羅斯47
羅斯47是一顆位於獵戶座光譜型M4的變星，距離地球18.8光年。
| 觀測資料 曆元 J1950.0 | |
|---|---|
| 星座 | 獵戶座 |
| 星官 | |
| 赤經 | 05h 42m 09.26769s[1] |
| 赤緯 | +12° 29′ 21.6048″[1] |
| 視星等（V） | +11.48 - 11.55[2] |
| 特性 | |
| 演化階段 | 紅矮星 |
| 光譜分類 | M4V[3] |
| U−B 色指數 | +14.264 |
| B−V 色指數 | +13.130 |
| 變星類型 | BY Dra[2] |
| 天體測定 | |
| 徑向速度 (Rv) | 106.06±0.18[1] km/s |
| 自行 (μ) | 赤經：+1,997.342[1] mas/yr 赤緯：−1569.63[1] mas/yr |
| 視差 (π) | 172.6762 ± 0.0286[1] mas |
| 距離 | 18.888 ± 0.003 ly (5.7912 ± 0.0010 pc) |
| 絕對星等 (MV) | +12.73[4] |
| 詳細資料 | |
| 質量 | 0.218±0.005[5] M☉ |
| 半徑 | 0.238±0.009[5] R☉ |
| 表面重力 (log g) | 4.44[1] |
| 亮度 | 0.006288±0.000094[5] L☉ |
| 溫度 | 3,334+67 −63[5] K |
| 金屬量 [Fe/H] | −0.19±0.17[6] dex |
| 自轉 | 170[7] |
| 自轉速度 (v sin i) | 3.1[8] km/s |
| 年齡 | 7.1[9] Gyr |
| 其他命名 | |
| 參考資料庫 | |
| SIMBAD | 資料 |
  Ross 47 羅斯47在獵戶座的位置 | |
參考
- ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Vallenari, A.; et al. Gaia Data Release 3. Summary of the content and survey properties. Astronomy & Astrophysics. 2022. arXiv:2208.00211
. doi:10.1051/0004-6361/202243940 . 已忽略未知參數|collaboration=(幫助) Gaia DR3 record for this source at VizieR. - ^ 2.0 2.1 Samus, N. N.; et al. General Catalogue of Variable Stars. Astronomy Reports. GCVS 5.1. 2017, 61 (1): 80–88. Bibcode:2017ARep...61...80S. S2CID 125853869. doi:10.1134/S1063772917010085.
- ^ Kirkpatrick, J. Davy; Henry, Todd J.; McCarthy, Donald W. Jr. A standard stellar spectral sequence in the red/near-infrared - Classes K5 to M9. Astrophysical Journal Supplement. 1991, 77: 417. Bibcode:1991ApJS...77..417K. doi:10.1086/191611.
- ^ Anderson, E.; Francis, Ch. XHIP: An extended hipparcos compilation. Astronomy Letters. May 2012, 38 (5): 331–346. Bibcode:2012AstL...38..331A. ISSN 1063-7737. S2CID 119257644. arXiv:1108.4971 . doi:10.1134/S1063773712050015. eISSN 1562-6873.
- ^ 5.0 5.1 5.2 5.3 Pineda, J. Sebastian; Youngblood, Allison; France, Kevin. The M-dwarf Ultraviolet Spectroscopic Sample. I. Determining Stellar Parameters for Field Stars. The Astrophysical Journal. September 2021, 918 (1): 23. Bibcode:2021ApJ...918...40P. S2CID 235435757. arXiv:2106.07656 . doi:10.3847/1538-4357/ac0aea. 40.
- ^ Antoniadis-Karnavas, A.; Sousa, S. G.; Delgado-Mena, E.; Santos, N. C.; Teixeira, G. D. C.; Neves, V., ODUSSEAS: A machine learning tool to derive effective temperature and metallicity for M dwarf stars, Astronomy & Astrophysics, 2020, 636: A9, Bibcode:2020A&A...636A...9A, S2CID 211252698, arXiv:2002.09367 , doi:10.1051/0004-6361/201937194
- ^ Astudillo-Defru, N.; Delfosse, X.; Bonfils, X.; Forveille, T.; Lovis, C.; Rameau, J. Magnetic activity in the HARPS M dwarf sample. The rotation-activity relationship for very low-mass stars through R'HK. Astronomy and Astrophysics. 2017, 600: 600. Bibcode:2017A&A...600A..13A. S2CID 119237202. arXiv:1610.09007 . doi:10.1051/0004-6361/201527078.
- ^ Hojjatpanah, S.; Oshagh, M.; Figueira, P.; Santos, N. C.; Amazo-Gómez, E. M.; Sousa, S. G.; Adibekyan, V.; Akinsanmi, B.; Demangeon, O.; Faria, J.; Gomes Da Silva, J.; Meunier, N. The correlation between photometric variability and radial velocity jitter. Based on TESS and HARPS observations. Astronomy and Astrophysics. 2020, 639: 639. Bibcode:2020A&A...639A..35H. S2CID 218719951. arXiv:2005.10105 . doi:10.1051/0004-6361/202038035.
- ^ Maldonado, J.; Micela, G.; Baratella, M.; d'Orazi, V.; Affer, L.; Biazzo, K.; Lanza, A. F.; Maggio, A.; González Hernández, J. I.; Perger, M.; Pinamonti, M.; Scandariato, G.; Sozzetti, A.; Locci, D.; Di Maio, C.; Bignamini, A.; Claudi, R.; Molinari, E.; Rebolo, R.; Ribas, I.; Toledo-Padrón, B.; Covino, E.; Desidera, S.; Herrero, E.; Morales, J. C.; Suárez-Mascareño, A.; Pagano, I.; Petralia, A.; Piotto, G.; Poretti, E. HADES RV programme with HARPS-N at TNG. XII. The abundance signature of M dwarf stars with planets. Astronomy and Astrophysics. 2020, 644: A68. Bibcode:2020A&A...644A..68M. arXiv:2010.14867 . doi:10.1051/0004-6361/202039478.
- ^ Ross 47. SIMBAD. 斯特拉斯堡天文資料中心.
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