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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 (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:
FileName Lrecl Records Explanations
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
Byte-by-byte Description of file: table2a
Bytes Format Units Label Explanations
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 [<\gl∼ ] 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)
Note (1): \gl stands for "much greater than" ≳ for "greater than or approximately equal to"Note (2): Reference codes: Note (2): Reference codes: 1: Wolff (1975ApJ...202..127W) 2: Rice (1988A&A...199..299R) 3: Borra & Landstreet (1977ApJ...212..141B) 4: Waelkens (1985A&AS...61..127W) 5: Adelman (1981A&AS...44..265A) 6: Hensberge (1993IAUCo.138..547H) 7: Preston (1970ApJ...160.1059P) 8: Kurtz (1989MNRAS.238..261K) 9: Mathys (1991A&AS...89..121M) 10: Landstreet (unpublished; cited by Mathys 1991A&AS...89..121M) 11: Wolff (1969ApJ...158.1231W) 12: Leroy (1995A&AS..114...79L) 13: Wade et al. (1996A&A...313..209W) 14: Leroy et al. (1994A&A...284..174L) 15: Manfroid & Mathys (1996ESOSP1198....1M, A&AS, in press) 16: North & Adelman (1995A&AS..111...41N). If no reference code is given, the corresponding information comes from the present paper.
Byte-by-byte Description of file: table2b
Bytes Format Units Label Explanations
1- 6 A6 --- HD HD/HDE number 8- 13 F6.3 mag b-y ? Stroemgren colour index b-y 16- 19 F4.1 kG <H>av Mean value of <H> over rotation cycle 20 A1 --- n_<H>av [)] Note on <H>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 <H> 28 A1 --- u_q Uncertainty flag on q 30- 34 F5.1 kG <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 kG <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)
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) 2: Mathys & Lanz (1992A&A...256..169M) 3: Mathys et al. (1993IAUCo.138..300M) 4: Preston (1971ApJ...164..309P) 5: Babel et al. (1995A&A...303L...5B) 6: Preston (1969ApJ...157..247P) 7: Preston (1970ApJ...160.1059P) 8: Preston (1969ApJ...158.1081P) 9: Didelon (1987Msngr..49....5D) 10: Adelman (1974ApJS...28...51A) 11: Scholz (1979AN....300..213S) 12: Babcock (1960ApJ...132..521B) 13: Preston & Wolff (1970ApJ...160.1071P) 14: Bonsack (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) 17: Dworetsky (1982Obs...102..138D) 18: Martinez et al. (1993MNRAS.260....9M) 19: Kreidl (1985IBVS.2739....1K) 20: Neubauer (1944ApJ....99..134N) 21: Kurtz (1991MNRAS.249..468K) 22: Martinez & Kurtz (1994MNRAS.271..118M) 23: Kurtz & Martinez (1987MNRAS.226..187K) 24: Leeman (1964MNSSA..23....6L) 25: Kurtz (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
Byte-by-byte Description of file: table3
Bytes Format Units Label Explanations
1- 6 A6 --- HD HD/HDE number 8- 9 I2 --- n_<H> Number of measurements of <H> 11- 15 I5 G Av<H> Average of all measurements of <H> 17- 21 I5 G e_Av<H> Standard deviation of all <H> measurements 23- 27 I5 G rms ? Rms deviation of <H> measurements about least-squares fit of variations by a simple function (see printed paper) 29- 33 I5 G e_<H> ? Estimated uncertainty of <H> measurements
Byte-by-byte Description of file: table4
Bytes Format Units Label Explanations
