| Aim: |
Compilation of galactic stellar sources observed
for OH maser emission in the transition at 1612, 1665, and
1667 MHz. Extension to H2O and SiO maser emission
is in progress. |
| Status: |
The database contains 12951 OH maser observations at frequencies
1612, 1665, and 1667 MHz selected from the
literature .
These observations belong to 6315
different objects. 2319 objects were detected, with N=1979
showing the classical double-peak profile. Further
details on the contents of the database are found
under
Statistics.
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| |
Four each source selected, links to
interferometric follow-up observations
or monitoring programs are provided. Currently 148
interferometric observations from 15 papers, and
46 monitoring observations from 5 papers are included.
|
| Completeness: |
1612 MHz OH masers: Search of the literature started
with the contents of the last catalogue published in 1989 by
Te Lintel Hekkert et al.
The additional literature
search covers the years 1984 – 2009, and part of 2010.
The database is
considered to be (almost) complete for detected stars.
The database contains
no non-detections published prior to 1984.
|
| |
1665 and 1667 MHz OH Masers: The literature search
covers the years 1984 – 2009, and part of 2010.
The database contains
no measurements published prior to 1984.
The last catalogue including
these transitions is by
Engels (1979).
|
| Information delivered: |
1612 MHz OH masers: Given are the peak fluxes and velocities
of the blue- and the red-shifted peak. Stellar radial velocities
v(rad) and expansion velocities v(exp) of the circumstellar
shell were calculated from v(rad) = 0.5 * {v(red) + v(blue)}
and v(exp) = 0.5 * {v(red) - v(blue)}, if not listed in the
original paper.
|
| |
1665 and 1667 MHz OH masers: In case of profiles with multiple
peaks, v(rad) and v(exp) were calculated from the outermost
peaks listed. v(blue), f(blue) and v(red), f(red) were filled
with the two strongest peaks listed. |
| Collaborators: |
Felix Bunzel, Dieter Engels, Berit Heidmann |
| Citation: |
Engels, D., Bunzel, F., Heidmann, B., 2010, Database of Circumstellar
Masers v2.0 |
| Disclaimer: |
Care has been taken to transfer the information contained
in the literature as correctly as possible. Tables available
only on paper were scanned and digitized. This process
most probably was not error free. Deliberate modifications
of the input data are described on the individual pages
describing the literature sources
(see References ).
The use of this database is on your own risk.
If in doubt, go back to the original literature.
|
| Acknowledgements: |
This work is supported by the Deutsche Forschungsgemeinschaft
under grant En 176/33-1
|