COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS Number 2620 Konkoly Observatory Budapest 6 November 1984 HU ISSN 0374 - 0676 NEW FLARE STARS IN THE Mon I ASSOCIATION A search for flare stars in the region of Mon I association was carried out by one of the authors (L.R.) during the years 1974 - 1976 and 1981 in the Asiago Astrophysical Observatory of the University of Padova, with the 67/90/192 cm Schmidt telescope. The exposures were made on Kodak 103a-O plates without filter, using the chain method. During 55 hours of effective time 150 plates were obtained, each with five star images. The exposure time was 5 minutes for each image. As a result of the examination of these plates, which cover a region of about 25 square degrees centered at the cluster NGC2264, 29 new flare stars were discovered. The new flare stars are listed in Table I where The following data are given in the consecutive columns: serial number, name of the star, equatorial coordinates, magnitude at minimum, amplitude of the flare-up and date of the flare. The discussion of the data will appear in the publications of the Byurakan Observatory. Table I New flare stars in the region of Mon I ---------------------------------------------------------- No. Star alpha_1900 delta_1900 m_pg A_pg Date name 1 6h28.2m 10d06'.7 16.6m 1.7m Jan.19 1974 2 29.2 10 32 .3 16.6 0.6 Dec.16 1974 3 30.0 9 32 .8 17.0 0.7 Feb.5 1975 4 32.0 11 19 .5 18.5 3.5 Feb.6 1974 5 32.5 8 18 .6 16.3 1.0 Oct.28 1973 6 32.5 9 39 .6 16.4 0.6 Apr. 3 1976 7 33.2 9 16 .8 16.6 1.3 Apr. 3 1976 8 33.5 8 26 .6 16.8 1.0 Dec. 9 1974 9 33.8 9 23 .4 16.7 0.7 Jan.22 1976 10 33.8 9 25 .6 15.6 0.9 Sep. 9 1974 0.6 Dec.18 1974 Table I (cont.) -------------------------------------------------------------------- No. Star alpha_1900 sigma_19000 m_pg A_pg Date name -------------------------------------------------------------------- 11 6h34.0m 8d27'.7 17.0m 1.0m Dec. 9 1974 12 34.1 10 25 .7 19.0 4.2 Nov. 17-18 1974 13 34.2 10 27 .7 16.7 0.5 Feb. 27 1976 14 34.3 9 16 .2 20.3 4.5 Jan. 19 1974 15 34.3 9 33 .7 17.8 2.0 Dec. 6 1981 16 34.8 10 05 .6 16.7 1.0 Oct. 31 1973 17 35.1 8 57 .0 17.2 0.6 Feb. 9 1975 18 V418 35.3 9 27 .8 18.2 2.7 Oct. 31 1973 19 35.8 9 41 .8 19.2 2.7 Dec. 15 1974 20 36.0 9 57 .8 18.9 2.3 Dec. 21 1974 21 36.1 9 54 .8 18.1 1.8 Nov. 18 1974 22 36.3 9 38 .8 17.8 1.4 Jan. 10 1975 23 37.3 9 17 .8 16.7 0.7 Dec. 6 1974 24 37.3 10 28 .6 17.0 0.6 Feb. 5 1975 25 37.9 9 40 .9 17.3 1.0 Feb. 8 1975 26 38.3 9 19 .0 17.2 1.0 Feb. 5 1975 27 38.7 8 20 .0 17.0 0.5 Dec. 9 1974 28 42.2 9 11 .3 16.1 0.7 Dec. 11 1975 29 45.3 10 31 .5 16.1 1.1 Feb. 24 1976 L. ROSINO E.S. PARSAMIAN and H.S. CHAVUSHIAN Asiago Astrophysical Byurakan Astrophysical Observatory Observatory, Padova Byurakan, Armenia, U.S.S.R. Italy