The dark matter halo shape of edge-on disk galaxies - II. Modelling the HI observations: methods

Free Access

Table 2:

Summary of previous observations of gas velocity dispersion of highly inclined galaxies.
Galaxies	i	Type	H I Velocity	Resolution		H I radius			Distance	Ref.
			dispersion	spectral	spatial
	$^{\circ }$			km s^-1	kpc	R₂₅	kpc	$\theta_{\rm maj}$	Mpc
NGC 4244	84.5^c	Scd	constant^d	5.2^a	0.17	630	11.0	2.0	3.6	Olling (1996)
ESO142-G24	90^b	Scd	constant^e	6.6^a	3.8	19.0	1.6	5.0	26.6	Kregel et al. (2004)
ESO157-G18	90^b	Scd	constant^e	6.6^a	2.6	11.1	1.3	4.3	18.1	Kregel et al. (2004)
ESO201-G22	90^b	Sc	constant^e	6.6^a	9.0	34.1	1.5	3.8	55.4	Kregel et al. (2004)
ESO240-G11	90^b	Sc	constant^e	6.6^a	1.7	41.5	1.4	24.2	38.1	Kregel et al. (2004)
ESO263-G15	90^b	Sc	constant^e	6.6^a	5.1	24.8	1.5	4.8	35.2	Kregel et al. (2004)
ESO269-G15	90^b	Sc	constant^e	6.6^a	7.5	19.9	1.0	2.7	46.7	Kregel et al. (2004)
ESO321-G10	90^b	Sa	constant^e	6.6^a	7.3	14.5	1.2	2.0	41.0	Kregel et al. (2004)
ESO416-G25	90^b	Sb	constant^e	6.6^a	17.7	36.7	1.6	2.1	67.0	Kregel et al. (2004)
ESO435-G14	90^b	Sc	constant^e	6.6^a	7.7	18.9	1.5	2.5	35.2	Kregel et al. (2004)
ESO435-G25	90^b	Sc	constant^e	6.6^a	2.2	36.1	1.2	16.3	32.4	Kregel et al. (2004)
ESO435-G50	90^b	Sc	constant^e	6.6^a	7.1	13.1	1.4	1.9	35.2	Kregel et al. (2004)
ESO446-G18	90^b	Sb	constant^e	6.66^a	12.2	31.1	1.3	2.5	64.1	Kregel et al. (2004)
ESO564-G27	90^b	Sc	constant^e	6.66^a	10.2	28.7	1.6	2.8	29.5	Kregel et al. (2004)
NGC 5170	90^b	Sc	constant^e	6.66^a	7.4	31.9	1.3	4.3	20.9	Kregel et al. (2004)

Notes. ^(a) Hanning smoothed.
^(b) From LEDA database.
^(c) The unwarped inner disk has an inclination of $i=84.5^{\circ}$ , outside of which there is a small warp to i=82.5 $\pm$ $1^{\circ}$ , before warping back to the plane of the inner disk at large radii (Olling 1996).
^(d) Direct measurement of the velocity dispersion of the broadening of the extreme velocity envelope of the XV map of an edge-on galaxy. Measurements corrected for instrumental broadening, projection and beam-smearing, via Olling's method (see Sect. 2.6).
^(e) Iterative envelope fitting of the XV map of an high-inclination galaxy integrated over the galaxy minor axis (Kregel et al. 2004). This method was unable to measure radial structure of the velocity dispersion, as the method did not include beam correction and the galaxies in the sample were observed with very large beams.

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.