COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                      NUMBER 623

                                      Konkoly Observatory
                                      Budapest
                                      1972 February 4


              A NEW FLARE STAR IN AQUILA


In the course of our spectral survey of infrared stars, we notice a
12-magnitude (pg) star, whose spectrum has shown a temporary emission line.
The position of the star is (estimated from the positions of BD stars on the
PSS) at R.A.=18^h55^m.9; Dec.=+6^06'.5 (1950).

Four spectra were obtained on three different nights with the Heidelberg
Schmidt Telescope. Kodak 1N plates (behind an RG 5 filter) were used to
record the spectral range between 6500A until about 8800A (Ackermann, 1970).
On plate no. 436 (see Table), an emission line at, the expected position of
H_alpha can be observed. We are tempting to classify the line as H_alpha-line
in emission.

Plate no.   Date            Spectrum
435       J.D.2441146.943      M3
439               160.937      Early M, with emission
437               160.967      Early M
466               180.846      M3

Sanduleak (1968) reported that in the spectra of flare stars which he detected
spectroscopically, temporary Balmer lines, including H_alpha, in emission can
be observed. Unfortunately, we have no spectral plate for the blue spectral
regions to check the spectrum of the star in Aquila. However, the appearance
of the H_alpha line on plate 436 is accompanied by a decrease in intensity of
the spectral regions to the red of that line. Spectral change similar to that
observed here, has been detected earlier by Chugainov and Gershberg (Lovell,
1971) in the spectra of genuine flare stars.

We want to thank the Director of the Max Planck Institut for Astronomy for
the facilities provided to us.


B. HIDAJAT
M.U. AKYOL
Landessternwarte and Max Planck
Institut for Astronomy, Heidelberg

References:

Ackermann, G., Astron. and Astroph., 8, 315, 1970. [BIBCODE 1970A&A.....8..315A ]
Lovell, Sir Bernard, Quart. J.R.A.S., 12, 98, 1971. [BIBCODE 1971QJRAS..12...98L ]
Sanduleak, N., I.B.V.S. 275, 1968.