Jeremy R. Walsh
Space Telescope European Co-ordinating Facility
European Southern Observatory
Karl-Schwarzschild-Strasse 2
D-85748 Garching
Germany
Room: ESO IPP annex L137
E-mail: jwalsh@eso.org
Phone: +49 89 32 006 248
FAX: +49 89 32 006 703
Anonymous ftp: www.stecf.org/pub/jrw
Support activities at ST-ECF:
-
Lead of ST-ECF Advanced Data Products group.
Project lead for ACS
slitless spectrometry
project
and
WFC3 slitless spectrometry.
Formerly STIS and GHRS Contact Scientist for calibration and data analysis.
Research Interests:
- Planetary Nebulae: chemical abundances; kinematics; laboratories
for atomic physics; extra-galactic planetary nebulae as cosmic probes
- Extra-galactic H II regions: abundances
- Polarimetry and spectropolarimetry: HST and adaptive optics data;
reduction software;
modelling
- Long slit spectral extraction and background estimation
software
using Richarson-Lucy restoration.
Paper
describing two methods.
- Extraction and analysis of spectra from slitless data such as with ACS. Co-I on HST Grapes and PEARS slitless spectroscopy survey programmes.
Recent publications and reports:
- Malhotra, S., Rhoads, J. E., Pirzkal, N., Haiman, Z., Xu, C., Daddi, E., Yan, H., Bergeron, L. E., Wang, J., Ferguson, H. C., Gronwall, C., Koekemoer, A., Kuemmel, M., Moustakas, L. A., Panagia, N., Pasquali, A., Stiavelli, M., Walsh, J. R., Windhorst, R. A., di Serego Alighieri, S., 2005. An overdensity of galaxies at z = 5.9 +/- 0.2 in the Hubble Ultra Deep Field confirmed using the ACS Grism. Astrophys. J., 626, 666. ADS
- Gesicki, K., Zijlstra, A. A., Acker, A., Gorny, S. K., Gozdziewski, K., Walsh, J. R., 2006. Planetary nebulae with emission-line central stars. Astron. Astrophys., 451, 925. ADS
-
Zijlstra, A., Gesicki, K., Walsh, J. R., Pequignot, D., van Hoof,
P. A. M., Minniti, D., 2006. The Planetary Nebula population of the
Sagittarius Dwarf Spheroidal galaxy. MNRAS, in press
astro-ph/0603422
- Larsen, S.S., Walsh, J. R., Kuemmel, M.,2006. Wavelength and Flux Calibration of the ACS/HRC PR200L prism. ACS Instrument Science Report 06-03. pdf
- Full bibliography pdf [126 Kb]
Other activities:
Research Snippets:
Spectra of
21 planetary nebulae in NGC 5128 (Centaurus-A) taken with FORS2 on the VLT.
Multi-object spectra taken with the multi-slit mode of VLT FORS2 of planetary nebulae in the nearest giant elliptical galaxy NGC 5128. Although there are only 18 slitlets, 21 planetary nebulae were detected. The strongest lines around the centre of the spectrum (wavelengths increase from left to to right) are [O III]4959 and 5007A. An extracted spectrum of the bright planetary nebulae catalogued as 5601 by Hui et al (ApJS, 88, 423, 1993) is shown. The [O III]4363A electron temperature sensitive line is detected.
High resolution combination of WFPC2 images of Orion nebula
Fifteen archive images in four filters ([O III], H-alpha, [N II] and narrow V) of the core of the Orion nebula (NGC 1976) (see O'Dell & Wong, AJ, 111, 846, 1996) were combined using the drizzle tecnique of image combination to produce a mosaic with a resolution of 0.1'' over the whole field. The images are available on request (FITS files 100Mbyte each).
Last updated 26 May 2006