Pi Boötis, Latinized from π Boötis, is a probable triple star system in the northern constellation of Boötes. It is visible to the naked eye with a combined...

formed from modern Zeta, Omicron and Pi Boötis, while Yousheti was formed from modern Eta, Tau and Upsilon Boötis. Dixi, the Emperor's ceremonial banquet...

prominent stars, Arcturus (α Boötis), Seginus (γ Boötis), Alphecca (α Coronae Borealis), and centered on Izar (ε Boötis). From the United Kingdom in particular...

Film No Song Composer(s) Co-artist(s) 101 Days 440 "Pi Ka Naam" Raam Laxman Solo Aaj Ki Taaqat 441 "Jaan Meri Jaanu" Bappi Lahiri Bappi Lahiri 442 "Hello...

Gray, R. O.; Corbally, C. J. (August 2002), "A Spectroscopic Search for λ Bootis and Other Peculiar A-Type Stars in Intermediate-Age Open Clusters", The...

7 times larger and more massive than the Sun. It was a candidate Lambda Boötis star, suggesting it may have accreted low-metallicity circumstellar gas...

; et al. (July 2014), "Investigating the possible connection between λ Bootis stars and intermediate Population II type stars", Astronomy & Astrophysics...

The PL-15 (Chinese: 霹雳-15; pinyin: Pī Lì-Yāo Wǔ; lit. 'Thunderbolt-15', NATO reporting name: CH-AA-10 Abaddon) is an active radar-guided long-range air-to-air...

main-sequence star with a stellar classification of A3 Va. It is a Lambda Boötis star, which means the spectrum shows lower-than-expected abundances for...

Star 3.49 3.47 Beta Boötis Star 3.49 Alpha Telescopii Star Suspected variable star 3.49 Nu Ursae Majoris Star 3.49 Delta Boötis Double star 3.50 Tau...

integration from θ = − π 2 {\textstyle \theta =-{\frac {\pi }{2}}} to θ = π 2 {\textstyle \theta ={\frac {\pi }{2}}} and conservation of energy, and sinc ⁡ x =...

period of the Sun's circulation around the point is 2 π / κ {\displaystyle 2\pi /\kappa } . which, using the equivalence that a parsec equals 1 km/s times...

/ɔːˈraɪdʒiː/ ancient (Ptolemy) charioteer Capella Boötes /boʊˈoʊtiːz/ Boo Boot Boötis /boʊˈoʊtɪs/ ancient (Ptolemy) herdsman Arcturus Caelum /ˈsiːləm/ Cae Cael...

Has 4 exoplanets. HD 204313 157.0 ± 0.3 1 G5V 7.99 Has 3 exoplanets. Rho Boötis 160 ± 1 1 K4 III 3.59 Beta Canis Minoris (Gomeisa) 161 1 B8V Epsilon Andromedae...

. {\displaystyle U=-G\int _{0}^{R}{\frac {4\pi r^{3}\rho 4\pi r^{2}\rho }{3r}}\,dr=-{\frac {16}{15}}G\pi ^{2}\rho ^{2}R^{5}.} Recasting in terms of the...

(r)}}][1+{\frac {4\pi r^{3}p(r)}{M(r)c^{2}}}][1-{\frac {2GM(r)}{c^{2}r}}]} d M d r = 4 π r 2 ϵ ( r ) c 2 {\displaystyle {\frac {dM}{dr}}={\frac {4\pi r^{2}\epsilon...

equation: d m d r = 4 π r 2 ρ . {\displaystyle {{\mbox{d}}m \over {\mbox{d}}r}=4\pi r^{2}\rho .} Integrating the mass continuity equation from the star center...

The first non-transiting planet to have its mass found this way was Tau Boötis b in 2012 when carbon monoxide was detected in the infrared part of the...

{\frac {{\text{d}}T(r)}{{\text{d}}r}}\ =\ -{\frac {3\kappa (r)\rho (r)L(r)}{(4\pi r^{2})(16\sigma _{B})T^{3}(r)}}} where κ(r) is the opacity, ρ(r) is the matter...

; et al. (July 2014), "Investigating the possible connection between λ Bootis stars and intermediate Population II type stars", Astronomy & Astrophysics...

{\displaystyle G\rho ={d \over 4\pi r^{2}dr}{r^{2}d\Phi \over dr}={d(GM) \over 4\pi r^{2}dr}={3V_{0}^{2} \over 4\pi r_{0}^{2}}H(r_{0}-r),} where the enclosed...

Period-Luminosity-Colour-Metallicity relation and the pulsational characteristics of λ Bootis type stars". Astronomy & Astrophysics. 392 (2): 515–528. arXiv:astro-ph/0207494...

4 π G 3 / 2 ( μ H k ) 5 / 2 M 1 / 2 R 3 / 2 P T 5 / 2 {\displaystyle E=4\pi G^{3/2}\left({\frac {\mu H}{k}}\right)^{5/2}{\frac {M^{1/2}R^{3/2}P}{T^{5/2}}}}...

x\approx x{\text{ radians}}=x\cdot {\frac {180}{\pi }}{\text{ degrees}}=x\cdot 180\cdot {\frac {3600}{\pi }}{\text{ arcseconds}},} so the parallax, measured...

radiated by the planet: P r a d = 4 π r 2 σ T 4 {\displaystyle P_{\rm {rad}}=4\pi r^{2}\sigma T^{4}} Equating these two expressions and rearranging gives an...

47.1 ± 5.9 1 T6 WISE 0744+5628 47.3 1 T8 WISE 1309-1600 47.3 1 T? Theta Boötis «Asellus Primus» 47.5 ± 0.4 2 F7V 4.05 Nu² Lupi 47.5 ± 0.5 1 G2V 5.78 has...

{c}{\kappa }}\int _{V}\nabla ^{2}\Phi \,dV={\frac {4\pi Gc}{\kappa }}\int _{V}\rho \,dV={\frac {4\pi GMc}{\kappa }}} where M {\displaystyle M} is the mass...

{\displaystyle \psi _{0}\left(\mathbf {r} ,t\right)=A_{u}e^{i\left(\phi _{u}+2\pi \nu t+\mathbf {k} \cdot \mathbf {r} \right)}} where ψ 0 {\displaystyle \psi...

Semi-classically, the cross section is proportional to π λ 2 {\displaystyle \pi \,\lambda ^{2}} , where λ = h / p {\displaystyle \lambda =h/p} is the de Broglie...

applied to a perfect black body: L = 4 π R 2 σ T e f f 4 {\displaystyle L=4\pi R^{2}\sigma \,T_{eff}^{4}} . Thus, any value of R corresponds to a certain...