The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.
A Survey of [CLC][ITAL]z[/ITAL][/CLC] ] 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at [CLC][ITAL]z[/ITAL][/CLC] ] 6
Open accessAbstract
We present the discovery of three new quasars at z > 6 in ∼ 1300 deg 2 of Sloan Digital Sky Survey imaging data, J114816.64+525150.3 ( z = 6.43), J104845.05+463718.3 ( z = 6.23), and J163033.90+401209.6 ( z = 6.05). The first two objects have weak Lyα emission lines; their redshifts are determined from the positions of the Lyman break. They are only accurate to ∼0.05 and could be affected by the presence of broad absorption line systems. The last object has a Lyα strength more typical of lower redshift quasars. Based on a sample of six quasars at z > 5.7 that cover 2870 deg 2 presented in this paper and in Paper I, we estimate the comoving density of luminous quasars at z ∼ 6 and M 1450 < -26.8 to be (8 ± 3) × 10 -10 Mpc -3 (for H 0 = 50 km s -1 Mpc -1 , Ω = 1). Hubble Space Telescope imaging of two z > 5.7 quasars and high-resolution, ground-based images (seeing ∼0 4) of three additional z > 5.7 quasars show that none of them is gravitationally lensed. The luminosity distribution of the high-redshift quasar sample suggests the bright-end slope of the quasar luminosity function at z ∼ 6 is shallower than Ψ ∝ L -3.5 (2 σ), consistent with the absence of strongly lensed objects.
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Cites
Schlegel, D. J., Finkbeiner, D. P., & Davis, M. (1998) · The Astrophysical Journal · doi:10.1086/305772 · Cited by 15,126
The Sloan Digital Sky Survey: Technical Summary
York, D. G., Adelman, J., Anderson, Jr., Anderson, S. F., Annis, J., Bahcall, N. A., Bakken, J. A., Barkhouser, R., Bastian, S., Berman, E., et al. (2000) · The Astronomical Journal · doi:10.1086/301513 · Cited by 10,366
Self-citationA Fundamental Relation between Supermassive Black Holes and Their Host Galaxies
Ferrarese, L., & Merritt, D. (2000) · The Astrophysical Journal · doi:10.1086/312838 · Cited by 4,417
The Demography of Massive Dark Objects in Galaxy Centers
Magorrian, J., Tremaine, S., Richstone, D., Bender, R., Bower, G., Dressler, A., Faber, S. M., Gebhardt, K., Green, R., Grillmair, C., et al. (1998) · The Astronomical Journal · doi:10.1086/300353 · Cited by 4,007
A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion
Gebhardt, K., Bender, R., Bower, G., Dressler, A., Faber, S. M., Filippenko, A. V., Green, R., Grillmair, C., Ho, L. C., Kormendy, J., et al. (2000) · The Astrophysical Journal · doi:10.1086/312840 · Cited by 3,671
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 · cited 1×
“…2.5 m telescope and a largeformat CCD camera (Gunn et al. 1998) at the Apache Point Observatory in New Mexico to obtain images in five broad bands (u, g, r, i, and z, centered at 3551, 4686, 6166, 7480, and 8932 Å, respectively; Fukugita et al. 1996) in 10,000 deg2 of high Galactic latitude sky.”
