J/ApJS/2/389 Observations of O and B stars (Hiltner, 1956)
Photometric, Polarization, and Spectrographic Observations of O and B Stars.
Hiltner W.A.
<Astrophys. J. Suppl. Ser. 2, 389 (1956)>
=1956ApJS....2..389H 1956ApJS....2..389H
ADC_Keywords: Stars, OB ; Polarization ; MK spectral classification ;
Photometry, UBV ; Extinction
Description:
This catalog of O and B stars contains magnitudes, colors, spectral
types and polarization for 1259 stars. In addition to observations,
the catalogue contains the derived absorption and distance modulus.
A photoelectric photometer attached to the 82-inch (2m) reflector of
the McDonald Observatory was used for the polarization observations.
The photometric UBV observations were made over a period of 4 years
with the 13-inch (33cm) and the 82-inch telescopes at McDonald. The
spectroscopic classification was made with a new camera installed on
the Cassegrain spectrograph, with a dispersion of 86Å/mm at Hδ.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 139 1259 The catalog of O and B stars
notes.dat 97 192 Remarks to stars in table5
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Hilt [1/1259]+ Running number
5 A1 --- f_Hilt [*] Flag indicating a note (see notes.dat)
7- 12 I6 --- HD ? HD or Extension number
13- 15 A3 --- m_HD Multiplicity on HD
17- 25 A9 --- DM BD or CD (δ←22) designation
26 A1 --- f_DM [*] Unexplained flag on DM
28- 29 I2 h RAh Right Ascension B1900 (hours)
31- 34 F4.1 min RAm Right Ascension B1900 (minutes)
36 A1 --- DE- Declination B1900 (sign)
37- 38 I2 deg DEd Declination B1900 (degrees)
40- 41 I2 arcmin DEm Declination B1900 (minutes)
43- 47 F5.1 deg Glon Galactic longitude
49- 53 F5.1 deg Glat Galactic latitude
55- 59 F5.1 deg phi [0/360] Galactic parallactic angle φ
61 A1 --- l_p [<] Limit flag (<) on polarization
62- 66 F5.3 mag p [0/0.22] Amount of polarization in magnitudes (1)
68- 70 I3 deg t [0/180]? Position angle of the electric vector
in equatorial coordinates θ
72- 74 I3 deg t' [0/180]? Position angle of the electric vector
in galactic frame θ'=θ+φ
76- 90 A15 --- SpT MK spectral type (from the literature,
classified by W.W. Morgan, or by the author)
91 A1 --- f_SpT [*] Note on SpT (see notes.dat)
93- 97 F5.2 mag Vmag Johnson V-band magnitude
98 A1 --- u_Vmag [:*] uncertain or variable magnitude (see notes)
100-104 F5.2 mag B-V ? Johnson (B-V) color
106-110 F5.2 mag U-B ? Johnson (U-B) color
112-116 F5.2 mag Av [0/11.1]? Interstellar absorption Av=3E(B-V) (2)
118-122 F5.2 mag m ? V-band magnitude corrected for interstellar
absorption (=Vmag-Av)
124-127 F4.1 mag M [-7/2]? Absolute magnitude
129-132 F4.1 mag m-M [4.8/14.6]? Distance modulus
134-138 F5.3 --- p/Av ? interstellar polarization to absorption ratio
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Note (1): the linear polarization in percent (%) can be computed by scaling
the listed polarization in magnitudes by 46.05 (=20ln(10)).
