Jump to content

KELT-11b

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Citation bot (talk | contribs) at 19:10, 15 May 2020 (Alter: template type. Add: class, displayauthors, bibcode, page, issue, volume, journal, year, title, doi, arxiv, author pars. 1-30. Removed URL that duplicated unique identifier. Converted bare reference to cite template. Some additions/deletions were actually parameter name changes. | You can use this bot yourself. Report bugs here. | Activated by Headbomb | Category:Articles with missing Cite arXiv inputs | via #UCB_Category). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

KELT-11b
Discovery
Discovery dateJuly 6, 2016
transit
Orbital characteristics
0.06229 AU (9,318,000 km)
4.736529[1] d
StarKELT-11
Physical characteristics
1.37+0.15
−0.12
[1] RJ
Mass0.195+0.019
−0.018
[1] MJ
Mean density
0.093+0.028
−0.024
kg m−3
2.407+0.080
−0.086
m/s²
Temperature1712+51
−46
[1]

KELT-11b is an exoplanet orbiting around the yellow subgiant star KELT-11 about 320 light-years away from Earth. It is an inflated planet, one of the "puffiest planets" known, as a result of its close orbiting distance with its parent star. It has a radius 1.37 times that of Jupiter, but only 19% of its mass. It was discovered in 2016.[1]

The transmission spectrum study in 2020 have revealed the KELT-11b atmosphere containing surprisingly small amount of water vapor, but significant amounts of hydrogen cyanide, together with oxides of titaniumm and aluminum. Also, the nightside flux do indicate a generally cloud-free atmosphere with an effective heat redistribution between dayside and nightside.[2]

References

  1. ^ a b c d e Pepper, Joshua; Rodriguez, Joseph E.; Collins, Karen A.; Johnson, John Asher; Fulton, Benjamin J.; Howard, Andrew W.; Beatty, Thomas G.; Stassun, Keivan G.; Isaacson, Howard; Colón, Knicole D.; Lund, Michael B.; Kuhn, Rudolf B.; Siverd, Robert J.; Gaudi, B. Scott; Tan, T. G.; Curtis, Ivan; Stockdale, Christopher; Mawet, Dimitri; Bottom, Michael; James, David; Zhou, George; Bayliss, Daniel; Cargile, Phillip; Bieryla, Allyson; Penev, Kaloyan; Latham, David W.; Labadie-Bartz, Jonathan; Kielkopf, John; Eastman, Jason D.; Oberst, Thomas E. (2017). "KELT-11b: A Highly Inflated Sub-Saturn Exoplanet Transiting theV= 8 Subgiant HD 93396". The Astronomical Journal. 153 (5): 215. arXiv:1607.01755v1. Bibcode:2017AJ....153..215P. doi:10.3847/1538-3881/aa6572. {{cite journal}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)CS1 maint: unflagged free DOI (link)
  2. ^ Colón, Knicole D.; Kreidberg, Laura; Line, Michael; Welbanks, Luis; Madhusudhan, Nikku; Beatty, Thomas; Tamburo, Patrick; Stevenson, Kevin B.; Mandell, Avi; Rodriguez, Joseph E.; Barclay, Thomas; Lopez, Eric D.; Stassun, Keivan G.; Angerhausen, Daniel; Fortney, Jonathan J.; James, David J.; Pepper, Joshua; Ahlers, John P.; Plavchan, Peter; Awiphan, Supachai; Kotnik, Cliff; McLeod, Kim K.; Murawski, Gabriel; Chotani, Heena; LeBrun, Danny; Matzko, William; Rea, David; Vidaurri, Monica; Webster, Scott; Williams, James K. (2020). "An Unusual Transmission Spectrum for the Sub-Saturn KELT-11b Suggestive of a Sub-Solar Water Abundance". arXiv:2005.05153 [astro-ph.EP]. {{cite arXiv}}: Unknown parameter |displayauthors= ignored (|display-authors= suggested) (help)