II/238 Dahlmark variables (Dahlmark, 1982-2001)
Dahlmark variables.
Dahlmark L.
<IAU Inform. Bull. Var. Stars, 2157, 2878, 3855, 4329, 4458, 4642, 4734,
4898, 5181 (1982-2001)>
=1982IBVS.2157....1D 1982IBVS.2157....1D
+1986IBVS.2878....1D 1986IBVS.2878....1D
+1993IBVS.3855....1D 1993IBVS.3855....1D
+1996IBVS.4329....1D 1996IBVS.4329....1D
+1997IBVS.4458....1D 1997IBVS.4458....1D
+1998IBVS.4642....1D 1998IBVS.4642....1D
+1999IBVS.4734....1D 1999IBVS.4734....1D
+2000IBVS.4898....1D 2000IBVS.4898....1D
+2001IBVS.5181....1D 2001IBVS.5181....1D
ADC_Keywords: Stars, variable ; Photometry
Description:
Since 1967 32 fields in the Milky Way were observed for variable stars.
* New variable stars in Cygnus (1982IBVS.2157....1D 1982IBVS.2157....1D)
[8/65] Survey of an area of 20°x15° centered at 20h50m,
+45° in Cygnus. This area has been followed
photographically in two colours during the period 1967 to
1981. As a rule one observation per summer was obtained.
* New variable stars in Cassiopeia (1986IBVS.2878....1D 1986IBVS.2878....1D)
[66/105] Survey in an area 20°x15° centered at 1h06m,
+60°01'. Seventeen plate pairs exposed in the period
1967 to 1981 were collected and treated in the same way
as described in the previous report. These observations
provide approximate B and V magnitudes. In addition, six
exposures were obtained in the period August 8 to
September 23, 1985 on Technical Pan film.
* New variable stars in Cygnus, Lyra and Vulpecula (1993IBVS.3855....1D 1993IBVS.3855....1D)
[106/185] Area of 20°x15° centred at 19h46m +30°.
* New variable stars in Cygnus, Lacerta and Andromeda (1996IBVS.4329....1D 1996IBVS.4329....1D)
[186/220] Area of 20°x15° centered at 20h40m, +45° (1950).
* New variable stars in the northern Milky Way (1997IBVS.4458....1D 1997IBVS.4458....1D)
[221/280] Area of 20°x15° centered at 22h42m, +60° (1950)
* New variable stars in the northern Milky Way (1998IBVS.4642....1D 1998IBVS.4642....1D)
[281/315] Results of a variable-star search in the 20°x15°
area centered at 20h18m, +60° (1950).
* New variable stars in Andromeda and Cassiopeia (1999IBVS.4734....1D 1999IBVS.4734....1D
[316/341] Results of a variable-star search in the 20°x15°
area centered at 0h30m, +45° (1950).
* New variable stars in Lyra and Cygnus (2000IBVS.4898....1D 2000IBVS.4898....1D)
[342/366] Results of a variable-star search in the 20°x15°
area centered at 19h00m/+45° (1950).
* New variable stars along the northern Milky way (2001IBVS.5181....1D 2001IBVS.5181....1D)
[367/420] Results of a variable-star search in the 20°x15°
area centered at 21h22m/+° (1950).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tab82-96.dat 89 213 New variables in Cygnus (8/65), Cassiopeia (66/105),
Cyg, Lyr and Vul (106/185), And, Gyg, Lac (186/220)
northern Milki Way (221/280)
tab97-01.dat 106 213 New variables in the northern Milky Way (221-315),
And and Cas (316-341), Lyra and Cygnus (342-366),
along the northern Milky Way (367-420)
b-v97-98.dat 75 101 New variables in northern Milky Way (221-315)
b-r99-01.dat 91 118 New variables in And and Cas (316-341),
Lyra and Cygnus (342-366),
along the northern Milky Way (367-420)
not82-96.dat 80 41 Notes of tab82-96.dat file
not97-01.dat 80 42 Notes of tab97-01.dat file
notescol.dat 80 44 Notes of b-r99-01.dat and b-v97-98.dat files
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See also:
IV/29 : Identification of Dahlmark variables (Skiff+, 1997)
Byte-by-byte Description of file: tab82-96.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- LD [8/280] LD (Lennart Dahlmark) number
5- 13 A9 --- Name LD designation or other name
16- 17 I2 h RAh Right ascension (1950)
19- 20 I2 min RAm Right ascension (1950)
22- 25 F4.0 s RAs Right ascension (1950)
27 A1 --- DE- Declination sign (1950)
28- 29 I2 deg DEd Declination (1950)
31- 32 I2 arcmin DEm Declination (1950)
34- 35 I2 arcsec DEs ? Declination (1950)
37- 40 F4.1 mag Vmax Maximum V magnitude (G1)
41 A1 --- --- [-]
42 A1 --- l_Vmin [(<>] Limit flag on Vmin
43- 46 F4.1 mag Vmin ?=45 Minimum V magnitude (G1)
48 A1 --- l_B-V [>)] Limit flag on B-V
49- 52 F4.1 mag B-V ? B-V colour index
53 A1 --- u_B-V [?] Uncertainty flag on B-V
55- 59 A5 --- Type Type of variable
60- 66 I7 d Epoch ? Epoch of maximum
68- 70 I3 d Per ? Period
71 A1 --- u_Per [?] Uncertainty flag on Per
73 A1 --- n_Per [c] c: period constant between 1967 and 1992
75- 78 F4.1 mag NStar ? Approximate V magnitude of a close neighbour
star that may influence magnitude
estimations made with an instrument with
small focal length.
