DENIS J1048−3956
  DENIS 1048−3956 Location of DENIS J1048−3956 in the constellation Antlia | |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Antlia[1] |
| Right ascension | 10h 48m 14.574s[2] |
| Declination | −39° 56′ 06.84″[2] |
| Apparent magnitude (V) | 17.532[3] |
| Characteristics | |
| Spectral type | M8.5Ve:[4] |
| Apparent magnitude (J) | 9.5[5] |
| Astrometry | |
| Radial velocity (Rv) | −11±2[6]/> km/s |
| Proper motion (μ) | RA: −1,179.311 mas/yr[2] Dec.: −988.121 mas/yr[2] |
| Parallax (π) | 247.2156±0.0512 mas[2] |
| Distance | 13.193 ± 0.003 ly (4.0451 ± 0.0008 pc) |
| Absolute magnitude (MV) | 19.37[7] |
| Details | |
| Mass | 0.075[8] M☉ |
| Radius | 0.108[8] R☉ |
| Surface gravity (log g) | 4.3±0.3[9] cgs |
| Temperature | 2330±60[10] K |
| Age | <1[9] Gyr |
| Other designations | |
| GJ 11547,[11] 2MASS J10481463−3956062, 2MASSI J1048147−395606, 2MUCD 20385, DENIS-P J104814.9−395604, DENIS-P J104814.7−395606, DEN 1048−3956, USNO-B1.0 0500-00227632[5] | |
| Database references | |
| SIMBAD | data |
DENIS J1048−3956 is an exceptionally small, dim ultra-cool red dwarf star 13.2 light-years (4.0 parsecs) from Earth in the southern constellation of Antlia, among the stars closest to Earth. This star is very dim with an apparent magnitude of about 17,[7] and requires a telescope with a camera to be seen. It was discovered in 2000 by Xavier Delfosse (Institute of Astrophysics of the Canary Islands, now Observatoire de Grenoble) and Thierry Forveille (Canada–France–Hawaii Telescope Corporation), with the assistance of nine other astronomers.[12]
Kinematically, DENIS J1048−3956 belongs to the young thin disc.[9] In 2005 a powerful flare from this object was detected by radio astronomy.[13]
See also
[edit]References
[edit]- ^ Roman, Nancy G. (1987). "Identification of a constellation from a position". Publications of the Astronomical Society of the Pacific. 99 (617): 695. Bibcode:1987PASP...99..695R. doi:10.1086/132034. Constellation record for this object at VizieR.
- ^ a b c d Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
- ^ Costa, Edgardo; Méndez, René A.; Jao, W. -C.; Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Ianna, Philip A.; Bartlett, Jennifer (2005). "The Solar Neighborhood. XIV. Parallaxes from the Cerro Tololo Inter-American Observatory Parallax Investigation-First Results from the 1.5 m Telescope Program". The Astronomical Journal. 130 (1): 337. Bibcode:2005AJ....130..337C. doi:10.1086/430473. hdl:10533/176842.
- ^ Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Beaulieu, Thomas D.; Jao, Wei-Chun; Hambly, Nigel C. (2004). "The Solar Neighborhood. X. New Nearby Stars in the Southern Sky and Accurate Photometric Distance Estimates for Red Dwarfs". The Astronomical Journal. 128 (5): 2460. arXiv:astro-ph/0408240. Bibcode:2004AJ....128.2460H. doi:10.1086/425052.
- ^ a b "2MASSI J1048147-395606". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-06-11.
- ^ Burgasser, Adam J.; Logsdon, Sarah E.; Gagné, Jonathan; Bochanski, John J.; Faherty, Jaqueline K.; West, Andrew A.; Mamajek, Eric E.; Schmidt, Sarah J.; Cruz, Kelle L. (2015). "The Brown Dwarf Kinematics Project (BDKP). IV. Radial Velocities of 85 Late-M and L Dwarfs with MagE". The Astrophysical Journal Supplement Series. 220 (1): 18. arXiv:1507.00057. Bibcode:2015ApJS..220...18B. doi:10.1088/0067-0049/220/1/18.
