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[vsnet-chat 1898] Re: [AAVSO-DIS] Cluster variables
- Date: Thu, 20 May 1999 10:42:28 +0900 (JST)
- To: aavso-discussion@physics.mcmaster.ca
- From: Taichi Kato <tkato>
- Subject: [vsnet-chat 1898] Re: [AAVSO-DIS] Cluster variables
- Cc: vsnet-chat
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
Another potential challenge. AC 211 in M15 is a low-mass X-ray binary
(=4U 2127+12), having an optical range 15.9-16.4V, period 8.5 h. M15 also
contains a planetary nebula K648, whose existence might be detected
visually.
Regards,
Taichi Kato
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