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GJ 3522 (G 41–14) is a nearby triple star system, consisting out of a short-period double-line spectroscopic binary[4] and an outer companion that was discovered with adaptive optics on the CFHT.[5] The system is 22 light-years (6.8 parsec) from Earth.[3]
 DECam image and CFHT adaptive optics image (lower left) of the resolved outer companion | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Cancer |
| Right ascension | 08h 58m 56.3208s[1] |
| Declination | +08° 28′ 26.068″[1] |
| Apparent magnitude (V) | 10.98[1] |
| Characteristics | |
| Evolutionary stage | red dwarf |
| Spectral type | M3.5V[2] |
| Astrometry | |
| Parallax (π) | 147.66 ± 1.98 mas[3] |
| Distance | 22.1 ± 0.3 ly (6.77 ± 0.09 pc) |
| Details | |
| Other designations | |
DEL 2, IRAS 08562+0840, LHS 6158, LTT 12352, 2MASS J08585633+0828259, WDS J08589+0829AB, USNO-B1.0 0984-00186842 | |
| Database references | |
| SIMBAD | data |
The inner binary orbit each other every 7.6 days. Orbiting around the inner binary the outer companion completes an orbit every 5.7 years.[6] The system has a spectral type of M3.5.[5]
The star shows flares in the optical and x-ray. It also shows activity in H-alpha and ultraviolet.[7]
See also
editReferences
edit- ^ a b c Zacharias, N.; Finch, C. T.; Girard, T. M.; Henden, A.; Bartlett, J. L.; Monet, D. G.; Zacharias, M. I. (2012). "VizieR Online Data Catalog: UCAC4 Catalogue (Zacharias+, 2012)". VizieR On-line Data Catalog: I/322A. Originally Published in: 2012yCat.1322....0Z; 2013AJ....145...44Z. 1322. Bibcode:2012yCat.1322....0Z.
- ^ Henry, Todd J.; et al. (October 1994). "The solar neighborhood, 1: Standard spectral types (K5-M8) for northern dwarfs within eight parsecs". The Astronomical Journal. 108 (4): 1437–1444. Bibcode:1994AJ....108.1437H. doi:10.1086/117167.
- ^ a b Henry, Todd J.; Jao, Wei-Chun; Subasavage, John P.; Beaulieu, Thomas D.; Ianna, Philip A.; Costa, Edgardo; Méndez, René A. (2006-12-01). "The Solar Neighborhood. XVII. Parallax Results from the CTIOPI 0.9 m Program: 20 New Members of the RECONS 10 Parsec Sample". The Astronomical Journal. 132 (6): 2360–2371. arXiv:astro-ph/0608230. Bibcode:2006AJ....132.2360H. doi:10.1086/508233. ISSN 0004-6256. S2CID 15002841.
- ^ Reid, I. Neill; Gizis, John E. (1997-06-01). "Low-Mass Binaries and the Stellar Luminosity Function". The Astronomical Journal. 113: 2246. Bibcode:1997AJ....113.2246R. doi:10.1086/118436. ISSN 0004-6256.
- ^ a b Delfosse, X.; Forveille, T.; Beuzit, J. -L.; Udry, S.; Mayor, M.; Perrier, C. (1999-04-01). "New neighbours. I. 13 new companions to nearby M dwarfs". Astronomy and Astrophysics. 344: 897–910. arXiv:astro-ph/9812008. Bibcode:1999A&A...344..897D. ISSN 0004-6361.
- ^ Hartkopf, William I.; Tokovinin, Andrei; Mason, Brian D. (2012-02-01). "Speckle Interferometry at SOAR in 2010 and 2011: Measures, Orbits, and Rectilinear Fits". The Astronomical Journal. 143 (2): 42. Bibcode:2012AJ....143...42H. doi:10.1088/0004-6256/143/2/42. ISSN 0004-6256. S2CID 119825255.
- ^ Pritchard, Joshua; Murphy, Tara; Zic, Andrew; Lynch, Christene; Heald, George; Kaplan, David L; Anderson, Craig; Banfield, Julie; Hale, Catherine; Hotan, Aidan; Lenc, Emil; Leung, James K; McConnell, David; Moss, Vanessa A; Raja, Wasim (2021-02-05). "A circular polarization survey for radio stars with the Australian SKA Pathfinder". Monthly Notices of the Royal Astronomical Society. 502 (4): 5438–5454. arXiv:2102.01801. Bibcode:2021MNRAS.502.5438P. doi:10.1093/mnras/stab299. ISSN 0035-8711.
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