1998A&AS..133..197A


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.07CEST23:52:35

1998A&AS..133..197A - Astron. Astrophys., Suppl. Ser., 133, 197-200 (1998/December-1)

uvby photometry of 33 Tauri, HD 50169, and HR 7786 and an assessment of FCAPT comparison stars.

ADELMAN S.J., PI C.-L.M. and RAYLE K.E.

Abstract (from CDS):

Differential Stroemgren uvby photometric observations from the Four College Automated Photoelectric Telescope are presented for the ellipsoidal variable 33 Tauri, and the magnetic Chemically Peculiar stars HD 50169 and HR 7786. We confirm that Hube's period of 2.975272 days for 33 Tau is correct. HD 50169 is a constant MCP star. HR 7786 is a large amplitude class member confirming Winzer's discovery, but its period is 8.5297 days. Its comparison star, HR 7721, a spectroscopic binary B7 V star, is variable with an amplitude of order 0.1mag, but of indeterminant period. In addition Hipparcos photometry of the comparison and check stars for early type stars whose photometry is being obtained with the FCAPT is reviewed to ascertain the stability of these stars.

Abstract Copyright:

Journal keyword(s): stars: individual: 33 Tau, HR 7786, HD 50169 - stars: chemically peculiar

VizieR on-line data: <Available at CDS (J/A+AS/133/197): table2.dat table3.dat table4.dat tablea.dat table5.dat>

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 23753 PM* 03 48 20.8170156737 +23 25 16.500644980 5.06 5.38 5.45 5.42 5.48 B8V 161 0
2 * 33 Tau SB* 03 57 03.8083954371 +23 10 31.946446661   6.059 6.038     B9.5IV 67 0
3 HD 50040 * 06 51 21.2105756702 -01 57 36.196457487   8.35 8.28     A0V 15 0
4 HD 50169 Em* 06 51 59.2282603066 -01 38 40.393959773   9.01 8.98     ApEuSrCr 90 0
5 HD 50405 * 06 53 02.8926608231 -01 53 01.041021471   9.31 9.29     A0V 13 0
6 HD 192276 SB* 20 12 03.7453830097 +47 44 13.356930183   6.791 6.903     B8III 48 0
7 * 30 Cyg V* 20 13 18.0527162012 +46 48 56.409650765   4.911 4.819     A5IIIn 64 0
8 V* V1584 Cyg a2* 20 19 56.0428032074 +46 50 14.340224975   6.385 6.478     B8IIInpSi 93 0

    Equat.    Gal    SGal    Ecl

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