Note (2): instrinsic colors (B-V)0 used:
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O5 = -0.32 B0.5 = -0.28 B9 = -0.06
O6 = -0.32 B1 = -0.26 B9.5 = -0.03
O7 = -0.32 B2 = -0.24 A0 = 0.00
O8 = -0.31 B3 = -0.20 A1 = +0.03
O9 = -0.31 B5 = -0.16 A2 = +0.06
O9.5 = -0.30 B6 = -0.14 A3 = +0.09
B0 = -0.30 B7 = -0.12 A5 = +0.15
B8 = -0.09
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Byte-by-byte Description of file: notes.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- Hilt [1/1259] Running number
6- 97 A92 --- Text Text of note (1)
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Note (1): References are:
Ref.1 = Gonzalez G. & Gonzalez G. 1952, Bol. Oos. Ton. y Tac., No.5, pp.1-7
(1952BOTT....1e...1G 1952BOTT....1e...1G, <[GG52] NN> in Simbad)
Ref.2 = Gonzalez G. & Gonzalez G. 1953, Bol. Oos. Ton. y Tac, No.7, pp. 3-10
(1953BOTT....1g...3G 1953BOTT....1g...3G, <[GG53] NN> in Simbad)
Ref.3 = Nassau J.J. & Harris Daniel III, 1952, Ap.J. 115, 459-474. Table I
(1952ApJ...115..459N 1952ApJ...115..459N, <[NH52] NN> in Simbad)
Ref.4 = Munch L.. 1953, Bol. Obs. Ton. y Tac., No.7, pp. 23-32
(1953BOTT....1g..23M 1953BOTT....1g..23M, <[M53] NN> in Simbad)
Ref.5 = Nassau J.J. & Morgan W.W. 1951, Ap.J. 113, 149
(1951ApJ...113..141N 1951ApJ...113..141N, <[NM51] NN> in Simbad)
Ref.6 = Gonzales G. & Gonzalez G. 1954, Bol. Obs. Ton. y Tac., No.9, pp. 26-27
(1954BOTT....1i..21G 1954BOTT....1i..21G, <[GG54] NN> in Simbad)
Ref.7 = Morgan W.W., Gonzalez G. & Gonzalez G. 1953, Ap.J. 118, 345-346
(1953ApJ...118..345M 1953ApJ...118..345M, <[MGG53] NN> in Simbad)
Ref.8 = Munch L.. 1954, Bol. Oba. Ton. y Tac., No. 10, pp. 28-40
(1954BOTT....1j..28M 1954BOTT....1j..28M, <[M54] NN> in Simbad)
Ref.9 = Hiltner W.A. Table 3 of this publication (T3)
Ref.10 = Hiltner W.A. & Iriarte B. 1955, Ap.J. 121, 556
(1955ApJ...121..556H 1955ApJ...121..556H, <[HI55] NN> in Simbad)
Ref.11 = Munch L. & Morgan, W.W. 1953, Ap.J. 118, 161
(1953ApJ...118..161M 1953ApJ...118..161M, <Schulte NN> in Simbad)
Ref.12 = Morgan W.W., Johnson H.L., Roman Nncy G., 1954, PASP 66, 85
(1954PASP...66...85M 1954PASP...66...85M, <Schulte NN> in Simbad)
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History:
* 17-Mar-2016: Prepared via OCR at ADS and CDS.
Corrections and remarks added at CDS:
#33: RA is in error by 1min, should be 00:24.2+62:31, as computed from
the 1855 position given in table 3 of the paper.
#123: Dec. is 10' off (should be +62:37)
#208: Dec. is 10' off (should be +61:34)
#312: Dec. is 2° off (should be +59:24)
#366: RA is 1min too large (should be 02:47.3)
#584: m=6.97 in printed table, corrected into 4.97,
and distance modulus corrected from printed 12.1 into 10.1
#605: Dec is 9° off, corrected from printed +10:30 into 01:30
#621: Right ascension "7 05.9" in printed table, corrected into "7 03.9"
#630: m=9.07 in printed table, corrected into 8.07,
and distance modulus corrected from printed 13.8 into 12.8
#636: RA is 0.5min off (should be 07:40.5)
#917: Vmag=3.39 in printed table, corrected into 9.90 (=m+Av)
#993: Declination "+41 68" in printed table, corrected into "+41 05"
#1060: inconsistency in position angles θ=90, θ'=47
should be either θ=09°, or θ'=128
#1087: Declination 1° off, corrected from printed +53:28 into +52:28
#1098: Declination 4° off, corrected from printed +53:47 into +57:47
(the error is in Ref.1=1952BOTT....1e...1G 1952BOTT....1e...1G, Star#50 which has
δ1855=+53:34 instead of +57:34 from the finding chart)
#1103: Dec is 4' off (should be +53:09)
#1114: m=0.90 corrected into 6.08 (=Vmag-Av)
#1118: RA is 1min error (should be 22:19.5)
#1199: inconsistency in position angles θ=53, θ'=84
should be either θ=63, or θ'=74
#1250: distance modulus 8.8 in printed table corrected into 4.8
Acknowledgements:
It is a pleasure to thank Edwin Henneken (NASA/ADS) for his help
in the OCR procedure.
(End) Francois Ochsenbein [CDS] 24-Mar-2016