The ALFALFA Undergrad Proposals page
Links for everybody
The A2010 page at NAIC.
This is a good place to look for information on what has been observed already,
and you'll also find useful things like the "Master List of Drift Declination
proposal instructions. (We will not follow this 100%. Most notably,
you won't submit the proposal and it won't be refereed!)
FORTRAN program driftlinks.f to generate links to the SDSS, Skyview DSS1 and DSS2, and NED.
Current helpful stuff
- Output of "driftlinks.f" for a drift starting at RA=135000.0, Dec=+051354.
Follow the links here to identify, and learn about the galaxies in the field of this drift. The links take you
to the SDSS, the SkyView utility at GSFC where you can access the DSS1 and DSS2, and the NED. Note that this
declination matches that of drift "22p1" (Drift assignment number 22, pass 1) of the ALFALFA master list. The first two numbers in each
entry are, respectively, the AGC ("Arecibo General Catalog", the Cornell EGG database) number and the UGC
(Uppsala General Catalog) number.
- Output of "plotd" for the same drift.
The dotted lines indicate the tracks of the different ALFA beams. The different colors identify galaxies
in different redshift ranges given in the legend at the top; the sizes and orientations of some galaxies
reflect their sizes and orientations on the sky (they are shown as polygons reflecting the major and minor
axis given in the AGC, the CU EGG database).
- Selected AGC parameter entries for galaxies in drift above. Here is the
AGC documentation file. Note that the AGC is a private database belonging to the
Cornell EGG, but of course, we share it with our friends and collaborators. However, it should not be
copied or used without permission of Martha or Riccardo.
- Some of you have followed the dots to realize that NGC 5363 is an HI absorber(!) discovered by
Haynes & Giovanelli (before you were born!). Here are links to two useful papers:
You can follow the link to "Skyview" below to look at the continuum source; look at the
NVSS image of the field around N5363. How strong
is this continuum source? Note that the ALFA system temperature (on "cold sky")is about 30 K, and the
gain is 11 K/Jy for the center beam, 8.5 K/Jy for the outer beams. What is the
fractional increase in the system temperature contributed by this continuum source?
HI absorption in N5363
Old Arecibo observations of the group
Useful Galaxy Databases
Useful utility programs (Currently these are available only at Cornell; some are
also installed at Arecibo, and we'll fix all this when we can!)
Internal Cornell links (Sorry, friends, these are available only at Cornell)
This page maintained by members of the ALFALFA undergraduate team at
ExtraGalactic Group and their colleagues at Colgate, Lafayette, Union
and U. Puerto Rico.
Last modified: Wed Jun 22 09:19:23 EDT 2005