SIMBAD references

2003ApJ...582..382F - Astrophys. J., 582, 382-397 (2003/January-1)

Chandra X-ray observation of the Orion Nebula Cluster. I. Detection, identification, and determination of X-ray luminosities.

FLACCOMIO E., DAMIANI F., MICELA G., SCIORTINO S., HARNDEN F.R.Jr, MURRAY S.S. and WOLK S.J.

Abstract (from CDS):

In this first of two companion papers on the Orion Nebula Cluster (ONC), we present our analysis of a 63 ks Chandra HRC-I observation that yielded 742 X-ray detections within the 30'x30' field of view. To facilitate our interpretation of the X-ray image, here we collect a multiwavelength catalog of nearly 2900 known objects in the region by combining 17 different catalogs from the recent literature. We define two reference groups: an infrared sample, containing all objects detected in the K band, and an optical sample comprising low-extinction, well-characterized ONC members. We show for both samples that field object contamination is generally low. Our X-ray sources are primarily low-mass ONC members. The detection rate for optical sample stars increases monotonically with stellar mass from zero at the brown dwarf limit to ∼100% for the most massive stars but shows a pronounced dip between 2 and 10 M. We determine LXand LX/Lbolfor all stars in our optical sample and utilize this information in our companion paper to study correlations between X-ray activity and other stellar parameters.

Abstract Copyright:

Journal keyword(s): Galaxy: Open Clusters and Associations: Individual: Name: Orion Nebula Cluster - X-Rays: Stars

VizieR on-line data: <Available at CDS (J/ApJ/582/382): table1.dat table2.dat table4.dat>

Nomenclature: Table 1: [FDM2003] X NNN (Nos 1-742). Table 4: [FDM2003] Opt NNN (Nos 1-696).

CDS comments: p.391: source "n" = LBLS n (= [FDM2003] X 272).

Simbad objects: 645

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2020.11.27-14:08:09

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