2015MNRAS.446..622Q

Query : 2015MNRAS.446..622Q

2015MNRAS.446..622Q - Mon. Not. R. Astron. Soc., 446, 622-626 (2015/January-1)

Kelvin-Helmholtz instability of counter-rotating discs.

QUACH D., DYDA S. and LOVELACE R.V.E.

Abstract (from CDS):

Observations of galaxies and models of accreting systems point to the occurrence of counter-rotating discs where the inner part of the disc (r < r0) is corotating and the outer part is counter-rotating. This work analyses the linear stability of radially separated co- and counter-rotating thin discs. The strong instability found is the supersonic Kelvin-Helmholtz instability. The growth rates are of the order of or larger than the angular rotation rate at the interface. The instability is absent if there is no vertical dependence of the perturbation. That is, the instability is essentially three dimensional. The non-linear evolution of the instability is predicted to lead to a mixing of the two components, strong heating of the mixed gas, and vertical expansion of the gas, and annihilation of the angular momenta of the two components. As a result, the heated gas will free-fall towards the disc's centre over the surface of the inner disc.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): accretion, accretion discs - instabilities - galaxies: evolution - galaxies: formation

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 M 64 SyG 12 56 43.696 +21 40 57.57   9.36 8.52     ~ 1010 2

Query : 2015MNRAS.446..622Q

Basic data :
M 64 -- Seyfert Galaxy
Other object types: otypes_help 		G (2014AJ,ADBS,...), Rad (BWE,7C,...), AGN ([GCS2005],[VV2000c],...), X (2E,RX,...), IR (IRAS,ISOSS,...), SyG (2010A&A), GiC (CAIRNS), AG? (2020MNRAS), HI (HIPASS)
ICRS coord. (ep=J2000) : 		12 56 43.696 +21 40 57.57 (Infrared) [ ] C 2006AJ....131.1163S
FK4 coord. (ep=B1950 eq=1950) : 		12 54 16.350 +21 57 10.43 [ ]
Gal coord. (ep=J2000) : 		315.681974 +84.422965 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 438 [3] / z(emission) 0.001462 [0.000010] / cz 438.32 [3.00]
   (Rad) C 2022ApJS..261...21Y
Morphological type: 		SABa C 2015ApJS..217...27A
Angular size (arcmin): 		10.9934 6.22445 113 (Opt) B 2023ApJS..269....3M
Fluxes (8) :
B 9.36 [0.10] D 2007ApJS..173..185G
V 8.52 [0.10] D 2007ApJS..173..185G
J 6.267 [0.016] C 2006AJ....131.1163S
H 5.582 [0.016] C 2006AJ....131.1163S
K 5.330 [0.017] C 2006AJ....131.1163S
g (AB) 8.7899 [0.0006] B 2023ApJS..269....3M
r (AB) 8.0701 [0.0006] B 2023ApJS..269....3M
z (AB) 7.4908 [0.0006] B 2023ApJS..269....3M
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2
: 90 		: 6407 Display criteria :

Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

M 64 IRAS 12542+2157 RX J125643+21412 [RS2000] 201
ADBS J125711+2135 IRAS 12543+2157 RX J1256.7+2141 [SLK2004] 755
BWE 1254+2157 ISOSS J12567+2140 1RXS J125643.5+214106 [VDD93] 176
7C 125416.4+215657 K73 559 UGC 8062 [VV2000c] J125643.9+214100
CAIRNS J125643.76+214051.9 LEDA 44182 UZC J125644.3+214059 [VV2003c] J125643.9+214100
2E 2907 2MASX J12564369+2140575 Z 130-1 [VV2006c] J125643.9+214100
2E 1254.2+2157 MCG+04-31-001 Z 1254.2+2157 [VV2010c] J125643.9+214100
EVCC 2248 NAME Black Eye Galaxy [CAB95] IRAS F12542+2157 [VV98c] J125644.3+214105
GB6 B1254+2157 NAME Evil Eye Galaxy [DC78] UGC 8062 EQ 1254+22
87GB 125417.4+215711 NGC 4826 [DSB94] 137
HIPASS J1256+21 NVSS J125643+214100 [GCS2005] J125643.63+214059.1
IRAS F12542+2157 PSCz P12542+2157 [M98c] 125416.9+215718

References (1010 between 1850 and 2026) (Total 1010)
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 : 14    Distance : 18   

   

Observing logs
Herschel : 16    ISO : 5   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : M 64

Link by name to the catalogue in VizieR :

BWE 1254+2157 2E 2907 HIPASS J1256+21 IRAS F12542+2157 IRAS 12542+2157
IRAS 12543+2157 K73 559 2MASX J12564369+2140575 NGC 4826 NVSS J125643+214100
1RXS J125643.5+214106 UGC 8062

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