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II/134 Catalog of Magnetic Field Measurements (Didelon 1983)
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Catalog of magnetic field measurements
Didelon P.
<Astron. and Astroph. Supp. 53, 119, (1983)>
=1983A&AS...53..119D
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ADC_Keywords: Magnetic fields
Abstract:
The catalog contains references to all measurements of stellar
magnetic fields published in the literature between 1958 and 1981. The
catalog provides for each object identifications, position, magnitude,
period, extrema of the magnetic field measured, number of
measurements, method used, spectral type, bibliographic references,
and notes.
Introduction:
Users should be aware of possible differences between results obtained
with different techniques, so that the measurements given here should
not be used without detailed examination to derive, for instance
secular variations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
data.dat 132 1118 The compilation of magnetic fields
refs.dat 85 159 References
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Byte-by-byte Description of file: data.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- HD ? HD Identification
7 A1 --- m_HD *[ABI] Suffix to HD
10- 21 A12 --- Name Alternate Identification
23- 24 I2 h RAh *Right Ascension (1950.0) hours
26- 30 F5.2 min RAm Right Ascension (1950.0) minutes
32 A1 --- DE- Declination (1950.0) sign
33- 34 I2 deg DEd Declination (1950.0) degrees
36- 37 I2 arcmin DEm Declination (1950.0) arcminutes
40- 43 F4.1 mag Vmag *? Visual Magnitude
46 A1 --- n_Period *[?#>] Note on Period
47- 54 F8.2 d Period ? Magnetic or Spectroscopic Period
57- 58 A2 --- Code *[HPQUN? ] Code Regarding Field
61- 74 A14 --- Sp Spectral Type in Reference
75- 85 E11.5 10-4T Hmin ? Minimum Value of Field
86 A1 --- u_Hmin [?] Uncertainty flag on Hmin
87- 97 E11.5 10-4T Hmax ? Maximum Value of Field
99-101 I3 --- Nobs ? Number of Measurements
102-106 A5 --- Tech *Code for Measurement Technique
108-112 A5 --- r_Hmin Bibliographic Reference Number
114 A1 --- rem Note code (see Published Cat.)
117-132 A16 --- Sp2 Spectral Type in M. Jaschek <Cat. III/42>
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Note on m_HD:
A = primary component of binary
B = secondary component of binary
I = blend of two entries
Note on RAh:
Equatorial coordinates of the star for 1950.0 taken from the CDS database
or from McCook and Sion (1977, Cat. <III/129>).
Note on Vmag:
Visual Magnitude as given by the author. If not available in the reference,
it is taken from the CDS database or from McCook and Sion
(1977, Cat. <III/129>).
Note on n_Period:
> = lower limit of Period is listed
? = low accuracy value of Period
# = very low accuracy value of Period
Note on Code:
H = well established field
P = probable
Q = questionable
U = unmeasurable
N = no field detected even with sharp line or small error value
Note on Tech:
Techniques of measurement of effective field H(eff)
= Photographic technique based on Zeeman Spectrograms
(refs. 1, 5,...)
PPZ = Photoeletric polarimetry technique for detection of Zeeman
effect by polarization in line wings (refs. 39, 40, 53...)
MLP = Multiple line polarization; same technique as PPZ but the
measurement is made for several lines at the same time
(refs. 113, 148)
RZM = Reticon Zeeman measurement; same technique as the photographic
one but with a reticon detector (refs. 94, 97)
CCP = Continuum circular polarization measurements in strong field,
mainly used for white dwarfs (refs. 55-150)
Techniques of measurement of transverse field H(T)
CLP = Continuum linear polarization measurements in very strong
fields (H > 50 MG) give transverse magnetic field (ref. 133)
LPL = Linear polarization in line detects transverse magnetic field
(refs. 84, 106, 155, 156, 157). No value of the field is
calculated, but the strong dependence of the polarization
diagram on the field geometry can improve the determination of
parameters and give the orientation of the spin axis of the
star in space. See calculations for the Ap star 53 Cam in
Borra (1973ApJ...186..959B), Finn and Kemp (1974MNRAS.167..375F)
and Landi Degl'Innocenti et al. (1981ApJ...249..228L),
and tables of linear polarization for the interpretation
of observations in Landi Degl'Innocenti (1982A&A...110...25I)
and the note to reference 99 (in printed article only)
Techniques for measurement of the surface field H(S)
RZP = Resolved Zeeman patterns; high-resolution spectroscopy without
Zeeman analyzer (refs. 17, 18, 21, 23...)
LWE = Correlation between line equivalent width or line strength and
surface field (refs. 29, 33, 86)
DMB = Differential magnetic broadening or deformation of line
profiles, between sensitive and insensitive magnetic lines.
Used with a Fourier deconvolution technique this method gives
the percentage of surface covered by the field (filling factor)
(refs. 93, 114, see also Robinson 1980ApJ...239..961R and
Marcy, 1982)
WPP = Wide-band photoelectric polarimetry and computer models can
give an estimation of the surface field (ref. 99)
IML = Intensification of magnetic lines (ref. 109)
CRF = Cyclotron resonance frequency can explain some emission or
absorption features whose circular and linear polarizations are
of the same order, some strange variations of these, and can
give the surface field for the fundamental cyclotron radiation
frequency (refs. 142 and 136, 138, 143...)
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- ref Bibliographic Reference Number
5- 33 A29 --- aut Authors
46- 85 A40 --- bibcode Journal, Volume, Page, as 19-digit
bibcode when possible.
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History:
* 21-Feb-1996: the catalogue documentation was written by
Julie Anne Watko [SSDOO/ADC]
* 24-Aug-1998: reformatting at CDS (F. Ochsenbein):
- magnetic field values reformatted in file data.dat to have values
on a uniform scale,
- bibcodes added in file refs.dat.
References:
Borra E.F., 1973, Astrophys. J. 186, 959. (1973ApJ...186..959B)
Didelon P., 1983, Astron. and Astroph. Supp. 53, 119. (1983A&AS...53..119D)
Finn G.D. and Kemp J.C., 1974, Mon. Not. R. Astron. Soc. 167, 375.
(1974MNRAS.167..375F)
Landi Degl'Innocenti E., 1982, Astron. Astrophys. 110, 25.
(1982A&A...110...25I)
Landi Degl'Innocenti E. and Calamai G., 1982, Astron. Astrophys.
Suppl. Ser. 49, 677. (1982A&AS...49..677I)
Marcy G.W., 1982, IAU Symp. 102.
McCook G. P. and Sion E. M., 1977, Villanova Univ. Obs. Contrib. No. 2.
(Cat. <III/129>)
Robinson R.D. Jr., 1980, Astrophys. J. 239, 961. (1980ApJ...239..961R)
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(End) Francois Ochsenbein [CDS] 24-Aug-1998