2022RNAAS...6..221G

Query : 2022RNAAS...6..221G

2022RNAAS...6..221G - Research Notes of the AAS, 6, 221 (2022/October-0)

The Intermediate Polar FO Aquarii Has Not Been the Same Since Recovering from a Series of Low States.

GARNAVICH P., LITTLEFIELD C., BOYLE R.S. and KENNEDY M.

Abstract (from CDS):

FO Aqr is a bright intermediate polar that has long displayed large amplitude photometric variations corresponding to the 20.9 minutes spin period of its white dwarf. Between 2016 and 2020, the system suffered a series of unprecedented low-states, but recent data shows that it has now recovered to its normal optical luminosity. We compare the light curves obtained by K2/Kepler in 2014 with photometry from the TESS mission obtained in 2021. We find that the spin pulse that had been the dominant feature of the light curve in 2014 is now weak over the second half of the binary orbit and that a beat pulse is enhanced in the TESS photometry. Variations at approximately twice the spin frequency are now seen over the second half of the orbit. These photometric properties may be the new normal for FO Aqr now that its white dwarf has begun to spin down.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Cataclysmic variable stars - DQ Herculis stars - White dwarf stars - Magnetic variable stars

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* FO Aqr CV* 22 17 55.3796835600 -08 21 03.754995948   13.533 13.445 13.414   ~ 378 0

Query : 2022RNAAS...6..221G

Basic data :
V* FO Aqr -- Cataclysmic Binary
Other object types: otypes_help 		X (2022MNRAS,2E,...), * (BPS,EPIC,...), CV* (2013ApJS), V* (V*,AAVSO), blu (2019A&A), SB* (SBC9), HS? (2019A&A), NIR (2MASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		22 17 55.3796835600 -08 21 03.754995948 (Optical) [ 0.0269 0.0191 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		22 15 17.2573615265 -08 36 06.017098524 [ 0.0269 0.0191 90 ]
Gal coord. (ep=J2000) : 		053.0002004729722 -49.1576051429550 [ 0.0269 0.0191 90 ]
Proper motions mas/yr : 		2.276 4.512 [0.036 0.025 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -18.0 [~] / z(~) -0.000060 [~] / cz -18.00 [~]
   E 1995A&AS..114..269D
Parallaxes (mas): 		1.8416 [0.0281] A 2020yCat.1350....0G
Fluxes (12) :
B 13.533 [0.04] D 2012yCat.1322....0Z
V 13.445 [0.04] D 2012yCat.1322....0Z
R 13.414 [0.15] E 2012yCat.1322....0Z
G 13.5232 [0.0145] C 2018yCat.1345....0G
J 12.872 [0.023] C 2003yCat.2246....0C
H 12.745 [0.025] C 2003yCat.2246....0C
K 12.508 [0.024] C 2003yCat.2246....0C
u (AB) 14.171 [0.005] C 2009ApJS..182..543A
g 13.417 [0.20] D 2012yCat.1322....0Z
r 13.491 [0.10] D 2012yCat.1322....0Z
i 14.113 [0.90] D 2012yCat.1322....0Z
z (AB) 13.657 [0.005] C 2009ApJS..182..543A
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Identifiers (26) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

2E 4588 PBC J2217.9-0820 TIC 38305527 [FS2003] 1154
BPS CS 22886-0021 PB 7131 UCAC4 409-138163 [KRL2007b] 394
2E 2215.3-0835 1RXS J221753.9-082115 uvby98 601107131 V AAVSO 2212-08
EPIC 206292760 SBC9 1365 V* FO Aqr Gaia DR3 2616360833953395456
H 2215-086 SDSS J221755.38-082103.7 WEB 19761 Gaia DR2 2616360833953395456
2MASS J22175538-0821038 SRGA J221754.8-082104 2XMM J221755.3-082103
2MAXI J2218-083 SWIFT J2217.5-0812 XSS J22178-0822

References (378 between 1850 and 2026) (Total 378)
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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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 4    Var : 1    Plx : 2    PM : 2   

   

Observing logs
IUE : 53    XMM : 2   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* FO Aqr

Link by name to the catalogue in VizieR :

2E 4588 2MASS J22175538-0821038 PB 7131 1RXS J221753.9-082115 SDSS J221755.38-082103.7
UCAC4 409-138163 uvby98 601107131 V V* FO Aqr Gaia DR3 2616360833953395456 Gaia DR2 2616360833953395456

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