From jop at astro.columbia.edu  Mon Jun  6 15:18:18 2022
From: jop at astro.columbia.edu (Joe Patterson)
Date: Mon, 6 Jun 2022 15:18:18 -0400
Subject: (cba:news) U Sco, yes... but also V1674 Her!
In-Reply-To: <e211453d-ecdc-c271-7091-90e979c28982@telenet.be>
References: <e211453d-ecdc-c271-7091-90e979c28982@telenet.be>
Message-ID: <a526b713-f3a1-36f9-db75-d9fb4f0ccc71@astro.columbia.edu>


Hi CBAers,

By now , most of you have heard about this.  It certainly is 
important!... but I hope you won't forget about last year's celebrity, 
V1674 Her.  Magnitude 17.0 and delivering string signals at 501 s and 
3.5 hours, and we're anxious for another few weeks of data to finish up 
our paper!

joe

-------- Forwarded Message --------
Subject: [vsnet-alert 26800] Re: [cvnet-outburst] U Sco outburst
Date: Mon, 6 Jun 2022 20:55:44 +0200
From: Josch Hambsch <hambsch at telenet.be>
To: cvnet-outburst at groups.io, vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp 
<vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>
CC: baavss-alert at groups.io <baavss-alert at groups.io>

I have added it to my observing program for tonight.

Lets hope for a positive confirmation.

Regards,

Josch

On 06.06.2022 20:50, Hiroyuki Maehara wrote:
> Moriyama-san has reported that U Sco is in outburst.
> Follow-up observations are urgently required.
>
> SCOU           20220606.56582 <173C    Myy.VSOLJ
> SCOU           20220606.72030 114C     Myy.VSOLJ
>
> Observer: M.Moriyama(Nagasaki, Japan)
> Instruments : 25cmSCT + ST-10XME
>
>
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From jop at astro.columbia.edu  Fri Jun 24 12:52:10 2022
From: jop at astro.columbia.edu (Joe Patterson)
Date: Fri, 24 Jun 2022 12:52:10 -0400
Subject: (cba:news) V1674 Her... advertisement
Message-ID: <81107169-1f43-f973-bf57-cfef52357305@astro.columbia.edu>

Dear CBAers,

I'm a few days away from sending this off to ApJ Letters.  The 
assemblage of periods and rates of period change are certainly the most 
sensational I've encountered in my career... and it's a short, 
easy-to-understand paper.

I'll send it next week to you, and also astro-ph.  With big shots like U 
Sco lurking about, it's sometimes hard for a little old mere nova to get 
attention.  So, with the Moon finally out of the way, I'm hoping you can 
give this little star some close attention now.  The spin period changes 
at a rate ~100x faster than anything we have seen before, so we really 
need to hammer away to keep track of it  LONG runs are especially 
valuable.

Check to make sure we've got your contact info right.

joe
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From jop at astro.columbia.edu  Wed Jun 29 07:08:01 2022
From: jop at astro.columbia.edu (Joe Patterson)
Date: Wed, 29 Jun 2022 07:08:01 -0400
Subject: (cba:news) V1674 Her again...
Message-ID: <6b4fed7a-3688-b0d5-ab35-c7c6a6dbaf04@astro.columbia.edu>


Hi CBAers,

Quick note on this paper, just about ready for initial submission.  I 
notice that in recent submitted data, there are a few inconsistencies 
between JD (in the data) and calendar date (in the header of the 
message).  Maybe all of this comes from the changeover in calendar date 
that often occurs in the middle of the European night.  Because of this, 
I've always gone with the JD numbers in the data.

But I'd like to be sure for this one - because the period is short, the 
rate of period change is high, and there are no blindingly obvious 
features (deep eclipse?) in the light curve to answer the question.

You don't need to answer if my assumption is correct.  Maybe something 
like "May 26/27" in the header is useful, if it applies.

joe
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