J/A+AS/123/353 Mean magnetic field modulus of Ap stars (Mathys, 1997)
The mean magnetic field modulus of Ap stars
Mathys G., Hubrig S., Landstreet J.D., Lanz T., Manfroid J.
<Astron. Astrophys. Suppl. Ser. 123, 353 (1997)>
=1997A&AS..123..353M 1997A&AS..123..353M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, Ap ; Magnetic fields
Keywords: stars: chemically peculiar - stars: magnetic fields - stars: rotation
Description:
The paper reports about a systematic study of the mean magnetic field
modulus of Ap stars with magnetically resolved split lines. Tables 2a and
2b present the main properties of all such stars presently known.
The results about their mean magnetic field modulus derived in this study
are summarized in Table 3, while the individual field measurements are
given in Table 4.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2a 104 42 Main properties of the Ap stars with resolved
magnetically split lines
table2b 74 42 Main properties of the Ap stars with resolved
magnetically split lines (continued)
table3 33 40 Summary of mean magnetic field modulus
measurements
table4 33 752 Mean magnetic field modulus measurements
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Byte-by-byte Description of file: table2a
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Bytes Format Units Label Explanations
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1- 6 A6 --- HD HD/HDE number
8- 20 A13 --- Name Other identification
22- 27 F6.3 mag Vmag V magnitude
29- 38 A10 --- SpType Spectral type
40- 41 A2 --- l_Per [<≫∼ ] Limit flag on rotation period (1)
42- 45 F4.1 yr PerY ? Rotation period when it is expressed in years
47- 57 F11.6 d PerD ? Rotation period when it is expressed in days
58 A1 --- u_Per [:?] Uncertainty flag on rotation period
59- 64 F6.2 d PerD2 ? Second rotation period when uncertainty on it
66- 67 I2 --- r_Per ? Code of reference for rotation period (2)
69- 79 F11.3 d HJD0 ? Phase origin (Julian Date)
81-101 A21 --- Origin Property defining phase origin
103-104 I2 --- r_Origin ? Reference code for phase origin (2)
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Note (1): ≫ stands for "much greater than"
≳ for "greater than or approximately equal to"
Note (2): Reference codes:
1: Wolff (1975ApJ...202..127W 1975ApJ...202..127W)
2: Rice (1988A&A...199..299R 1988A&A...199..299R)
3: Borra & Landstreet (1977ApJ...212..141B 1977ApJ...212..141B)
4: Waelkens (1985A&AS...61..127W 1985A&AS...61..127W)
5: Adelman (1981A&AS...44..265A 1981A&AS...44..265A)
6: Hensberge (1993IAUCo.138..547H 1993IAUCo.138..547H)
7: Preston (1970ApJ...160.1059P 1970ApJ...160.1059P)
8: Kurtz (1989MNRAS.238..261K 1989MNRAS.238..261K)
9: Mathys (1991A&AS...89..121M 1991A&AS...89..121M)
10: Landstreet (unpublished; cited by Mathys 1991A&AS...89..121M 1991A&AS...89..121M)
11: Wolff (1969ApJ...158.1231W 1969ApJ...158.1231W)
12: Leroy (1995A&AS..114...79L 1995A&AS..114...79L)
13: Wade et al. (1996A&A...313..209W 1996A&A...313..209W)
14: Leroy et al. (1994A&A...284..174L 1994A&A...284..174L)
15: Manfroid & Mathys (1996ESOSP1198....1M 1996ESOSP1198....1M, A&AS, in press)
16: North & Adelman (1995A&AS..111...41N 1995A&AS..111...41N).
If no reference code is given, the corresponding information comes from
the present paper.
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Byte-by-byte Description of file: table2b
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Bytes Format Units Label Explanations
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1- 6 A6 --- HD HD/HDE number
8- 13 F6.3 mag b-y ? Stroemgren colour index b-y
16- 19 F4.1 kgauss av Mean value of over rotation cycle
20 A1 --- n_av [)] Note on av (1)
22- 23 A2 --- l_q [≥] Limit flag on q (2)
24- 27 F4.2 --- q Ratio of the maximum to the minimum of
28 A1 --- u_q Uncertainty flag on q
30- 34 F5.1 kgauss <Hz>min ? Observed minimum of <Hz>
35 A1 --- n_<Hz>min [)] Note on <Hz>min (3)
36 A1 --- u_<Hz>min Uncertainty flag on <Hz>min
37- 41 F5.1 kgauss <Hz>max ? Observed maximum of <Hz>
42 A1 --- n_<Hz>max [)] Note on <Hz>max (3)
43 A1 --- u_<Hz>max Uncertainty flag on <Hz>max
45- 61 A17 --- Discovery Date of observation of discovery of
magnetically resolved lines
63- 64 I2 --- r_Discovery ? Reference code for discovery date (4)
66- 71 A6 --- Remarks See Note(5)
73- 74 I2 --- r_Remarks ? Reference code for remarks (4)
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Note (1): A parenthesis indicates stars whose mean magnetic field modulus has
not been determined throughout a complete rotation cycle yet.
