An X-Ray Census of Young Stars in the Chamaeleon I North Cloud

@article{Lawson2004AnXC,
  title={An X-Ray Census of Young Stars in the Chamaeleon I North Cloud},
  author={Eric D. Feigelson Warrick A. Lawson},
  journal={The Astrophysical Journal},
  year={2004},
  volume={614},
  pages={267-283}
}
Sensitive X-ray imaging surveys provide a new and effective tool to establish the census of pre-main-sequence (PMS) stars in nearby young stellar clusters. We report here a deep Chandra X-Ray Observatory observation of PMS stars in the Chamaeleon I North cloud, achieving a limiting luminosity of log Lt 27 ergs s-1 (0.5-8 keV band) in a 0.8 × 0.8 pc2 region. Of the 107 X-ray sources, 37 are associated with Galactic stars of which 27 are previously recognized cloud members. These include three… Expand
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References

SHOWING 1-10 OF 65 REFERENCES
ROSAT X-ray detection of a young brown dwarf in the chamaeleon I dark cloud
Photometry and spectroscopy of the object Cha Halpha 1, located in the Chamaeleon I star-forming cloud, show that it is a approximately 10(6)-year-old brown dwarf with spectral type M7.5 to M8 and… Expand
Soft X-ray observations of pre-main sequence stars in the chamaeleon dark cloud
Einstein IPC observations of the nearby Chamaeleon I star forming cloud show 22 well-resolved soft X-ray sources in a 1x2 deg region. Twelve are associated with H-alpha emission line pre-main… Expand
Chandra Study of Young Stellar Objects in the NGC 1333 Star-forming Cloud
NGC 1333, a highly active star formation region within the Perseus molecular cloud complex, has been observed with the ACIS-I detector on board the Chandra X-Ray Observatory. In our image with a… Expand
X-Ray-emitting Young Stars in the Orion Nebula
The Orion Nebula Cluster and the molecular cloud in its vicinity have been observed with the ACIS-I detector on board the Chandra X-ray Observatory with 23 hr exposure in two observations. We detect… Expand
X-RAYS IN THE ORION NEBULA CLUSTER: CONSTRAINTS ON THE ORIGINS OF MAGNETIC ACTIVITY IN PRE-MAIN-SEQUENCE STARS
A recent observation of the Orion Nebula Cluster with the ACIS instrument on board the Chandra X-Ray Observatory detected 1075 sources, 525 of which are pre-main-sequence (PMS) stars with measured… Expand
ROSAT X-Ray Study of the Chamaeleon I Dark Cloud. I. The Stellar Population
Two soft X-ray images of the Chamaeleon I star-forming cloud obtained with the ROSAT Position Sensitive Proportional Counter are presented. Seventy reliable, and 19 possible additional, X-ray sources… Expand
Chandra Observations of High-Mass Young Stellar Objects in the Monoceros R2 Molecular Cloud
We observed the Monoceros R2 molecular cloud with the ACIS-I array on board the Chandra X-Ray Observatory. From the central 32 × 32 region, we detect 154 sources above the detection limit of ~5 ×… Expand
A Deep Near-Infrared Survey of the Chamaeleon I Dark Cloud Core
We have carried out a deep near-infrared imaging survey to search for low-mass young stellar objects (YSOs) in the densest star-forming core of the Chamaeleon I dark cloud. Our observations cover an… Expand
X-Ray Properties of the Young Stellar and Substellar Objects in the IC 348 Cluster: The Chandra View
We explore the X-ray properties of the young stellar and substellar objects in the open cluster IC 348 as seen in our deep Chandra X-Ray Observatory Advanced CCD Imaging Spectrometer image. First, we… Expand
A Deep Chandra X-Ray Observation of the Embedded Young Cluster in NGC 2024
We present results of a sensitive 76 ks Chandra observation of the young stellar cluster in NGC 2024, lying at a distance of ~415 pc in the Orion B giant molecular cloud. Previous infrared… Expand
...
1
2
3
4
5
...