SIMBAD references

2006ApJS..166..211Z - Astrophys. J., Suppl. Ser., 166, 211-248 (2006/September-0)

Chandra monitoring observations of The Antennae galaxies. I. Catalog of source properties.


Abstract (from CDS):

We present the properties of the discrete X-ray sources detected in our monitoring survey of the Antennae galaxies with Chandra ACIS-S. We detect ∼70 sources down to a typical luminosity of 7x1037 ergs/s in each of the six monitoring observations. In the co-added observation (which has a total exposure of 411 ks) we detect a total of 120 sources down to a luminosity of 2-5x1037 ergs/s, depending on the local background. Fifteen sources have a strong extended component. Fourteen of the pointlike sources have luminosities above 1039 ergs/s, at least in one exposure, which qualifies them as ultraluminous X-ray sources (ULXs). Ten of the ULXs show long-term variability, while one is observed only once, suggesting that it is a transient source. We find that 25 sources exhibit long-term variability clearly associating them with accreting compact objects. Twenty-one sources also show spectral variability. However, their variability patterns are diverse, indicating that they belong to different source classes. Finally, we find a weak excess of hard sources at the low luminosities that we tentatively associate with pulsar X-ray binaries.

Abstract Copyright:

Journal keyword(s): galaxies: individual (NGC 4038/39) - Galaxies: Interactions - Galaxies: Peculiar - X-Rays: Binaries - X-Rays: Galaxies

VizieR on-line data: <Available at CDS (J/ApJS/166/211): table1.dat table3.dat table5.dat table6.dat table7.dat table8.dat table9.dat table10.dat table11.dat table12.dat table13.dat table14.dat table15.dat table16.dat table17.dat table18.dat table19.dat table20.dat table21.dat table22.dat>

Nomenclature: Table 3: [ZFB2006] NNN (Nos 1-120) = Table 5: CXCAnt JHHMMSS.s+DDMMSS N=120. End of Table 5: [ZFB2006] N D (Nos 1 D to 7 D).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 24

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