2MASS Galaxy Catalog T. Jarrett 6dFGS Workshop (Jul 03) - PowerPoint PPT Presentation

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2MASS Galaxy Catalog T. Jarrett 6dFGS Workshop (Jul 03)

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2MASS Galaxy Catalog T. Jarrett 6dFGS Workshop (Jul 03) All Sky released 500 million sources (PSC) 1.65 million sources (XSC) 98% galaxies (XSC) 10 – PowerPoint PPT presentation

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Title: 2MASS Galaxy Catalog T. Jarrett 6dFGS Workshop (Jul 03)


1
2MASS Galaxy CatalogT. Jarrett6dFGS Workshop
(Jul 03)
  • All Sky released
  • 500 million sources (PSC)
  • 1.65 million sources (XSC)
  • gt98 galaxies (XSC)
  • 10? lt size lt degrees
  • Klim lt 14 mag (completeness)
  • Ks 13.2 mag (S/N 10)
  • Ks lt 12 mag (ZoA penetrated)

2
Topics
  • XSC Overview
  • Galaxy Counts
  • Size Distribution
  • Colors
  • Spatial Redshift Distribution(s)
  • (Morphology)
  • NIR images
  • Color
  • SB

3
All Sky
4
Galaxy Counts
Glat gt 25o
5
Zone of Avoidance
Glat lt 5o
6
Galaxies Galactic Fuzz
7
Galaxy Clusters
8
Size Distribution
9
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10
Colors
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13
K-correction
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17
Hercules
Virgo
Perseus-Pisces

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19
Galactic View of the Near-Infrared Local Universe
20
NED matches with 2MASS
RC3 UGC CfA Carnegie SDSS 2dF 6dF
21
Photometric Redshifts
Distance modulus
where h Ho km/s/Mpc / 100, W o 1 AV(l,b)
determined from the Schlegel FIR maps
K-band Luminosity Function (Kochanick et al.
2001 Cole et al.) MK ? -23.5 mag See also
Kochanek et al. (2003) "Clusters of Galaxies in
the Local Universe"
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23
NED vs 2MASS
Photo-redshifts z(K, l, b) MK -24 mag h
0.72 AK 0.1 ? AV
6dF vs 2MASS
24
NED vs 2MASS
25
6dF vs 2MASS
26
2dF vs 2MASS
27
NIR Morphology
Q Does the 2MASS XSC provide enough information
to distinguish galaxy types? Q NIR Images? Q
Optical NIR?
Q Spectral Classification?
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E3 S0
Sa
NGC3091 K8.2
NGC3768 K9.7
NGC5326 K9.0
CGCG212-036 K12.05
NGC4186 K10.8
ARK417 K12.4
IRASF125933011 K12.6
LEDA83469 K13.0
IISZ039 K12.5
30
Sb Sc
Sd
NGC4800 K8.3 UGC7017
K10.5 IC3609 K12.5
NGC4651 K8.1 NGC3140
K11.0 VPC0007 K12.9
NGC3621 K7.0 UGC8702
K11.3 NGC4514 K12.0
UGC8911 K12.7
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