanza Superior and Plan Nacional de Investigaciόn Espacial for support under grants PB96-0883 and PB98-1351E.
Funders:
Funding AgencyGrant Number
Spanish Direcciόn General de Enseñanza Superior and Plan Nacional de Investigaciόn EspacialPB96-0883
Spanish Direcciόn General de Enseñanza Superior and Plan Nacional de Investigaciόn EspacialPB98-1351E
Issue or Number:5466
Record Number:CaltechAUTHORS:20141112-150248884
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20141112-150248884
Official Citation:Windows Through the Dusty Disks Surrounding the Youngest Low-Mass Protostellar Objects J. Cernicharo, A. Noriega-Crespo, D. Cesarsky, B. Lefloch, E. González-Alfonso, F. Najarro, E. Dartois, and S. Cabrit Science 28 April 2000: 288 (5466), 649-652. [DOI:10.1126/science.288.5466.649]
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51684
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:13 Nov 2014 00:32
Last Modified:09 Mar 2020 13:19

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