I have had Dr Halton "Chip" Arp on my mind a lot the last few weeks since his passing. It seems to me after the many many hours reading his papers over the years that I have lost a old friend. I thought for this OOTW I would show a few examples of his many discordant redshift galaxies. I know most of you know of the poster child of discordant redshift NGC 4319 and Mrk 205 here are a few others.
NGC 7603 AKA Arp 92
Pisces
RA
23 18 56
DEC
+00 14 38
Redshift
NGC 7603 Z .029524
NGC 7603B Z .055742
NGC 7603.jpg
It sure looks like the galaxies are interacting? What do you think?
This object is from the 1971 paper if you would like to read more http://adsabs.harvard.edu/abs/1971ApL.....7..221A
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NGC 1199 AKA Hickson 22A and 2Masxi j0303366-153740
Eridanus
RA
03 03 38
DEC
-15 36 50
Redshift
NGC 1199 Z.008573
2MASXi j0303366-153740 Z.044400
ARP 1978 NGC 1199.jpgsdss ngc1199.jpg
Arp thought that the 2 Masxi galaxy was foreground of NGC 1199? I am not so sure? What do you think?
This is from the 1978 paper http://adsabs.harvard.edu/abs/1978ApJ...220..401A
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NGC 1232 AKA Arp 41 and NGC 1232A
Eridanus
RA
03 39 45
Dec
-20 34 52
Redshift
NGC 1232 Z.005347
NGC 1232A Z.022012
NGC1232.jpg
NGC 1232 sure looks like it is merging with NGC 1232A to me this one is a real head scratcher. What do you think??
This Object is from the 1982 paper.http://adsabs.harvard.edu/abs/1982ApJ...263...54A
These are just a few of Arps examples of galaxies with discordant redshifts, I have enjoyed viewing many of them over the years and will continue to read and seek out others to observe. Halton "Chip" Arp might be gone but I am sure he will not soon be forgotten. I know that I will think of him every time I observe one of his "Peculiar Galaxies"! Thanks for the Memories!
"GIVE IT A GO AND LET US KNOW"
GOOD LUCK AND GREAT VIEWING!
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