The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Candidate Type II Quasars from the Sloan Digital Sky Survey. I. Selection and Optical Properties of a Sample at 0.3<Z<0.83
Open accessAbstract
Type II quasars are the long-sought luminous analogs of type 2 (narrow emission line) Seyfert galaxies, suggested by unification models of active galactic nuclei (AGNs) and postulated to account for an appreciable fraction of the cosmic hard X-ray background. We present a sample of 291 type II AGNs at redshifts 0.3 < Z < 0.83 from the spectroscopic data of the Sloan Digital Sky Survey. These objects have narrow (FWHM < 2000 km s -1 ), high equivalent width emission lines with high-ionization line ratios. We describe the selection procedure and discuss the optical properties of the sample. About 50% of the objects have [O III] λ5008 line luminosities in the range 3 × 10 8 –10 10 L ⊙ , comparable to those of luminous (-27 < M B < -23) quasars; this, along with other evidence, suggests that the objects in the luminous subsample are type II quasars.
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The Sloan Digital Sky Survey Photometric System
Fukugita, M., Ichikawa, T., Gunn, J. E., Doi, M., Shimasaku, K., & Schneider, D. P. (1996) · The Astronomical Journal · doi:10.1086/117915 · Cited by 3,033
Self-citationThe Sloan Digital Sky Survey Photometric Camera
Gunn, J. E., Carr, M., Rockosi, C., Sekiguchi, M., Berry, K., Elms, B., de Haas, E., Ivezić, Ž., Knapp, G., Lupton, R., et al. (1998) · The Astronomical Journal · doi:10.1086/300645 · Cited by 1,692
Self-citationAstrometric Calibration of the Sloan Digital Sky Survey
Pier, J. R., Munn, J. A., Hindsley, R. B., Hennessy, G. S., Kent, S. M., Lupton, R. H., & Ivezić, Ž. (2003) · The Astronomical Journal · doi:10.1086/346138 · Cited by 908
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A CATALOG OF QUASAR PROPERTIES FROM SLOAN DIGITAL SKY SURVEY DATA RELEASE 7
Shen, Y., Richards, G. T., Strauss, M. A., Hall, P. B., Schneider, D. P., Snedden, S., Bizyaev, D., Brewington, H., Malanushenko, V., Malanushenko, E., et al. (2011) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/194/2/45 · Cited by 1,517
Self-citationThe Second Data Release of the Sloan Digital Sky Survey
Abazajian, K., Adelman-McCarthy, J. K., Agüeros, M. A., Allam, S. S., Anderson, K., Anderson, S. F., Annis, J., Bahcall, N. A., Baldry, I. K., Bastian, S., et al. (2004) · The Astronomical Journal · doi:10.1086/421365 · Cited by 1,162
Self-citationObscured and Unobscured Active Galactic Nuclei in the Spitzer Space Telescope First Look Survey
Lacy, M., Storrie‐Lombardi, L. J., Sajina, A., Appleton, P. N., Armus, L., Chapman, S. C., Choi, P. I., Fadda, D., Fang, F., Frayer, D. T., et al. (2004) · The Astrophysical Journal Supplement Series · doi:10.1086/422816 · Cited by 687
Bolton, A. S., Schlegel, D. J., Aubourg, É., Bailey, S., Bhardwaj, V., Brownstein, J. R., Burles, S., Chen, Y.-M., Dawson, K., Eisenstein, D. J., et al. (2012) · The Astronomical Journal · doi:10.1088/0004-6256/144/5/144 · Cited by 667
Self-citationActive galactic nuclei: what’s in a name?
Padovani, P., Alexander, D. M., Assef, R. J., De Marco, B., Giommi, P., Hickox, R. C., Richards, G. T., Smolčić, V., Hatziminaoglou, E., Mainieri, V., et al. (2017) · The Astronomy and Astrophysics Review · doi:10.1007/s00159-017-0102-9 · Cited by 666
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Metadata
- Authors
- Zakamska, N. L., Strauss, M. A., Krolik, J. H., Collinge, M. J., Hall, P. B., Hao, L., Heckman, T. M., Ivezi, E., Richards, G. T., Schlegel, D. J., Schneider, D. P., Strateva, I., Vanden Berk, D. E., Anderson, S. F., & Brinkmann, J.
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 2003-11
- Volume
- 126
- Issue
- 5
- Pages
- 2125-2144
- ISSN
- 0004-6256 (ISSN-L)
- 1538-3881
- OpenAlex
- W2071315938
- Cited by
- 363
- References
- 3
- FWCI
- 10.63
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Zakamska, N. L., Strauss, M. A., Krolik, J. H., Collinge, M. J., Hall, P. B., Hao, L., Heckman, T. M., Ivezi, E., Richards, G. T., Schlegel, D. J., Schneider, D. P., Strateva, I., Vanden Berk, D. E., Anderson, S. F., & Brinkmann, J. (2003). Candidate Type II Quasars from the Sloan Digital Sky Survey. I. Selection and Optical Properties of a Sample at 0.3<Z<0.83. The Astronomical Journal. https://doi.org/10.1086/378610
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