SEYFERT GALAXIES AND THE HARD X-RAY BACKGROUND: ARTIFICIAL CHANDRA OBSERVATIONS OF z = 0.3 ACTIVE GALAXIES

@article{Peterson2005SEYFERTGA,
  title={SEYFERT GALAXIES AND THE HARD X-RAY BACKGROUND: ARTIFICIAL CHANDRA OBSERVATIONS OF z = 0.3 ACTIVE GALAXIES},
  author={Kelly Peterson and S. C. Gallagher and A Hornschemeier and Michael P. Muno and E. C. Bullard Ucla and Nasa Gsfc and Mit},
  journal={The Astronomical Journal},
  year={2005},
  volume={131},
  pages={133-142}
}
Deep X-ray surveys have resolved much of the X-ray background radiation below 2 keV into discrete sources, but the background above 8 keV remains largely unresolved. The obscured (type 2) active galactic nuclei (AGNs) that are expected to dominate the hard X-ray background have not yet been detected in sufficient numbers to account for the observed background flux. However, deep X-ray surveys have revealed large numbers of faint quiescent and starburst galaxies at moderate redshifts. In hopes… 

Figures and Tables from this paper

Variability-selected Low-luminosity Active Galactic Nuclei in the 4 Ms Chandra Deep Field-South
The 4 Ms Chandra Deep Field-South (CDF-S) and other deep X-ray surveys have been highly effective at selecting active galactic nuclei (AGNs). However, cosmologically distant low-luminosity AGNs
“Hidden” Seyfert 2 Galaxies in the Chandra Deep Field North
We have compared the X-ray-to-optical flux ratios (FX/Fopt) of absorbed active galactic nuclei (AGNs) in the Chandra Deep Field North (CDF-N) with those of nearby, optically classified Seyfert 2
X-ray selected starbursts in the Great Observatories Origins Deep Survey-North
We investigate claims that recent ultra-deep X-ray surveys are detecting starbursts at cosmologically interesting redshifts (z = 0‐1). We combine X-ray data from the 2 Ms Chandra Deep Field-North and
The X-ray emission of Lyman break galaxies
We present an analysis of the X-ray emission of a large sample of z∼3 Lyman break galaxies (LBGs), based on Chandra/ACIS observations of several LBG survey fields. A total of 24 LBGs are directly
The X-Ray Evolution of Early-Type Galaxies in the Extended Chandra Deep Field-South
We investigate the evolution over the last 6.3 Gyr of cosmic time (i.e., since z ≈ 0.7) of the average X-ray properties of early-type galaxies within the Extended Chandra Deep Field-South (E-CDF-S).
TRACING THE MASS-DEPENDENT STAR FORMATION HISTORY OF LATE-TYPE GALAXIES USING X-RAY EMISSION : RESULTS FROM THE CHANDRA DEEP FIELDS
We report on the X-ray evolution over the last 9 Gyr of cosmic history (i.e., since -->z = 1.4) of late-type galaxy populations in the Chandra Deep Field-North and Extended Chandra Deep Field-South
Variability-selected Low-luminosity Active Galactic Nuclei Candidates in the 7 Ms Chandra Deep Field-South
In deep X-ray surveys, active galactic nuclei (AGNs) with a broad range of luminosities have been identified. However, cosmologically distant low-luminosity AGN (LLAGN, $L_{\mathrm{X}} \lesssim
X-Ray Luminosity Functions of Normal Galaxies in the Great Observatories Origins Deep Survey
We present soft (0.5-2 keV) X-ray luminosity functions (XLFs) in the Great Observatories Origins Deep Survey (GOODS) fields derived for galaxies at z ~ 0.25 and 0.75. SED fitting was used to estimate
A deficit of ultraluminous X-ray sources in luminous infrared galaxies
We present results from a Chandra study of ultraluminous X-ray sources (ULXs) in a sample of 17 nearby (DL < 60 Mpc) luminous infrared galaxies (LIRGs), selected to have star formation rates (SFRs)
X-Ray Spectral Properties of the BAT AGN Sample
The 9-month Swift Burst Alert Telescope (BAT) catalog provides the first unbiased (NH < 1024 cm?2) look at local (z = 0.03) active galactic nuclei (AGNs). In this paper, we present the collected
...
1
2
...

References

SHOWING 1-10 OF 62 REFERENCES
“Hidden” Seyfert 2 Galaxies and the X-Ray Background
Obscured active galactic nuclei, which are classified optically as type 2 (narrow line) Seyfert galaxies in the local universe, are by far the most promising candidates for the origin of the hard
The X-Ray-derived Cosmological Star Formation History and the Galaxy X-Ray Luminosity Functions in the Chandra Deep Fields
The cosmological star formation rate in the combined Chandra Deep Fields North and South is derived from our X-ray luminosity function for galaxies in these deep fields. Mild evolution is seen up to
The Cosmic evolution of hard x-ray selected active galactic nuclei
We use highly spectroscopically complete deep and wide-area Chandra surveys to determine the cosmic evolution of hard X-ray–selected active galactic nuclei (AGNs). For the deep fields, we supplement
Chandra-SDSS Normal and Star-Forming Galaxies. I. X-Ray Source Properties of Galaxies Detected by the Chandra X-Ray Observatory in SDSS DR2
We have cross-correlated X-ray catalogs derived from archival Chandra X-Ray Observatory ACIS observations with a Sloan Digital Sky Survey Data Release 2 (DR2) galaxy catalog to form a sample of 42
The Seyfert-Starburst Connection in X-Rays. I. The Data
We analyze X-ray spectra and images of a sample of Seyfert 2 galaxies that unambiguously contain starbursts, based on their optical and UV characteristics. Although all sample members contain active
The HELLAS2XMM Survey. II. Multiwavelength Observations of P3: An X-Ray-bright, Optically Inactive Galaxy*
Recent X-ray surveys have clearly demonstrated that a population of optically dull, X-ray–bright galaxies is emerging at 2–10 keV fluxes of the order of 10 � 14 ergs cm � 2 s � 1 . Although they
Chandra Study of X-Ray Point Sources in the Early-Type Galaxy NGC 4552 (M89)
We present a Chandra ACIS study of the early-type galaxy NGC 4552. We detect 47 X-ray point sources, most of which are likely low-mass X-ray binaries (LMXBs), within four effective radii (Re). The
Nuclear Activity and Massive Star Formation in the Low-Luminosity Active Galactic Nucleus NGC 4303: Chandra X-Ray Observations
We present evidence of the coexistence of either an AGN or an ultraluminous X-ray source, together with a young superstellar cluster, in the central 3 pc of NGC 4303. The galaxy contains a
Lyman break galaxies in the Great Observatories Origins Deep Survey
We constrain the X-ray emission properties of Lyman break galaxies (LBGs) at z ≈ 3–6 using the ≈2 Ms Chandra Deep Field North and ≈1 Ms Chandra Deep Field South. Large samples of LBGs were discovered
The unresolved hard X-ray background: the missing source population implied by the Chandra and XMM-Newton deep fields
We extend our earlier work on X-ray source stacking in the deep XMM-Newton observation of the Lockman Hole, to the 2-Ms Chandra Deep Field North (CDF-N) and the 1-Ms Chandra Deep Field South (CDF-S).
...
1
2
3
4
5
...