WASP-41
{{Short description|Star in the constellation Centaurus}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000
| constell = Centaurus
}}
{{Starbox character
| type = main-sequence star
}}
{{Starbox astrometry
| radial_v = 4.153{{cite Gaia DR3|6160877943251930368}}
| parallax = 6.1193
| p_error = 0.0203
}}
{{Starbox detail
| temperature = 5,450{{±|150}}
| metal_fe = −0.080{{±|0.090}}
| rotation = 18.4 d
| rotational_velocity = 1.50{{±|0.05}}
}}
{{Starbox catalog
| names = {{odlist|CD=-29 98732|2MASS = J12422849-3038235|GSC=07247-00587|TYC=7247-587-1}}{{cite simbad|title=CD-29 9873|access-date=2020-12-22}}
}}
{{Starbox reference
| Simbad = CD-29 9873
}}
{{Starbox end}}
WASP-41 is a G-type main-sequence star. Its surface temperature is 5450{{±|150}} K. WASP-41 is similar to the Sun in its concentration of heavy elements, with a metallicity Fe/H index of −0.080{{±|0.090}}, but is much younger at an age of 2.289{{±|0.077}} billion years. The star does exhibit strong starspot activity, with spots covering 3% of the stellar surface.
Planetary system
In 2012, one planet, named WASP-41b, was discovered on a tight, circular orbit.{{citation|arxiv=1012.2977|title=WASP-41 b: A transiting hot Jupiter planet orbiting a magnetically-active G8 V star|year=2010|doi=10.1086/660007|last1=Maxted|first1=P. F. L.|last2=Anderson|first2=D. R.|last3=Collier Cameron|first3=A.|last4=Hellier|first4=C.|last5=Queloz|first5=D.|last6=Smalley|first6=B.|last7=Street|first7=R. A.|last8=Triaud|first8=A. H. M. J.|last9=West|first9=R. G.|last10=Gillon|first10=M.|last11=Lister|first11=T. A.|last12=Pepe|first12=F.|last13=Pollacco|first13=D.|last14=Ségransan|first14=D.|last15=Smith|first15=A. M. S.|last16=Udry|first16=S.|journal=Publications of the Astronomical Society of the Pacific|volume=123|issue=903|pages=547–554|s2cid=40017204}} The transmission spectrum taken in 2017 was gray and featureless. No atmospheric constituents could be distinguished.{{citation|arxiv=1710.11209|title=PyTranSpot- A tool for multiband light curve modeling of planetary transits and stellar spots|year=2018|doi=10.1051/0004-6361/201731345|last1=Juvan|first1=Ines G.|last2=Lendl|first2=M.|last3=Cubillos|first3=P. E.|last4=Fossati|first4=L.|last5=Tregloan-Reed|first5=J.|last6=Lammer|first6=H.|last7=Guenther|first7=E. W.|last8=Hanslmeier|first8=A.|journal=Astronomy & Astrophysics|volume=610|pages=A15|bibcode=2018A&A...610A..15J|s2cid=55138492}} The planetary orbit of WASP-41b is slightly misaligned with the equatorial plane of the star, at a misalignment angle of 9.15{{±|2.85|2.62}}°.{{citation |arxiv=1809.01027 |title=Activity induced variation in spin-orbit angles as derived from Rossiter-McLaughlin measurements |year=2018 |doi=10.1051/0004-6361/201833709 |last1=Oshagh |first1=M. |last2=Triaud |first2=A. H. M. J. |last3=Burdanov |first3=A. |last4=Figueira |first4=P. |last5=Reiners |first5=Ansgar |last6=Santos |first6=N. C. |last7=Faria |first7=J. |last8=Boue |first8=G. |last9=Díaz |first9=R. F. |last10=Dreizler |first10=S. |last11=Boldt |first11=S. |last12=Delrez |first12=L. |last13=Ducrot |first13=E. |last14=Gillon |first14=M. |last15=Guzman Mesa |first15=A. |last16=Jehin |first16=E. |last17=Khalafinejad |first17=S. |last18=Kohl |first18=S. |last19=Serrano |first19=L. |last20=Udry |first20=S. |journal=Astronomy & Astrophysics |volume=619 |pages=A150 |bibcode=2018A&A...619A.150O |s2cid=54578441 }} Planetary equilibrium temperature is 1242{{±|12}} K.
