Arp 37 (M77; NGC 1068)

   Arp 37 is the first of the class Spirals with LSB Companions on Arms.  I'm unable to decide exactly which object(s) Dr. Arp identified as the companion(s).  It could be either of the condensations northeast of the core, the bright condensation southwest of the core, or one of the galaxies at the outer edge of the halo (at 4 and 6 o'clock).  His Atlas note is "Seyfert galaxy.  Small knot in arm", but that doesn't really clarify it.  None of the candidates seems to fit the "low surface brightness companion on arms" description very well.  His field was only 3.6' x 2.8', so none of the very large halo (best seen in the negative and color images) was included.

The color image shown below was cropped from a much larger field.  You can click on it to be taken to a full size image.  While the halo is very faint, to me it seems yellower than the central part of the galaxy, indicating that these stars may be, on average, older.

Atlas Image

 

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