The following stars were included in the HIPPARCOS list of RR Lyraes but are probably not RR Lyraes:
based on 3
well-placed observations. The HST Guide Star Catalogue shows a star at
exactly the HIPPARCOS coordinates and this is the star we observed
(
;
). However, there
is another star of similar brightness approximately 1 arcmin away
and probably this is the variable.
, strong molecular absorption bands) with radial velocity variations
of 
. A search of the HST Guide
Star Catalogue at the HIPPARCOS position (
; 
)
shows no other star of similar brightness within a 6 arcmin radius. The
star is clearly a variable but has been missclassified as an RR Lyrae.
but no period is given. Our spectra show a variable radial
velocity, 
, but the lines are broader and
shallower than for other RR Lyraes. Probably the
star is a short-period Eclipsing Variable.
and IK Hya 
). The stars therefore show the characteristics of the so-called
Anomalous Cepheids, namely the periods imply fundamental mode pulsation (FW
Lup P = 0.48 days, IK Hya P = 0.65 days) but the light and velocity curves
are more compatible with overtone pulsation. For further discussion of
Anomalous Cepheids see Teays & Simon (1985) and for other
candidate stars see Paper I.
Acknowledgements
We would like to thank Eduardo Ojero for his help during the observations in Calar Alto and the financial support of NATO through Grant number CRG 940746.