Next week's ATLAS meeting

[Ray Norris]

Next meeting: Tuesday 5 September 2017

• News   
• (a) Pero Manojlovic: Galaxy Cluster Environments of Radio Sources and other tails: (http://adsabs.harvard.edu/abs/2011AJ....141...88W et al)
• (b) Jordan Collier: Extragalactic Peaked-spectrum Radio Sources at Low Frequencies: http://adsabs.harvard.edu/abs/2017ApJ...836..174C 
• AOB

Prof. Ray Norris
Project Leader, Evolutionary Map of the Universe
School of Computing, Engineering, & Maths, Western Sydney University,
& CSIRO Astronomy & Space Science,
Tel: +61 417 288 307
http://www.atnf.csiro.au/people/rnorris
https://uws.zoom.us/j/2319669070

Prof. Ray Norris
Project Leader, Evolutionary Map of the Universe
School of Computing, Engineering, & Maths, Western Sydney University,
& CSIRO Astronomy & Space Science,
Tel: +61 417 288 307
http://www.atnf.csiro.au/people/rnorris
https://uws.zoom.us/j/2319669070

[Melanie Johnston-Hollitt]

Hi Ray, 

FYI: Figures 11, 19 and 20 in Wing & Blanton are wrong. I pointed this out to Josh and Liz about 5 years ago and Josh sent me the correct figure 11 (attached with email below), but  never got around to issuing an erratum. 

Cheers,

Melanie

From: Joshua Wing <jw...@bu.edu>
Date: Saturday, 21 December 2013 6:45 AM
To: Melanie Johnston-Hollitt <Melanie.John...@vuw.ac.nz>
Subject: Re: Question re Wing and Blanton (2011)

Hi Melanie,

Sorry for the delay in getting back to you.

There definitely is a problem with Figure 11.  Apparently as a first year grad student I didn’t realize there was a significant difference between luminosity distance and angular diameter distance.  So I calculated the physical extent for all of the sources using the luminosity distance.  At some point I realized this was wrong, and changed everything else (angular size when calculating a physical radius, etc) except for the physical sizes (not really sure how I missed that…) and so the physical sizes stayed as they were. 

This is only for the physical extents of the radio sources, so it is contained to Section 3.5 as well as Figures 19 and 20.  Hopefully I will get the corrections out soon.

If you are curious, I am attaching a plot of what Figure 11 should look like.  Of course, with a maximum separation of 120", it is impossible to have a source larger than 1.0 Mpc, no matter what the redshift.  In hindsight, that should have been a big clue to me that something was amiss.

Josh

Note: I am leaving VUW. Please update your contact details to my new email: Mel...@PeripetySci.com

________________________________________

A/Prof. Melanie Johnston-Hollitt

SKA Organisation Ltd. Board of Directors (New Zealand scientific representative),

Chair, Murchison Widefield Array Board,

Director Astronomy & Astrophysics,

School of Chemical & Physical Sciences

Victoria University of Wellington

PO Box 600

Wellington, 6140 New Zealand

Melanie.John...@vuw.ac.nz

+64 4 463 6543

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[Ray.N...@csiro.au]