Carbon Stars in Andromeda

1 year 8 months ago - 1 year 8 months ago #106841 by flt158
Carbon Stars in Andromeda was created by flt158
How many carbon stars are there within the border of Andromeda?
4, maybe 5. Wrong! There are 8 no less.
And here is the complete list with the individual dates I observed each of them in my William Optics 158 mm apochromatic refractor with description of colours.

1. SU Andromedae 1st October 2016 Good orange.
2. VX Andromedae 10th December 2016 Very strong orange /red. (Best carbon star in Andromeda)
3. AQ Andromedae 29th December 2016 Fine orange.
4. Hip 4252 29th December 2016 weak slight orange. (Worst carbon star in Andromeda)
5. UY Andromedae 13th January 2017 Very faint strong red about Magnitude 10.
6. ST Andromedae 20th January 2017 Very dim orange / red.
7. VY Andromedae 25th November 2017 Very faint orange. Magnitude 9.8.
8. EW Andromedae 8th December 2017 Moderately bright orange. Magnitude 9.

So there you have it. It took me 14 months to track them all down.
I will take any questions and comments of course.
And if I have missed another carbon, don't hesitate to inform the rest of us.
I am always ready to learn.
In the meantime, you might consider hunting these down.
I may try and update with magnitudes in the near future as the Andromeda constellation creeps around into my north western sky.

Clear skies everyone from Aubrey.
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1 year 8 months ago #106844 by Keith g
Replied by Keith g on topic Carbon Stars in Andromeda
I admire your perseverance Aubery ! Like most people, we go straight to the Andromeda galaxy an leave it at that !

Keith.

If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 year 8 months ago - 1 year 8 months ago #106845 by flt158
Replied by flt158 on topic Carbon Stars in Andromeda
It is great to hear from you once again, Keith.
I must confess M31 and M32 do take my breath away each time I study them.
But I was seriously desperate to observe those last 2 carbons before the end of the year.
I thought I had completed the constellation last January.
How depressed I was to notice 2 more in the western part of Andromeda.
But now I have found them I can rest easy.
Right now I wonder if it possible to observe all 8 in a single evening.
As you know I don't have GoTo. So it's starhopping all the way if I bother.
VX Andromedae is definitely my favourite.

I wonder could anyone provide an image.

Thank you for reading

Aubrey.

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1 year 8 months ago #106846 by Keith g
Replied by Keith g on topic Carbon Stars in Andromeda
Hi Aubery, I have found a decent list of carbon stars here in pdf format, there's plenty there!

www.astroleague.org/files/obsclubs/Carbo.../CarbonStar-List.pdf

I'm taking out my APM 120BT binoculars tonight to study M31, M32 &M110, I'll try to have a look at a carbon star as well. Looking forward to it !

Keith.

If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 year 8 months ago #106847 by flt158
Replied by flt158 on topic Carbon Stars in Andromeda
That is an excellent list, Keith.
It has 100 carbon stars. But I have come across 40 more.
And I have observed 51 carbon stars thus far.
I do hope you will to get to observe quite a few over the next few years.

Clear skies,

Aubrey.

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1 year 8 months ago #106848 by Keith g
Replied by Keith g on topic Carbon Stars in Andromeda
Well i’m Just back in from the cold at nearly minus 6! What a fabulous clear sky the polar air is very dry something we are not used to in Ireland.

My APM120’s performed brilliantly, I started in Auriga looking at M36,37,38 and NGC1907, IC417, NGC1931, 1893 and IC405, looking for tiny nebula so far away. I have never properly looked at these objects before,

I had the most amazing views of the Orion Nebula and the Pleiades also.

Finally I tracked down VX Andromadae, what a blast of colour at near magnitude 10! Best till last for tonight I think.

Keith.

If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 year 8 months ago #106850 by flt158
Replied by flt158 on topic Carbon Stars in Andromeda
Good evening, Keith.
VX Andromedae must be the reddest star in the sky right now in December 2017.
I will most certainly be observing it during the rest of the month.

Well done in spotting it, Keith!

Carbon stars are great fun when we estimate their magnitudes.

Aubrey.

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1 year 8 months ago #106851 by Keith g
Replied by Keith g on topic Carbon Stars in Andromeda
Hi Aubery, and try hind's crimson star in the constellation Lepus under Orion, it's known as R Leporis and it's colour is amazing too !

Keith.

If a telescope can fit into your backyard it's too small. If you can't move it, it's too big." -- John Dobson
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1 year 8 months ago #106852 by flt158
Replied by flt158 on topic Carbon Stars in Andromeda
Ohhh I know R Leporis extremely well.
But I have to say it appears to have lost some of its deep redness during the last 2 to 3 years.
The simple reason is it's quite bright.
Better to try when it is fainter.

My next red star will be the very dim Z Andromedae.
It's near EW Andromedae (see above).
Z And is not a carbon star though.
And it is faint.

Aubrey.

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