Disk Frequencies and Lifetimes in Young Clusters

@article{HaischJr2001DiskFA,
  title={Disk Frequencies and Lifetimes in Young Clusters},
  author={Karl E. Haisch, Jr. and Elizabeth A. Lada and Charles J. Lada},
  journal={The Astrophysical Journal Letters},
  year={2001},
  volume={553},
  pages={L153 - L156}
}
We report the results of the first sensitive L-band survey of the intermediate-age (2.5-30 Myr) clusters NGC 2264, NGC 2362, and NGC 1960. We use JHKL colors to obtain a census of the circumstellar disk fractions in each cluster. We find disk fractions of 52% ± 10%, 12% ± 4%, and 3% ± 3% for the three clusters, respectively. Together with our previously published JHKL investigations of the younger NGC 2024, Trapezium, and IC 348 clusters, we have completed the first systematic and homogeneous… 
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References

SHOWING 1-10 OF 38 REFERENCES
Circumstellar Disks in the IC 348 Cluster
We report the results of the first sensitive L-band (3.4 μm) imaging survey of the young IC 348 cluster in Perseus. In conjunction with previously acquired JHK (1.25, 1.65, and 2.2 μm) observations,
A Mid-Infrared Study of the Young Stellar Population in the NGC 2024 Cluster
We present the results of the first broadband N (10.8 μm) survey of the NGC 2024 cluster. The mid-infrared data were combined with our previously published JHKL photometry to construct spectral
Infrared L-Band Observations of the Trapezium Cluster: A Census of Circumstellar Disks and Candidate Protostars
We report the results of a sensitive near-infrared JHKL imaging survey of the Trapezium cluster in Orion. We use the JHKL colors to obtain a census of infrared excess stars in the cluster. Of (391)
A Near-Infrared L-Band Survey of the Young Embedded Cluster NGC 2024
We present the results of the first sensitive L-band (3.4 μm) imaging study of the nearby young embedded cluster NGC 2024. Two separate surveys of the cluster were acquired in order to obtain a
Evidence for Circumstellar Disks around Young Brown Dwarfs in the Trapezium Cluster
We report the results of deep infrared observations of brown dwarf candidates in the Trapezium Cluster in Orion. Analysis of the JHK color-color diagram indicates that a large fraction (~65% ± 15%)
Accelerating Star Formation in Clusters and Associations
We use our own, recently developed pre-main-sequence evolutionary tracks to investigate the star formation histories of relatively nearby associations and clusters. We first employ published
The Pre-Main-Sequence Stars and Initial Mass Function of NGC 2264
UBVRI and Hα CCD photometry has been performed in the southern region of NGC 2264 around the Cone Nebula. A nearly complete list of pre–main-sequence (PMS) members in the cluster has been made from
Substantial reservoirs of molecular hydrogen in the debris disks around young stars
TLDR
Observations of the lowest rotational transitions of molecular hydrogen that reveal large quantities of gas in the debris disks around the stars β Pictoris, 49 Ceti and HD135344 are reported.
A sensitive 10-micron search for emission arising from circumstellar dust associated with solar-type pre-main-sequence stars
The presence and evolutionary timescales of circumstellar disks surrounding solar-type premain-sequence stars are studied using excess IR radiation above photospheric levels. The analysis is based on
2MASS Observations of the Perseus, Orion A, Orion B, and Monoceros R2 Molecular Clouds
We use the 2MASS Second Incremental Release Point Source Catalog to investigate the spatial distribution of young stars in the Perseus, Orion A, Orion B, and MonR2 molecular clouds. After subtracting
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