In this paper we present a database of up to 20 years of monitoring of a
sample of 43 masers within star-forming regions. The sample covers a large
range of luminosities of the associated IRAS source and is representative of
the entire population of water masers of this type. We give for each source:
plots of the calibrated spectra; the velocity-time-flux density plot; the light
curve of the integrated flux; the lower and upper envelopes of the maser
emission; the mean spectrum; the rate of maser emission as a function of
velocity.
Figures for just one source are given in the text for representative purposes.
Figures for all the sources are given in electronic form in the on-line
appendix. Both the printed paper and the on-line material can be downloaded
from this page (see below). Individual figures (including some that are not
in the on-line appendix) can be downloaded for each source, using the table
at the bottom of this page.
The printed version alone is also available at arXiv:0710.0790 (astro-ph)
Most of the figures are
presented in the on-line appendix . In this web page we present the
same figures and
two additional figures per source not shown in the on-line
appendix.
Each plot is in gzipped-postscript format and can be downloaded from
the links
included in this page. There are eight kinds of plots:
Fig. Ax.a: All spectra of a source
with a linear-autoscaled
flux density scale, determined by the maximum value found during our
monitoring. Time runs from top to bottom and from left to right. In
each spectrum the actual date of observation is given in the top left
corner, and the number of days elapsed since the first observation of
the source in the top right corner. The velocity scale is the same for
all spectra.
Fig. Ax.a1: (Not shown in the on-line appendix)
Same as Fig. Ax.a, but with a linear-fixed flux density scale.
Fig. Ax.a2: (Not shown in the on-line appendix) Same
as Fig. Ax.a, but with a logarithmic-fixed flux density scale,
scaled to the maximum value found during the patrol.
Fig. Ax.b: Velocity-time-flux
density full plots. The vertical solid line
indicates the velocity of the associated thermal molecular gas. The
vertical solid line indicates the velocity of the associated thermal molecular
gas. The flux density scale is shown by the bar on the right. In this
bar the three lines give the flux density of the drawn contours. The
area in black indicates that the corresponding velocity range was not
observed.
Fig. Ax.c: Velocity-time-flux density zoomed plots. The vertical solid line
indicates the velocity of the associated thermal molecular gas. The
vertical dashed line marks the mean velocity derived from the histogram
of the rate--of--occurrence. The flux density scale is shown by
the bar on the right. In this bar the three lines give the flux density
of the drawn contours. The area in black indicates that the
corresponding velocity range was not observed.
Fig. Ax.d: The integral of the flux
density over the observed velocity range as a function of time.
Fig. Ax.e: The upper (red) and
lower (blue) envelopes and the mean spectra (green) measured
during our monitoring. The vertical solid line marks the velocity of
the
associated thermal molecular gas. The vertical dashed line marks
the mean velocity derived from the histogram of the rate-of-occurrence.
Fig. Ax.f: Rate-of-occurrence plots.
The scale to the right refers to the dotted histogram, the scale to the
left to the solid line histogram. The vertical solid line marks
the velocity of the associated thermal molecular gas.
All plots (gzipped-postscript files)
can be downloaded from the
list of sources below (coordinates are J2000).