Volume 383, Number 1, FebruaryIII 2002
|Page(s)||244 - 266|
|Published online||15 February 2002|
Long-term study of water maser emission associated with young stellar objects
I. The database
Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 Firenze, Italy
2 Istituto di Radioastronomia CNR, Via Gobetti 101, 40129 Bologna, Italy
3 C.A.I.S.M.I.-CNR, Largo E. Fermi 5, 50125 Firenze, Italy
Corresponding author: R. Valdettaro, firstname.lastname@example.org
Accepted: 15 November 2001
We present the results of more than 10 years of monitoring of the water vapor maser emission in 14 star forming regions obtained with the Medicina 32-m radiotelescope. The sample of objects covers a large range of luminosities of the associated FIR sources. In order to present in a compact and representative way the large amount of data available, we give for each source: a time-velocity-flux density plot, the time dependent integrated flux, the lower and upper envelopes of the maser emission, the frequency of the maser occurrence as a function of velocity, and the mean velocity averaged over the observing period. A brief morphological description of the environment of the maser source is also given. The present data form the basis for a discussion of the main properties of the water vapor maser emission to be presented in a forthcoming paper.
Key words: masers / radio lines: interstellar / ISM: molecules
© ESO, 2002
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