Another planet, WASP-41c, was discovered in 2015.{{cite journal | title=Hot Jupiters with relatives: Discovery of additional planets in orbit around WASP-41 and WASP-47 | url=https://www.aanda.org/articles/aa/full_html/2016/02/aa26965-15/aa26965-15.html | last1=Neveu-VanMalle | first1=M. | last2=Queloz | first2=D. | last3=Anderson | first3=D. R. | last4=Brown | first4=D. J. A. | last5=Collier Cameron | first5=A. | last6=Delrez | first6=L. | last7=Díaz | first7=R. F. | last8=Gillon | first8=M. | last9=Hellier | first9=C. | last10=Jehin | first10=E. | last11=Lister | first11=T. | last12=Pepe | first12=F. | last13=Rojo | first13=P. | last14=Ségransan | first14=D. | last15=Triaud | first15=A. H. M. J. | last16=Turner | first16=O. D. | last17=Udry | first17=S. | display-authors=1 | journal=Astronomy and Astrophysics | volume=586 | at=A93 | year=2016 | arxiv=1509.07750 | bibcode=2016A&A...586A..93N | doi=10.1051/0004-6361/201526965 | s2cid=53354547 }} The planets are too far apart to significantly affect each other's orbits.{{citation|arxiv=1710.11140|title=How do External Companions Affect Spin-Orbit Misalignment of Hot Jupiters?|year=2018|doi=10.1093/mnras/sty133|last1=Lai|first1=Dong|last2=Anderson|first2=Kassandra R.|last3=Pu|first3=Bonan|journal=Monthly Notices of the Royal Astronomical Society|volume=475|issue=4|pages=5231–5236|doi-access=free |bibcode=2018MNRAS.475.5231L|s2cid=119066265}} The planetary equilibrium temperature of WASP-41c is 247{{±|5}} K.
{{OrbitboxPlanet begin
| name = WASP-41
}}
{{OrbitboxPlanet
| exoplanet = b
| mass = 0.941{{±|0.065|0.064}}
| radius = 1.200{{±|0.060}}
| semimajor = 0.04022{{±|0.00044}}
| period = 3.0524010{{±|0.000004}}
| eccentricity = <0.12
| inclination = 87.700{{±|0.080}}
}}
{{OrbitboxPlanet
| exoplanet = c{{citation|arxiv=1710.01737|year=2017|doi=10.3847/1538-3881/aa9176|last1=Becker|first1=Juliette C.|last2=Vanderburg|first2=Andrew|last3=Adams|first3=Fred C.|last4=Khain|first4=Tali|last5=Bryan|first5=Marta|title=Exterior Companions to Hot Jupiters Orbiting Cool Stars Are Coplanar|journal=The Astronomical Journal|volume=154|issue=6|page=230|bibcode=2017AJ....154..230B|s2cid=119198122 |doi-access=free }}
| mass = >3.2{{±|0.20}}
| radius =
| semimajor = 1.36{{±|0.04}}
| period = 421{{±|2}}
| eccentricity = 0.294{{±|0.024}}
| inclination = >70
}}
{{Orbitbox end}}
References
{{Reflist|refs=
{{Cite constellation|WASP-41}}
}}
{{Sky|12|42|28.4949|-|30|38|23.5276}}
{{Stars of Centaurus}}
{{DEFAULTSORT:WASP-41}}
Category:Planetary transit variables
Category:G-type main-sequence stars