Re: APOD: Spiral Galaxy NGC 6744 (2022 Jun 23)
Posted: Sun Jun 26, 2022 4:11 am
I'd say there is a bar.
Ann
APOD and General Astronomy Discussion Forum
https://asterisk.apod.com/
Maybe. But I'm far from convinced. In particular, the odd coincidence of it lining up with the tip axis... which is exactly the direction we would expect to see both artifacts and optical illusions in... is suspicious.
Chris Peterson wrote: ↑Sat Jun 25, 2022 6:14 pm ...As the galaxy is a disc, that would imply that the core is, as well.
Indeed. However the blue dot I was referring to lies well outside NGC 6744, almost near the bottom of the image. I can’t post an image apparently, but if you follow NGC 6744A almost straight down to the small group of 4 stars near the image edge, then the blue one is just above and right of that small group. Not very important, I know. But remarkably blue it is.Ann wrote: ↑Thu Jun 23, 2022 6:53 pmThere are several little blue dots scattered in the disk. They are almost certainly clusters.Locutus76 wrote: ↑Thu Jun 23, 2022 6:13 pmA similar darker blue star can be found at the exact opposide side of NCC 6744, around the 4:00 line near the edge of the image…PoppaPaul wrote: ↑Thu Jun 23, 2022 4:45 pm In the June 23, 2022 APOD of the Spiral Galaxy NGC 6744, there is a blue dot along the ~11:00 line moving away from the galaxy. Quite a few of the stars have a light blue color, but this star(?) has a distinctly different color (a darker blue) from all the others. What is it? and what gives it this deeper blue color?
In fact, they are clusters. Because NGC 6744 is a very big galaxy with quite small clusters.
Ann
I'm not finding that. But the bluest round thing I see is this one in the top left quadrant:Locutus76 wrote: ↑Wed Jul 13, 2022 3:07 pmIndeed. However the blue dot I was referring to lies well outside NGC 6744, almost near the bottom of the image. I can’t post an image apparently, but if you follow NGC 6744A almost straight down to the small group of 4 stars near the image edge, then the blue one is just above and right of that small group. Not very important, I know. But remarkably blue it is.
johnnydeep wrote: ↑Wed Jul 13, 2022 3:30 pmI'm not finding that. But the bluest round thing I see is this one in the top left quadrant:Locutus76 wrote: ↑Wed Jul 13, 2022 3:07 pmIndeed. However the blue dot I was referring to lies well outside NGC 6744, almost near the bottom of the image. I can’t post an image apparently, but if you follow NGC 6744A almost straight down to the small group of 4 stars near the image edge, then the blue one is just above and right of that small group. Not very important, I know. But remarkably blue it is.
I can't believe that's "just" a cluster so far away from NGC 6744... or is it?