A 250 GHz survey of high-redshift quasars from the sloan digital sky survey

C. L. Carilli, F. Bertoldi, M. P. Rupen, Xiaohui Fan, Michael A. Strauss, K. M. Menten, E. Kreysa, Donald P. Schneider, A. Bertarini, M. S. Yun, R. Zylka

Research output: Contribution to journalArticle

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Abstract

We present observations at 250 GHz (1.2 mm), 43 GHz, and 1.4 GHz of a sample of 41 QSOs at z > 3.7 found in the Sloan Digital Sky Survey. We detect 16 sources with a 250 GHz flux density greater than 1.4 mJy. The combination of centimeter and millimeter wavelength observations indicates that the 250 GHz emission is most likely thermal dust emission. Assuming a dust temperature of 50 K, the implied dust masses for the 16 detected sources are in the range 1.5-5.9 × 108 M, and the dust emitting regions are likely to be larger than 1 kpc in extent. The radio-through-optical spectral energy distributions for these sources are within the broad range defined by lower redshift, lower optical luminosity QSOs. We consider possible dust heating mechanisms, including UV emission from the active galactic nucleus (AGN) and a starburst concurrent with the AGN, with implied star formation rates between 500 and 2000 M yr-1.

Original languageEnglish (US)
Pages (from-to)625-632
Number of pages8
JournalAstrophysical Journal
Volume555
Issue number2 PART 1
DOIs
StatePublished - Jul 10 2001
Externally publishedYes

Fingerprint

quasars
dust
active galactic nuclei
star formation rate
spectral energy distribution
flux density
luminosity
radio
heating
wavelength
wavelengths
energy
temperature

Keywords

  • Dust, extinction
  • Galaxies: active
  • Galaxies: evolution
  • Galaxies: starburst
  • Infrared: galaxies
  • Radio continuum: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Carilli, C. L., Bertoldi, F., Rupen, M. P., Fan, X., Strauss, M. A., Menten, K. M., ... Zylka, R. (2001). A 250 GHz survey of high-redshift quasars from the sloan digital sky survey. Astrophysical Journal, 555(2 PART 1), 625-632. https://doi.org/10.1086/321519

A 250 GHz survey of high-redshift quasars from the sloan digital sky survey. / Carilli, C. L.; Bertoldi, F.; Rupen, M. P.; Fan, Xiaohui; Strauss, Michael A.; Menten, K. M.; Kreysa, E.; Schneider, Donald P.; Bertarini, A.; Yun, M. S.; Zylka, R.

In: Astrophysical Journal, Vol. 555, No. 2 PART 1, 10.07.2001, p. 625-632.

Research output: Contribution to journalArticle

Carilli, CL, Bertoldi, F, Rupen, MP, Fan, X, Strauss, MA, Menten, KM, Kreysa, E, Schneider, DP, Bertarini, A, Yun, MS & Zylka, R 2001, 'A 250 GHz survey of high-redshift quasars from the sloan digital sky survey', Astrophysical Journal, vol. 555, no. 2 PART 1, pp. 625-632. https://doi.org/10.1086/321519
Carilli CL, Bertoldi F, Rupen MP, Fan X, Strauss MA, Menten KM et al. A 250 GHz survey of high-redshift quasars from the sloan digital sky survey. Astrophysical Journal. 2001 Jul 10;555(2 PART 1):625-632. https://doi.org/10.1086/321519
Carilli, C. L. ; Bertoldi, F. ; Rupen, M. P. ; Fan, Xiaohui ; Strauss, Michael A. ; Menten, K. M. ; Kreysa, E. ; Schneider, Donald P. ; Bertarini, A. ; Yun, M. S. ; Zylka, R. / A 250 GHz survey of high-redshift quasars from the sloan digital sky survey. In: Astrophysical Journal. 2001 ; Vol. 555, No. 2 PART 1. pp. 625-632.
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AU - Kreysa, E.

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AB - We present observations at 250 GHz (1.2 mm), 43 GHz, and 1.4 GHz of a sample of 41 QSOs at z > 3.7 found in the Sloan Digital Sky Survey. We detect 16 sources with a 250 GHz flux density greater than 1.4 mJy. The combination of centimeter and millimeter wavelength observations indicates that the 250 GHz emission is most likely thermal dust emission. Assuming a dust temperature of 50 K, the implied dust masses for the 16 detected sources are in the range 1.5-5.9 × 108 M⊙, and the dust emitting regions are likely to be larger than 1 kpc in extent. The radio-through-optical spectral energy distributions for these sources are within the broad range defined by lower redshift, lower optical luminosity QSOs. We consider possible dust heating mechanisms, including UV emission from the active galactic nucleus (AGN) and a starburst concurrent with the AGN, with implied star formation rates between 500 and 2000 M⊙ yr-1.

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KW - Radio continuum: galaxies

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