[vsnet-obs 2813] Re: Outburst of SW Vul

[John Isles <0002032694@mcimail.com>]

-- [ From: John Isles * EMC.Ver #2.3 ] --

Mr. Kato,

You should ignore the report by Glasby, and all his writings.  Most of his
supposed observations were simply fictitious.  His work was repudiated many
years ago by the British Astronomical Association.  If you like, I can give you
references to the published announcements.

Best wishes -- John Isles.


-------- REPLY, Original message follows --------

Date: Sunday, 19-May-96 09:47 AM

From: Kato (vsnet)             \ Internet:    (tkato@kusastro.kyoto-u.ac.jp)
From: Kato (vsnet)             \ Internet:    (tkato@kusastro.kyoto-u.ac.jp)
To:   vsnet obs                \ Internet:   
(vsnet-obs@sanma.kusastro.kyoto-u.ac.jp)

Subject: [vsnet-obs 2805] Re: Outburst of SW Vul

Tonny Vanmunster wrote:

> SW Vul, an UG object located at RA = 20h00m05.14s, Decl = +22d56'10.7" 
> (J2000.0) is undergoing a (very?) rare outburst !
> The object (varying between mag 14.5p and 18.5p) is clearly visible on an
> unfiltered CCD image, obtained at the CBA Belgium (using a 10" f/6.3 SCT and
> ST-7 CCD) on May 19.066 UT. It is located VERY close to a 13.4 comparison
> star (sequence T. Kato, Ouda Station, Japan) and therefore difficult to
> estimate on the image. Its unfiltered mag is approx. 15.9.
> 
> Does anyone have additional information on this object ?

   Though I don't have so much informtion on this object as I usually have on
other CVs, the object was discovered by Rosino in 1948.  Glasby (if I remember
correctly) gave an outburst cycle length of 13 days.  My earlier inspection of
the SW Vul field incidentally included in photographs of M27 also supported
rather frequent outbursts.  Even though this material was not statistically
designed, the conclusion by Glasby seemed to me basically correct.

Regards,
Taichi Kato


-------- REPLY, End of original message --------

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