InfluentialSelf-citationSloan Digital Sky Survey: Early Data Release
Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. J., Connolly, A. J., Eisenstein, D. J., Frieman, J. A., Hennessy, G. S., et al. (2002) · The Astronomical Journal · doi:10.1086/324741 · Cited by 2,390
Self-citationA Relationship Between Nuclear Black Hole Mass And Galaxy Velocity Dispersion
Gebhardt, K., Bender, R., Bower, G., Dressler, A., Faber, S. M., Filippenko, A. V., Green, R., Grillmair, C. J., Ho, L. C., Kormendy, J., et al. (2000) · Cited by 2,108
The 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-citationSmith, J. A., Tucker, D. L., Kent, S., Richmond, M. W., Fukugita, M., Ichikawa, T., Ichikawa, S.-I., Jorgensen, A. M., Uomoto, A., Gunn, J. E., et al. (2002) · The Astronomical Journal · doi:10.1086/339311 · Cited by 1,621
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SEGUE: A SPECTROSCOPIC SURVEY OF 240,000 STARS WITH g = 14-20
Yanny, B., Rockosi, C., Newberg, H. J., Knapp, G. R., Adelman-McCarthy, J. K., Alcorn, B., Allam, S., Prieto, C. A., An, D., Anderson, K. S. J., et al. (2009) · The Astronomical Journal · doi:10.1088/0004-6256/137/5/4377 · Cited by 1,162
“…science program consists of constructing a large three-dimensional map of the universe and constraining cosmological models; see, e.g. Becker et al. (2001); Blanton et al. (2003b); Fan et al. (2003); Tremonti et al. (2004); Tegmark et al. (2004); Eisenstein et al. (2005); Richards et al. (2006).”
BackgroundSelf-citationObservational Constraints on Cosmic Reionization
Fan, X., Carilli, C. L., & Keating, B. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.44.051905.092514 · Cited by 788
Self-citationThe Assembly of the First Massive Black Holes
Inayoshi, K., Visbal, E., & Haiman, Z. (2020) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-120419-014455 · Cited by 665
Self-citationAstrophysics with the Laser Interferometer Space Antenna
Amaro-Seoane, P., Andrews, J., Arca Sedda, M., Askar, A., Baghi, Q., Balasov, R., Bartos, I., Bavera, S. S., Bellovary, J., Berry, C. P. L., et al. (2023) · Living Reviews in Relativity · doi:10.1007/s41114-022-00041-y · Cited by 609
Self-citationDirect Cosmological Simulations of the Growth of Black Holes and Galaxies
Di Matteo, T., Colberg, J., Springel, V., Hernquist, L., & Sijacki, D. (2008) · The Astrophysical Journal · doi:10.1086/524921 · Cited by 555
Metadata
- Authors
- Fan, X., Strauss, M. A., Schneider, D. P., Becker, R. H., White, R. L., Haiman, Z., Gregg, M., Pentericci, L., Grebel, E. K., Narayanan, V. K., Loh, Y.-S., Richards, G. T., Gunn, J. E., Lupton, R. H., Knapp, G. R., Ivezić, Ž., Brandt, W. N., Collinge, M., Hao, L., Harbeck, D., Prada, F., Schaye, J., Strateva, I., Zakamska, N., Anderson, S., Brinkmann, J., Bahcall, N. A., Lamb, D. Q., Okamura, S., Szalay, A., & York, D. G.
- Venue
- The Astronomical Journal
- Publisher
- American Astronomical Society
- Published
- 2003-04
- Volume
- 125
- Issue
- 4
- Pages
- 1649-1659
- ISSN
- 0004-6256 (ISSN-L)
- 1538-3881
- OpenAlex
- W1613124003
- Cited by
- 773
- References
- 35
- FWCI
- 50.45
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: A Survey of [CLC][ITAL]z[/ITAL][/CLC] ] 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at [CLC][ITAL]z[/ITAL][/CLC] ] 6. https://app.cochat.ai/papers/10.1086/368246
- The paper
- Fan, X., Strauss, M. A., Schneider, D. P., Becker, R. H., White, R. L., Haiman, Z., Gregg, M., Pentericci, L., Grebel, E. K., Narayanan, V. K., Loh, Y.-S., Richards, G. T., Gunn, J. E., Lupton, R. H., Knapp, G. R., Ivezić, Ž., Brandt, W. N., Collinge, M., Hao, L., . . . York, D. G. (2003). A Survey of [CLC][ITAL]z[/ITAL][/CLC] ] 5.7 Quasars in the Sloan Digital Sky Survey. II. Discovery of Three Additional Quasars at [CLC][ITAL]z[/ITAL][/CLC] ] 6. The Astronomical Journal. https://doi.org/10.1086/368246
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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