Low surface brightness galaxies in the local universe .3. Implications for the field galaxy luminosity function

被引:72
作者
Sprayberry, D
Impey, CD
Irwin, MJ
Bothun, GD
机构
[1] UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721
[2] ROYAL GREENWICH OBSERV,CAMBRIDGE CB3 0EZ,ENGLAND
[3] UNIV OREGON,DEPT PHYS,EUGENE,OR 97403
关键词
galaxies; fundamental parameters; luminosity function; mass function; statistics;
D O I
10.1086/304126
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a luminosity function for low surface brightness (LSB) galaxies identified in the Automatic Plate Measuring Facility survey of Impey et al. These galaxies have central surface brightnesses [mu(0)] in B in the range 22.0 less than or equal to mu(0) less than or equal to 25.0. Using standard maximum likelihood estimators, we determine that the best-fit Schechter function parameters for this luminosity function (LF) are alpha = -1.42, M* = -18.34, and phi* = 0.0036, assuming H-0 = 100 h(100) km s(-1) Mpc(-1). We compare the luminosity and number densities derived from this luminosity function with those obtained from other recent field galaxy studies and find that surveys that do not take account of the observational selection bias imposed by surface brightness are missing a substantial fraction of the galaxies in the local universe. Under our most conservative estimates, our derivation of the LF for LSB galaxies suggests that the CfA Redshift Survey has missed at least one-third of the local galaxy population. This overlooked fraction is not enough by itself to explain the large number of faint blue galaxies observed at moderate redshift under no-evolution models, but it does help to close the gap between local and moderate-redshift galaxy counts.
引用
收藏
页码:104 / 113
页数:10
相关论文
共 55 条
[1]   ON DWARF ELLIPTIC GALAXIES AND THE FAINT BLUE COUNTS [J].
BABUL, A ;
REES, MJ .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 255 (02) :346-350
[2]   Faint blue galaxies and the epoch of dwarf galaxy formation [J].
Babul, A ;
Ferguson, HC .
ASTROPHYSICAL JOURNAL, 1996, 458 (01) :100-119
[3]   CORRELATIONS OF GALAXIES AT Z=0.3 [J].
BERNSTEIN, GM ;
TYSON, JA ;
BROWN, WR ;
JARVIS, JF .
ASTROPHYSICAL JOURNAL, 1994, 426 (02) :516-523
[4]  
BINGGELI B, 1988, ANNU REV ASTRON ASTR, V26, P509
[5]   THE FAINT END OF THE ZWICKY MAGNITUDE SCALE - CCD ISOPHOTAL MAGNITUDES VERSUS ZWICKY MAGNITUDES [J].
BOTHUN, GD ;
CORNELL, ME .
ASTRONOMICAL JOURNAL, 1990, 99 (03) :1004-1013
[6]   EXTREMELY LOW SURFACE BRIGHTNESS GALAXIES IN THE FORNAX CLUSTER - PROPERTIES, STABILITY, AND LUMINOSITY FLUCTUATIONS [J].
BOTHUN, GD ;
IMPEY, CD ;
MALIN, DF .
ASTROPHYSICAL JOURNAL, 1991, 376 (02) :404-423
[7]   THE DURHAM ANGLO-AUSTRALIAN TELESCOPE FAINT GALAXY REDSHIFT SURVEY [J].
BROADHURST, TJ ;
ELLIS, RS ;
SHANKS, T .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1988, 235 (03) :827-856
[8]  
BRUZUAL AG, 1980, ASTROPHYS J, V241, P25, DOI 10.1086/158314
[9]   STRUCTURAL PARAMETERS OF FAINT GALAXIES FROM PREREFURBISHMENT HUBBLE-SPACE-TELESCOPE MEDIUM DEEP SURVEY OBSERVATIONS [J].
CASERTANO, S ;
RATNATUNGA, KU ;
GRIFFITHS, RE ;
IM, M ;
NEUSCHAEFER, LW ;
OSTRANDER, EJ ;
WINDHORST, RA .
ASTROPHYSICAL JOURNAL, 1995, 453 (02) :599-610
[10]   COLORS AND MAGNITUDES PREDICTED FOR HIGH REDSHIFT GALAXIES [J].
COLEMAN, GD ;
WU, CC ;
WEEDMAN, DW .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1980, 43 (03) :393-416