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| Query : 1997A&A...323..881M |
1997A&A...323..881M - Astronomy and Astrophysics, volume 323881-885 (1997/7-3)
The variations of the Bp star HD 137509.
MATHYS G. and LANZ T.
Abstract (from CDS):
A refined value P=(4.4916±0.0002) d is derived for the rotation period of the Bp star HD 137509, from the simultaneous consideration of photometric data recorded in the Geneva system and of measurements of the mean longitudinal magnetic field and of the crossover. The variations of the magnetic field (one of the most intense fields known in an Ap or Bp star) show the signature of a strong quadrupolar component. This remarkable property is reflected in the brightness and line equivalent width variations.
Abstract Copyright: ∼
Journal keyword(s): stars: chemically peculiar - stars: magnetic fields - stars: rotation - stars: individual: HD 137509
VizieR on-line data: <Available at CDS (J/A+A/323/881): table1>
Simbad objects: 3
| Number of rows : 3 |
| 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 | V* V901 Ori | Ro* | 05 40 56.3704617744 | -01 30 25.856677224 | 5.96 | 6.82 | 6.96 | B2V | 354 | 2 | ||
| 2 | V* HR Lup | a2* | 15 08 12.1238757000 | -40 35 02.155417224 | 5.25 | 5.65 | 5.79 | B8IVSi | 186 | 1 | ||
| 3 | V* NN Aps | a2* | 15 31 27.1154643312 | -71 03 43.664769144 | 6.76 | 6.87 | Ap(SiCrFe) | 98 | 0 |
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