Theta1 Orionis B (θ1 Orionis B), also known as BM Orionis, is a multiple star system containing at least five members. It is also one of the main stars...
10 KB (920 words) - 07:45, 19 January 2024
Theta1 Orionis C (θ1 Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four...
8 KB (572 words) - 05:45, 27 March 2022
Theta1 Orionis A (θ1 Ori A) is a variable trinary star in the constellation Orion. Its apparent magnitude range is 6.72 to 7.65 with a period of 65.432...
10 KB (765 words) - 20:38, 18 January 2024
Trapezium Cluster (redirect from Theta1 Orionis)
Orion Trapezium Cluster, also known by its Bayer designation of Theta1 Orionis (θ1 Orionis), is a tight open cluster of stars in the heart of the Orion Nebula...
9 KB (847 words) - 08:10, 27 June 2024
Theta1 Orionis D (θ1 Orionis D) is a member of the Trapezium open cluster that lies within the Orion Nebula. It is a B class blue main sequence star with...
5 KB (383 words) - 18:38, 22 August 2024
θ1 Orionis E (Latinised as Theta1 Orionis E) is a double-lined spectroscopic binary located 4' north of θ1 Orionis A in the Trapezium Cluster. The two...
9 KB (618 words) - 11:14, 29 November 2023
responsible for the photoevaporation is the O-type star Theta1 Orionis C. 42 Orionis is the first instance of a B-type star being responsible for the photoevaporation...
9 KB (1,044 words) - 20:35, 7 August 2024
Bibcode:2008ApJ...684L..95Z. doi:10.1086/592146. S2CID 17510817. "The orbit of Theta1 Orionis C". European Southern Observatory. 18 February 2009. Retrieved 26 June...
25 KB (1,514 words) - 22:51, 29 October 2024
centered on Theta1 Orionis C, which lies on the side of an elongated molecular cloud in a cavity formed by the massive young stars. (Theta1 Orionis C emits...
45 KB (4,809 words) - 00:44, 19 November 2024
Southern Observatory. The first light images included the discovery that Theta1 Orionis F in the Trapezium Cluster is a binary. GRAVITY can operate in single-field...
9 KB (750 words) - 17:36, 21 October 2024
4 visibly bright O-type stars are Gamma Velorum, Alnitak (Zeta Orionis), Mintaka (Delta Orionis), and Zeta Puppis. The corona present in other spectral types...
30 KB (3,351 words) - 15:41, 15 October 2024
with 7 confirmed proplyds. It was also the first instance where a B-type star, 42 Orionis is responsible for the photoevaporation. In addition, 4 clear and...
27 KB (2,719 words) - 10:05, 29 October 2024
catalog König, B.; Fuhrmann, K.; Neuhäuser, R.; Charbonneau, D.; Jayawardhana, R. (2002-11-01). "Direct detection of the companion of Orionis". Astronomy...
174 KB (13,871 words) - 23:53, 29 October 2024
the following inverse square law: b = L 4 π d 2 {\displaystyle b={\frac {L}{4\pi d^{2}}}} where b {\displaystyle b} is the apparent brightness and L {\displaystyle...
19 KB (3,015 words) - 00:32, 8 September 2024
or directly to a white dwarf. Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence...
61 KB (6,826 words) - 12:04, 23 September 2024