2003A&A...403.1089G

Query : 2003A&A...403.1089G

2003A&A...403.1089G - Astronomy and Astrophysics, volume 4031089-1094 (2003/6-1)

The 2003 eclipse of EE Cep is coming. A review of past eclipses.

GRACZYK D., MIKOLAJEWSKI M., TOMOV T., KOLEV D. and ILIEV I.

Abstract (from CDS):

EE Cep is an eclipsing binary with a period of 5.6 years. The next eclipse will occur soon, in May-June 2003, and all available past eclipses were collected and briefly analysed. EE Cep shows very large changes of the shape and the depth of minima during different eclipses, however it is possible to single out some persistent features. The analysis suggests that the eclipsing body should be a long object surrounded by an extended semi-transparent envelope. As an explanation, a model of a precessing optically thick disc, inclined to the plane of the binary orbit, is invoked. The changes of its spatial orientation, which is defined by the inclination of the disc and the tilt, induced most probably by precession of the disc spin axis with a period of about 50 years, produce strange photometric behaviour of this star. The Hα emission, and possibly the NaI absorptions, show significant changes during several months outside of the eclipse phase.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - stars: individual: EE Cep

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	BD+55 2693	Be*	22 09 22.7543431920	+55 45 24.256674360	10.88	11.1	10.9			B5:nev	88	0

Query : 2003A&A...403.1089G

Basic data :

BD+55 2693 -- Be Star

EB* (), * (BD,ALS,...), Em* (EM*,HBHA,...), V* (V*,AAVSO), Be* (1982IAUS), NIR (2MASS), Opt (LAMOST)

22 09 22.7543431920 +55 45 24.256674360 (Optical) [ 0.0150 0.0150 90 ] A 2020yCat.1350....0G

22 07 34.6768346998 +55 30 38.675230973 [ 0.0150 0.0150 90 ]

101.4897777328560 -00.2170773345234 [ 0.0150 0.0150 90 ]

-2.530 -2.532 [0.019 0.018 90] A 2020yCat.1350....0G

0.4382 [0.0175] A 2020yCat.1350....0G

B5:nev D ~

U 10.88 [~] D 1982IAUS...98..261J

B 11.1 [~] E ~

V 10.9 [~] E ~

G 10.638212 [0.002806] C 2020yCat.1350....0G

J 9.601 [0.029] C 2003yCat.2246....0C

H 9.219 [0.030] C 2003yCat.2246....0C

K 8.555 [0.023] C 2003yCat.2246....0C

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`BD+55 2693`	`LAMOST J220922.75+554524.2`	`UCAC3 292-178067`	`Gaia DR3 2197941958898810240`
`ALS 12159`	`LS III +55 24`	*`V EE Cep`**	`Gaia DR1 2197941954587810688`
*`EM CDS 1305`**	`2MASS J22092274+5545242`	`[BBB73] 74`	`Gaia DR2 2197941958898810240`
`GEN# +0.05502693`	`TIC 329020872`	`[JE82] 1110`
`GSC 03973-00715`	`TYC 3973-715-1`	`[KW97] 61-42`
`HBHA 5704-39`	`UBV M 3940`	`AAVSO 2205+55`

References (88 between 1850 and 2026) (Total 88)
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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`BD+55 2693`	`ALS 12159`	`GSC 03973-00715`	`LS III +55 24`	`2MASS J22092274+5545242`
`TYC 3973-715-1`	`UCAC3 292-178067`	*`V EE Cep`**	`Gaia DR3 2197941958898810240`	`Gaia DR1 2197941954587810688`
`Gaia DR2 2197941958898810240`

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