ZTF J1901+1458
| Observation data Epoch J2000 Equinox ICRS | |
|---|---|
| Constellation | Aquila[1] |
| Right ascension | 19h 01m 32.73986s[2] |
| Declination | +14° 58′ 07.1761″[2] |
| Apparent magnitude (V) | +15.72[3] |
| Characteristics | |
| Evolutionary stage | White dwarf |
| Astrometry | |
| Proper motion (μ) | RA: +95.366[2] mas/yr Dec.: +72.558[2] mas/yr |
| Parallax (π) | 24.1538±0.0489 mas[2] |
| Distance | 135.0 ± 0.3 ly (41.40 ± 0.08 pc) |
| Details[4] | |
| Mass | 1.32±0.01 (C-O core) M☉ 1.29±0.01 (O-Ne core) M☉ |
| Radius | 2,664+113 −109 km |
| Temperature | 27,445+680 −1,390 K |
| Rotation | 6.9373843±0.0000001 minutes |
| Age | 0.50±0.01 (C-O core) Gyr 0.48±0.01 (O-Ne core) Myr |
| Other designations | |
| WD 1859+148, 2MASS J19013271+1458068[3] | |
| Database references | |
| SIMBAD | data |
ZTF J1901+1458 (formally ZTF J190132.9+145808.7) is a white dwarf, about 135 light years (41.3 parsecs) away roughly in the direction of Epsilon Aquilae, discovered by the Zwicky Transient Facility circa 2021. It has around 1.3 times the mass of the Sun, nearly the largest expected mass for white dwarfs, which is defined by the Chandrasekhar limit. Its radius is about 2,664 km (1,655 mi), roughly the same as Ganymede, and it rotates once every 6.9373843 minutes. Its effective temperature is about 27,400 K (48,900 °F).[5]
The object's extreme rate of spin is hard to explain without supposing ZTF J1901+1458 to be the result of a white dwarf merger, near the upper mass limit of a stable end product.[5] Larger white dwarf mergers could be another mechanism of supernova production, which is not necessarily taken into account in how astronomers have traditionally inferred dark energy from supernova observations.
See also
References
- ↑ 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.
- 1 2 3 4 5 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.
- 1 2 "WD 1859+148". SIMBAD. Centre de données astronomiques de Strasbourg.
- ↑ Desai, Aayush; Caiazzo, Ilaria; Vennes, Stephane; Kawka, Adela; Cunningham, Tim; Kotiwale, Gauri; Cristea, Andrei A.; Raymond, John C.; Camisassa, Maria; Althaus, Leandro G.; Hermes, J. J.; Traulsen, Iris; Fuller, James; Heyl, Jeremy; van Roestel, Jan (2026-07-07). "Circumstellar interaction in the extreme white dwarf merger remnant ZTF J1901+1458. A new class of white dwarf merger remnants with X-ray emission". Astronomy & Astrophysics. doi:10.1051/0004-6361/202557035. ISSN 0004-6361.
- 1 2 Caiazzo, Ilaria; Burdge, Kevin B.; Fuller, James; Heyl, Jeremy; Kulkarni, S. R.; Prince, Thomas A.; Richer, Harvey B.; Schwab, Josiah; Andreoni, Igor; Bellm, Eric C.; Drake, Andrew; Duev, Dmitry A.; Graham, Matthew J.; Helou, George; Mahabal, Ashish A.; Masci, Frank J.; Smith, Roger; Soumagnac, Maayane T. (30 June 2021). "A highly magnetized and rapidly rotating white dwarf as small as the Moon". Nature. 595 (7865): 39–42. arXiv:2107.08458. Bibcode:2021Natur.595...39C. doi:10.1038/s41586-021-03615-y. PMID 34194021. S2CID 235698482.
