1995A&AS..114..253A

Query : 1995A&AS..114..253A

1995A&AS..114..253A - Astron. Astrophys., Suppl. Ser., 114, 253-257 (1995/December-1)

uvby photometry of the magnetic chemically peculiar stars HD 11187, HD 15144, 20 Eridani and HR 8933 and the early F star HD 14940.

ADELMAN S.J. and BOYCE P.W.

Abstract (from CDS):

Four College Automated Photoelectric Telescope differential Stroemgren uvby photometric observations of four magnetic chemically peculiar stars are presented. One of our comparison stars was also found to be variable. Observations of the sharp-lined Si star HD 11187 are best described as representing a constant star. HD 15144 was also constant photometrically. However, its comparison star HD 14940 is definitely variable. But we were not able to find a period. It may be a δ Scu star. Our observations of 20 Eri and the uvby values of Renson & Manfroid show definite differences in the shapes of the light curve which suggest that this star may be undergoing a precession of its rotational axis. When we refined the period by using the minima we find a value of 1.92893 days. We refined Winzer's period of the relatively large amplitude variable HR 8933 to 2.86031 days. In v and b there are definite indications of a weak submaximum within the broad minimum.

Abstract Copyright: ∼

Journal keyword(s): stars: individual HD 11187 - stars: individual HD 14940 - stars: individual HD 15144 - stars: individual * 20 Eri - stars: individual HR 8933 - stars: peculiar A - stars: variable

VizieR on-line data: <Available at CDS (J/A+AS/114/253): table1 table3 table4 table5>

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 11187 * 01 51 26.6179346232 +54 55 28.849176732   8.20 7.94     A0p 70 0
2 HD 11335 * 01 52 50.7254346336 +51 28 29.411926788 6.430 6.350 6.300     A3V 42 0
3 * g Per * 02 02 18.1084057296 +54 29 15.145135980 4.64 4.96 5.04 5.01 5.06 B8III 107 0
4 V* EP Cet gD* 02 24 09.5673209112 -16 15 15.483977928   6.96 6.67     F0IV/V 53 0
5 * rho Cet * 02 25 57.0058454304 -12 17 25.707504156   4.841 4.866     A0V 117 0
6 HD 15144 a2* 02 26 00.3479612520 -15 20 28.495226652 6.06 5.97 5.83 5.71 5.67 A3VpSrCrEu 185 0
7 * sig Cet ** 02 32 05.1877984910 -15 14 41.653561505 5.19 5.20 4.75 4.34 4.07 F5V 217 0
8 * tau05 Eri SB* 03 33 47.2758917450 -21 37 58.384116886   4.15 4.25     B9V 115 0
9 * 20 Eri a2* 03 36 17.4041095200 -17 28 01.472307996 4.61 5.10 5.23     B8/9III 181 0
10 HD 23055 * 03 41 22.3898260128 -19 35 03.800183676   6.666 6.578     A3IV/V 38 0
11 * 69 Peg a2* 23 27 40.3863467760 +25 10 02.205470820   5.913 5.979     A0IIIpHg 80 0
12 V* V354 Peg a2* 23 31 43.0297787640 +28 24 12.555107604   6.418 6.388     A0VpSrCrSiHg 76 0
13 HD 221605 PM* 23 33 28.1202033096 +24 20 32.782255584   7.10 6.91     A5 11 0

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