ChandraX-Ray Observations of Young Clusters. I. NGC 2264 Data | Zendy

Solange Ramírez | Zendy; L. M. Rebull | Zendy; J. R. Stauffer | Zendy; Thomas Hearty | Zendy; Lynne A. Hillenbrand | Zendy; B. F. Jones | Zendy; Russell B. Makidon | Zendy; S. H. Pravdo | Zendy; S. E. Strom | Zendy; M. W. Werner | Zendy

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ChandraX-Ray Observations of Young Clusters. I. NGC 2264 Data

Author(s) -

Solange Ramírez,

L. M. Rebull,

J. R. Stauffer,

Thomas Hearty,

Lynne A. Hillenbrand,

B. F. Jones,

Russell B. Makidon,

S. H. Pravdo,

S. E. Strom,

M. W. Werner

Publication year - 2004

Publication title -

the astronomical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.61

H-Index - 271

eISSN - 1538-3881

pISSN - 0004-6256

DOI - 10.1086/383290

Subject(s) - photometry (optics) , physics , astrophysics , stars , light curve , astronomy , infrared , luminosity , variable star , acis , data archive , galaxy , database , computer science

We present results of a Chandra observation of a field in NGC 2264. Theobservations were taken with the ACIS-I camera with an exposure time of 48.1ks. We present a catalog of 263 sources, which includes X-ray luminosity,optical and infrared photometry and X-ray variability information. We found 41variable sources, 14 of which have a flare-like light curve, and 2 of whichhave a pattern of a steady increase or decrease over a 10 hour period. Theoptical and infrared photometry for the stars identified as X-ray sources areconsistent with most of these objects being pre-main sequence stars with agesyounger than 3 Myr.Comment: 36 pages, 13 figures, AJ in press (May 2004

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