Point Sources from aSpitzerIRAC Survey of the Galactic Center
نویسندگان
چکیده
منابع مشابه
A Statistical Analysis of Point-like Sources in Chandra Galactic Center Survey
Chandra Galactic Center Survey detected nearly 1000 X-ray point-like sources in the 2×0.8 sky region around the Galactic Center. The corresponding area is about 280 × 110 pc at a distance of 8 kpc. In this paper, we study the spatial and luminosity distributions of these sources according to their spectral properties. Eighteen bright sources detected are used to fit jointly an absorbed power-la...
متن کاملStatistical Analysis of Point-like Sources in Chandra Galactic Center Survey
Chandra Galactic Center Survey detected ∼ 800 X-ray pointlike sources in the 2 × 0.8 sky region around the Galactic Center. In this paper, we study the spatial and luminosity distributions of these sources according to their spectral properties. Fourteen bright sources detected are used to fit jointly an absorbed power-law model, from which the power-law photon index is determined to be ∼2.5. A...
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Infrared absorption lines of H3 , including the metastable R(3,3) l line, have been observed toward eight bright infrared sources associated with hot and massive stars located in and between the Galactic Center Cluster and the Quintuplet Cluster 30 pc to the east. The absorption lines with high velocity dispersion arise in the Galaxy’s Central Molecular Zone (CMZ) as well as in foreground spira...
متن کاملA DEEP Chandra CATALOG OF X-RAY POINT SOURCES TOWARD THE GALACTIC CENTER
We present a catalog of 2357 point sources detected during 590 ks of Chandra observations of the 17-by-17 arcminute field around Sgr A. This field encompasses a physical area of 40 by 40 pc at a distance of 8 kpc. The completeness limit of the sample at the Galactic center is 10 erg s (2.0–8.0 keV), while the detection limit is an order of magnitude lower. The 281 sources detected below 1.5 keV...
متن کاملRadial Distribution of X-ray Point Sources near the Galactic Center
We present the logN-logS and spatial distributions of X-ray point sources in seven Galactic Bulge (GB) fields within 4 from the Galactic Center (GC). We compare the properties of 1159 X-ray point sources discovered in our deep (100 ks) Chandra observations of three low extinction Window fields near the GC with the X-ray sources in the other GB fields centered around Sgr B2, Sgr C, the Arches Cl...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2008
ISSN: 0067-0049,1538-4365
DOI: 10.1086/524015