Speedy Mic
Authors: Susanne M Hoffmann, Youla Azkarrula
| Asterism Info | |
| Native | Speedy and Abbreviation "Mic" |
|---|---|
| Translation | an extraordinarily rapid rotation |
| Position (2000) | |
| Right ascension | 311.9375234 |
| Declination | -36.59465829 |
| Area | 0 sq. deg. |
| Stars | |
| Bright stars | 1 |
| Bayer/Flamsteed stars | 1 |
| Stars brighter than 3.00m | 0 |
| Brightest star | Speedy Mic (9.337m) |
| Taxonomy | |
| category of asterism | IAU-Star Name |
| IAU- constellations | Mic |
Speedy Mic is a modern star name adopted by the International Astronomical Union in the IAU-Catalog of Star Names (IAU-CSN). Its origin is modern astrophysics language (English). It is the name of the star V* BO Mic in constellation Microscopium.
Concordance, Etymology, History
The variable star V* BO Mic is a red (K-type) flare star with outbursts of high energy (X-ray, UV) and an extraordinarily rapid rotation: its radius equaling that of our Sun, it completes a rotation in 0.38 days (instead of ~25).
The nearby young star at V=9.4mag has been nicknamed "Speedy Mic" in astrophysics, because it was the fastest rotating single dwarf star known (Prot=0.38d). First appearance in Bromage+1992(1992ASPC...26...80B)[1]
There is no nebula – just a single star.
Mythology
no mythology
IAU Working Group on Star Names
The name was approved by the IAU WGSN in 2026, following a SIMBAD suggestion. The name had been popular already before the adoption; it regularly appears in paper titles: first Bromage+1992(1992ASPC...26...80B)[1], then 1993MNRAS.265..941A [2], 1997IBVS.4419....1C[3], 2001MNRAS.324..231B , 2005A&A...435..261W , 2005MNRAS.364..137B , 2006MNRAS.373.1308D , 2006MNRAS.365..530D.
Weblinks
Reference
- ↑ 1.0 1.1 Bromage, G. E., “Speedy Mic: A Young; Nearby; Extremely Fast Rotating K Star Discovered by the ROSAT/WFC EUV Survey”, in Cool Stars, Stellar Systems, and the Sun, 1992, vol. 26, p. 80.
- ↑ Anders, G. J., Jeffries, R. D., Kellett, B. J., and Coates, D. W., “Speedy MIC : a very young, rapidly rotating K star.”, Monthly Notices of the Royal Astronomical Society, vol. 265, OUP, pp. 941–945, 1993. doi:10.1093/mnras/265.4.941.
- ↑ Cutispoto, G., Kurster, M., Pagano, I., and Rodono, M., “UBV(RI)c Photometry of the Rapidly Rotating K-Type Star HD197890 = "Speedy Mic"”, Information Bulletin on Variable Stars, vol. 4419, p. 1, 1997.
