A Multiwavelength study of NLS1s galaxies from the Second Byurakan Survey

@article{Stepanian2003AMS,
  title={A Multiwavelength study of NLS1s galaxies from the Second Byurakan Survey},
  author={Jivan A. Stepanian and E Ben{\'i}tez and Yair Krongold and I. Cruz-Gonzalez and Jos'e Antonio de Diego and Vahram Chavushyan and R. Mujica and D. Dultzin-HacyanT. Verdugo},
  journal={arXiv: Astrophysics},
  year={2003}
}
In this work we present a multiwavelength study of narrow-line Seyfert 1 galaxies (NLS1s) discovered in the Second Byurakan Survey (SBS). The sample consists of 26 objects, which have $M_{B}\ge -23.0$, or $-19.9 > M_{B} > -23.0$, $0.0243 1$). The traditional linear correlation $L_x$ and $L_{op}$, which seems to hold for AGN in general, is found for SBS NLS1s. An anticorrelation between FWHM of ${H\beta}$ and the ratio of FeII$\lambda4570/H\beta$ is also observed. A weak correlation is found… 
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References

SHOWING 1-10 OF 47 REFERENCES
Narrow-line Seyfert 1 Galaxies from the Sloan Digital Sky Survey Early Data Release
We present a sample of 150 narrow-line Seyfert 1 galaxies (NLS1's) found within the Sloan Digital Sky Survey (SDSS) Early Data Release (EDR), only two of which were previously identified as such.
Radio properties of narrow-lined Seyfert 1 galaxies
We have observed seven narrow-linedd Seyfert 1 (NLS1) galaxies and one high-ionization Seyfert 2 galaxy with the Very Large Array (VLA). Combining these observations with published data, we summarize
Soft X-Ray Properties of Seyfert Galaxies in the ROSAT All-Sky Survey
We present the results of ROSAT All-Sky Survey observations of Seyfert and IR luminous galaxies from the extended 12 μm galaxy sample and the optically selected CfA sample. Detections are available
The ROSAT/IRAS Galaxy Sample Revisited
Galaxies in the ROSAT/IRAS sample were selected by their soft X-ray (0.1–2.4 keV) and far-infrared (λ = 60 μm) emission. The relatively large uncertainties in the original ROSAT and IRAS positions
A spectrophotometric atlas of narrow-line seyfert 1 galaxies
We have compiled a list of 83 objects classified as Narrow-Line Seyfert 1 galaxies (NLS1s) or known to have a broad Balmer component narrower than 2000 km/s. Out of these, 19 turned out to have been
Spectroscopy and Photometry of Stellar Objects from the Second Byurakan Survey
The results of spectroscopic observations of 202 stellar objects, and photometric observations of 171, from the Second Byurakan Survey (SBS) are reported. The SBS sample has proved to be a rich
The Soft X#Ray Properties of a Complete Sample of Optically Selected Quasars. II. Final Results
We present the Ðnal results of a ROSAT PSPC program to study the soft X-ray emission properties of a complete sample of low-z quasars. This sample includes all 23 quasars from the Bright Quasar
RBSC-NVSS SAMPLE. I. RADIO AND OPTICAL IDENTIFICATIONS OF A COMPLETE SAMPLE OF 1556 BRIGHT X-RAY SOURCES
We cross-identified the ROSAT Bright Source Catalog (RBSC) and the NRAO VLA Sky Survey (NVSS) to construct the RBSC-NVSS sample of the brightest X-ray sources (≥0.1 counts s-1~10-12 ergs cm-2 s-1 in
The soft x-ray properties of a complete sample of optically selected quasars. 1: First results
We present the —nal results of a ROSAT PSPC program to study the soft X-ray emission properties of a complete sample of low-z quasars. This sample includes all 23 quasars from the Bright Quasar
Slit spectra of second Byurakan survey galaxies
Slit spectra have been obtained at Lick Observatory of 18 Seyfert galaxy candidates from the Second Byurakan Spectral Sky Survey (SBS). The great majority of them turned out to be Seyfert galaxies.
...
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2
3
4
5
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