[vsnet-chat 3611] Anniversary of MV1K

[Seiichi Yoshida <comet@aerith.net>]

MISAO Project Announce Mail (September 16, 2000)

Hello. I am Seiichi Yoshida working on the MISAO project.

The number of MisV stars, the new variable stars discovered in the
course of the MISAO Project, exceeded 1000 when 23 new ones were
reported on Sept. 6. It is about one and a half year since the
discovery of the first MisV star. 

I really thank image contributors for their valuable images offered to
the project, the VSOLJ (Variable Star Observers' League in Japan) and
the VSNET (Variable Star Network) members for advice on variable
stars researches, and everyone.

The memorial 1000th MisV star is the star mentioned below. The
variability was discovered from images taken by Nobuo Ohkura, Okayama,
Japan, comparing with images taken by KenIchi Kadota, Ageo, Saitama,
Japan. It is probably a faint red variable star.

MisV1000
  R.A.  20h12m51s.13
  Decl. +26o42'04".1  (2000.0)
  Mag.  12.1C-13.2C
  Type  ?
= USNO-A2.0_1125.15334491  20 12 51.119  +26 42 06.27  15.4R  19.0B
= IRAS 20107+2632  R.A.=20 12 50.82  Decl.=+26 42 03.1  (16 x 8", p.a.=67)  flux(12)=0.49  flux(25)=0.31  flux(60)=<0.44  flux(100)=<3.76  79% variable

All of the new variable stars of the MISAO Project were discovered
from Japanese amateur images. The image contributors to the MISAO
Project are as follows.

	Contributor	   Number of images	Number of
						examined images
        -------------------------------------------------------
	Akimasa Nakamura            425              308
	Arne A. Henden                1                1
	Hideo Fukushima               9                9
	KenIchi Kadota            10081             9497
	Ken'ichi Torii                1                1
	Masayuki Suzuki      about 2000                0
	Nobuo Ohkura               5968             4573
	Seiichiro Kiyota             10               10
	Toshikazu Muramatsu          46               46
	Yasukazu Ikari             9674             4354

Because a variable star is discovered when there is a difference
between two images, both the image contributors of the new image and
the compared past image become discoverers in the MISAO Project. 
Among 1009 MisV stars, Kadota discovered all of the 1009 stars, and
Ohkura discovered 92 of them.

All of the stars until MisV0882 were discovered from Kadota's images.
However, Ohkura started the regular survey work and offered the images
to the project since 2000 spring. So most of the stars after MisV0883
were discovered by Ohkura and Kadota in collaboration.

Now about 14 thousands images taken by Nakamura, Kadota, Suzuki,
Ohkura and Ikari are waiting for variable star search. After checking
those images, the discoverers of the MisV stars will be more
variegated, as the project name represents.

The images offered to the MISAO Project which contain stars fainter
than 13 mag cover 12 percent of the sky north of Decl. -40 deg. After
this when an image is offered, it often overlaps on the past images 
in the database and can be examined for new objects search
immediately.

No images have been offered to the MISAO Project from overseas
amateurs yet. We are inviting for images from all over the world. If
you have some interests, please make a contact to us.

P.S.
The past MISAO project announce mails are available at:
  http://vsnet.aerith.net/misao/

--
Seiichi Yoshida
comet@aerith.net
http://vsnet.aerith.net/

VSNET Home Page

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