FS Tauri (FS Tau) is a young multiple star system located within the Taurus molecular cloud complex approximately 450 light-years away in the constellation of Taurus.[11][1][12] FS Tauri is known for it's young age of 2.8 million years and for it's prominent bipolar outflow.[13][14]
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Taurus |
| Right ascension | 04h 22m 01.76s[1] |
| Declination | +26° 57′ 28.9″[1] |
| Apparent magnitude (V) | 14.10[2] |
| Characteristics | |
| Evolutionary stage | Pre main-sequence[3] |
| Spectral type | M3.5e+M0e[4] |
| Variable type | Orion[5] |
| Astrometry | |
| Radial velocity (Rv) | 18.940599[6] km/s |
| Proper motion (μ) | RA: 30.7±7 mas/yr[7] Dec.: −39±6.9 mas/yr[7] |
| Parallax (π) | 7.4695[6] mas |
| Distance | 450[1] ly |
| Details | |
| A | |
| Mass | 0.64[8] M☉ |
| Radius | 1.29[9] R☉ |
| Luminosity | 0.32[9] L☉ |
| Surface gravity (log g) | 3.87[9] cgs |
| Temperature | 3,841[9] K |
| Metallicity [Fe/H] | −0.57[9] dex |
| Age | 468,000[8] years |
| B | |
| Mass | 0.33[8] M☉ |
| Luminosity | 0.16[8] L☉ |
| Temperature | 3,340[8] K |
| Age | 2.5[8] Myr |
| Other designations | |
| HH 157, FS Tau, TIC 5843743, IRAS 04189+2650(E), 2MASS J04220217+2657304, WISE J042202.17+265730.4, Gaia DR3 152292187332155008[6] | |
| B: FS Tau B, IRAS 04189+2650(W), SDSS J042201.05+265735.4[10] | |
| Database references | |
| SIMBAD | A |
| B | |
_(FS-Tau).jpg)
Characteristics
editFS Tauri is a binary star system consisting of two pre-main-sequence stars.[3] The object was catalogued in 1997 during the study of T Tauri stars in star-forming regions.[15] It appeared as Haro 6-5 and HH157 in Haro and Herbig-Haro Catalog.[16] The system has been studied by Hubble Space Telescope in 1998 and it was discovered that FS Tauri A has a temperature of 3,360 K.[17]
FS Tauri imaged by Hubble Space Telescope
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References
edit- 1 2 3 4 "FS Tau (Webb Image) - NASA Science". 2026-07-02. Retrieved 2026-07-03.
- ↑ Ducati, J. R. (August 2002). "VizieR Online Data Catalog: Stellar Photometry in Johnson's 11-color system (Ducati, 2002)". VizieR Online Data Catalog. Bibcode:2002yCat.2237....0D.
- 1 2 Tamazian, Vakhtang S.; Docobo, Jose A.; White, Russel J.; Woitas, Jens (2002-10-20). "Preliminary Orbits and System Masses for Five Binary T Tauri Stars". The Astrophysical Journal. 578 (2): 925–934. doi:10.1086/342621. ISSN 0004-637X.
- ↑ Hartigan, Patrick; Kenyon, Scott J. (2003-01-20). "A Spectroscopic Survey of Subarcsecond Binaries in the Taurus-Auriga Dark Cloud with the Hubble Space Telescope". The Astrophysical Journal. 583 (1): 334–357. arXiv:astro-ph/0209608. doi:10.1086/345293. ISSN 0004-637X.
- ↑ "VSX : Detail for FS Tau". vsx.aavso.org. Retrieved 2026-07-03.
- 1 2 3 "FS Tauri". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2026-06-27.
- 1 2 Zacharias, N; Urban, S. E.; Zacharias, M. I.; Wycoff, G. L.; Hall, D. M.; Germain, M. E.; Holdenried, E. R.; Winter, L. (October 2003). "VizieR Online Data Catalog: UCAC2 Catalogue (Zacharias+ 2004)". VizieR Online Data Catalog. Bibcode:2003yCat.1289....0Z.
- 1 2 3 4 5 6 Kraus, Adam L.; Hillenbrand, Lynne A. (2009). "Unusually Wide Binaries: Are They Wide or Unusual?". The Astrophysical Journal. 703 (2): 1511. arXiv:0908.1385. Bibcode:2009ApJ...703.1511K. doi:10.1088/0004-637X/703/2/1511.
- 1 2 3 4 5 Yu, Jie; Khanna, Shourya; Themessl, Nathalie; Hekker, Saskia; Dréau, Guillaume; Gizon, Laurent; Bi, Shaolan (2023). "Revised Extinctions and Radii for 1.5 Million Stars Observed by APOGEE, GALAH, and RAVE". The Astrophysical Journal Supplement Series. 264 (2): 41. arXiv:2206.00046. Bibcode:2023ApJS..264...41Y. doi:10.3847/1538-4365/acabc8.
- ↑ "2MASS J04220069+2657324". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2026-06-27.
- ↑ "NASA's Webb Reveals Stars Sparking to Life in Cosmic Celebration - NASA Science". 2026-07-02. Retrieved 2026-07-03.
- ↑ information@eso.org. "FS Tau (Webb NIRCam image) | ESA/Webb". esawebb.org. Retrieved 2026-07-03.
- ↑ information@eso.org. "Hubble sees new star proclaiming its presence with cosmic light show". www.esahubble.org. Retrieved 2026-07-03.
- ↑ Lazaro, Enrico de (2024-03-29). "Hubble Space Telescope Images Young Multi-Star System | Sci.News". Sci.News: Breaking Science News. Retrieved 2026-07-03.
- ↑ Hirth, G. A.; Mundt, R.; Solf, J. (December 1997). "Spatial and kinematic properties of the forbidden emission line region of T Tauri stars". Astronomy and Astrophysics Supplement Series. 126 (3): 437–469. doi:10.1051/aas:1997275. ISSN 0365-0138.
- ↑ Reipurth, B.; Bertout, C., eds. (1997). "50 Years of Herbig–Haro Research. From discovery to HST". Herbig–Haro Flows and the Birth of Stars. IAU Symposium No. 182. Dordrecht: Kluwer Academic Publishers. pp. 3–18. Bibcode:1997IAUS..182....3R.
- ↑ Krist, John E.; Stapelfeldt, Karl R.; Burrows, Christopher J.; Ballester, Gilda E.; Clarke, John T.; Crisp, David; Evans, Robin W.; Gallagher III, John S.; Griffiths, Richard E.; Hester, J. Jeff; Hoessel, John G.; Holtzman, Jon A.; Mould, Jeremy R.; Scowen, Paul A.; Trauger, John T. (1998-07-10). "Hubble Space Telescope WFPC2 Imaging of FS Tauri and Haro 6-5B". The Astrophysical Journal. 501 (2): 841–852. doi:10.1086/305861. ISSN 0004-637X.