MODERATE RESOLUTION SPECTROPHOTOMETRY OF HIGH REDSHIFT QUASARS

被引:185
作者
SCHNEIDER, DP
SCHMIDT, M
GUNN, JE
机构
[1] CALTECH,PALOMAR OBSERV,PASADENA,CA 91125
[2] PRINCETON UNIV OBSERV,PRINCETON,NJ 08544
关键词
D O I
10.1086/115825
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a uniform set of photometry and high signal-to-noise moderate resolution spectroscopy of 33 quasars with redshifts larger than 3.1. The sample consists of 17 newly discovered quasars (two with redshifts in excess of 4.4) and 16 sources drawn from the literature. The objects in this sample have r magnitudes between 17.4 and 21.4; their luminosities range from - 28.8 less-than-or-equal-to M(B) less-than-or-equal-to - 24.9 (H0 = 50, q0 = 0.5). Three of the 33 objects are broad absorption line quasars. A number of possible high redshift damped Ly alpha systems were found.
引用
收藏
页码:2004 / 2016
页数:13
相关论文
共 42 条
  • [1] QUASAR IONIZATION OF LYMN-ALPHA CLOUDS - THE PROXIMITY EFFECT, A PROBE OF THE ULTRAVIOLET BACKGROUND AT HIGH REDSHIFT
    BAJTLIK, S
    DUNCAN, RC
    OSTRIKER, JP
    [J]. ASTROPHYSICAL JOURNAL, 1988, 327 (02) : 570 - 583
  • [2] LUMINOSITY INDICATORS IN SPECTRA OF QUASI-STELLAR OBJECTS
    BALDWIN, JA
    [J]. ASTROPHYSICAL JOURNAL, 1977, 214 (03) : 679 - 684
  • [3] IUE OBSERVATIONS OF HIGH-REDSHIFT QUASARS
    BECHTOLD, J
    GREEN, RF
    WEYMANN, RJ
    SCHMIDT, M
    ESTABROOK, FB
    SHERMAN, RD
    WAHLQUIST, HD
    HECKMAN, TM
    [J]. ASTROPHYSICAL JOURNAL, 1984, 281 (01) : 76 - 89
  • [4] H-1, GALAXY COUNTS, AND REDDENING - VARIATION IN GAS-TO-DUST RATIO, EXTINCTION AT HIGH GALACTIC LATITUDES, AND A NEW METHOD FOR DETERMINING GALACTIC REDDENING
    BURSTEIN, D
    HEILES, C
    [J]. ASTROPHYSICAL JOURNAL, 1978, 225 (01) : 40 - 55
  • [5] GIALLONGO E, 1990, UNPUB MNRAS
  • [6] 4-SHOOTER - A LARGE FORMAT CHARGE-COUPLED-DEVICE CAMERA FOR THE HALE TELESCOPE
    GUNN, JE
    CARR, M
    DANIELSON, GE
    LORENZ, EO
    LUCINIO, R
    NENOW, VE
    SMITH, JD
    WESTPHAL, JA
    SCHNEIDER, DP
    ZIMMERMAN, BA
    [J]. OPTICAL ENGINEERING, 1987, 26 (08) : 779 - 787
  • [7] HAZARD C, 1991, UNPUB
  • [8] Heiles C., 1975, Astronomy and Astrophysics Supplement Series, V20, P37
  • [9] HUNSTEAD RW, 1988, QSO ABSORPTION LINES, P71
  • [10] JENKINS EB, 1990, UNPUB APJ