A comparison of the optical properties of radio-loud and radio-quiet quasars

被引:72
|
作者
Goldschmidt, P
Kukula, MJ
Miller, L
Dunlop, JS
机构
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BZ, England
[2] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[3] Univ Edinburgh, Astron Inst, Edinburgh EH8 9YL, Midlothian, Scotland
[4] Univ Oxford, Nucl & Astrophys Lab, Oxford OX1 3RH, England
[5] Univ Edinburgh, Royal Observ, Astron Inst, Edinburgh EH9 3HJ, Midlothian, Scotland
来源
ASTROPHYSICAL JOURNAL | 1999年 / 511卷 / 02期
关键词
quasars : general; radio continuum : galaxies; surveys;
D O I
10.1086/306699
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have made radio observations of 87 optically selected quasars at 5 GHz with the VLA in order to measure the radio power for these objects and hence determine how the fraction of radio-loud quasars varies with redshift and optical luminosity. The sample has been selected from the recently completed Edinburgh Quasar Survey and covers a redshift range of 0.3 less than or equal to z less than or equal to 1.5 and an optical absolute magnitude range of -26.5 less than or equal to M(B) less than or equal to -23.5 (h = 1/2, q(0) = 1/2). We have also matched other existing surveys with the Faint Images of the Radio Sky at Twenty Centimeters and NRAO VLA Sky Survey radio catalogs and combined these data so that the optical luminosity-redshift plane is now far better sampled than before. We have fitted a model to the probability of a quasar being radio-loud as a function of absolute magnitude and redshift, and from this model we infer the radio-loud and radio-quiet optical luminosity functions. The radio-loud optical luminosity function is featureless and flatter than the radio-quiet one. It evolves at a marginally slower rate if quasars evolve by density evolution, but the difference in the rate of evolutions of the two different classes is much less than was previously thought. We show, using Monte Carlo simulations, that the observed difference in the shape of the optical luminosity functions can be partly accounted for by Doppler boosting of the optical continuum of the radio-loud quasars, and we explain how this can be tested in the future.
引用
收藏
页码:612 / 624
页数:13
相关论文
共 50 条
  • [1] Optical variability patterns of radio-quiet and radio-loud quasars
    Marziani, P.
    Bon, E.
    Grieco, A.
    Bon, N.
    Dultzin, D.
    Del Olmo, A.
    D'Onofrio, M.
    [J]. NEW FRONTIERS IN BLACK HOLE ASTROPHYSICS, 2017, 12 (S324): : 243 - 244
  • [2] Radio variability of radio-quiet and radio-loud quasars
    Barvainis, R
    Lehár, J
    Birkinshaw, M
    Falcke, H
    Blundell, KM
    [J]. ASTROPHYSICAL JOURNAL, 2005, 618 (01): : 108 - 122
  • [3] RADIO-LOUD AND RADIO-QUIET QUASARS OBSERVED BY EXOSAT
    LAWSON, AJ
    TURNER, MJL
    WILLIAMS, OR
    STEWART, GC
    SAXTON, RD
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 259 (04) : 743 - 750
  • [4] IRAS OBSERVATIONS OF RADIO-QUIET AND RADIO-LOUD QUASARS
    NEUGEBAUER, G
    SOIFER, BT
    MILEY, G
    YOUNG, E
    BEICHMAN, CA
    CLEGG, PE
    HABING, HJ
    HARRIS, S
    LOW, FJ
    ROWANROBINSON, M
    [J]. ASTROPHYSICAL JOURNAL, 1984, 278 (01): : L83 - L85
  • [5] Radio-loud and radio-quiet BAL quasars: a detailed ultraviolet comparison
    Rochais, T. B.
    DiPompeo, M. A.
    Myers, A. D.
    Brotherton, M. S.
    Runnoe, J. C.
    Hall, S. W.
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 444 (03) : 2498 - 2506
  • [6] DIFFERENTIAL EVOLUTION OF RADIO-QUIET AND RADIO-LOUD QUASARS
    SCHMIDT, M
    VANGORKOM, JH
    SCHNEIDER, DP
    GUNN, JE
    [J]. ASTRONOMICAL JOURNAL, 1995, 109 (02): : 473 - 479
  • [7] The hosts galaxies of radio-loud and radio-quiet quasars
    Dunlop, JS
    [J]. QSO HOSTS AND THEIR ENVIRONMENTS, 2001, : 3 - 12
  • [8] Intranight optical variability of BL Lacs, radio-quiet quasars and radio-loud quasars
    Stalin, CS
    Gupta, AC
    Gopal-Krishna
    Wiita, PJ
    Sagar, R
    [J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2005, 356 (02) : 607 - 614
  • [9] A comparative study of the microvariability properties in radio-loud and radio-quiet quasars
    de Diego, JA
    Dultzin-Hacyan, D
    Ramirez, A
    Benitez, E
    [J]. ASTROPHYSICAL JOURNAL, 1998, 501 (01): : 69 - 81
  • [10] THE ULTRAVIOLET-SPECTRA OF RADIO-LOUD AND RADIO-QUIET QUASARS
    FRANCIS, PJ
    HOOPER, EJ
    IMPEY, CD
    [J]. ASTRONOMICAL JOURNAL, 1993, 106 (02): : 417 - 425