New southern variable stars

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  • I43

    Mouv. pour I jour

    + 2 1 S

    16 11

    6 + I - 4

    9 '3 18 23 2 7

    3 2 36 40 44 48

    - 5 1 - 5

    344 I

    8

    -O020. ' I

    o 40.7 I 1.4 I 2 2 . 1

    I 42.8 2 3.5 2 24.1 2 44.5 3 4.5 3 2 4 . 2 3 43.6 4 2 . 5 4 20.9 4 38.7

    5 1 2 . 1 4 55.8

    27.6

    I897

    0,149

    Sept. 2 0

    24 26 2 8

    39

    4 6 8

    2 2

    Oct.

    I 0 I2

    '4 16 I 8 2 0

    2 2

    0.0981

    C?

    Professor J . C. Kapteyn has from time to time com- municated to me lists of suspected variable stars, or, at least, of stars whose estimated magnitudes differ greatly according to different authorities, or which occur in the

    f h 3 l m 5 2 ' 32 3' 33 0 33 2 0 33 30 33 29 33 18 32 58 32 29 31 5 1 3' 3 30 6 29 0 2 7 46 26 24 24 54

    4 23 '7

    Cordoba DM. and are wanting in the C.P .D. and vice versa. By systematic visual observation of the stars contained

    in these lists Mr. R. T. A. I n n n ~ s has proved the four foll- owing additional stars to be variable.

    - Mouv. pour I jour

    - 10'3 10.3 10.3 I 0.4 10 .4 10.3 10.2

    10.0

    9.9 9.7 9.5 9.3 9.0 8.7 8.3 7.9

    - 7 5

    0.173 0.1044 t 0.166 0.1ot~2 0.158 0.09'18

    1897

    Oct. 24 26 28 30

    Nov. I 3 5 7 9

    I 3 '5 ' 7 '9

    .2 3 2 5

    I 1

    2 1

    a

    +h 2 I"34' ' 9 44 '7 49 '5 49 ' 3 45 * I 37 9 2 7 7 I4 5 0

    2 45 I 0 30 3 58 '5

    56 2 53 50 5 1 4 ' 49 35

    3 47 33

    Paris 1897 Aoh.

    New Southern Variable Stars.

    Mouv. pour I jour

    ~

    - 54! 57 59 61 64 65 66 67 67 67

    67

    65 64

    -62

    68

    66

    - 5" 4213 5 56.0 6 3.7 6 20.3 6 30.7 6 40.0 6 48.0 6 54.8 7 0.4 7 4.7 7 7.7 7 9.4 7 9.9 7 9.2 7 7.2 7 4.0

    -6 5 9 ~ 6

    Mouv. pour I jour

    - ./lo 6.5 6.0 5.3 4 3 4.2 3.6 3.0 2.3 ' 7

    - 0.4

    0.8 1.4

    +2.0

    1 .o

    +0.2

    I44

    1 ~

    r2Az

    0.138

    0.126

    0.1 13

    0 . I00

    0.086

    log A

    0.1019

    0.1098

    0 . 1 2 2 2

    0.1601

    (I) This star does not appear in Thome. Visual estimates with the 7 inch Equatorial Febr. 13 to June 14 prove it to vary within the limits 9.0 to 9.7.

    (2 ) Visual estimates at Cordoba and Washington range from 6 to 8 mag., C.P.D. photographs 1888 and 1890 from 7m9 to 9910. The star is orange coloured (colour 6.8 on Chandler's scale). Mr. Innes' visual observations prove certain variability 6.8 to 7.8, probably in a period of 45 days.

    (3) This star does not occur on any of the three plates taken for the C.P.C. whilst Th. gives mag. 7.8. Mr. Innes has made th,e following visual estimates :

    1897 1897 April 2 8m7 June 1 2 9415

    3 8.9 I4 9.5 I I 8.9 2 9 9.9

    On April 2 the star is estimated $red coloureda and

    (4) C. P. D. 9.4 to missing. Visual observations by Mr. Innes :

    on April 3 *yellow