Mal:Stjerneinfo/Ypsilon Andromedae
| Upsilon Andromedae | |||
|---|---|---|---|
[[Fil: |frameless|]]A conception of Upsilon Andromedae A, here showing 2 out of 4 known planets. | |||
| Observasjonsdata Epoke J2000.0 | |||
| Rektascensjon | 01t 36m 47.84216s[1] | ||
| Deklinasjon | +41° 24′ 19.6443″[1] | ||
| Karakteristikk | |||
| Spektralklasse | F8 V[2] + M4.5 V[3] | ||
| Fargeindeks U–B | 0.06 | ||
| Fargeindeks B–V | 0.54 | ||
| Fargeindeks V–R | 0.30[4] | ||
| Fargeindeks R–I | 0.30[4] | ||
| Astrometri | |||
| Radialhastighet (Rv) | –28.9 ± 0.9[2] km/s | ||
| Egenbevegelse (μ) | RA: –173.33 ± 0.20[1] mas/år DEK: –381.80 ± 0.13[1] mas/år | ||
| Parallakse (π) | 73.71 ± 0.10 mas[4] | ||
| Avstand | 44,25 ± 0,06 ly (13,57 ± 0,02 pc) | ||
| Absolutt størrelsesklasse (MV) | 3.44 ± 0.02[5] | ||
| Detaljer | |||
| Masse | 1.27 ± 0.06[5] M☉ | ||
| Radius | 1.480 ± 0.087[6] R☉ | ||
| Overflategravitasjon (log g) | 4.0 ± 0.1[5] | ||
| Luminositet | 3.57[7] L☉ | ||
| Temperatur | 6,074 ± 13.1[8] K | ||
| Vinkelhastighet | 7.3 ± 0.04 days[9] | ||
| Andre betegnelser | |||
| 50 Andromedae, BD+40 332, CCDM 01367+4125, FK5 1045, GC 1948, GCTP 331.00, Gl 61, HD 9826, HIP 7513, HR 458, LTT 10561, SAO 37362, WDS 01368+4124A. | |||
| Referansedatabaser | |||
| SIMBAD | «data». | ||
| EPE | «data». | ||
| Datakilder | |||
| Hipparcos-katalogen, CCDM (2002), Bright Star Catalogue (5. rev. utg.) | |||
Referanser[rediger kilde]
- ^ a b c d van Leeuwen, F. (November 2007), «Validation of the new Hipparcos reduction», Astronomy and Astrophysics 474 (2): 653–664, , .
- ^ a b «NLTT 5367 -- High proper-motion Star». SIMBAD Astronomical Object Database. Centre de Données astronomiques de Strasbourg. Besøkt 20. mai 2009.
- ^ Lowrance, Patrick J.; Kirkpatrick, J. Davy; Beichman, Charles A. (2002). «A Distant Stellar Companion in the υ Andromedae System». The Astrophysical Journal Letters. 572 (1): L79–L81. Bibcode:2002ApJ...572L..79L. arXiv:astro-ph/0205277
. doi:10.1086/341554.
- ^ a b c McArthur, Barbara E.; m.fl. (2010). «New Observational Constraints on the υ Andromedae System with Data from the Hubble Space Telescope and Hobby Eberly Telescope» (PDF). Bibcode:2010ApJ...715.1203M. doi:10.1088/0004-637X/715/2/1203.
- ^ a b c Fuhrmann, Klaus; Pfeiffer, Michael J.; Bernkopf, Jan (August 1998), «F- and G-type stars with planetary companions: upsilon Andromedae, rho (1) Cancri, tau Bootis, 16 Cygni and rho Coronae Borealis», Astronomy and Astrophysics 336: 942–952, .
- ^ van Belle, Gerard T.; von Braun, Kaspar (2009). «Directly Determined Linear Radii and Effective Temperatures of Exoplanet Host Stars». The Astrophysical Journal. 694 (2): 1085–1098. Bibcode:2009ApJ...694.1085V. arXiv:0901.1206 . doi:10.1088/0004-637X/694/2/1085.
- ^ Takeda, Yoichi (April 2007), «Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database», Publications of the Astronomical Society of Japan 59 (2): 335–356, .
- ^ Kovtyukh, V. V.; m.fl. (2003). «High precision effective temperatures for 181 F-K dwarfs from line-depth ratios». Astronomy and Astrophysics. 411 (3): 559–564. Bibcode:2003A&A...411..559K. arXiv:astro-ph/0308429 . doi:10.1051/0004-6361:20031378.
- ^ Simpson, E. K. m. fl.. (November 2010), «Rotation periods of exoplanet host stars», Monthly Notices of the Royal Astronomical Society 408 (3): 1666–1679, , .
- ^ Barry, Don C.; Cromwell, Richard H.; Hege, E. Keith (April 1987), «Chromospheric activity and ages of solar-type stars», Astrophysical Journal, Part 1 315: 264–272, , .
