Gaia BH3: Difference between revisions
Concise language Tags: Visual edit Mobile edit Mobile web edit |
Concise language Tags: Visual edit Mobile edit Mobile web edit |
||
Line 64: | Line 64: | ||
'''Gaia BH3''' (Gaia DR3 4318465066420528000) is a [[binary system]] consisting of a metal-poor [[K-type main-sequence star|K2]] star and a [[stellar-mass black hole]]. Gaia BH3 is located 1839 [[light year]]s away ({{val|0.5906|0.0058|ul=kpc}} away) in the constellation of [[Aquila (constellation)|Aquila]], making it {{as of|2024|lc=y}} the [[List of nearest known black holes|heaviest known]] black hole system second-closest to Earth. Gaia BH3 is the third black hole discovered from [[Gaia DR3]] astrometric data.<ref name="Panuzzo et al"/> |
'''Gaia BH3''' (Gaia DR3 4318465066420528000) is a [[binary system]] consisting of a metal-poor [[K-type main-sequence star|K2]] star and a [[stellar-mass black hole]]. Gaia BH3 is located 1839 [[light year]]s away ({{val|0.5906|0.0058|ul=kpc}} away) in the constellation of [[Aquila (constellation)|Aquila]], making it {{as of|2024|lc=y}} the [[List of nearest known black holes|heaviest known]] black hole system second-closest to Earth. Gaia BH3 is the third black hole discovered from [[Gaia DR3]] astrometric data.<ref name="Panuzzo et al"/> |
||
The black hole and star orbit the system [[barycentre]] every 11.6 years, with an orbital distance of between {{Val|4.5|-|29|u=AU}}.<ref>{{Cite news |last=Dunham |first=Will |date=April 16, 2024 |title=Astronomers detect Milky Way's second-largest known black hole |url=https://www.reuters.com/science/astronomers-detect-milky-ways-second-largest-known-black-hole-2024-04-16/ |work=Reuters}}</ref> The black hole's mass is |
The black hole and star orbit the system [[barycentre]] every 11.6 years, with an orbital distance of between {{Val|4.5|-|29|u=AU}}.<ref>{{Cite news |last=Dunham |first=Will |date=April 16, 2024 |title=Astronomers detect Milky Way's second-largest known black hole |url=https://www.reuters.com/science/astronomers-detect-milky-ways-second-largest-known-black-hole-2024-04-16/ |work=Reuters}}</ref> The black hole's mass is {{Solar mass|32.70|link=y}}, the heaviest known stellar black hole in the Milky Way. |
||
== Discovery == |
== Discovery == |
Revision as of 04:49, 17 April 2024
Observation data Epoch J2016.0 Equinox J2016.0 | |
---|---|
Constellation | Aquila |
Right ascension | 19h 39m 18.72s[1] |
Declination | +14° 55′ 54.2″[1] |
Characteristics | |
K2 star | |
Evolutionary stage | K2 |
Black hole | |
Evolutionary stage | Stellar black hole |
Astrometry | |
Orbit[2] | |
Period (P) | 11.6 yr |
Details[2] | |
K2 | |
Mass | 0.76±0.05 M☉ |
Black hole | |
Mass | 32.70±0.82 M☉ |
Other designations | |
Database references |
Gaia BH3 (Gaia DR3 4318465066420528000) is a binary system consisting of a metal-poor K2 star and a stellar-mass black hole. Gaia BH3 is located 1839 light years away (0.5906±0.0058 kpc away) in the constellation of Aquila, making it as of 2024[update] the heaviest known black hole system second-closest to Earth. Gaia BH3 is the third black hole discovered from Gaia DR3 astrometric data.[2]
The black hole and star orbit the system barycentre every 11.6 years, with an orbital distance of between 4.5–29 AU.[3] The black hole's mass is 32.70 M☉, the heaviest known stellar black hole in the Milky Way.
Discovery
Gaia BH3 was originally found by astrometric observations with Gaia in 2015 and became a black hole binary candidate by the European Space Agency on 16 April, 2024. [2][4]
References
- ^ a b 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.
- ^ a b c d Panuzzo, z; Panuzzo (2024). "Discovery of a dormant 33 solar-mass black hole in pre-release Gaia astrometry". The Astrophysical Journal. doi:10.1051/0004-6361/202449763.
- ^ Dunham, Will (April 16, 2024). "Astronomers detect Milky Way's second-largest known black hole". Reuters.
- ^ "Most massive stellar black hole in our galaxy found". European Southern Observatory. 16 April 2024. Archived from the original on 16 April 2024.