CU Virginis
| Observation data Epoch J2000 Equinox J2000 | ||
|---|---|---|
| Constellation | Virgo | |
| Right ascension | 14h 12m 15.80569s[2] | |
| Declination | +02° 24′ 33.9342″[2] | |
| Apparent magnitude (V) | 4.99[3] (4.92–5.07)[4] | |
| Characteristics | ||
| Spectral type | ApSi[5] or B8.5 Vp Si[6] | |
| B−V color index | −0.118±0.006[3] | |
| Variable type | α2 CVn[4] | |
| Absolute magnitude (MV) | 0.50[3] | |
| Details Rotational velocity (v sin i)145±3 km/s | | |
| Database references | ||
| SIMBAD | data | |
CU Virginis is a singlelight years.
This is one of the best studied
designation CU Virginis (CU Vir).[4] There is some evidence that the rotation period may vary slightly over a timescale measured in decades.[14] Such changes have been observed to occur in glitches, rather than varying constantly.[13]
CU Virginis has three times the
kG.[13] The magnetic pole may be displaced by 87° from the axis of rotation, and the effective magnetic field is seen to vary over the course of a rotation.[13] The mean surface magnetic field varies over the range 1.2–3.2 kG.[15]
This star is a
relativistic (Lorentz factor of γ ≤ 2) electrons trapped in the magnetosphere". Two pulses of 100% circularly polarized radio energy are detected each rotation, which may be produced via an electron cyclotron maser process. These polarized beams are then refracted as they pass through cold plasma in the star's magnetosphere.[13]
References
- ^ "Light Curve". Hipparcos ESA. ESA. Retrieved 17 February 2022.
- ^ .
- ^ S2CID 119257644.
- ^ S2CID 125853869.
- ^ Bibcode:1999MSS...C05....0H.
- doi:10.1086/192182.
- S2CID 119323941.
- ^ S2CID 119188692, A83.
- .
- ^ "HD 124224". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 August 2018.
- S2CID 14878976.
- ^ Kaler, James B. (May 23, 2014), "CU Virginis", Stars, University of Illinois, retrieved 2018-08-18.
- ^ S2CID 118634495.
- S2CID 6193077, L5.
- .
