Rho Tauri (ρ Tau, ρ Tauri) is a star in the constellation Taurus and a member of the Hyades star cluster. Rho Tauri is a white A-type main sequence dwarf...

The Rho Ophiuchi cloud complex is a complex of interstellar clouds with different nebulae, particularly a dark nebula which is centered 1° south of the...

association of the cloud, contains the variable star T Tauri, which is the prototype of T Tauri stars. The many young stars and the close proximity to...

roughly to classical T Tauri stars, while Class III stars have lost their disks and correspond approximately to weak-line T Tauri stars. An intermediate...

After a protostar ends its phase of rapid contraction and becomes a T Tauri star, it is extremely luminous. The star continues to contract, but much...

longer used – Bayer’s Uranometria and Bayer letters Also designated as Beta Tauri (β Tau) Now included in the constellation Lynx Also designated Psi Herculis...

the constellation Taurus (the Bull) is designated α Tauri (abbreviated α Tau, pronounced Alpha Tauri), which means "Alpha of the Bull". Bayer used Greek...

SR 12 (also known as V2247 Oph) is a weak-line T-Tauri binary that has a planetary-mass companion with a detected accretion disk. SR 12 was discovered...

Montmerle, T. (January 1994). "From T Tauri stars to protostars: Circumstellar material and young stellar objects in the rho Ophiuchi cloud". Astrophysical Journal...

− G ρ ( r ) M enc ( r ) r 2 , {\displaystyle {\frac {dp}{dr}}=-{\frac {G\rho (r)M_{\text{enc}}(r)}{r^{2}}},} where M enc ( r ) {\textstyle M_{\text{enc}}(r)}...

Theodosius had been set up by Arcadius's father Theodosius I in the forum Tauri in the 380s and follows the tradition of triumphal columns established by...

Muscae) 353 ± 1 1 kB8 – A0Vae 6.68 – 6.87 V1298 Tauri 354 ± 2 1 K0-K1.5 10.31 - 10.43 Has 4 exoplanets. Rho Hydrae 354 ± 8 1 A0 Vn 4.34 Tau1 Aquarii 355...

constellation boundary and switch constellations as a consequence. In 1992, Rho Aquilae became the first star to have its Bayer designation "invalidated"...

1825 09:10 Venus Delta-1 Tauri 44.4° West 11 July 1837 12:50 Mercury Eta Geminorum 17.8° West 9 May 1841 19:35 Venus 17 Tauri 9.2° East 27 September 1843...

{\displaystyle {\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...

globule Young stellar object Protostar Pre-main-sequence Herbig Ae/Be T Tauri Herbig–Haro object Hayashi track Henyey track Evolution Main sequence Red-giant...

Rift (astronomy) Cygnus Rift Serpens–Aquila Rift Dark Horse (astronomy) Rho Ophiuchi cloud complex Emu in the sky List of dark nebulae Bok globule Dark...

reference is kept for each research subfield. Appenzeller, I. and Mundt, R., “T Tauri stars”, Astronomy and Astrophysics Review, 1, 291–334, 1989 Appenzeller...

Omega Scorpii (B1 V), 42 Orionis (B1 V), 22 Scorpii (B3 V), Rho Aurigae (B5 V), and 18 Tauri (B8 V). The Revised MK Spectra Atlas of Morgan, Abt, & Tapscott...

{\nabla p}{\rho }}-\nabla \Phi =0} where u {\displaystyle u} is the velocity, p {\displaystyle p} is the pressure, ρ {\displaystyle \rho } is the density...

closest star-forming regions are the Corona Australis Molecular Cloud, the Rho Ophiuchi cloud complex and the Taurus molecular cloud; the latter lies just...

spherical symmetry), one considers the matter density ρ ( r ) {\displaystyle \rho (r)} , temperature T ( r ) {\displaystyle T(r)} , total pressure (matter...

3.39 3.30 Rho Persei Star 3.39 Meissa Double star 3.408 Beta Pavonis Star 3.410 3.35 Theta2 Tauri Binary star system 3.41 3.37 Lambda Tauri Triple star...

other and an accretion disk forms instead. Accretion disks surrounding T Tauri stars or Herbig stars are called protoplanetary disks because they are thought...

stars Gamma, Delta¹, Delta², Delta³, Epsilon, Theta Tauri, as well as the bright star Alpha Tauri (Aldebaran) which forms the red eye of the Bull. Other...

receive spectral types with supergiant luminosity classes. For example, RV Tauri has an Ia (bright supergiant) luminosity class despite being less massive...

subclass, and stars with periods greater than 20 days belong to the RV Tauri subclass. Type II Cepheids are used to establish the distance to the Galactic...

emission from main-sequence stars. The earliest detections of X-rays from T Tauri stars were made by the Einstein X-ray Observatory. For low-mass stars X-rays...

{\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 mass of...

supergiants Betelgeuse, Antares, and VV Cephei A; the yellow hypergiant Rho Cassiopeiae; the luminous blue variable Eta Carinae that has already produced...