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II/196         Vilnius Photometry in two Nebulae (Straizys et al., 1993)

Interstellar extinction in the vicinity of the North America and Pelican nebulae Straizys V., Kazlauskas A., Cernis K., Vansevicius V. <Baltic Astron. 2, 171 (1993)> =1993BaltA...2..171S
ADC_Keywords: Photometry, Vilnius ; Nebulae Keywords: North America Nebula - Pelican Nebula - interstellar extinction - dark clouds - Vilnius photometric system - classification of stars Description: The results of photoelectric photometry of 564 stars in the Vilnius seven-color system in three areas near the North America and Pelican nebulae are given. Photometric spectral types, absolute magnitudes, colour excesses, interstellar extinctions and distances of the stars are determined. We find that the dark cloud separating both nebulae is at 580pc distance. A number of stars immersed into the dark cloud have been found. It seems that the dark cloud extends to south down to 40deg declination. The area southwest of α Cyg in the declination zones 42 and 43deg is comparatively transparent at least up to 1kpc. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2 101 212 Results of photometry in the dark cloud area table3 112 255 Results of photometry in the area 40deg-41deg table4 112 97 Results of photometry in the area 42deg-43deg table5 41 179 Quantification, extinction and distance determination in the dark cloud area table6 51 230 Quantification, extinction and distance determination in the 40deg-41deg area table7 51 91 Quantification, extinction and distance determination in the 42deg-43deg area ant.tex 103 17 TeX definitions ant2.tex 105 17 TeX definitions ant3.tex 88 13 TeX definitions ant4.tex 88 18 TeX definitions bal.tex 52 83 TeX definitions table2.tex 162 293 TeX version of table2 table3.tex 165 345 TeX version of table3 table4.tex 180 181 TeX version of table4 table5.tex 88 214 TeX version of table5 table6.tex 89 267 TeX version of table6 table7.tex 89 115 TeX version of table7
Byte-by-byte Description of file: table2
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 4 A1 --- n_Seq [*] Individual note, see (1) 6- 12 A7 --- BD BD designation 14- 19 A6 --- Metik Metik number (Metik, 1960) 21- 22 I2 h RAh Right ascension 1950 24- 25 I2 min RAm Right ascension 1950 27- 28 I2 s RAs Right ascension 1950 29 A1 --- DE- Declination sign 30- 31 I2 deg DEd Declination 1950 33- 36 F4.1 arcmin DEm Declination 1950 38- 41 A4 --- Split Spectral type from litterature (2) 43- 53 A11 --- Spphot Photometric spectral type (this paper) 55- 59 F5.2 mag Vmag V magnitude (Vilnius system) 60 A1 --- u_Vmag uncertainty flag on Vmag 62- 65 F4.2 mag U-P U-P colour index (Vilnius system) 66 A1 --- u_U-P uncertainty flag on U-P 68- 71 F4.2 mag P-X P-X colour index (Vilnius system) 72 A1 --- u_P-X uncertainty flag on P-X 74- 77 F4.2 mag X-Y X-Y colour index (Vilnius system) 78 A1 --- u_X-Y uncertainty flag on X-Y 80- 83 F4.2 mag Y-Z Y-Z colour index (Vilnius system) 84 A1 --- u_Y-Z uncertainty flag on Y-Z 86- 89 F4.2 mag Z-V Z-V colour index (Vilnius system) 90 A1 --- u_Z-V uncertainty flag on Z-V 92- 95 F4.2 mag V-S V-S colour index (Vilnius system) 96 A1 --- u_V-S uncertainty flag on V-S 98 I1 --- n Number of independent observations
