MASCARA

MASCARA (Multi-site All-Sky CAmeRA) is an exoplanet experiment by Leiden University. It has two stations, one in each 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
The five cameras that form the MASCARA system installed at La Silla Observatory
Alternative namesMulti-site All-Sky CAmeRA
Part ofLa Silla Observatory
Roque de los Muchachos Observatory 
Location(s)Spain, Chile
Coordinates29°15′25″S 70°44′16″W
Telescope styleoptical telescope 
Websitemascara1.strw.leidenuniv.nl
Related media on Wikimedia Commons
The compact housing of MASCARA at La Silla Observatory

MASCARA-1b

On 17 July 2017, the discovery of MASCARA-1b, a confirmed exoplanet, was reported by the survey team. MASCARA-1b is a hot Jupiter transiting its parent 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]

MASCARA-2b

A second planet, MASCARA-2b, also known as KELT-20b, was also announced in 2017. It is a hot Jupiter orbiting an A-type star.[6] The carbon monoxide, steam[7] and neutral iron[8] detection in the atmosphere of MASCARA-2b was announced in 2022.

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. Talens, G. J. J; et al. (2017). "MASCARA-1 b. A hot Jupiter transiting a bright mV = 8.3 A-star in a misaligned orbit". Astronomy & Astrophysics. 606: A73. arXiv:1707.04262. Bibcode:2017A&A...606A..73T. doi:10.1051/0004-6361/201731282. S2CID 119259578.
  5. Spi-OPS:Spitzer and CHEOPS confirm the near-polar orbit of MASCARA-1b and reveal a hint of dayside reflection, 2021, arXiv:2109.05031
  6. Talens, G. J. J; et al. (2018). "MASCARA-2 b: A hot Jupiter transiting a mV = 7.6 A-star". Astronomy & Astrophysics. A57: 612. arXiv:1707.01500. Bibcode:2018A&A...612A..57T. doi:10.1051/0004-6361/201731512. S2CID 119422884.
  7. Strong H2O and CO emission features in the spectrum of KELT-20b driven by stellar UV irradiation, 2022, arXiv:2201.02261
  8. Detection of iron emission lines and a temperature inversion on the dayside of the ultra-hot Jupiter KELT-20b, 2022, arXiv:2201.08759

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
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.