Note (2): For stars whose mean magnetic field modulus has not been determined
throughout a complete rotation cycle yet, a lower limit is given
(indicated by ≥, which stands for "greater than or equal to").
Note (3): A parenthesis indicates stars whose mean longitudinal magnetic field
has not been determined throughout a complete rotation cycle yet.
Note (4): Reference codes:
1: Mathys (1990A&A...232..151M 1990A&A...232..151M)
2: Mathys & Lanz (1992A&A...256..169M 1992A&A...256..169M)
3: Mathys et al. (1993IAUCo.138..300M 1993IAUCo.138..300M)
4: Preston (1971ApJ...164..309P 1971ApJ...164..309P)
5: Babel et al. (1995A&A...303L...5B 1995A&A...303L...5B)
6: Preston (1969ApJ...157..247P 1969ApJ...157..247P)
7: Preston (1970ApJ...160.1059P 1970ApJ...160.1059P)
8: Preston (1969ApJ...158.1081P 1969ApJ...158.1081P)
9: Didelon (1987Msngr..49....5D 1987Msngr..49....5D)
10: Adelman (1974ApJS...28...51A 1974ApJS...28...51A)
11: Scholz (1979AN....300..213S 1979AN....300..213S)
12: Babcock (1960ApJ...132..521B 1960ApJ...132..521B)
13: Preston & Wolff (1970ApJ...160.1071P 1970ApJ...160.1071P)
14: Bonsack (1976ApJ...209..160B 1976ApJ...209..160B)
15: North (1994, in: The 25th workshop and meeting of European
working group on CP stars, Jankovics I., Vincze I.J. (eds.).
Gothard Astrophysical Observatory of Eotvos University,
Szombathely, Hungary, p. 3)
16: Scholz & Lehmann (1988AN....309...33S 1988AN....309...33S)
17: Dworetsky (1982Obs...102..138D 1982Obs...102..138D)
18: Martinez et al. (1993MNRAS.260....9M 1993MNRAS.260....9M)
19: Kreidl (1985IBVS.2739....1K 1985IBVS.2739....1K)
20: Neubauer (1944ApJ....99..134N 1944ApJ....99..134N)
21: Kurtz (1991MNRAS.249..468K 1991MNRAS.249..468K)
22: Martinez & Kurtz (1994MNRAS.271..118M 1994MNRAS.271..118M)
23: Kurtz & Martinez (1987MNRAS.226..187K 1987MNRAS.226..187K)
24: Leeman (1964MNSSA..23....6L 1964MNSSA..23....6L)
25: Kurtz (1983MNRAS.202....1K 1983MNRAS.202....1K)
If no reference code is given, the corresponding information comes from
the present paper.
Note (5): SB = spectroscopic binary
SB2 = double-lined spectroscopic binary
roAp = rapidly oscillating Ap star
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Byte-by-byte Description of file: table3
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Bytes Format Units Label Explanations
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1- 6 A6 --- HD HD/HDE number
8- 9 I2 --- n_ Number of measurements of
11- 15 I5 gauss Av Average of all measurements of
17- 21 I5 gauss e_Av Standard deviation of all measurements
23- 27 I5 gauss rms ? Rms deviation of measurements about
least-squares fit of variations by a
simple function (see printed paper)
29- 33 I5 gauss e_ ? Estimated uncertainty of measurements
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Byte-by-byte Description of file: table4
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Bytes Format Units Label Explanations
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1- 6 A6 --- HD HD/HDE number
8- 15 F8.3 d HJD Heliocentric Julian Date - 2440000
18- 22 F5.3 --- Phase ? Rotation phase (fraction of cycle)
25- 29 I5 gauss Mean magnetic field modulus
32- 33 I2 --- Id. Code for instrumental configuration (1)
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Note (1): Instrumental configuration codes (see printed version for details):
1 ESO CAT + CES LC
2 ESO CAT + CES SC
3 ESO CAT + CES LC + CCD #38
4 ESO CAT + CES LC/F200
5 ESO CAT + CES SC/fibre
6 ESO 3.6 + CES LC/F200
7 OHP AURELIE
8 OHP ELODIE
9 KPNO coude feed + coude spectro
10 CFHT F/4 spectro
11 ESO NTT + EMMI
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Acknowledgements: Gautier Mathys
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(End) G. Mathys [ESO, Chile] Patricia Bauer [CDS] 07-Jan-1997