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Phoenix Constellations (combined) #1159

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5 changes: 5 additions & 0 deletions knowledge/science/astronomy/constellations/phoenix/attribution.txt
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Title of work: Phoenix (constellation)
Link to work: https://en.wikipedia.org/wiki/Phoenix_(constellation)
Revision: https://en.wikipedia.org/w/index.php?title=Phoenix_(constellation)&oldid=1221597018
License of the work: CC-BY-SA-4.0
Creator names: Wikipedia Authors
199 changes: 199 additions & 0 deletions knowledge/science/astronomy/constellations/phoenix/qna.yaml
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version: 3
domain: astronomy
created_by: juliadenham
seed_examples:
- context: |
**Phoenix** is a minor [constellation](constellation "wikilink") in the
[southern sky](southern_sky "wikilink"). Named after the mythical
[phoenix](Phoenix_(mythology) "wikilink"), it was first depicted on a
celestial atlas by [Johann Bayer](Johann_Bayer "wikilink") in his 1603
*[Uranometria](Uranometria "wikilink")*. The French explorer and
astronomer [Nicolas Louis de
Lacaille](Nicolas_Louis_de_Lacaille "wikilink") charted the brighter
stars and gave their [Bayer designations](Bayer_designation "wikilink")
in 1756. The constellation stretches from roughly −39 degrees to −57 degrees
[declination](declination "wikilink"), and from 23.5h to 2.5h of [right
ascension](right_ascension "wikilink"). The constellations Phoenix,
[Grus](Grus_(constellation) "wikilink"),
[Pavo](Pavo_(constellation) "wikilink") and [Tucana](Tucana "wikilink"),
are known as the Southern Birds.
questions_and_answers:
- question: |
What is the Phoenix constellation?
answer: |
Phoenix is a minor constellation in the southern sky.
- question: |
Who charted the Phoenix constellation?
answer: |
The Phoenix constellation was charted by french explorer and
astronomer Nicolas Louis de Lacaille.
- question: |
How far does the Phoenix constellation stretch?
answer: |
The phoenix constellation stretches from roughly −39° to −57°
declination, and from 23.5h to 2.5h of right ascension.
- context: |
Phoenix was the largest of the 12 constellations established by [Petrus
Plancius](Petrus_Plancius "wikilink") from the observations of [Pieter
Dirkszoon Keyser](Pieter_Dirkszoon_Keyser "wikilink") and [Frederick de
Houtman](Frederick_de_Houtman "wikilink"). It first appeared on a 35cm
diameter celestial globe published in 1597 (or 1598) in Amsterdam by
Plancius with [Jodocus Hondius](Jodocus_Hondius "wikilink"). The first
depiction of this constellation in a celestial atlas was in [Johann
Bayer](Johann_Bayer "wikilink")'s
*[Uranometria](Uranometria "wikilink")* of 1603. De Houtman included
it in his southern star catalog the same year under the Dutch name *Den
voghel Fenicx*, "The Bird Phoenix", symbolising the
[phoenix](Phoenix_(mythology) "wikilink") of classical mythology. One
name of the brightest star [Alpha
Phoenicis](Alpha_Phoenicis "wikilink")—Ankaa—is derived from the Arabic:
العنقاء, romanized: al-‘anqā’, lit. 'the phoenix', and
was coined sometime after 1800 in relation to the constellation.
questions_and_answers:
- question: |
What is the brightest star in the Phoenix constellation
called?
answer: |
Alpha Phoenicis or Ankaa is the brightest star in the Phoenix
Constellation.
- question: Where did the Phoenix constellation first appear?
answer: |
The Phoenix constellation first appeared on a 35-cm diameter
celestial globe published in 1597 (or 1598) in Amsterdam by
Plancius with Jodocus Hondius.
- question: |
What does "The Bird Phoenix" symbolize?
answer: |
"The Bird Phoenix" symbolizes the phoenix of classical mythology.
- context: |
Phoenix is a small constellation bordered by [Fornax](Fornax "wikilink")
and Sculptor to the north, Grus to the west, Tucana to the south,
touching on the corner of [Hydrus](Hydrus "wikilink") to the south, and
[Eridanus](Eridanus_(constellation) "wikilink") to the east and
southeast. The bright star [Achernar](Achernar "wikilink") is
nearby. The three-letter abbreviation for the constellation, as
adopted by the [International Astronomical
Union](International_Astronomical_Union "wikilink") in 1922, is
"Phe". The official constellation boundaries, as set by Belgian
astronomer [Eugène Delporte](Eugène_Joseph_Delporte "wikilink") in 1930,
are defined by a polygon of 10 segments. In the [equatorial coordinate
system](equatorial_coordinate_system "wikilink"), the [right
ascension](right_ascension "wikilink") coordinates of these borders lie
between 23<sup>h</sup> 26.5<sup>m</sup> and 02<sup>h</sup> 25.0<sup>m</sup>,
while the [declination](declination "wikilink")
coordinates are between −39.31° and −57.84°. This means it remains
below the horizon to anyone living north of the [40th
parallel](40th_parallel_north "wikilink") in the [Northern
Hemisphere](Northern_Hemisphere "wikilink"), and remains low in the sky
for anyone living north of the [equator](equator "wikilink"). It is most
visible from locations such as Australia and South Africa during late
[Southern Hemisphere](Southern_Hemisphere "wikilink") spring. Most
of the constellation lies within, and can be located by, forming a
triangle of the bright stars Achernar, [Fomalhaut](Fomalhaut "wikilink")
and [Beta Ceti](Beta_Ceti "wikilink")—Ankaa lies roughly in the centre
of this.
questions_and_answers:
- question: What are the characteristics of the Phoenix constellation?
answer: |
Phoenix is a small constellation bordered by Fornax and Sculptor to
the north, Grus to the west, Tucana to the south, touching on the
corner of Hydrus to the south, and Eridanus to the east and southeast.
