VII/218 Southern Stars embedded in nebulosity (van den Bergh+, 1975)
Catalogue of southern stars embedded in nebulosity. Van den Bergh S., Herbst W. <Astron. J. 80, 208 (1975)> =1975AJ.....80..208V
ADC_Keywords: Nebulae ; Milky Way Description: A survey of the Milky Way southward of the Palomar Sky Survey for the identification of reflection nebulae was carried out at the Cerro Tololo Inter-American Observatory in Chile. Plates in blue light were obtained at the Curtis Schmidt telescope covering a strip of plus or minus six degrees of the galactic equator. Red sensitive plates for comparison were also obtained with the same telescope covering the same area near the galactic plane. Observatory staff members and some students of the University of Toronto, Canada assisted in identifying stars embedded in nebulosity as shown by the plates. Although this catalogue roughly complements the Catalogue of Reflection Nebulae of van den Berg (1966AJ.....71..990V, Cat. VII/21), the region here surveyed is more narrowly confined to the galactic equator. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 71 136 The Catalogue (Table I of publication) notes.dat 80 47 Full notes of publication for Table I
See also: VII/21 : Catalogue of Reflection Nebulae (Van den Bergh, 1966) Nomenclature Notes: Objects of this catalogue are frequently designated in the literature with the acronym VDBH. Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
1- 2 I2 --- BHe [1,93] BHe id number 3- 7 A5 --- m_BHe BHe components as (a,b,c) 12- 19 A8 --- IDs Alternate designation 22- 23 I2 h RAh Right Ascension B1950 (hours) 25- 28 F4.1 min RAm Right Ascension B1950 (minutes) 31 A1 --- DE- Declination B1950 (sign) 32- 33 I2 deg DEd Declination B1950 (degrees) 35- 36 I2 arcmin DEm Declination B1950 (minutes) 39- 42 A4 --- Type Type of nebula, see Note (1) 43 A1 --- u_Type Uncertainty flag (:) on Type 45- 47 A3 --- Br Brightness from blue plates, see Note (2) 48 A1 --- u_Br Uncertainty flag (:) on Br 50- 51 A2 --- Color Coded reference to colors, see Note (3) 52 A1 --- u_Color Uncertainty flag (:) on Color 54- 56 A3 --- Abs Absorption in field of nebula, see Note (4) 57 A1 --- u_Abs Uncertainty flag (:) on Absorb 60- 62 F3.1 arcmin BDiam ? Maximum diameter observed on blue plates 63 A1 --- u_BDiam Uncertainty flag (:) on BDiaMax 66- 68 F3.1 arcmin RDiam ? Maximum diameter observed on red plates 69 A1 --- u_RDiam Uncertainty flag (:) on RDiaMax 71 A1 --- Rem [*] Note flag (*) detailed in file "notes.dat"
Note (1): Types given are I, II, I-II, or pec. These are defined as follows: I: Nebulae in which the illuminating star is embedded in the nebulosity. II: The illuminating star is situated outside the nebula. I-II: This combination type was undefined in the original publication. pec: Peculiar. Note (2): Surface brightness is coded as follows: 'vBr'=very bright; 'Br'=bright; 'M'=moderate; 'F'=faint; 'vF'=very faint. Note (3): Color types are coded: 'vB'=very blue; 'B'=blue; 'mB'=moderately blue; 'I'=intermediate; 'mR'=moderately red; 'R'=red; 'vR'=very red. Note (4): Absorption is coded: 'Str'=strong; 'Mod'=moderate; 'Wk'=weak.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 2 I2 --- BHe BHe id number 3- 7 A5 --- m_BHe BHe components as (a,b,c) 10- 79 A70 --- Text Text of note 80 A1 --- Flag '*' if note continues on next line
Note to the electronic version: (by Raymond Bruton, and Patrick Chevalley, ): The intended purpose of the electronic version of the BHe catalogue is for use with the computer plotting of star charts. Astronomical software, (Cartes du Ciel-Sky Charts) developed by the second editor (Patrick Chevalley) was used to test dataset validity (see http://www.astrosurf.org/astropc). Any errors in the dataset should be reported to the editors. Any gross error in the original should likewise be reported. As a check on errors the work of Herbst (1975AJ.....80..212H) was consulted. When used with the northern dataset of van den Berg (1966AJ.....71..990V, see Cat. VII/21) the work of Racine (1968AJ.....73..233R) was likewise consulted as a check for possible errors and misidentifications. The indiscriminate comparison of the present work with the work of van den Berg (1966AJ.....71..990V) is not recommended. When using the northern and southern datasets for reflection nebulae together for plots of surface distribution the differences are clearly evident. This was also indicated in the original publication of van den Berg and Herbst (1975AJ.....80..212H). For plots of the southern nebulae further from the galactic plane than the present work a remedy was sought and in part found. The catalogue of southern dark clouds of Hartley et al. (1986A&AS...63...27HC, see Cat. VII/191) was used because of prolific notes about association with bright nebulae. Although this combination was useful the editors also used the catalogue of Herbig and Bell (1988, see Cat. V/73A for cross checks on position errors. The editors were motivated to produce the present dataset in part due to the popularization of some BHe objects by Slotegraaf (1998). Mr. Slotegraaf also encouraged the production of the present dataset in private correspondence. This work would not have been possible without the use of the NASA Astrophysics Data System maintained at Harvard College, USA., for the obtaining of the original paper of van den Berg and Herbst (1975AJ.....80..212H), and closely related papers. The American Astronomical Society, and the University Press, Chicago, USA, are thanked for making copyrighted papers from the Astronomical Journal available to the NASA Astrophysics Data System and indirectly to the editors. References: Hartley M., Manchester R.N., Tritton S.B., Gross W.M. 1986, Astron. Astrophy. Supp. Ser. 63, 27 (1986A&AS...63...27H), Cat. VII/191 Herbig, G.H., Bell, K.R., 1988, Lick Observatory Bulletin No. 1111 (Cat. V/73>) Herbst, W. 1975, Astron. J. 80, 212 (1975AJ.....80..212H) Slotegraaf, A. 1998 "Deepsky Observers Companion" (http://members.xoom.com/auke/index.html) van den Berg S., 1966, Astron. J. 71, 990 (1966AJ.....71..990V) (Cat. VII/21) van den Berg S., Herbst W., 1975, Astron. J. 80, 208 (1975AJ.....80..208V)
(End) Raymond Bruton [Fort Worth], Patrick Chevalley [Geneva] 26-May-2000
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