2003A&A...405..969G

Query : 2003A&A...405..969G

2003A&A...405..969G - Astronomy and Astrophysics, volume 405969-973 (2003/7-3)

The line-of-sight warp of the spiral galaxy ESO 123-G23.

GENTILE G., FRATERNALI F., KLEIN U. and SALUCCI P.

Abstract (from CDS):

We present 3-D modelling of the distribution and kinematics of the neutral hydrogen in the spiral galaxy ESO 123-G23. The optical appearance of this galaxy is an almost perfectly edge-on disk, while the neutral hydrogen is found to extend vertically out to about 15-kpc on either side of the galactic plane. The HI layer and the major features of the HI data cube can be successfully explained by a model dominated by a strong (about 30°) line-of-sight warp. Other models were tried, including a flare model and a two-component model, but they clearly do not reproduce the data. This is the first unambiguous detection of a galactic warp that has the maximum deviation from the central plane almost along the line-of-sight. No evidence for the presence of any companion galaxy is found in the HI data cube. Line-of-sight warps in edge-on galaxies are probably frequent, but escape detection as they are too weak. Moreover they may easily be mistaken as flares or ``thick disks''. A 3-D modelling of the HI layer as the one presented here is needed in order to distinguish between these possibilities.

Abstract Copyright: ∼

Journal keyword(s): galaxies: individual: ESO 123-G23 - galaxies: kinematics and dynamics - 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	ESO 123-23	EmG	07 44 38.910	-58 09 13.18		14.97		13.75	14.0	~	51	0

Query : 2003A&A...405..969G

Basic data :

ESO 123-23 -- Emission-line galaxy

G (2016A&A,ESO,...), GiG (2007ApJ,[CHM2007]), IR (IRAS,PSCz), EmG (2022ApJS), AG? (2020MNRAS), HI (HIPASS)

07 44 38.910 -58 09 13.18 (Infrared) [ ] C 2006AJ....131.1163S

07 43 41.613 -58 01 53.11 [ ]

270.603906 -16.217912 [ ]

V(km/s) 2910.2 [~] / z(emission) 0.009755 [~] / cz 2924.46 [~] (Rad) C 2004MNRAS.350.1195M

5.7 D 1989ESOLV.C......0L

1.307 0.209 105 (NIR) C 2006AJ....131.1163S

B 14.97 [~] C 1989ESOLV.C......0L

R 13.75 [~] C 1989ESOLV.C......0L

I 14.0 [~] D 2005MNRAS.361...34D

J 11.553 [0.029] C 2006AJ....131.1163S

H 10.977 [0.040] C 2006AJ....131.1163S

K 10.460 [0.041] C 2006AJ....131.1163S

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`ESO 123-23`	`HIPASS J0744-58`	`2MFGC 6122`	`[CHM2007] LDC 520 J074438.91-5809131`
`6dFGS gJ074438.9-580913`	`IRAS 07436-5801`	`PSCz Q07436-5801`
`ESO-LV 123-0230`	`LEDA 21690`	`RFGC 1250`
`FGCE 674`	`2MASX J07443891-5809131`	`SGC 074341-5801.9`

References (51 between 1850 and 2026) (Total 51)
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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External archives :

Data at NED - NASA/IPAC Extragalactic Database : ESO 123-23

Link by name to the catalogue in VizieR :

ESO-LV 123-0230 HIPASS J0744-58 IRAS 07436-5801 2MASX J07443891-5809131 RFGC 1250

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