- ^ a b "The One Hundred Nearest Star Systems". RECONS. Georgia State University. January 1, 2009. Retrieved 2011-12-03.
- ^ a b Lienhard, F.; Queloz, D.; Gillon, M.; Burdanov, A.; Delrez, L.; Ducrot, E.; Handley, W.; Jehin, E.; Murray, C. A.; Triaud, A H M J.; Gillen, E.; Mortier, A.; Rackham, B. V. (2020). "Global analysis of the TRAPPIST Ultra-Cool Dwarf Transit Survey". Monthly Notices of the Royal Astronomical Society. 497 (3): 3790–3808. arXiv:2007.07278. Bibcode:2020MNRAS.497.3790L. doi:10.1093/mnras/staa2054.
- ^ a b c Stelzer, B.; Alcalá, J.; Biazzo, K.; Ercolano, B.; Crespo-Chacón, I.; López-Santiago, J.; Martínez-Arnáiz, R.; Schmitt, J. H. M. M.; Rigliaco, E.; Leone, F.; Cupani, G. (2012). "The ultracool dwarf DENIS-P J104814.7-395606. Chromospheres and coronae at the low-mass end of the main-sequence". Astronomy and Astrophysics. 537. arXiv:1111.6880. Bibcode:2012A&A...537A..94S. doi:10.1051/0004-6361/201118097.
- ^ Gonzales, Eileen C.; Faherty, Jacqueline K.; Gagné, Jonathan; Teske, Johanna; McWilliam, Andrew; Cruz, Kelle (2019-12-01). "A Reanalysis of the Fundamental Parameters and Age of TRAPPIST-1". The Astrophysical Journal. 886 (2): 131. arXiv:1909.13859. Bibcode:2019ApJ...886..131G. doi:10.3847/1538-4357/ab48fc. ISSN 0004-637X.
- ^ Golovin, Alex; Reffert, Sabine; Just, Andreas; Jordan, Stefan; Vani, Akash; Jahreiß, Hartmut (November 2022). "The Fifth Catalogue of Nearby Stars (CNS5)". Astronomy & Astrophysics. 670: A19. arXiv:2211.01449. Bibcode:2023A&A...670A..19G. doi:10.1051/0004-6361/202244250. S2CID 253264922. Catalogue can be accessed here.
- ^ Delfosse, X.; Forveille, T.; et al. (February 2001). "New neighbours: II. An M9 dwarf at d ~ 4 pc, DENIS-P J104814.7-395606.1". Astronomy and Astrophysics. 366: L13 – L17. Bibcode:2001A&A...366L..13D. doi:10.1051/0004-6361:20010001.
- ^ Adam J. Burgasser & Mary E. Putman (June 10, 2005). "Quiescent Radio Emission from Southern Late-Type M Dwarfs and a Spectacular Radio Flare from the M8 Dwarf DENIS 1048−3956". The Astrophysical Journal. 626 (1): 486–497. arXiv:astro-ph/0502365. Bibcode:2005ApJ...626..486B. doi:10.1086/429788. S2CID 13286883.
Further reading
[edit]- Deacon, N. R.; Hambly, N. C. (2001). "The trigonometric parallax of DENIS-P J104814.7-395606.1". Astronomy and Astrophysics. 380: 148–150. Bibcode:2001A&A...380..148D. doi:10.1051/0004-6361:20011290.
- Jao, Wei-Chun; Henry, Todd J.; Subasavage, John P.; Brown, Misty A.; Ianna, Philip A.; Bartlett, Jennifer L.; Costa, Edgardo; Méndez, René A. (2005). "The Solar Neighborhood. XIII. Parallax Results from the CTIOPI 0.9 Meter Program: Stars with mu >= 1.0" yr-1 (MOTION Sample)". The Astronomical Journal. 129 (4): 1954–1967. arXiv:astro-ph/0502167. Bibcode:2005AJ....129.1954J. doi:10.1086/428489. S2CID 16164903.
