2002AJ....124.1054K

Query : 2002AJ....124.1054K

2002AJ....124.1054K - Astron. J., 124, 1054-1059 (2002/August-0)

The eclipsing binary BG Geminorum: improved constraints on the orbit and the structure of the accretion disk.

KENYON S.J., GROOT P.J. and BENSON P.

Abstract (from CDS):

We describe new optical photometric and spectroscopic observations of the semidetached eclipsing binary BG Geminorum. A large change in the amount of Mg I absorption at secondary maximum indicates the presence of cool material in the outer edge of the disk surrounding the unseen primary star. Detection of weak He I emission implies a hot radiation source at the inner edge of the disk. If the velocity variations in the Hβ emission-line track the orbital motion of the primary star, the primary star has an orbital semiamplitude of K₁=K_Hβ=16.0±4.6 km.s^–1. This result yields a mass ratio q=0.22±0.07, consistent with the q=0.1 derived from the large ellipsoidal variation. Despite this progress, the nature of the primary star–B type star or black hole–remains uncertain.

Abstract Copyright: ∼

Journal keyword(s): Stars: Binaries: Eclipsing - Stars: Binaries: Spectroscopic - Stars: Emission-Line, Be - Stars: Evolution - Stars: Individual: Constellation Name: BG Geminorum

Simbad objects: 1

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Number of rows : 1

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2026	#notes
1	V* BG Gem	RV*	06 03 30.8096716728	+27 41 50.618759172						~	10	0

Query : 2002AJ....124.1054K

Basic data :

V* BG Gem -- RV Tauri Variable

V* (2018AJ,AN,...), RV* (2003AstL), EB* (2020ApJS), * (Gaia), NIR (2MASS), IR (2MASSI), Opt (ATO)

06 03 30.8096716728 +27 41 50.618759172 (Optical) [ 0.0186 0.0159 90 ] A 2020yCat.1350....0G

06 00 21.9988072574 +27 41 59.107176029 [ 0.0186 0.0159 90 ]

183.0600778153012 +02.7719108011104 [ 0.0186 0.0159 90 ]

0.210 -0.385 [0.021 0.015 90] A 2020yCat.1350....0G

0.2057 [0.0197] A 2020yCat.1350....0G

G 12.831149 [0.013734] C 2020yCat.1350....0G

J 10.327 [0.022] C 2003yCat.2246....0C

H 9.599 [0.022] C 2003yCat.2246....0C

K 9.360 [0.018] C 2003yCat.2246....0C

g 14.183 [~] D 2020ApJS..249...18C

r 12.763 [~] D 2020ApJS..249...18C

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`2MASS J06033081+2741506`	`2MASSI J0603308+274150`	`ZTF J060330.81+274150.6`
`AN 336.1930`	`TIC 79963210`	`Gaia DR2 3430457002856349952`
`ATO J090.8783+27.6973`	*`V BG Gem`**	`Gaia DR3 3430457002856349952`

References (10 between 1850 and 2026) (Total 10)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

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2MASS J06033081+2741506 2MASSI J0603308+274150 V* BG Gem Gaia DR2 3430457002856349952 Gaia DR3 3430457002856349952

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