J u m p t o c o n t e n t
M a i n m e n u
M a i n m e n u
N a v i g a t i o n
● M a i n p a g e ● C o n t e n t s ● C u r r e n t e v e n t s ● R a n d o m a r t i c l e ● A b o u t W i k i p e d i a ● C o n t a c t u s ● D o n a t e
C o n t r i b u t e
● H e l p ● L e a r n t o e d i t ● C o m m u n i t y p o r t a l ● R e c e n t c h a n g e s ● U p l o a d f i l e
S e a r c h
Search
A p p e a r a n c e
● C r e a t e a c c o u n t ● L o g i n
P e r s o n a l t o o l s
● C r e a t e a c c o u n t ● L o g i n
P a g e s f o r l o g g e d o u t e d i t o r s l e a r n m o r e ● C o n t r i b u t i o n s ● T a l k
( T o p )
1 H o s t s t a r
2 R e f e r e n c e s
T o g g l e t h e t a b l e o f c o n t e n t s
K E L T - 2 1 b
A d d l a n g u a g e s
A d d l i n k s
● A r t i c l e ● T a l k
E n g l i s h
● R e a d ● E d i t ● V i e w h i s t o r y
T o o l s
T o o l s
A c t i o n s
● R e a d ● E d i t ● V i e w h i s t o r y
G e n e r a l
● W h a t l i n k s h e r e ● R e l a t e d c h a n g e s ● U p l o a d f i l e ● S p e c i a l p a g e s ● P e r m a n e n t l i n k ● P a g e i n f o r m a t i o n ● C i t e t h i s p a g e ● G e t s h o r t e n e d U R L ● D o w n l o a d Q R c o d e ● W i k i d a t a i t e m
P r i n t / e x p o r t
● D o w n l o a d a s P D F ● P r i n t a b l e v e r s i o n
A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
KELT-21b is an extrasolar planet discovered in 2017. It is a hot Jupiter with radius of about 1.586 M J [1]
Host star [ edit ]
KELT-21b orbits KELT-21 A (HD 332124). It orbits the primary star in a triple star system , with the other two stars located 1.2 arcseconds away. These two stars, designated KELT-21 B and C, have masses of 0.13 M ☉ and 0.11 M ☉ , respectively.[1] ± 0.029M ☉ , extremely hot at 8210± 771 K [2] [3] [4] +1.7 −1.9 [5]
Transmission planetary spectroscopy was performed in 2021, based on a single transit observation in 2019. High planetary gravity and relatively low planetary temperature made detection of an atmosphere impossible that time.[6]
References [ edit ]
^ a b c d e f g h Johnson, Marshall C; Rodriguez, Joseph E; Zhou, George; Gonzales, Erica J; Cargile, Phillip A; Crepp, Justin R; Penev, Kaloyan; Stassun, Keivan G; Gaudi, B. Scott; Colón, Knicole D; Stevens, Daniel J; Strassmeier, Klaus G; Ilyin, Ilya; Collins, Karen A; Kielkopf, John F; Oberst, Thomas E; Maritch, Luke; Reed, Phillip A; Gregorio, Joao; Bozza, Valerio; Novati, Sebastiano Calchi; d'Ago, Giuseppe; Scarpetta, Gaetano; Zambelli, Roberto; Latham, David W; Bieryla, Allyson; Cochran, William D; Endl, Michael; Tayar, Jamie; et al. (2018). "KELT-21b: A Hot Jupiter Transiting the Rapidly Rotating Metal-poor Late-A Primary of a Likely Hierarchical Triple System" . The Astronomical Journal . 155 (2 ): 100. arXiv :1712.03241 Bibcode :2018AJ....155..100J . doi :10.3847/1538-3881/aaa5af S2CID 73559090 .
^ Garai, Z.; Pribulla, T.; Kovács, J.; Szabó, Gy M.; Claret, A.; Komžík, R.; Kundra, E. (2022), "Rapidly rotating stars and their transiting planets: KELT-17b, KELT-19Ab, and KELT-21b in the CHEOPS and TESS era", Monthly Notices of the Royal Astronomical Society , 513 (2 ): 2822–2840, arXiv :2204.09077 doi :10.1093/mnras/stac1095
^ Williams, D. R. (1 July 2013). "Sun Fact Sheet" . NASA Goddard Space Flight Center . Archived from the original on 15 July 2010. Retrieved 12 August 2013 .
^ "Solar System Exploration: Planets: Sun: Facts & Figures" . NASA. Archived from the original on 2 January 2008.
^ Rice, Malena; Wang, Songhu; Wang, Xian-Yu; Stefánsson, Guđmundur; Isaacson, Howard; Howard, Andrew W.; Logsdon, Sarah E.; Schweiker, Heidi; Dai, Fei; Brinkman, Casey; Giacalone, Steven; Holcomb, Rae (2022), "A Tendency Toward Alignment in Single-star Warm-Jupiter Systems", The Astronomical Journal , 164 (3 ): 104, arXiv :2207.06511 Bibcode :2022AJ....164..104R , doi :10.3847/1538-3881/ac8153 S2CID 250526491
^ Stangret, M.; Casasayas-Barris, N.; Pallé, E.; Orell-Miquel, J.; Morello, G.; Luque, R.; Nowak, G.; Yan, F. (2022), "High-resolution transmission spectroscopy study of ultra-hot Jupiters HAT-P-57b, KELT-17b, KELT-21b, KELT-7b, MASCARA-1b, and WASP-189b", Astronomy & Astrophysics , 662 : A101, arXiv :2111.13064 Bibcode :2022A&A...662A.101S , doi :10.1051/0004-6361/202141799 , S2CID 244709777
t
e
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=KELT-21b&oldid=1231806550 " C a t e g o r i e s : ● T r a n s i t i n g e x o p l a n e t s ● G i a n t p l a n e t s ● E x o p l a n e t s d i s c o v e r e d i n 2 0 1 8 ● V i r g o ( c o n s t e l l a t i o n ) ● H o t J u p i t e r s ● E x o p l a n e t s d i s c o v e r e d b y K E L T ● E x o p l a n e t s t u b s H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● A l l s t u b a r t i c l e s
● T h i s p a g e w a s l a s t e d i t e d o n 3 0 J u n e 2 0 2 4 , a t 1 0 : 5 2 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
