2012MNRAS.427.3427M

Query : 2012MNRAS.427.3427M

2012MNRAS.427.3427M - Mon. Not. R. Astron. Soc., 427, 3427-3434 (2012/December-3)

How to recover both velocity components in discs of barred galaxies with integral-field spectroscopy.

MACIEJEWSKI W., EMSELLEM E. and KRAJNOVIC D.

Abstract (from CDS):

We present a new method that derives both velocity components in the equatorial plane of a barred stellar disc from the observed line-of-sight velocity, assuming the geometry of a thin disc. The method can be applied to large departures from circular motion, and does not require multipole decomposition. It is based on assumptions that the bar is close to steady state (i.e. does not evolve fast) and that both morphology and kinematics are symmetrical with respect to the major axis of the bar. We derive the equations used in the method and analyse the effect of observational errors on the inferred velocity fields. We show that this method produces meaningful results via a simple schematic model. We also apply the method on integral-field data of NGC 936, for which we recover both velocity components in the disc. Knowing both velocity components in the disc, i.e. the non-observable transverse velocity in addition to the line-of-sight velocity, puts additional constraints on dynamical models and allows for new ways of determining parameters that are crucial in characterizing galaxies.

Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): methods: data analysis - techniques: imaging spectroscopy - galaxies: individual: NGC 936 - galaxies: kinematics and dynamics - galaxies: spiral - galaxies: structure

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 NGC 936 EmG 02 27 37.462 -01 09 22.61   11.1   9.98 10.7 ~ 374 0

Query : 2012MNRAS.427.3427M

Basic data :
NGC 936 -- Emission-line galaxy
Other object types: otypes_help 		GiP (), G (2014MNRAS,6dFGS,...), Rad (FIRST,NVSS), EmG (2022ApJS), GiC (GIN), GiG ([CHM2007]), AG? (2020MNRAS), X (2E), HI (HIPASS), Opt (SDSS)
ICRS coord. (ep=J2000) : 		02 27 37.462 -01 09 22.61 (Infrared) [ ] C 2006AJ....131.1163S
FK4 coord. (ep=B1950 eq=1950) : 		02 25 04.594 -01 22 47.41 [ ]
Gal coord. (ep=J2000) : 		168.574012 -55.263964 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 1225.5 [~] / z(emission) 0.004096 [~] / cz 1228.02 [~]
   (Rad) C 2004MNRAS.350.1195M
Morphological type: 		SB_a C 2019MNRAS.488..590B
Angular size (arcmin): 		4.84834 3.74001 128 (Opt) B 2023ApJS..269....3M
Fluxes (11) :
B 11.1 [~] D 2005MNRAS.361...34D
R 9.98 [~] D 2009MNRAS.399..683J
I 10.7 [~] D 2005MNRAS.361...34D
J 7.835 [0.018] C 2006AJ....131.1163S
H 7.140 [0.018] C 2006AJ....131.1163S
K 6.913 [0.025] C 2006AJ....131.1163S
u (AB) 13.249 [0.002] C 2011yCat.2306....0A
g (AB) 10.6360 [0.0011] B 2023ApJS..269....3M
r (AB) 9.8259 [0.0011] B 2023ApJS..269....3M
i (AB) 10.331 [0.001] C 2009ApJS..182..543A
z (AB) 9.2151 [0.0014] B 2023ApJS..269....3M
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 6
: 1 		: 11 Display criteria :

Identifiers (19) :
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NGC 936 GIN 774 NVSS J022737-010934 Z 388-18
6dFGS gJ022737.5-010922 HIPASS J0227-01 SDSS J022737.44-010921.6 Z 0225.1-0123
2E 572 LEDA 9359 SDSS J022737.46-010921.6 [CHM2007] HDC 141 J022737.46-0109226
2E 0225.0-0122 2MASX J02273746-0109226 UGC 1929 [CHM2007] LDC 174 J022737.46-0109226
FIRST J022737.4-010921 MCG+00-07-017 UZC J022737.5-010919

References (374 between 1850 and 2026) (Total 374)
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 : 16    Distance : 6   

   

Observing logs
IUE : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 936

Link by name to the catalogue in VizieR :

NGC 936 2E 572 FIRST J022737.4-010921 HIPASS J0227-01 2MASX J02273746-0109226
NVSS J022737-010934 SDSS J022737.44-010921.6 SDSS J022737.46-010921.6 UGC 1929

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