[vsnet-chat 1576] Re: NL: stars in Name List 74

[Berto Monard <lagmonar@csir.co.za>]

Dear Kato-san,

I remember a previous GCVS list with NL(:)s where a number of what I
thought to be confirmed Z And systems were tabled. 
Of special personal interest was Hen 3-916 which I have been
monitoring some time ago.
I looked up its 'colours' in USNO_A2.0 and found it to be a reddish
star (as was measured by U Munari earlier) while other neighbouring
stars were definitely more 'white' proving it was not from a reddening
effect.   
I just wonder why they are now considered NL(:)

Regards,

Berto
Pretoria
>>> Taichi Kato <tkato@kusastro.kyoto-u.ac.jp> 01/25 4:55 AM >>>
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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