메뉴 건너뛰기




Volumn 464, Issue 7287, 2010, Pages 380-383

Dust-free quasars in the early Universe

Author keywords

[No Author keywords available]

Indexed keywords

DUST; EXTRATERRESTRIAL MATTER; ULTRAVIOLET RADIATION; X-RAY;

EID: 77949731480     PISSN: 00280836     EISSN: 14764687     Source Type: Journal    
DOI: 10.1038/nature08877     Document Type: Article
Times cited : (123)

References (30)
  • 1
    • 4544295232 scopus 로고    scopus 로고
    • A survey of z. 5.7 quasars in the sloan digital sky survey. III. Discovery of five additional quasars
    • Fan, X. et al. A survey of z. 5.7 quasars in the Sloan Digital Sky Survey. III. Discovery of five additional quasars. Astron. J. 128, 515-522 (2004).
    • (2004) Astron. J. , vol.128 , pp. 515-522
    • Fan, X.1
  • 2
    • 34548634995 scopus 로고    scopus 로고
    • Gemini near-infrared spectroscopy of luminous z, 6 quasars: Chemical abundances, black hole masses, and Mg II absorption
    • Jiang, L. et al. Gemini near-infrared spectroscopy of luminous z, 6 quasars: chemical abundances, black hole masses, and Mg II absorption. Astron. J. 134, 1150-1161 (2007).
    • (2007) Astron. J. , vol.134 , pp. 1150-1161
    • Jiang, L.1
  • 3
    • 33747052848 scopus 로고    scopus 로고
    • Chandra observations of the highest redshift quasars from the Sloan Digital Sky Survey
    • Shemmer, O. et al. Chandra observations of the highest redshift quasars from the Sloan Digital Sky Survey. Astrophys. J. 644, 86-99 (2006).
    • (2006) Astrophys. J. , vol.644 , pp. 86-99
    • Shemmer, O.1
  • 4
    • 33845958876 scopus 로고    scopus 로고
    • Probing the evolution of infrared properties of z, 6 quasars: Spitzer observations
    • Jiang, L. et al. Probing the evolution of infrared properties of z, 6 quasars: Spitzer observations. Astron. J. 132, 2127-2134 (2006).
    • (2006) Astron. J. , vol.132 , pp. 2127-2134
    • Jiang, L.1
  • 5
    • 33749254456 scopus 로고    scopus 로고
    • Constraining the evolution of the ionizing background and the epoch of reionization with z, 6 quasars. II. A sample of 19 quasars
    • Fan, X. et al. Constraining the evolution of the ionizing background and the epoch of reionization with z, 6 quasars. II. A sample of 19 quasars. Astron. J. 132, 117-136 (2006).
    • (2006) Astron. J. , vol.132 , pp. 117-136
    • Fan, X.1
  • 6
    • 40249110287 scopus 로고    scopus 로고
    • Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey
    • Willott, C. J. et al. Four quasars above redshift 6 discovered by the Canada-France High-z Quasar Survey. Astron. J. 134, 2435-2450 (2007).
    • (2007) Astron. J. , vol.134 , pp. 2435-2450
    • Willott, C.J.1
  • 7
    • 39049157694 scopus 로고    scopus 로고
    • Black hole masses and enrichment of z, 6 SDSS quasars
    • Kurk, J. D. et al. Black hole masses and enrichment of z, 6 SDSS quasars. Astrophys. J. 669, 32-44 (2007).
    • (2007) Astrophys. J. , vol.669 , pp. 32-44
    • Kurk, J.D.1
  • 8
    • 0041160509 scopus 로고    scopus 로고
    • Unified models for active galactic nuclei and quasars
    • Antonucci, R. Unified models for active galactic nuclei and quasars. Annu. Rev. Astron. Astrophys. 31, 473-521 (2003).
    • (2003) Annu. Rev. Astron. Astrophys. , vol.31 , pp. 473-521
    • Antonucci, R.1
  • 9
    • 48349109107 scopus 로고    scopus 로고
