WASP-34, also named Amansinaya,
is a sunlike
star
A star is a luminous spheroid of plasma (physics), plasma held together by Self-gravitation, self-gravity. The List of nearest stars and brown dwarfs, nearest star to Earth is the Sun. Many other stars are visible to the naked eye at night sk ...
of
spectral type
In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the ...
G5V that has 1.01 times the mass and 0.93 times the diameter of 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 ...
. It rotates on its axis every days, indicating it is around 6.7 billion years old. It hosts at least one
exoplanet
An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first det ...
.
[
]
Naming
In 2019 the IAU
The International Astronomical Union (IAU; , UAI) is an international non-governmental organization (INGO) with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreach, education, and developmen ...
announced as part of 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 ...
that WASP-34 and its planet WASP-34b would be given official names chosen by school children from the Philippines
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
. The star is named Amansinaya, after Aman Sinaya, which is one of the two trinity deities of the Philippine's Tagalog mythology, and is the primordial deity of the ocean
The ocean is the body of salt water that covers approximately 70.8% of Earth. The ocean is conventionally divided into large bodies of water, which are also referred to as ''oceans'' (the Pacific, Atlantic, Indian Ocean, Indian, Southern Ocean ...
and protector of fisherman
A fisherman or fisher is someone who captures fish and other animals from a body of water, or gathers shellfish.
Worldwide, there are about 38 million Commercial fishing, commercial and Artisan fishing, subsistence fishers and Fish farming, fi ...
. The planet WASP-34b is named Haik. Haik is the successor of the primordial Aman Sinaya as the god of the sea of the Philippines' Tagalog mythology.
Planetary system
WASP-34 has a transiting planet discovered in 2011 by the Wide Angle Search for Planets
WASP or Wide Angle Search for Planets is an international consortium of several academic organisations performing an ultra-wide angle search for exoplanets using transit photometry. The array of robotic telescopes aims to Astronomical survey, s ...
. This is a hot Jupiter
Hot Jupiters (sometimes called hot Saturns) are a class of gas giant exoplanets that are inferred to be physically similar to Jupiter (i.e. Jupiter analogue, Jupiter analogues) but that have very short orbital periods (). The close proximity to t ...
, with just over half the mass of Jupiter
Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a Jupiter mass, mass more than 2.5 times that of all the other planets in the Solar System combined a ...
and taking just 4.3 days to complete an orbit.[ The planetary color was found to be redder than other hot Jupiters, hinting at peculiar chemistry.][ The planet has a large measured temperature difference between the dayside (1185 K) and nightside (726 K).]
There is a long-period radial velocity
The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points. It is formulated as the vector projection of the target-observer relative velocity ...
trend, showing evidence for a massive object orbiting further out.[ A 2014 study suggests an object at least 15 times the mass of Jupiter at a distance of 5 AU.]
References
External links
WASP primary website
{{DEFAULTSORT:WASP-34
Crater (constellation)
Planetary systems with one confirmed planet
G-type main-sequence stars
Amansinaya
J11013589-2351382
34
CD-23 09677
0744
437242640