Note (1): Individual notes: 2. Photometrically peculiar. 12. Classification uncertain. 14. Visual binary, measured together. 35. Visual binary. 53. Classification uncertain. 56. Classification impossible. 83. Mild subdwarf? 84. Classification uncertain. 89. Classification impossible. 95. Classification uncertain. 96. Classification impossible. 121. Visual binary, measured together. 122. Classification impossible, binary? 123. Photometric classification gives sdF5. The star cannot be of B-type since in that case it shows too large reddening for its distance. 126. Visual binary. 128. Classification uncertain. 137. Visual binary. 144. Visual binary. 146. 43 3769, visual binary, sep=1.0", measured together. 148. 42 3916, visual binary? 165. Classification uncertain. 184. Very red, classification uncertain, probably a carbon star. 186. 42 3924, visual binary ADS 14498 AB, sep=5.4", DELTAm~=4.0, measured together. 188. 42 3925, visual binary ADS 14497 AB, sep=8.6," DELTAm~=1.0, measured together. 206. Very red, classification impossible. Note (2): Spectral types from literature are taken from HD, AGK3, Ikhsanov (1959), Jaschek (1978) and Metik (1960)
Byte-by-byte Description of file: table3 table4
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 4 A1 --- n_Seq [*] Individual note (1) 6- 12 A7 --- BD BD designation 13 A1 --- m_BD Multiplicity index on BD number 15- 20 I6 --- HD []? HD designation 22- 23 I2 h RAh Right ascension 1950 25- 26 I2 min RAm Right ascension 1950 28- 29 I2 s RAs Right ascension 1950 30 A1 --- DE- Declination sign 31- 32 I2 deg DEd Declination 1950 34- 37 F4.1 arcmin DEm Declination 1950 39- 54 A16 --- Sp Spectral type from litterature (2) 56- 67 A12 --- SpPhot Photometric spectral type 69- 73 F5.2 mag Vmag V magnitude (Vilnius system) 74 A1 --- u_Vmag uncertainty flag on Vmag 76- 79 F4.2 mag U-P U-P colour index (Vilnius system) 80 A1 --- u_U-P uncertainty flag on U-P 82- 85 F4.2 mag P-X P-X colour index (Vilnius system) 86 A1 --- u_P-X uncertainty flag on P-X 88- 91 F4.2 mag X-Y X-Y colour index (Vilnius system) 92 A1 --- u_X-Y uncertainty flag on X-Y 93- 97 F5.2 mag Y-Z Y-Z colour index (Vilnius system) 98 A1 --- u_Y-Z uncertainty flag on Y-Z 100-103 F4.2 mag Z-V Z-V colour index (Vilnius system) 104 A1 --- u_Z-V uncertainty flag on Z-V 106-109 F4.2 mag V-S V-S colour index (Vilnius system) 110 A1 --- u_V-S uncertainty flag on V-S 112 I1 --- n Number of independent observations
Note (1): Individual notes: For table3: 1. 40 4103, visual binary, ADS 13672 AB, sep=2.7", DELTAm=2.5, O9+B2. 2. 40 4115, elliptical variable V470 Cyg, SB, B2+B2. If both components are of the same absolute magnitude their apparent magnitudes are 7.66 and the distance 432 pc. 7. 40 4124, Herbig Ae/Be star. 11. 40 4136, SB, G5 III+A. 37-38. 40 4197, visual binary, BDS 10274, sep=14.0", measured separately. 49. 40 4220, V729 Cyg, eclipsing binary, sep=1.5", DELTAm~=4.0. 52. 40 4227, visual binary ADS 14000 AB, sep=9.6", DELTAm~=1.0. 69. 40 4266, visual binary ADS 14126 AB, sep=0.6", Bp (Jaschek and Egret, 1982). 108. 40 4354, visual binary ADS 14413 AB, sep=5.8", DELTAm~=4.0. 111. 40 4358, visual binary ADS 14435 AB, sep=6.0", DELTAm~=3.5. 115. 40 4372, determination of M_V uncertain, A_V~=1.3mag. 125. 40 4393, suspected variable YZ Cyg. 127. 40 4399, visual binary ADS 14605 AB, sep=6.8", DELTAm~=3.5. 152. 41 3728, visual binary. 154. 41 3731, Herbig Ae/Be star. 158. 41 3737, visual binary ADS 13832 AB, sep=7.3", DELTAm~=5.0, measured together. 165. 41 3752, visual binary ADS 13869 AB, sep=1.4", DELTAm~=0.2. 184. 