80- 89 A10 --- Notes Notes, separated by comma, in not82-96.dat file
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Byte-by-byte Description of file: tab97-01.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- LD [221/420]? LD number
5- 13 A9 --- Name Name (LD if exist)
14 A1 --- n_Name [*] *: Note in not97-01.dat file
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 26 F5.2 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs Declination (J2000)
40 A1 --- rPos [AGSMTg] Source of the position (1)
42- 50 A9 --- GSC GSC designation
52- 62 A11 --- IRAS IRAS designation
63- 85 A23 --- OName Other names (2)
87-106 A20 --- Rem Remarks
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Note (1): The coordinates were extracted from either as follows:
G = GSC, Cat. I/220
A = U.S. Naval Observatory A1.0 catalogue, Cat. I/243
S = Goddard SkyView facility (Scollick 1997,
http://skview.gsfc.nasa.gov/cgi-bin/v3.0/skyview_advanced.pl )
M = 2MASS, Cat. <B/2mass>
T = Tycho-2 Cat. I/259
g = GSC-2.2, Cat. I/271
Note (2): Other names:
DO = Dearborn red stars catalogue (Lee et al., 1947, Cat. II/68)
MSX = MSX catalogue (Cat. V/107)
[D75] = Dolidze, 1975AbaOB..47..171D 1975AbaOB..47..171D
[PCC93] = Palagi et al., 1993, Cat. J/A+AS/101/153
JHHMMSS.ss+DDMMSS.s = ROTSE1 name. Akerlof et al., 2000, Cat. J/AJ/119/1901
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Byte-by-byte Description of file: b-v97-98.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- LD [8/351]? LD number
5- 13 A9 --- Name LD designation or other name
14 A1 --- n_Name [*] Note in notescol.dat file
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 25 F4.1 s RAs Right ascension (J2000)
27 A1 --- DE- Declination sign (J2000)
28- 29 I2 deg DEd Declination (J2000)
31- 32 I2 arcmin DEm Declination (J2000)
34- 35 I2 arcsec DEs ? Declination (J2000)
37- 40 F4.1 mag Vmax Maximum V magnitude (G1)
41 A1 --- --- [-]
42 A1 --- l_Vmin Limit flag on Vmin
43- 46 F4.1 mag Vmin Minimum V magnitude (G1)
48 A1 --- l_B-V Limit flag on B-V
49- 52 F4.1 mag B-V ? B-V colour index
55- 59 A5 --- Type Type of variable
60- 66 I7 d Epoch ? Epoch of maximum
70- 72 I3 d Per ? Period
73 A1 --- u_Per [?:] Uncertainty flag on Per
75 A1 --- n_Per [s] s: short
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Byte-by-byte Description of file: b-r99-01.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 I3 --- LD [8/420]? LD number
5- 13 A9 --- Name LD designation or other name
14 A1 --- n_Name [*] Note in notescol.dat file
16- 17 I2 h RAh Right ascension (J2000)
19- 20 I2 min RAm Right ascension (J2000)
22- 26 F5.2 s RAs Right ascension (J2000)
28 A1 --- DE- Declination sign (J2000)
29- 30 I2 deg DEd Declination (J2000)
32- 33 I2 arcmin DEm Declination (J2000)
35- 38 F4.1 arcsec DEs ? Declination (J2000)
40- 43 F4.1 mag Vmax Maximum V magnitude (G1)
44 A1 --- --- [-]
45 A1 --- l_Vmin Limit flag on Vmin
46- 49 F4.1 mag Vmin Minimum V magnitude (G1)
52- 55 F4.1 mag b-r ? b-r colour index
58- 62 A5 --- Type Type of variable
63- 71 F9.1 d Epoch ? Epoch of maximum
72- 73 A2 --- l_Per [≤ ] Limit flag on Per
74- 79 F6.2 d Per ? Period
80 A1 --- u_Per [?:] Uncertainty flag on Per
82- 91 A10 --- Range Period range 1967-1999
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Byte-by-byte Description of file: not82-96.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- Note Note number
5- 80 A76 --- Text Text of the note
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Byte-by-byte Description of file: not97-01.dat notescol.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
10- 80 A71 --- Text Text of the note
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Global notes:
Note (G1): Magnitudes with an accuracy of ±0.2 magnitudes
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History:
From electronic version of the journal
(End) James Marcout, Patricia Bauer [CDS] 18-Jan-2002