Astronomy:WASP-79
WASP-79, also named Montuno, is an F-type main-sequence star about 801 light-years (246 parsecs) away in the constellation Eridanus. With an apparent magnitude of 10, it is much too faint to be visible to the naked eye. With 1.26 M☉ and 1.73 R☉, it is both larger and more massive than the Sun. Its effective temperature is 6,365 K, making it hotter than the Sun.[1] It hosts one known exoplanet, WASP-79b.
Nomenclature
The designation WASP-79 comes from the Wide Angle Search for Planets; other designations include CD−30 1812 from the Durchmusterung catalog.
This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Panama. The approved names were Montuno for the star and Pollera for the planet, after the traditional costumes worn by a man and woman in the Panamanian folk dance El Punto.[2][3]
Planetary system
The planet WASP-79b, later named Pollera, is a large, low-density hot Jupiter, discovered in 2012 by the Wide Angle Search for Planets using the transit method.[4] It has a nearly polar orbit.[5][6] Observations by the Hubble Space Telescope[7] have been used to characterize its atmosphere,[8] detecting molecules such as water vapor[9] and measuring its temperature.[10]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b / Pollera | 0.835±0.077 MJ | 0.05014+0.00035 −0.00034 |
3.66239094(60) | <0.066[12] | 85.52±0.1° | 1.5795±0.0048 RJ |
References
- ↑ de Laverny, Patrick; Ligi, Roxanne et al. (July 2025). "The Gaia spectroscopic catalogue of exoplanets and host stars". Astronomy & Astrophysics 699: A100. doi:10.1051/0004-6361/202554739. ISSN 0004-6361. Bibcode: 2025A&A...699A.100D.
- ↑ "Approved names". IAU. https://nameexoworlds.iau.org/final-results.
- ↑ "Panama". IAU. https://nameexoworlds.iau.org/panama.
- ↑ Smalley, B.; Anderson, D. R. et al. (November 2012). "WASP-78b and WASP-79b: two highly-bloated hot Jupiter-mass exoplanets orbiting F-type stars in Eridanus". Astronomy & Astrophysics 547: A61. doi:10.1051/0004-6361/201219731. ISSN 0004-6361. Bibcode: 2012A&A...547A..61S.
- ↑ Addison, B. C.; Tinney, C. G. et al. (August 2013). "A Nearly Polar Orbit for the Extrasolar Hot Jupiter WASP-79b". The Astrophysical Journal 774 (1): L9. doi:10.1088/2041-8205/774/1/L9. ISSN 2041-8205. Bibcode: 2013ApJ...774L...9A.
- ↑ Johnson, Marshall C.; Cochran, William D. et al. (October 2017). "Spin–Orbit Misalignments of Three Jovian Planets via Doppler Tomography". The Astronomical Journal 154 (4): 137. doi:10.3847/1538-3881/aa8462. ISSN 0004-6256. Bibcode: 2017AJ....154..137J.
- ↑ Skaf, Nour; Bieger, Michelle Fabienne et al. (September 2020). "ARES. II. Characterizing the Hot Jupiters WASP-127 b, WASP-79 b, and WASP-62b with the Hubble Space Telescope". The Astronomical Journal 160 (3): 109. doi:10.3847/1538-3881/ab94a3. ISSN 0004-6256. Bibcode: 2020AJ....160..109S.
- ↑ Sotzen, Kristin S.; Stevenson, Kevin B. et al. (January 2020). "Transmission Spectroscopy of WASP-79b from 0.6 to 5.0 μm". The Astronomical Journal 159 (1): 5. doi:10.3847/1538-3881/ab5442. ISSN 0004-6256. Bibcode: 2020AJ....159....5S.
- ↑ Rathcke, Alexander D.; MacDonald, Ryan J. et al. (October 2021). "HST PanCET Program: A Complete Near-UV to Infrared Transmission Spectrum for the Hot Jupiter WASP-79b". The Astronomical Journal 162 (4): 138. doi:10.3847/1538-3881/ac0e99. ISSN 0004-6256. Bibcode: 2021AJ....162..138R.
- ↑ Foote, Trevor O.; Lewis, Nikole K. et al. (January 2022). "The Emission Spectrum of the Hot Jupiter WASP-79b from HST/WFC3". The Astronomical Journal 163 (1): 7. doi:10.3847/1538-3881/ac2f4a. ISSN 0004-6256. Bibcode: 2022AJ....163....7F.
- ↑ Saha, Suman (September 2024). "Precise Transit Photometry Using TESS. II. Revisiting 28 Additional Transiting Systems with Updated Physical Properties". The Astrophysical Journal Supplement Series 274 (1): 13. doi:10.3847/1538-4365/ad6a60. ISSN 0067-0049. Bibcode: 2024ApJS..274...13S.
- ↑ Bonomo, A. S.; Desidera, S. et al. (June 2017). "The GAPS Programme with HARPS-N at TNG: XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy & Astrophysics 602: A107. doi:10.1051/0004-6361/201629882. ISSN 0004-6361. Bibcode: 2017A&A...602A.107B.
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Further reading
- Gressier, A.; Lecavelier des Etangs, A. et al. (April 2023). "The Hubble PanCET program: The near-ultraviolet transmission spectrum of WASP-79b". Astronomy & Astrophysics 672: A34. doi:10.1051/0004-6361/202244429. ISSN 0004-6361. Bibcode: 2023A&A...672A..34G.
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