J/MNRAS/312/557 K-band Luminosity Function of Field Galaxies (Loveday 2000)
The K-band Luminosity Function of Nearby Field Galaxies
Loveday J.
<Mon. Not. R. Astron. Soc. 312, 557 (2000)>
=2000MNRAS.312..557L 2000MNRAS.312..557L
ADC_Keywords: Galaxies, IR ; Photometry, infrared ; Surveys ; Redshifts
Keywords: techniques: photometric surveys - galaxies: luminosity function,
mass function - cosmology: observations
Description:
We present a measurement of the K-band luminosity function (LF) of
field galaxies obtained from near-infrared imaging of a sample of 345
galaxies selected from the Stromlo-APM Redshift Survey. The LF is
reasonably well fitted over the 10-mag range -26 < M(K-band) < -16 by
a Schechter function with the parameters
α=-1.16±0.19, M*=-23.58±0.42 and {phi*}=0.012±0.008 Mpc-3,
assuming a Hubble constant of 100 km.s-1.Mpc-1. We have also estimated
the LF for two subsets of galaxies subdivided by the equivalent width
of the Hα emission line at EW(Hα)=1nm. There is no
significant difference in LF shape between the two samples, although
there is a hint (∼1σ significance) that emission-line galaxies
(ELGs) have M* roughly 1 mag fainter than non-ELGs. Contrary to the
optical LF, there is no difference in the faint end slope α
between the two samples.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 89 351 Catalog of K-band galaxy photometry
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See also:
II/211 : K-band survey in high galactic latitude (Glazebrook+ 1994)
J/ApJS/107/201 : The Stromlo-APM Redshift Survey IV (Loveday+ 1996)
J/MNRAS/278/1025 : The APM Bright Galaxy Catalogue (Loveday 1996)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 11 A11 --- Name *Galaxy name
14- 15 I2 h RAh Right Ascension (1950)
17- 18 I2 min RAm Right Ascension (1950)
20- 24 F5.2 s RAs Right Ascension (1950)
27 A1 --- DE- Declination sign
28- 29 I2 deg DEd Declination (1950)
31- 32 I2 arcmin DEm Declination (1950)
34- 37 F4.1 arcsec DEs Declination (1950)
40- 44 F5.2 mag bJmag b(J) magnitude
47- 51 I5 km/s RV heliocentric recession velocity
54- 58 F5.2 mag Kmag *K-band magnitude
62- 65 F4.2 mag e_Kmag error in K-band magnitude
68- 70 I3 arcsec SMajAxis semimajor axis of measurement ellipse
74- 75 I2 arcsec SMinAxis semiminor axis of measurement ellipse
78- 80 I3 deg PA position angle measured clockwise from
83- 84 I2 --- fSExtr *flags outputted by SExtractor
87- 89 A3 --- Notes *? Source comments
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Note on Name:
Galaxy naming follows the same convention as the APM Bright Galaxy
Catalogue (1996MNRAS.278.1025L 1996MNRAS.278.1025L) and the Stromlo-APM Redshift Survey
(1996ApJS..107..201L 1996ApJS..107..201L).
Note on Kmag:
Obtained with the Cerro Tololo Interamerican Observatory (CTIO) 1.5
meter telescope using the CIRIM infrared array through the standard K
filter over the nine nights 1996 August 31-September 4 and 1997
October 19-22.
Note on fSExtr:
SExtractor 2.0.1.5 software package developed by Bertin and Arnouts
(1996A&AS..117..393B 1996A&AS..117..393B) used to detect and measure images.
Note on Notes:
1 = Galaxy deblended by SExtractor; flux of components was summed.
2 = A "biggrid" observation: photometry may be less reliable than most
galaxies.
3 = NGC1672: APM deblended this galaxy.
4 = Possibly non-photometric
5 = Central galaxy in close group of 3
6 = Double nucleus
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Acknowledgements:
An electronic version of the data table was provided to ADC by J. Loveday.
(End) T. Sodroski [SSDOO/ADC] 24-Jul-2000