1995A&A...297..364D

Query : 1995A&A...297..364D

1995A&A...297..364D - Astronomy and Astrophysics, volume 297364-368 (1995/5-2)

The light and period variation of CV Cygni.

DEMIRCAN O., MUEYESSEROGLU Z., SELAM S.O., DERMAN E. and AKALIN A.

Abstract (from CDS):

The U, B and V observations confirmed, once more, after Vetesnik & Perek (1965, BAC 42, 119) that CV Cygni is an eclipsing binary of W UMa type. Due to the variable depth (up to 0.1 magnitude) of one of the minima, the system shifts from A to W-type (or vice versa). The (O-C) diagram of all available times of minima confirms the continous period decrease with a rate dP/dt≃4.44x10^–7day/yr. The relatively large orbital period (P≃0.98day), the shape of the light and color curves, and the position of the system in the color-period diagram indicate that CV Cyg is an interesting highly evolved contact or near-contact binary which is rapidly evolving into deeper contact through the angular momentum loss from the system.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: CV Cyg - binaries: eclipsing

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* CV Cyg	EB*	19 54 20.9059968792	+38 02 49.973133984		11.282	10.85	10.60	10.320	F8III	62	1

Query : 1995A&A...297..364D

Basic data :

V* CV Cyg -- Eclipsing Binary

* (TYC,CSI,...), V* (AN,HAT,...), EB* (2004AJ), MIR (WISEA,WISE), NIR (2MASS)

19 54 20.9059968792 +38 02 49.973133984 (Optical) [ 0.0083 0.0087 90 ] A 2020yCat.1350....0G

19 52 33.0163268052 +37 54 53.755025288 [ 0.0083 0.0087 90 ]

073.3634647966653 +05.2238437450004 [ 0.0083 0.0087 90 ]

2.106 3.123 [0.011 0.011 90] A 2020yCat.1350....0G

V(km/s) 80.0 [~] / z(~) 0.000267 [~] / cz 80.01 [~] E 1953GCRV..C......0W

1.427 [0.01] A 2020yCat.1350....0G

F8III C ~

B 11.282 [~] D 2012AJ....143...99T

V 10.85 [0.03] C 2012A&A...548A..79A

R 10.60 [0.02] D 2012yCat.1322....0Z

G 10.840095 [0.007652] C 2020yCat.1350....0G

I 10.320 [~] D 2004AJ....128.1761H

J 9.784 [0.021] C 2003yCat.2246....0C

H 9.615 [0.022] C 2003yCat.2246....0C

K 9.549 [0.018] C 2003yCat.2246....0C

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`TYC 3137-824-2`	`HAT 199-06499`	`TYC 3137-824-1`	`WISE J195420.91+380250.0`
`AN 8.1926`	`KIC 2899573`	`UCAC4 641-081119`	`Gaia DR3 2072141954494520192`
`CSI+37-19525`	`LF 3b +37 15`	*`V CV Cyg`**	`Gaia DR1 2072141950179923328`
`GCRV 12259`	`2MASS J19542090+3802499`	`WEB 17235`	`Gaia DR2 2072141954494520192`
`GSC 03137-00824`	`TIC 170940846`	`WISEA J195420.90+380250.0`

References (62 between 1850 and 2026) (Total 62)
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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`TYC 3137-824-2`	`GSC 03137-00824`	`KIC 2899573`	`LF 3b +37 15`	`2MASS J19542090+3802499`
`TYC 3137-824-1`	`UCAC4 641-081119`	*`V CV Cyg`**	`WISEA J195420.90+380250.0`	`WISE J195420.91+380250.0`
`Gaia DR3 2072141954494520192`	`Gaia DR1 2072141950179923328`	`Gaia DR2 2072141954494520192`

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