2020JAVSO..48..193M

Query : 2020JAVSO..48..193M

2020JAVSO..48..193M - J. Am. Assoc. Variable star obs., 48, 193 (2020/June-0)

A Photometric Study of the Contact Binary GR Piscium.

MICHAELS E.J.

Abstract (from CDS):

High-quality CCD photometric light curves of the eclipsing binary GR Psc are presented. The new multicolor light curves display total eclipses which were analyzed using the Wilson-Devinney program. The light curve solution describes the system as a contact configuration with a mass ratio of M2/ M1 = 0.431, a fill-out of f = 47%, and a small temperature difference between the component stars of Delta T = 51 K. A period study revealed this A-type contact binary has a decreasing orbital period. A small asymmetry was found in the light curves, indicating an elevated temperature in the contact region of the primary star. This hot region is likely the consequence of mass and energy exchange through the connecting neck of the common envelope.

Journal keyword(s): binaries: close - binaries: eclipsing - stars: individual (GR Psc) - techniques: photometric

Status at CDS : Objects in title, abstract, text, figures, and all or part of small table(s) being processed in SIMBAD.

Simbad objects: 1

View the references in ADS

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* GR Psc	EB*	01 09 31.9211381400	+22 39 19.393829172		11.46	11.06	11.023	10.773	~	11	0

Query : 2020JAVSO..48..193M

Basic data :

V* GR Psc -- Eclipsing Binary

EB* (2006AJ,[GGM2006]), * (TYC,NSVS,...), V* (ASAS,V*), NIR (2MASS)

01 09 31.9211381400 +22 39 19.393829172 (Optical) [ 0.0286 0.0176 90 ] A 2020yCat.1350....0G

01 06 50.0195393639 +22 23 21.644618213 [ 0.0286 0.0176 90 ]

128.3858680460148 -40.0246700410084 [ 0.0286 0.0176 90 ]

6.537 -7.562 [0.031 0.021 90] A 2020yCat.1350....0G

1.8 [0.0334] A 2020yCat.1350....0G

B 11.46 [0.08] D 2000A&A...355L..27H

V 11.06 [0.09] D 2000A&A...355L..27H

R 11.023 [~] D 2012AJ....143...99T

G 11.375738 [0.013819] C 2020yCat.1350....0G

I 10.773 [~] D 2012AJ....143...99T

J 10.303 [0.022] C 2003yCat.2246....0C

H 10.130 [0.022] C 2003yCat.2246....0C

K 10.077 [0.020] C 2003yCat.2246....0C

Overlay

points in this preview

2MASS DSS

All

(CDSPortal)

Send to

An access of full data is available using the icon Vizier near the identifier of the catalogue

`TYC 1747-967-1`	`2MASS J01093192+2239194`	*`V GR Psc`**	`Gaia DR3 2791717889018380160`
`ASAS J010932+2239.3`	`NSVS 6406901`	`[GGM2006] 9179857`	`Gaia DR1 2791717884722733184`
`CRTS J010931.8+223919`	`TIC 243223922`	`Gaia DR2 2791717889018380160`

References (11 between 1850 and 2026) (Total 11)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).

Follow new references on this object

Collections of Measurements

External archives :

Link by name to the catalogue in VizieR :

`TYC 1747-967-1`	`2MASS J01093192+2239194`	*`V GR Psc`**	`Gaia DR2 2791717889018380160`	`Gaia DR3 2791717889018380160`
`Gaia DR1 2791717884722733184`

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2020JAVSO..48..193M and select 'bookmark this link' or equivalent in the popup menu