All Figures

$\begin{figure} \par\includegraphics[width=13.5cm,clip]{ms3606_fig1.eps}\end{figure}$ Figure 1: The sky coverage of the selected sample of 2MASS LSB galaxies is illustrated by the distribution of the objects which were observed in H I. The plot is in equatorial coordinates; the dotted line indicates the Galactic plane and the dashed lines the $-2^{\circ }$ to 38 $^{\circ }$ declination range covered by the Arecibo radio telescope. All sources have declinations between $-39^{\circ }$ and +60 $^{\circ }$ . The upper panel is for the Large sources ( r_K₂₀>20''), the lower for the Small sources ( 20''>r_K₂₀>10''). Dots indicate galaxies detected in H I, crosses undetected objects.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=11.7cm,clip]{ms3606_fig3.eps}\end{figure}$ Figure 3: Comparison between the normalized distributions of several measures of infrared surface brightness in the $K_{\rm s}$ -band for the three sub-samples of 2MASS LSB galaxies (Large/Small/Faint) with three other samples of galaxies, one of optically selected LSBs and two of HSB galaxies from the NGC, as described in Sect. 4.1. The plotted parameters, which are described and discussed further in Sect. 4.2, are: $\mu _{K5}$ is the mean surface brightness measured within a circle of 5'' radius at the centre of each galaxy, $\mu _0$ is the highest surface brightness measured at the centre of the galaxy, and $\mu _{K_{21}}$ and $\mu _{K_{21}} (i=0)$ are, respectively, the average surface brightness measured within the 21 mag arcsec^-2 isophotal contour in the $K_{\rm s}$ -band and this value corrected to face-on $(i=0^{\circ })$ .
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=11.8cm,clip]{ms3606_fig4.eps}\end{figure}$ Figure 4: As in Fig. 3, for a number of other infrared photometric parameters: r_K₂₀ is the major-axis radius at the 20 mag arcsec^-2 isophotal level in the $K_{\rm s}$ band, K₂₀ is the total magnitude within the 20 mag arcsec^-2 elliptical isophote in the $K_{\rm s}$ band, b/a is the minor-to-major axis ratio determined from an ellipse fit to the co-addition of the J-, H-, and $K_{\rm s}$ -band images, and (J-K)₂₀ is the difference between the J- and $K_{\rm s}$ -band magnitudes measured within the $K_{\rm s}=20$ mag arcsec^-2 elliptical isophote; note that the left half of the NGC S and NGC L curves overlap in the bottom panel. See Sect. 4.3 for further details on these parameters.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=13cm,clip]{ms3606_fig5.eps}\end{figure}$ Figure 5: As in Fig. 3 for a number of optical and optical-infrared colours, based on total corrected extrapolated magnitudes from 2MASS measured in the $K_{\rm s}$ band and from LEDA measured in the U, B, V and I bands. See Sect. 4.4 for a discussion of the plotted parameters.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.4cm,clip]{ms3606_fig2a.ps}\end{figure}$ Figure 2: a. 2MASS images of the selected LCSB sources: J-band greyscale images with superimposed $K_{\rm s}$ -band contours. The size of each image (in arcsec) is indicated in its bottom right corner.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.4cm,clip]{ms3606_fig2b.ps} \end{figure}$ Figure 2: continued.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{ms3606_fig2c.ps} \end{figure}$ Figure 2: continued.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=16.7cm,clip]{ms3606_fig2d.ps} \end{figure}$ Figure 2: continued.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=13cm,clip]{ms3606_fig5.eps}\end{figure}$	Figure 5: As in Fig. 3 for a number of optical and optical-infrared colours, based on total corrected extrapolated magnitudes from 2MASS measured in the $K_{\rm s}$ band and from LEDA measured in the U, B, V and I bands. See Sect. 4.4 for a discussion of the plotted parameters.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=16.4cm,clip]{ms3606_fig2a.ps}\end{figure}$	Figure 2: a. 2MASS images of the selected LCSB sources: J-band greyscale images with superimposed $K_{\rm s}$ -band contours. The size of each image (in arcsec) is indicated in its bottom right corner.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=16.4cm,clip]{ms3606_fig2b.ps} \end{figure}$	Figure 2: continued.
Open with DEXTER