The bright star Achernar is nearby.
- question: |
When is the phoenix constellation most visible?
answer: |
Phoenix is most visible from locations such as Australia and
South Africa during late Southern Hemisphere spring.
- question: |
What are the Phoenix Constellation boundaries?
answer: |
The official constellation boundaries for Phoenix, as set by Belgian
astronomer Eugène Delporte in 1930, are defined by a polygon of 10
segments.
- context: |
Ten stars have been found to have planets to date, and four planetary
systems have been discovered with the [SuperWASP](SuperWASP "wikilink")
project. [HD 142](HD_142 "wikilink") is a yellow giant that has an
apparent magnitude of 5.7, and has a planet ([HD 142b](HD_142_b
"wikilink")) 1.36 times the mass of Jupiter which orbits every 328 days.
[HD 2039](HD_2039 "wikilink") is a yellow subgiant with an apparent
magnitude of 9.0 around 330 light years away which has a planet ([HD 2039
b](HD_2039_b "wikilink")) six times the mass of Jupiter. [WASP-18](WASP-18
"wikilink") is a star of magnitude 9.29 which was discovered to have a hot
Jupiter-like planet ([WASP-18b](WASP-18b "wikilink")) taking less than a
day to orbit the star. The planet is suspected to be causing WASP-18 to
appear older than it really is. [WASP-4](WASP-4 "wikilink") and
[WASP-5](WASP-5 "wikilink") are solar-type yellow stars around 1000
light years distant and of 13th magnitude, each with a single planet
larger than Jupiter. [WASP-29](WASP-29 "wikilink") is an orange
dwarf of spectral type K4V and visual magnitude 11.3, which has a
planetary companion of similar size and mass to Saturn. The planet
completes an orbit every 3.9 days.
questions_and_answers:
- question: In the Phoenix constellation, how many stars have planets?
answer: |
In the Phoenix constellation, ten stars have been found to have
planets to date, and four planetary systems have been discovered
with the SuperWASP project.
- question: What is HD 142?
answer: |
HD 142 is a yellow giant that has an apparent magnitude of 5.7, and
has a planet (HD 142 b) 1.36 times the mass of Jupiter which
orbits every 328 days.
- question: |
Are WASP-4 and WASP-5 solar-type yellow stars?
answer: |
Yes, WASP-4 and WASP-5 are solar-type yellow stars around 1000 light
years distant and of 13th magnitude, each with a single planet
larger than Jupiter.
- context: |
The constellation does not lie on the
[galactic plane](galactic_plane "wikilink") of the Milky Way, and there
are no prominent star clusters. [NGC 625](NGC_625 "wikilink") is a dwarf
[irregular galaxy](irregular_galaxy "wikilink") of apparent magnitude 11.0
and lying some 12.7 million light years distant. Only 24000 light years in
diameter, it is an outlying member of the [Sculptor Group](Sculptor_Group
"wikilink"). NGC 625 is thought to have been involved in a collision and
is experiencing a burst of [active star formation](Active_galactic_nucleus
"wikilink"). [NGC 37](NGC_37 "wikilink") is a
[lenticular galaxy](lenticular_galaxy "wikilink") of apparent magnitude
14.66. It is approximately 42 [kiloparsecs](kiloparsecs "wikilink")
(137,000 [light-years](light-years "wikilink")) in diameter and about
12.9 billion years old. [Robert's Quartet](Robert's_Quartet "wikilink")
(composed of the irregular galaxy [NGC 87](NGC_87 "wikilink"), and three
spiral galaxies [NGC 88](NGC_88 "wikilink"), [NGC 89](NGC_89 "wikilink")
and [NGC 92](NGC_92 "wikilink")) is a group of four galaxies located
around 160 million light-years away which are in the process of colliding
and merging. They are within a circle of radius of 1.6 arcmin,
corresponding to about 75,000 light-years. Located in the galaxy ESO
243-49 is [HLX-1](HLX-1 "wikilink"), an
[intermediate-mass black hole](intermediate-mass_black_hole
"wikilink")—the first one of its kind identified. It is thought to be a
remnant of a dwarf galaxy that was absorbed in a
[collision](Interacting_galaxy "wikilink") with ESO 243-49. Before its
discovery, this class of black hole was only hypothesized.
questions_and_answers:
- question: |
Is the Phoenix Constellation part of the Milky Way?
answer: |
The Phoenix constellation does not lie on the galactic plane of
the Milky Way, and there are no prominent star clusters.
- question: |
How many light years away is NGC 625?
answer: |
NGC 625 is 24000 light years in diameter and is an outlying
member of the Sculptor Group.
- question: |
What is Robert's Quartet composed of?
answer: |
Robert's Quartet is composed of the irregular galaxy NGC 87,
and three spiral galaxies NGC 88, NGC 89 and NGC 92.
document_outline: |
Information about the Phoenix Constellation including the
history, characteristics, and features of the stars in the constellation.
document:
repo: https://github.com/juliadenham/Summit_knowledge
commit: 0a1f2672b9b90582e6115333e3ed62fd628f1c0f
patterns:
- phoenix_constellation.md

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