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[vsnet-chat 662] RX J0757.0+6306
- Date: Thu, 9 Oct 1997 12:22:48 +0900 (JST)
- To: vsnet-chat
- From: Taichi Kato <tkato>
- Subject: [vsnet-chat 662] RX J0757.0+6306
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
According to "Astronomical Time Series" (ed Maoz et al. 1997, Kluwer
Academic Press) p.195, Tovmassian et al. identified the ROSAT source
RX J0757.0+6306 (=1RXS J075700.5+630602) as a new, ultrashort-period
cataclysmic variable. The orbital period is 75+/-1.4 min. The optical
spectrum shows strong hydrogen emission lines, resembling that of WZ Sge.
Tovmassian et al. discussed in this paper the possibility of a DQ Her type.
This star may be worth monitoring for possible future outbursts.
The paper did not mention the accurate coordinates, but watching at
the ROSAT position (07h 57m 00s.5, +63o 06' 02" 2000.0) might be sufficient.
Regards,
Taichi Kato
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