Jean-Claude already mentioned the new Isochrone and CMD
plots.
I will try to guarantee the high quality of WEBDA in the future.
Jean-Claude did a great job which is deeply appreciated by
the community. And I am certain that we will see a lot
of forthcoming papers by Jean-Claude in the near future.
If you still miss some useful tools or features, please
contact me. I would like also to recall that the next steps should
be the implementation of clusters in the
Magellanic Clouds
.
2005 September 26
The database has been transferred to the Institute of Astronomy of the University of Vienna.
From now on, Dr Ernst Paunzen and collaborators will
develop and maintain WEBDA. The new URL is https://webda.physics.muni.cz/
Most of the interface is identical, however
new facilities have already been developed by Dr Paunzen:
- the possibility to plot isochrones over colour-magnitude diagrams. Try on NGC 2244
- the identifications of the red giants and peculiar objects (Am, Ap, Be) in the CMDs.
The maintenance of the database takes more and more time. It would be very useful if the open-cluster community could help the Vienna group
- by providing new data and table directly to Ernst Paunzen
(epaunzen@physics.muni.cz) which would save of lot of time spent in searching
or requesting new data,
- by providing cross-identification with previous numbering systems. Without the cross-identifications,
it would have no sense to build a database. With the increasing number of CCD studies, this task
becomes more and more complex and time consuming, although performant tools have been developed.
I hope you will support and appreciate the work done by Ernst Paunzen at Vienna and that WEBDA will continue to be best source of
information on open clusters.
I would like to thank all colleagues who have sent me a copy of their data and permitted to make them available them through the Web site.
I would like to thank especially Brian Skiff, who provided since several years extensive lists of J2000 coordinates. Much of the database content
results from his work.
I would like to express my gratitude to Mr Daniel Lechaire, from the Institute of Astronomy of the University of Lausanne,
who has assumed during many years several tasks in connection with the database: entering data in the computer from published papers,
old and recent, scanning identification maps, measuring XY positions, which finally permitted to develop one of the facilities I like most:
to query the database from scanned or plotted maps.
Finally I am very grateful to Ernst Paunzen for his proposal to continue the development of WEBDA and the enthousiasm he put in the installation
and improvement of the interface. I wish him much pleasure and satisfaction in this job.
WEBDA has been used as primary material for several thesis, its use has been very often acknowledged in papers. I think the project
has filled its goals. It can be improved. This is the task of the new group, and of all persons interested in this beautiful subject:
star clusters.
Jean-Claude Mermilliod
2005 September 23
Data from Carraro G., et al. 2005, Mon. Not. R. Astron. Soc. 362, 649 (2005MNRAS.362..649C)
Notes : New cluster in the database.
Data from Carraro G., et al. 2005, Mon. Not. R. Astron. Soc. 362, 649 (2005MNRAS.362..649C)
Notes : New cluster in the database.
Data from Carraro G., et al. 2005, Mon. Not. R. Astron. Soc. 362, 649 (2005MNRAS.362..649C)
Notes : New cluster in the database.
Data from Carraro G., et al. 2005, Mon. Not. R. Astron. Soc. 362, 649 (2005MNRAS.362..649C)
Notes : New cluster in the database.
2005 September 21
Data from Moreno-Corral M.A., et al. 2005, Rev. Mex. Astron. Astrofis. 41, 69 (2005RMxAA..41...69M)
2005 September 20
Data from Hintz E.G., Rose M.B. 2005, Publ. Astron. Soc. Pacific 117, 955 (2005PASP..117..955H)
2005 August 31
Data from Turner D.G., et al. 2005, Astron. J. 130, 1194 (2005AJ....130.1194T)
2005 August 25
The number of measurements for the UBV photoelectric data has been restored, on the basis of
the GCPD catalogue of UBV photometry.
The uvby mean data have been updated on the basis of the GCPD catalogue of mean data
for the Strögren system.
2005 August 22
Data from Kharchenko N.V., et al. 2005, Astron. Astrophys. 438, 1163 (2005A&A...438.1163K)
The table of cluster parameters has been introduced in the database (COCD)
and links have been established with the original postscript pages of the Open Cluster Diagram Atlas (OCDA),
both from the table and from each cluster page.
2005 August 15
Data from Zdanavicius J., et al. 2005, Baltic Astron. 14, 179 (2005BaltA..14..179Z)
2005 August 11
Data from Lodieu N., et al. 2005, Astron. Astrophys. 436, 853 (2005A&A...436..853L)
2005 August 10
Data from Carraro G., et al. 2005, Astron. J. 130, 635 (2005AJ....130..635C)
Notes Stars with |X| < 250 and |Y| < 250, V < 18.50 and B-V < 3.5 were selected from the entire catalogue. Additional stars
corresponding to the fainter ones observed by Kjeldsen and Frandsen were added. The whole set has been numbered
sequentially. The new numbering system (3634 stars) replaces the previous one (145*).
The original datafile form Carraro et al. can be obtained from the data archives.
epaunzen@physics.muni.cz
Jean-Claude.Mermilliod@obs.unige.ch
Last Update: 2005 October 06