    • The toroidal obscuration of active galactic nuclei
    • Elitzur, M. The toroidal obscuration of active galactic nuclei. N. Astron. Rev. 52, 274-288 (2008).
    • (2008) N. Astron. Rev. , vol.52 , pp. 274-288
    • Elitzur, M.1
  • 10
    • 0000258048 scopus 로고
    • The infrared emission of Seyfert galaxies
    • Rieke, G. H. The infrared emission of Seyfert galaxies. Astrophys. J. 226, 550-558 (1978).
    • (1978) Astrophys. J. , vol.226 , pp. 550-558
    • Rieke, G.H.1
  • 12
    • 0037624999 scopus 로고    scopus 로고
    • The ISO view of Palomar-Green quasars
    • Haas, M. et al. The ISO view of Palomar-Green quasars. Astron. Astrophys. 402, 87-111 (2003).
    • (2003) Astron. Astrophys. , vol.402 , pp. 87-111
    • Haas, M.1
  • 13
    • 33751584733 scopus 로고    scopus 로고
    • Spectral energy distributions and multiwavelength selection of type 1 quasars
    • Richards, G. T. et al. Spectral energy distributions and multiwavelength selection of type 1 quasars. Astrophys. J. 166 (Suppl.), 470-497 (2006).
    • (2006) Astrophys. J. , vol.166 , Issue.SUPPL. , pp. 470-497
    • Richards, G.T.1
  • 14
    • 33645834312 scopus 로고    scopus 로고
    • A near-infrared spectral template for quasars
    • Glikman, E., Helfand, D. J. & White, R. L. A near-infrared spectral template for quasars. Astrophys. J. 640, 579-591 (2006).
    • (2006) Astrophys. J. , vol.640 , pp. 579-591
    • Glikman, E.1    Helfand, D.J.2    White, R.L.3
  • 15
    • 70449584914 scopus 로고    scopus 로고
    • Near-infrared spectroscopy of SDSS J0303-0019: A low-luminosity, high-eddington-ratio quasar at z 6
    • Kurk, J. D. et al. Near-infrared spectroscopy of SDSS J0303-0019: a low-luminosity, high-Eddington-ratio quasar at z, 6. Astrophys. J. 702, 833-837 (2009).
    • (2009) Astrophys. J. , vol.702 , pp. 833-837
    • Kurk, J.D.1
  • 17
    • 34547996135 scopus 로고    scopus 로고
    • Millimeter and radio observations of z, 6 quasars
    • Wang, R. et al. Millimeter and radio observations of z, 6 quasars. Astron. J. 134, 617-627 (2007).
    • (2007) Astron. J. , vol.134 , pp. 617-627
    • Wang, R.1
  • 18
    • 55849095103 scopus 로고    scopus 로고
    • Thermal emission from warm dust in the most distant quasars
    • Wang, R. et al. Thermal emission from warm dust in the most distant quasars. Astrophys. J. 687, 848-858 (2008).
    • (2008) Astrophys. J. , vol.687 , pp. 848-858
    • Wang, R.1
  • 19
    • 33745295888 scopus 로고    scopus 로고
    • Spitzer observations of high-redshift QSOs
    • Hines, D. C. et al. Spitzer observations of high-redshift QSOs. Astrophys. J. 641, 85-88 (2006).
    • (2006) Astrophys. J. , vol.641 , pp. 85-88
    • Hines, D.C.1
  • 20
    • 0039610511 scopus 로고
    • Continuum energy distributions of quasars in the Palomar-Green Survey
    • Neugebauer, G. et al. Continuum energy distributions of quasars in the Palomar-Green Survey. Astrophys. J. 63 (Suppl.), 615-644 (1987).
    • (1987) Astrophys. J. , vol.63 , Issue.SUPPL. , pp. 615-644
    • Neugebauer, G.1
  • 21
    • 4243890260 scopus 로고    scopus 로고
    • Dust in PG quasars as seen by ISO
    • Haas, M. et al. Dust in PG quasars as seen by ISO. Astron. Astrophys. 354, 453-466 (2000).
    • (2000) Astron. Astrophys. , vol.354 , pp. 453-466
    • Haas, M.1
  • 22
    • 65649152944 scopus 로고    scopus 로고
