1 : Preliminaries   6 :   Dynamics I 11 : Star Formation  16 : Cosmology
2 : Morphology   7 :   Ellipticals 12 : Interactions 17 : Structure Growth 
3 : Surveys 8 :   Dynamics II 13 : Groups & Clusters  18 : Galaxy Formation 
4 : Lum. Functions  9 :   Gas & Dust   14 : Nuclei & BHs 19 : Reionization & IGM  
5 : Spirals 10 : Populations    15 : AGNs & Quasars 20 : Dark Matter





(1) Introduction

Extragalactic research often relies on making use of preexisting data. Knowing whats out there, how to access it, what it means, and what its limitations are, is an important aspect of your astronomical "competence". This topic aims to give a brief overview of the growing databases and catalogues which you may need in the future.


(2) WEB Literature Resources


(3) Major WEB Resources

Rather than describe these in detail, it is best to simply try them out to see what's available.


(4) Optical Galaxy Catalogs

(a) Important, Currently Used Catalogs

RC3 : "Third Reference Catalogue of Bright Galaxies" 1991 deVaucouleurs et al.

UGC : "Uppsala General Catalog of Galaxies" by Nilsen using PSS (1973)

RSA : "Revised Shapley Ames" (1987) by Sandage and Tammann

PGC : "Principal Galaxy Catalogue" 1989 Paturel et al

(b) Previously Important or Less Used Catalogs

NGC : "New(!) General Catalog" originally from Dreyer (1880s), revised 1973 (RNGC) by Sulentic and Tifft

MCG : "Morphological Catalog of Galaxies" 1964, Vorontsov-Velyaminov and Arhipova (Moscow)
CGCG : "Catalog of Galaxies and Clusters of Galaxies" Zwicky (1961-1968) generated from PSS
Arp : "Atlas of Peculiar Galaxies" Arps famous 1966 atlas

NBG : "Nearby Bright Galaxies" 1988 by Tully.

Further lists of the major catalogs are given : here, and here, and here.


(5) All Sky Surveys

It is often important to combine information from several wavebands
One way to do this is to make use of all-sky surveys.
Below is a partial list of the some of the more commonly used ones (see o-link for a full list).
Many can be accessed directly through:

(a) Radio

(b) Infrared

(c) Optical

(d) Ultraviolet

(e) X-ray

(f) Gamma-Ray



(6) Selection Effects in Surveys and Catalogs

The principal criteria which exclude galaxies from surveys and/or catalogs are :

(a) Malmquist Bias


(7) Global Parameters

There are a number of standard global parameters which galaxy catalogues often list.
It can be quite complex to convert/reduce to a standard system (eg the RC3 introduction is long and detailed!)
Lets briefly review these, using the RC3 as example.

(a) Positions

(b) Angular Sizes

(c) Magnitudes

(d) Extinctions

(e) Colors

(f) HI Kinematics and Fluxes

(g) Redshifts


(8) Sloan Digital Sky Survey: SDSS

The SDSS is such a huge and remarkable survey that we should briefly review.   [o-link]

(a) Survey Overview o-link

(b) SDSS Parameters

The scale and nature of the SDSS demands a careful approach to parameter definitions.
Ultimately, there are many parameters and their errors (and flags) defined
Here are just a few (taken from here: o-link)

(c) Web Access and Analysis

The entire dataset is available online (o-link)
It can be interrogated in several ways; here are just two:

(d) Other large/deep galaxy surveys

The SDSS is not the only large deep survey. Here are some others:

(e) Some Papers from SDSS and MGC