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Circumstellar Disks in Very Young Embedded Clusters

Published online by Cambridge University Press:  06 January 2014

Naibí Mariñas ,
Elizabeth A. Lada ,
Paula S. Teixeira  and
Charles J. Lada
Naibí Mariñas
Affiliation:
Astronomy Department, University of Florida, Gainesville, FL 32611
Elizabeth A. Lada
Affiliation:
Astronomy Department, University of Florida, Gainesville, FL 32611
Paula S. Teixeira
Affiliation:
University of Vienna, Tuerkenschanzstrasse 17, 1180, Vienna, Austria
Charles J. Lada
Affiliation:
Harvard-Smithsonian CFA, Cambridge, MA
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Abstract

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We used FLAMINGOS near-IR photometry and spectroscopy and Spitzer mid-IR photometry to study disk fractions in the 1 to 2 Myr old NGC2264 clusters. We find that stars with masses < 0.3 solar masses have lower disk fractions than stars of solar mass or higher at these early ages. We also find that most disks disappear within the first 4 Myr, which is consistent with previous studies of disk lifetimes. Our study suggests that either some very low mass stars form without disks or that their disks are less massive and/or colder than predicted from models and not detected with Spitzer/Flamingos sensitivities.

Keywords

stars: pre-main-sequencestars: circumstellar matter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S299: Exploring the Formation and Evolution of Planetary Systems , June 2013 , pp. 165 - 166
Copyright
Copyright © International Astronomical Union 2013 

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