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[vsnet-chat 1574] NL: stars in Name List 74

NL: stars in Name List 74

   One of our colleagues have noticed there are several Hipparcos variables
newly classified as NL: in the 74-th special name list.

   The list of NL: stars

   FH Leo     8.33-8.62 Hp, spec. F8
   PQ Ser     8.12-8.22 Hp, spec. F0
   V1440 Aql  8.55-8.67 Hp, spec. B8, eclipsong binary with a period of 1.84d
   V2151 Cyg 12.08-12.89 Hp, spec. DA

   I wonder why these stars have been classified as NL: (NL stars are usually
considered as a subclass of cataclysmic variables).  I presume at least
the F-type spectrum (without emission lines) is incompatible with this
variability type.

Regards,
Taichi Kato

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