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J/A+AS/111/41 Photometry of magnetic CP stars (North+, 1995)
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Stroemgren and Geneva photometry of the magnetic CP stars 56 Tauri, HD 111133,
HD 126515 and HD 215441.
North P., Adelman S.J.
<Astron. Astrophys. Suppl. Ser. 111, 41 (1995)>
=1995A&AS..111...41N (SIMBAD/NED Reference)
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ADC_Keywords: Stars, Ap; Stars, peculiar; Photometry, uvby; Photometry, Geneva
Keywords: stars: individual: HD 27309, HD 111133, HD 126515, HD 215441 -
stars: chemically peculiar - stars: rotation
Description:
Photometry in the Stroemgren and Geneva systems is used to improve the
ephemerides of the magnetic CP stars 56 Tau, HD 111133, HD 126515 and
HD 215441.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gen 85 60 Geneva photometry
hd27309 85 89 *Photometry of HD 27309
hd111133 86 286 *Photometry of HD 111133
ubvy 52 312 Differential uvby photometry
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Note on hd27309: The photometry is from literature and from us: V (lit.),
differential y magnitudes and all-sky Geneva magnitudes and colours.
Note on hd111133: The photometry is from Wolff & Wolff (1972) and from
us (differential U,B,V and v,b,y magnitudes, and all-sky Geneva
magnitudes and colours). The UBV and <vb> magnitudes are corrected
for offsets as described in the paper.
See also:
J/A+A/324/137 : Eclipsing binaries with candidate CP stars (North+ 1997)
J/A+AS/103/1 : 63 And, HD 192913, HR 8240 & 108 Aqr (Adelman+ 1994)
J/A+AS/106/333 : Alpha And, HD 184905, HR 8216 & HR 8434 (Adelman+ 1994)
J/A+AS/114/253 : HD 11187, HD 14940, HD 15144, 20 Eri, HR 8933
(Adelman+ 1995)
J/PASP/109/9 : HR 1643, Theta Aur, 49 Cam, and HR 3724 (Adelman 1997)
J/A+AS/122/249 : HD32633, 25 Sex, HR 7224, and HD 200311 (Adelman, 1997)
J/A+A/329/579 : uvby photometry of theta CrB (Fabregat+ 1998)
J/A+AS/123/445 : uvby photometry of metallic + Hg-Mn stars (Adelman 1997)
J/A+AS/125/65 : HD 37776, HR 2258, HR 6958 & 108 Aqu (Adelman, 1997)
J/A+AS/125/497 : Theta Vir and 109 Vir uvby photometry (Adelman 1997)
J/A+AS/128/245 : AR Aur, 3 Hya, 49 Cnc & BX Boo (Adelman 1997)
J/A+A/333/952 : BVRI photometry of HR 1105
J/A+AS/134/53 : HD 15980, HR 1094, 33 Gem, and HD 115708 (Adelman 1998)
J/A+AS/136/111 : HD 35298, 19 Lyr, HD 192678 and HR 8216 (Adelman+ 1999)
J/A+AS/136/379 : 45 Leo, HR 4330, 49 Her and HR 6718 (Adelman+ 1999)
Byte-by-byte Description of file: hd27309 hd111133
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 21 F11.3 d HJD Heliocentric julian day
25 I1 --- Q Photometric Q weight (Rufener 1988).
Only valid for Geneva photometry
29- 33 F5.3 mag [V] Magnitude in the visible (1)
37 I1 --- P Photometric P weight (Rufener 1988).
Only valid for Geneva photometry
41- 45 F5.3 mag [U-B] Geneva [U-B] or U-B(Johnson) index (2)
49- 53 F5.3 mag [V-B] Geneva [V-B] or V-B(Johnson) or y-<vb> index (3)
57- 61 F5.3 mag [B1-B] Geneva [B1-B] index, (0 for other photometries)
65- 69 F5.3 mag [B2-B] Geneva [B2-B] index, (0 for other photometries)
73- 77 F5.3 mag [V1-B] Geneva [V1-B] index, (0 for other photometries)
81- 85 F5.3 mag [G-B] Geneva [G-B] index, (0 for other photometries)
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Note (1): The magnitude is Geneva [V], differential Stromgren y (dy+6.327 for
the dy data of Wolff & Wolff 1972, and dy+6.319 for our dy data)
or Johnson V (dV+6.321 for our dV data).
Note (2): The index is Geneva [U-B] index, or Johnson's differential U-B index
(zero for uvby photometry). U-B corrected by a constant so that
U=V-(V-B)+(U-B) has the same zero point as Geneva [U]
(offset of 6.881)
Note (3): The index is Geneva [V-B] index, or differential Johnson's V-B index
or y-<vb>. V-B and y-<vb> corrected by a constant so that B=V-(V-B)
and <vb>=y-(y-<vb>) have the same zero point as Geneva [B]
(offsets of 5.347 and 5.351 respectively)
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Byte-by-byte Description of file: gen
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 21 F11.3 d HJD Heliocentric julian day
25 I1 --- Q photometric Q weight (Rufener 1988).
29- 33 F5.3 mag [V] Magnitude in the visible: Geneva [V],
37 I1 --- P photometric P weight (Rufener 1988).
41- 45 F5.3 mag [U-B] Geneva [U-B] index
49- 53 F5.3 mag [V-B] Geneva [V-B] index
57- 61 F5.3 mag [B1-B] Geneva [B1-B] index
65- 69 F5.3 mag [B2-B] Geneva [B2-B] index
73- 77 F5.3 mag [V1-B] Geneva [V1-B] index
81- 85 F5.3 mag [G-B] Geneva [G-B] index
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Byte-by-byte Description of file: ubvy
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name
11- 21 F11.3 d HJD Heliocentric julian day of the observation
24- 29 F6.3 mag umag Differential u magnitude
31- 36 F6.3 mag vmag Differential v magnitude
38- 43 F6.3 mag bmag Differential b magnitude
45- 50 F6.3 mag ymag Differential y magnitude
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Observations characteristics
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File Q Nobs HJD Star Differential magnitude dm
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h111 2 286 2440630.000 HD 111133 ---
h27 2 89 2441313.000 HD 27309 ---
gen 2 35 2441039.000 HD 126515 ---
gen 2 25 2439350.000 HD 215441 ---
ubvy - 81 2448329.000 HD 111133 m(HD111133)-m(HD109860)
ubvy - 124 2448308.000 HD 126515 m(HD126515)-0.5[m(HR5418)+m(HR5368)]
ubvy - 73 2448411.000 HD 215441 m(HD15441)-m(HD215501)
ubvy - 34 2448532.000 HD 27309 m(HD27309)-0.5[m(HR1331)+m(HR1399)]
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Q : minimum Q weight (Rufener 1988) to consider the Geneva observation
in the period determination. Dummy value of 3 attributed to our
y measurements or the V ones from the literature.
Nobs : Total number of measurements
HJD : Heliocentric Julian Date from which the data are taken into account
(e.g. for period search).
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References:
Rufener F., 1988, "Catalogue of stars measured in the Geneva Observatory
Photometric system", 4th Edition, Geneva Observatory
(Catalogue II/169)
Wolff S.C., Wolff R.J., 1972, ApJ 176, 433
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(End) Patricia Bauer [CDS] 12-Dec-1994