    • Mid-infrared spectroscopy of infrared-luminous galaxies at z 0.5-3
    • Hernán-Caballero, A. et al. Mid-infrared spectroscopy of infrared-luminous galaxies at z, 0.5-3. Mon. Not. R. Astron. Soc. 395, 1695-1722 (2009).
    • (2009) Mon. Not. R. Astron. Soc. , vol.395 , pp. 1695-1722
    • Hernán-Caballero, A.1
  • 23
    • 33745297568 scopus 로고    scopus 로고
    • Determining central black hole masses in distant active galaxies and quasars. II. Improved optical and UV scaling relationships
    • Vestergaard, M. & Peterson, B. M. Determining central black hole masses in distant active galaxies and quasars. II. Improved optical and UV scaling relationships. Astrophys. J. 641, 689-709 (2006).
    • (2006) Astrophys. J. , vol.641 , pp. 689-709
    • Vestergaard, M.1    Peterson, B.M.2
  • 24
    • 0038658556 scopus 로고    scopus 로고
    • Smoking quasars: A new source for cosmic dust
    • Elvis, M., Marengo, M. & Karovska, M. Smoking quasars: a new source for cosmic dust. Astrophys. J. 567, 107-110 (2002).
    • (2002) Astrophys. J. , vol.567 , pp. 107-110
    • Elvis, M.1    Marengo, M.2    Karovska, M.3
  • 25
    • 5044223960 scopus 로고    scopus 로고
    • A supernova origin for dust in a high-redshift quasar
    • Maiolino, R. et al. A supernova origin for dust in a high-redshift quasar. Nature 431, 533-535 (2004).
    • (2004) Nature , vol.431 , pp. 533-535
    • Maiolino, R.1
  • 26
    • 34249936262 scopus 로고    scopus 로고
    • Dust properties at z 5 6.3 in the host galaxy of GRB 050904
    • Stratta, G., Maiolino, R., Fiore, F. & D'Elia, V. Dust properties at z 5 6.3 in the host galaxy of GRB 050904. Astrophys. J. 661, 9-12 (2007).
    • (2007) Astrophys. J. , vol.661 , pp. 9-12
    • Stratta, G.1    Maiolino, R.2    Fiore, F.3    D'Elia, V.4
  • 28
    • 0142145047 scopus 로고    scopus 로고
    • Iron emission in the z 5 6.4 quasar SDSS J114816.641525150.3
    • Barth, A. J., Martini, P., Nelson, C. H. & Ho, L. C. Iron emission in the z 5 6.4 quasar SDSS J114816.641525150.3. Astrophys. J. 594, 95-98 (2003).
    • (2003) Astrophys. J. , vol.594 , pp. 95-98
    • Barth, A.J.1    Martini, P.2    Nelson, C.H.3    Ho, L.C.4
  • 29
    • 68049119971 scopus 로고    scopus 로고
    • Mass functions of the active black holes in distant quasars from the Large Bright Quasar Survey, the Bright Quasar Survey, and the color-selected sample of the SDSS fall equatorial stripe
    • Vestergaard, M. & Osmer, P. S. Mass functions of the active black holes in distant quasars from the Large Bright Quasar Survey, the Bright Quasar Survey, and the color-selected sample of the SDSS fall equatorial stripe. Astrophys. J. 699, 800-816 (2009).
    • (2009) Astrophys. J. , vol.699 , pp. 800-816
    • Vestergaard, M.1    Osmer, P.S.2
  • 30
    • 0001370443 scopus 로고
    • (eds Worrall D. M. Biemesderfer C. & Barnes J.) ASP Conf. Ser. Vol. 25, Astronomical Society of the Pacific
    • Lavalley, M., Isobe, T. & Feigelson, E. in Astronomical Data Analysis Software and Systems I (eds Worrall, D. M., Biemesderfer, C. & Barnes, J.) 245-247 (ASP Conf. Ser. Vol. 25, Astronomical Society of the Pacific, 1992).
    • (1992) Astronomical Data Analysis Software and Systems i , pp. 245-247
    • Lavalley, M.1    Isobe, T.2    Feigelson, E.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.