41 3796, visual binary ADS 13985 AB, sep=1.5", DELTAm~=0.8. 185. 41 3799, SB. 193. 41 3815, photometrically peculiar, A_V~=2.2mag. 201. 41 3844, visual binary ADS 14130 AB, sep=0.8", DELTAm~=2.0. 215. 41 3884A, visual binary ADS 14295 AC, sep=5.6", DELTAm~=3.5. 216. 41 3884B visual binary ADS 14295 B, about 10arcsec from component A. 217. 41 3889, visual binary ADS 14306 AB, sep=0.4", DELTAm~=1.0. 218. 41 3890, visual binary ADS 14308 AB, sep=4.5", DELTAm~=3.5. 232. 41 3932 visual binary ADS 14432 AB sep=2.9", DELTAm~=2.5. 244. 41 3962, also possible classification as sdF5. 245. 41 3962a, a star ∼30arcsec from the BD 41 3962 star. 251. 41 3986, visual binary BDS 10719 BC, sep=7.3", DELTAm~=4.0 . 252. 41 3987, visual binary component BDS 10719 A. For table4: 8. 42 3684, photometric classification indicates a carbon star. 9. 42 3685, visual binary ADS 13689 AB, sep=0.9", DELTAm≃3.0. 21. 42 3718, visual binary ADS 13782 AB, sep=3.7", DELTAm≃3.0. 23. 42 3721, visual binary ADS 13786 AB, sep=1.0", DELTAm≃5.0. 25. 42 3724, visual triple component ADS 13786 C. 61. 43 3571, visual binary ADS 13736 AB, sep=5.8", DELTAm≃8.0, measured together. 62. 43 3573, visual triple ADS 13748 ABC, AB sep=0.2", DELTAm≃0.2. 63. 43 3576, visual binary component ADS 13753 A. 72. 43 3598, visual binary ADS 13845 AB, sep=0.8", DELTAm≃2.0. 84-85. 43 3627, visual binary components ADS 13933 A and B, sep≃10", measured separately. 87. 43 3634, visual binary ADS 13959 AB, sep=2.8", DELTAm≃1.5. Note (2): Spectral types from literature are taken from HD, AGK3, compilations by Jaschek et al. (1964), Jaschek (1978), Goy (1973) and from the catalogues by Wilson (1953), Ikhsanov (1959, Malmquist et al. (1960).
Byte-by-byte Description of file: table5
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5- 16 A12 --- Sp Spectral type 18- 21 F4.1 mag Mv Absolute V magnitude 22 A1 --- u_Mv uncertainty flag on Mv 24- 28 F5.2 mag Vmag V magnitude (Vilnius system) 29 A1 --- u_Vmag uncertainty flag on Vmag 31- 34 F4.2 --- Av Visual extinction 35 A1 --- u_Av uncertainty flag on Av 37- 40 I4 pc Dist Distance 41 A1 --- u_Dist uncertainty flag on Dist
Byte-by-byte Description of file: table6 table7
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Sequential number 5- 11 A7 --- BD BD designation 12 A1 --- m_BD Multiplicity index on BD number 15- 26 A12 --- Sp Spectral type 28- 31 F4.1 mag Mv Absolute V magnitude 32 A1 --- u_Mv uncertainty flag on Mv 34- 38 F5.2 mag Vmag V magnitude (Vilnius system) 39 A1 --- u_Vmag uncertainty flag on Vmag 41- 44 F4.2 --- Av Visual extinction 45 A1 --- u_Av uncertainty flag on Av 47- 50 I4 pc Dist Distance 51 A1 --- u_Dist uncertainty flag on Dist
References: Goy G., 1973, A&AS 12, 277 (1973A&AS...12..277G) Ikhsanov R.N., 1959, Izvestia Crimean Obs., 21, 229 Jaschek C. et al., 1964, Catalogue of stellar Spectra Classified in the MK system, Publ. La Plata Obs. 28, No. 2 (CDS Cat. III/18) Jaschek M., 1978, Catalogue of selected spectral types in the MK systems, Strasbourg Stellar Data Center (CDS Cat. III/42) Malmquist K.G. et al., 1960, Annaler Uppsala Obs., Bd. 4 No. 8 (1960UppAn...4h...1M) Metik L.P., 1960, Izvestia Crimean Obs., 23, 60 (1960IzKry..23...60M) Wilson R.E., 1953, General Catalogue of stellar Radial Velocities, Mt Wilson Observatory (CDS Cat. III/21) Courtesy: Vytas Straizys
(End) Patricia Bauer [CDS] 24-Nov-1994
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