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 G <H> Mean magnetic field modulus 32- 33 I2 --- Id. Code for instrumental configuration (1)
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
Acknowledgements: Gautier Mathys References: Adelman S.J., 1974, ApJS 28, 51 = 1974ApJS...28...51A Adelman S.J., 1981, A&AS 44, 265 = 1981A&AS...44..265A Babcock H.W., 1960, ApJ 132, 521 = 1960ApJ...132..521B Babel J., North P., Queloz D., 1995, A&A 303, L5 = 1995A&A...303L...5B Bonsack W.K., 1976, ApJ 209, 160 = 1976ApJ...209..160B Borra E.F., Landstreet J.D., 1977, ApJ 212, 141 = 1977ApJ...212..141B Didelon P., 1987, The Messenger No. 49, 5 = 1987Msngr..49....5D Dworetsky M.M., 1982, Observatory 102, 138 = 1982Obs...102..138D Hensberge H., 1993, Long term variability in CP stars. In Peculiar versus normal phenomena in A-type and related stars, IAU Coll. No. 138, Dworetsky M.M., Castelli F., Faraggiana R. (eds.). Astron. Soc. Pacific Conference Series vol. 44, p. 547 = 1993IAUCo.138..547H Kreidl T.J., 1985, IBVS 2739 = 1985IBVS.2739....1K Kurtz D.W., 1983, MNRAS 202, 1 = 1983MNRAS.202....1K Kurtz D.W., 1989, MNRAS 238, 261 = 1989MNRAS.238..261K Kurtz D.W., 1991, MNRAS 249, 468 = 1991MNRAS.249..468K Kurtz D.W., Martinez P., 1987, MNRAS 226, 187 = 1987MNRAS.226..187K Leeman S., 1964, Monthly Notices Astron. Soc. South Africa 23, 6 = 1964MNSSA..23....6L Leroy J.L., 1995b, A&AS 114, 79 = 1995A&AS..114...79L Leroy J.L., Bagnulo S., Landolfi M., Landi Degl'Innocenti E., 1994, A&A 284, 174 = 1994A&A...284..174L Manfroid J., Mathys G., 1996, A&AS (in press - ESO preprint No. 1198) = 1996ESOSP1198....1M Martinez P., Kurtz D.W., 1994, MNRAS 271, 118 = 1994MNRAS.271..118M Martinez P., Kurtz D.W., Meintjes P.J., 1993, MNRAS 260, 9 = 1993MNRAS.260....9M Mathys G., 1990, A&A 232, 151 = 1990A&A...232..151M Mathys G., 1991, A&AS 89, 121 = 1991A&AS...89..121M Mathys G., Landstreet J.D., Lanz T., 1993, Observations of magnetically split lines in Ap stars. In = Peculiar versus normal phenomena in A-type and related stars, IAU Coll. No. 138, Dworetsky M.M., Castelli F., Faraggiana R. (eds.). Astron. Soc. Pacific Conference Series vol. 44, p. 300 = 1993IAUCo.138..300M Mathys G., Lanz T., 1992, A&A 256, 169 = 1992A&A...256..169M Neubauer F.J., 1944, ApJ 99, 134 = 1944ApJ....99..134N North P., 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 North P., Adelman S.J., 1995, A&AS 111, 41 = 1995A&AS..111...41N Preston G.W., 1969b, ApJ 157, 247 = 1969ApJ...157..247P Preston G.W., 1969c, ApJ 158, 1081 = 1969ApJ...158.1081P Preston G.W., 1970, ApJ 160, 1059 = 1970ApJ...160.1059P Preston G.W., 1970, ApJ 160, 1059 = 1970ApJ...160.1059P Preston G.W., 1971a, ApJ 164, 309 = 1971ApJ...164..309P Preston G.W., Wolff S.C., 1970, ApJ 160, 1071 = 1970ApJ...160.1071P Rice J.B., 1988, A&A 199, 299 = 1988A&A...199..299R Scholz G., 1979, Astron. Nachr. 300, 213 = 1979AN....300..213S Scholz G., Lehmann H., 1988, Astron. Nachr. 309, 33 = 1988AN....309...33S Wade G.A., Elkin V.G., Landstreet J.D., et al., 1996a, A&A 313, 209 = 1996A&A...313..209W Waelkens C., 1985, A&AS 61, 127 = 1985A&AS...61..127W Wolff S.C., 1969, ApJ 158, 1231 = 1969ApJ...158.1231W Wolff S.C., 1975, ApJ 202, 127 = 1975ApJ...202..127W
(End) G. Mathys [ESO, Chile] Patricia Bauer [CDS] 07-Jan-1997
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