COMMISSION 27 OF THE I. A. U.
        INFORMATION BULLETIN ON VARIABLE STARS
                    Number 2366

                                    Konkoly Observatory
                                    Budapest
                                    8 July 1983

                                    HU ISSN 0374-0676



        LIGHT AND RADIAL VELOCITY VARIATIONS OF HR 6127


  The chemically peculiar star HR 6.127 (A2p, m_V=5.74) was observed at the
Skalnate Pleso Observatory with the 60 cm photometric telescope in 18 nights
during the period December 1981 - July 1982. The photoelectric observations
were made in an intermediate-band filter centered to 526 nm with a 19 nm
halfwidth. BD +54d1809 (A3, m_V=7.8) served as a comparison star. The number
of observations per night varied from 10 to 140. The standard error of 
observations was 0.001 mag (0.002 mag in two nights). The amplitude of the light
variations is 0.017 mag. An interval of 0.5 - 175 days was searched for the
period of variability by a program written according to Morbey (1978). The
best fitting yields to the following ephemeris:

          JD min = 2 444 985.6031 + 2.144202 x E

The light curve is represented in Figure 1. Dots are nightly means. The 3sigma
value is marked at the left side of Figure 1.

                           [FIGURE 1]

 The radial velocities of the Ca II K line in the spectrum of HR 6127 were
measured by a TV electronic comparator of the Astronomical Institute of
Slovak Academy of Sciences. The radial velocities were measured on 23 
spectrograms taken at the Coude spectrograph of the 2 m telescope of Ondrejov
Observatory with the dispersion 0.85 nm/mm. The amplitude of 5.6 km/s was
found. In the radial velocities data set the following ephemeris was found

       JD min = 2 444 370.412 + 2.144039 x E

The radial velocities of the CaII K line plotted versus photometric period
(Figure 2) formed a curve with the minimum shifted to phase 0.1 of the light
curve period.

                           [FIGURE 2]



                J. ZIZNOVKSY
            Astronomical Institute
            Slovak Academy of Sciences
            059 60 Tatranska Lomnica
            Chechoslovakia





Reference:
Morbey, C.L.: 1978, Publ. Dominion Astrophys. Obs. Victoria, 15, 105 [BIBCODE 1978PDAO...15..105M ]