SIMBAD references

2004AJ....127.2659R - Astron. J., 127, 2659-2673 (2004/May-0)

Chandra X-ray observations of young clusters. I. NGC 2264 data.

RAMIREZ S.V., REBULL L., STAUFFER J., HEARTY T., HILLENBRAND L., JONES B., MAKIDON R., PRAVDO S., STROM S. and WERNER M.

Abstract (from CDS):

We present results of a Chandra observation of a field in NGC 2264. The observations were taken with the ACIS-I camera with an exposure time of 48.1 ks. We present a catalog of 263 sources, which includes X-ray luminosity, optical and infrared photometry, and X-ray variability information. We found 41 variable sources, 14 of which have a flarelike light curve, and two of which have a pattern of a steady increase or decrease over a 10 hr period. The optical and infrared photometry for the stars identified as X-ray sources are consistent with most of these objects being pre-main-sequence stars with ages younger than 3 Myr.

Abstract Copyright: ∼

Journal keyword(s): Stars: Activity - Stars: Pre-Main-Sequence - X-rays: stars

VizieR on-line data: <Available at CDS (J/AJ/127/2659): table1.dat table4.dat table5.dat>

Nomenclature: Table 1, Col(1): [RRS2004] NGC 2264 NNN N=263 among (Nos 1-311) = Table 1, Col(2): CXORRS JHHMMSS.s+DDMMSS N=263.

Simbad objects: 265

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