J/A+AS/111/41 Photometry of magnetic CP stars (North+, 1995)
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 1995A&AS..111...41N
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.
Objects:
----------------------------------------------------------
RA (2000) DE Designation(s)
----------------------------------------------------------
04 19 36.7 +21 46 25 HD 27309 = V724 Tau
12 47 02.3 +05 57 01 HD 111133 = EP Vir
14 25 55.9 +00 59 34 HD 126515 = FF Vir
22 44 07.5 +55 35 21 HD 215441 = GL Lac
----------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
gen.dat 85 60 Geneva photometry
hd27309.dat 85 89 *Photometry of HD 27309
hd111133.dat 86 286 *Photometry of HD 111133
ubvy.dat 52 312 Differential uvby photometry
--------------------------------------------------------------------------------
Note on hd27309.dat: The photometry is from literature and from us:
V(lit.), differential y magnitudes and all-sky Geneva magnitudes
and colours.
Note on hd111133.dat: 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 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)
J/A+AS/146/13 : 20 Eri, HR 1297, 12 CMa, and HD 134214 (Adelman, 2000)
J/A+A/368/225 : HR 5341, HD 142070, HR 6967 & HR 8434 (Adelman, 2001)
J/A+A/390/1023 : HR 194, HD 32966, HD 171782, and HR 7911 (Adelman+, 2002)
J/A+A/401/357 : 60 Tau, HR 1528, HR 8216, HR 8770 (Adelman+, 2003)
Byte-by-byte Description of file: hd27309.dat hd111133.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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- 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)
--------------------------------------------------------------------------------
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-. V-B and y- corrected by a constant so that
B=V-(V-B) and =y-(y-) have the same zero point as Geneva [B]
(offsets of 5.347 and 5.351 respectively)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: gen.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
Byte-by-byte Description of file: ubvy.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
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
--------------------------------------------------------------------------------
Observations characteristics
-----------------------------------------------------------------------------
File Q Nobs HJD Star Differential magnitude dm
-----------------------------------------------------------------------------
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)]
-----------------------------------------------------------------------------
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).
-----------------------------------------------------------------------------
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
(End) Patricia Bauer [CDS] 12-Dec-1994