J/MNRAS/335/712 R magnitude of cluster of galaxies (Trentham+, 2002)
The faint end of the galaxy luminosity function.
Trentham N., Tully R.B.
<Mon. Not. R. Astron. Soc. 335, 712 (2002)>
=2002MNRAS.335..712T 2002MNRAS.335..712T
ADC_Keywords: Clusters, galaxy ; Magnitudes
Keywords: galaxies: clusters: individual: Virgo, NGC 1407 Group, Leo Group -
galaxies: clusters: individual: Coma I Group, NGC 1023 Group -
galaxies: luminosity function, mass function.
Abstract:
We present and discuss optical measurements of the faint end of the
galaxy luminosity function down to MR=-10 in five different local
environments of varying galaxy density and morphological content. The
environments we studied, in order of decreasing galaxy density, are
the Virgo Cluster, the NGC 1407 Group, the Coma I Group, the Leo Group
and the NGC 1023 Group. Our results come from a deep wide-angle survey
with the National Astronomical Observatories of Japan Subaru 8-m
Telescope on Mauna Kea and are sensitive down to very faint
surface-brightness levels. Galaxies were identified as group or
cluster members on the basis of their surface brightness and
morphology. The faintest galaxies in our sample have R∼22.5. There
were thousands of fainter galaxies but we cannot distinguish cluster
members from background galaxies at these faint limits so do not
attempt to determine a luminosity function fainter than MR=-10.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tables.dat 102 249 Tables 2 to 6 (Virgo, NGC 1407 Group, Coma I,
Leo and NGC 1023 Group) samples
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See also:
J/AJ/90/1681 : The Virgo Cluster Catalog (VCC) (Binggeli+, 1985)
J/MNRAS/333/423 : Luminosity function of the Virgo Cluster (Trentham+, 2002)
Byte-by-byte Description of file: tables.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Cluster Name of cluster (1)
10- 11 I2 --- Seq Sequential number of galaxy in cluster (1)
13- 31 A19 --- Names Other Name(s) of the galaxy
33- 42 A10 --- MType Morphological type
44- 47 I4 km/s HV ? Heliocentric velocity
49 I1 --- Memb [0/4] Membership code (2)
51- 55 F5.2 --- RTmag Total R apparent magnitude
57- 58 I2 h RAh Right ascension (J2000)
60- 61 I2 min RAm Right ascension (J2000)
63- 66 F4.1 s RAs Right ascension (J2000)
68 A1 --- DE- Declination sign (J2000)
69- 70 I2 deg DEd Declination (J2000)
72- 73 I2 arcmin DEm Declination (J2000)
75- 76 I2 arcsec DEs Declination (J2000)
78- 82 F5.2 mag R(6) ? R-band magnitude in an aperture of radius 6"
(not measured for saturated galaxies)
83 A1 --- n_R(6) [S] S: saturated
85- 89 F5.2 --- ICP ? Inner concentration parameter (3)
91- 95 F5.2 --- OCP ? Outer concentration parameter (4)
97-102 F6.2 mag RMAG Absolute Cousins R magnitude
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Note (1): SIMBAD Names:
Table 2: <[TT2002] Virgo NN> (Nos 1-99)
Table 3: <[TT2002] NGC 1407 NN> (Nos 1-58)
Table 4: <[TT2002] Coma I NN> (Nos 1-38)
Table 5: <[TT2002] Leo NN> (Nos 1-26)
Table 6: <[TT2002] NGC 1023 NN> (Nos 1-28)
Note (2): Membership probability:
0: membership confirmed from optical spectroscopic or HI data
1: probable member, but no spectroscopic or HI detection in the literature
2: possibly a member, but conceivably background
3: probably background, but conceivably a member
4: almost certainly background given the properties of the background
fields studied in Trentham et al., 2001MNRAS.325..385T 2001MNRAS.325..385T
Note (3): Inner concentration parameter:
ICP = R(4.4arcsec)-R(2.2arcsec)
Not measured for saturated galaxies or if no adequate coverage of
galaxies within 6 arcsec of the edge or a chip defect.
Note (4): Outer concentration parameter:
OCP = R(12arcsec) -R(6arcsec)
Not measured for saturated galaxies or if no adequate coverage of
galaxies within 12 arcsec of the edge or a chip defect. If a galaxy
had a close companion its measured OCP value tends to be very negative.
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 12-Nov-2002