MASCARA

Edit links
Coordinates: 29°15′25″S 70°44′16″W / 29.257078°S 70.737822°W / -29.257078; -70.737822
Source: Wikipedia, the free encyclopedia.
MASCARA
The five cameras that form the MASCARA system installed at La Silla Observatory
Alternative namesMulti-site All-Sky CAmeRA Edit this at Wikidata
Part ofLa Silla Observatory
Roque de los Muchachos Observatory Edit this on Wikidata
Location(s)Spain, Chile Edit this at Wikidata
Coordinates29°15′25″S 70°44′16″W / 29.257078°S 70.737822°W / -29.257078; -70.737822 Edit this at Wikidata
Telescope styleoptical telescope Edit this on Wikidata
Websitemascara1.strw.leidenuniv.nl Edit this at Wikidata
  Related media on Commons
[edit on Wikidata]
The compact housing of MASCARA at La Silla Observatory

MASCARA (Multi-site All-Sky CAmeRA) is an

hemisphere, each of which use cameras to make short exposure photographs of most of the visible sky[1] to observe stars to a magnitude of 8.4.[2] The Northern Hemisphere station at Roque de los Muchachos Observatory, La Palma, started observations in February 2015. The Southern Hemisphere station at La Silla Observatory, Chile, saw first light in July 2017.[3]

MASCARA-1b

Main article: MASCARA-1b

On 17 July 2017, the discovery of

A-type star; its orbit is misaligned with the star's rotation.[4] The planet was found unusually reflective for hot Jupiter with the measured geometric albedo of 0.171+0.066
−0.068 and dayside temperature of 3062+66
−68 K.[5] Attempts to spectroscopically characterize its composition were failing as in 2022 due to relatively high planetary surface gravity resulting in compact atmosphere.[6]

MASCARA-2b

Main article: KELT-20b

A second planet,

MASCARA-2b
was announced in 2022.

MASCARA-4b

Main article: HD 85628 Ab

A planet MASCARA-4b (also known as HD 85628 Ab) discovery was announced in 2019. It is a hot Jupiter on retrograde and slightly eccentric orbit.[11] The planet is unusually reflective for a hot Jupiter.[12] Hydrogen, sodium, magnesium, calcium and iron emission from planetary atmosphere was detected.[13]

MASCARA-5b

Main article: TOI-1431 b

In 2021, a planet MASCARA-5b (more commonly known as

Ultra-hot Jupiter. Its dayside temperature is 2,700 K (2,427 °C), making it hotter than 40% of stars in our galaxy.[14] The nightside temperature is 2,600 K (2,300 °C).[15]

List of discovered exoplanets

Star Constellation Right
ascension 		Declination App.
mag.
ly
) 		Spectral
type 		Planet Mass
(MJ) 		Radius
(RJ) 		Orbital
period
(d)
Semimajor
axis
(AU
)
Orbital
eccentricity
Inclination
(°
) 		Discovery
year
MASCARA-1 Equuleus 21h 10m 12.4s +10° 44′ 20″ 8.3 188.7 A8 b 3.7 1.5 2.14878 0.043 0 87 2017
MASCARA-2 Cygnus 19h 38m 38.7s +31° 13′ 09″ 7.58 137 A2V b 3.518 1.83 3.4741085 0.0542 0.0 86.2 2017
MASCARA-3 Ursa Major 10h 47m 38s +71° 39′ 21″ 8.4 96.79 F5
b
 5.18 1.272 5.5514926 0.06971 89.16 83.11 2019
MASCARA-4 Carina 09h 50m 19.2s −66° 06′ 50″ 86.7 171.54 A3V b 3.1 1.53 2.82406 0.047 0 88.81 2019
MASCARA-5
 Cepheus 21h 04m 49s +55° 35′ 17″ 8 149.6 AmC b 3.14 1.508 2.65022 0.047 0.01 80.4 2021

References

  1. ^ "Multi-site All-Sky CAmeRA – Official Website". Leiden Astronomy MASCARA group. Retrieved 26 July 2017.
  2. ^ "Eyes Wide Open for MASCARA in Chile – Exoplanet hunter sees first light at ESO's La Silla Observatory". European Southern Observatory. Retrieved 26 July 2017.
  3. ^ "Eyes Wide Open for MASCARA in Chile – Exoplanet hunter sees first light at ESO's La Silla Observatory". European Southern Observatory. 19 July 2017. Retrieved 26 July 2017.
  4. S2CID 119259578
    .
  5. arXiv:2109.05031
  6. arXiv:2206.09443
  7. S2CID 119422884
    .
  8. arXiv:2201.02261
  9. arXiv:2208.04759
  10. arXiv:2201.08759
  11. arXiv:1904.02733
  12. arXiv:1911.05025
  13. arXiv:2208.11427
  14. ^ "Scientists uncover a 'hellish' planet so hot it could vaporize most metals". CNET. April 27, 2021. Retrieved April 27, 2021.
  15. ^ "'Hellish' new planet discovered". University of Southern Queensland. April 27, 2021. Retrieved April 27, 2021.

Papers

  • G.J.J. Talens et al., The Multi-site All-Sky CAmeRA: Finding transiting exoplanets around bright (mV < 8) stars, accepted for publication in A&A
    arXiv:1702.03931

External links
Stub icon

This article about a specific observatory, telescope or astronomical instrument is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=MASCARA&oldid=1186295795"