YSO Meeting announcement

First meeting of the YSO group is on Saturday 22nd August, 7pm UTC (8pm British time). Come and find out how to watch stars being born!

1 Like

Sounds cool. I will not miss this one :slight_smile:

1 Like

This is really great Mike. I look forward to attending!

1 Like

Cheers - it will be good to have a grown-up present! :wink:

І would be grateful for the explanation of value our YSO observations. EBs give O-C trends, CV give outbursths and superhumps, Miras give periods variations etc, but what can we see on YSO light curves? Just clouds of dust or something more important?

Hi Mikhail - lots of ways our obs can be used - in fact I have just been reading an article that used AAVSO obs for V1977 Cyg! Because there are so many causes behind the variations of YSOs, there is no ‘one size fits all’ with cause and effect. At the meeting tonight I will be talking about this very issue and hope to get lots of questions like yours. But as a general point, AAVSO lightcurves can be used to refine and explain what is going on in the case of the star(s) and also the peristellar enviroment such as disc interactions, effects of a companion and so on.

1 Like

Thank you! But where is link to the meeting?..

Huge apologies! I sent the link details in an email to members of the group. We have just finished, and the fact that only about half-a-dozen attended was because HQ did not do their normal process of registration - so not everyone got to hear about it through the ‘proper channels’!
However, one thing we did decide tonight is that we will have 3-monthly meetings, which WILL be done with the proper registration. Therefore the next meeting (which you will all hear about!) will be a re-run of tonight’s meeting, so nobody should feel left out.

Regretfully search of V1977 Cyg on JAAVSO, ADS, Arxiv and Researchgate gives no result. I have been interested by the article due to modest partisipaton in observations.

No worries Mikhail! I was researching something else and came across the object which went under another name but which I felt (from its details) must be V1977 Cyg. A search in VSX revealed that it was. The alias is AS 442, and here is a link to the article.

Thank you for the link, Michael!
The structure of work is very close to V517 Cyg research. It is naturally: both stars are close neghbours :slight_smile:

Yes, I always observe these 2 together, though V1977 is rather bright in 50cm of aperture!