HD 95086, formally named Aiolos, is a

pre-main-sequence star A pre-main-sequence star (also known as a PMS star and PMS object) is a star in the stage when it has not yet reached the main sequence. Earlier in its life, the object is a protostar that grows by acquiring mass from its surrounding envelope o ...

about away. Its surface temperature is 7,750 K. HD 95086 is somewhat metal-deficient in comparison to the

Sun The Sun is the star at the centre of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light a ...

, with a

metallicity In astronomy, metallicity is the Abundance of the chemical elements, abundance of Chemical element, elements present in an object that are heavier than hydrogen and helium. Most of the normal currently detectable (i.e. non-Dark matter, dark) matt ...

Fe/H index of −0.25 (~55%), and is much younger at an age of 13.3 million years. It was originally thought to be part of the Lower Centaurus-Crux association, until it was found using ''

Gaia In Greek mythology, Gaia (; , a poetic form of ('), meaning 'land' or 'earth'),, , . also spelled Gaea (), is the personification of Earth. Gaia is the ancestral mother—sometimes parthenogenic—of all life. She is the mother of Uranus (S ...

'' data that the star may be instead part of the Carina association. Multiplicity surveys did not detect any stellar companions to HD 95086 as of 2013.

Nomenclature

The designation ''HD 95086'' comes from the

Henry Draper Catalogue The ''Henry Draper Catalogue'' (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the ''Henry Draper Extension'' (HDE), published between 192 ...

. In August 2022, this planetary system was included among 20 systems to be named by the third

NameExoWorlds NameExoWorlds (also known as IAU NameExoWorlds) were various projects managed by the International Astronomical Union (I.A.U.) to encourage names to be submitted for astronomical objects, notably exoplanets. The accepted names would later be cons ...

project. The approved names, proposed by a team from

Greece Greece, officially the Hellenic Republic, is a country in Southeast Europe. Located on the southern tip of the Balkan peninsula, it shares land borders with Albania to the northwest, North Macedonia and Bulgaria to the north, and Turkey to th ...

, were announced in June 2023. HD 95086 is named Aiolos after a Greek mythological figure, and its planet is named Levantes, from a modern Greek word referring to easterly Mediterranean winds.

Planetary system

In 2013, one planet, named HD 95086 b, was discovered on a wide orbit by direct imaging. The discovery was confirmed in 2014. Besides the planet, the star is surrounded by a complex, relatively massive (0.5 ) debris disk, which may consist of up to four belts (Hot, Warm, Cold and Halo) separated by gaps. A small amount (1.4–13)×10⁻⁶ of gaseous

carbon monoxide Carbon monoxide (chemical formula CO) is a poisonous, flammable gas that is colorless, odorless, tasteless, and slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the si ...

was detected in the outer disk, implying a recent collisional cascade followed by cometary activity of fresh debris.

References

{{DEFAULTSORT:HD 95086 Carina (constellation) Pre-main-sequence stars Planetary systems with one confirmed planet Circumstellar disks J10570301-6840023 CD-68 847 053524 095086 Aiolos