Recent WHAM News
We have obtained H-alpha data for over 90% of the portion of sky which was not visible from the northern hemisphere. The image on our home page will show our reduction progress on the southern extension.
At the AAS meeting in Seattle in January 2011, our group and collaborators presented six posters:
- UW-Madison undergrad Nitish Chopra presented approximately 50% of the southern survey extension in a preliminary reduction, including channel maps now spanning ±30° about the whole Galactic Plane. [PDF]
- Alex showed some of the first results from his work adding magnetic fields to the supernova-driven ISM simulations of Joung & Mac Low. [PDF]
- Kat presented early results from her H-Alpha survey of the Magellanic Bridge. [PDF]
- Matt and Greg showed WHAM multiline emission from the Magellanic Stream and a preliminary H-alpha map of the extended ionized gas around the SMC. [PDF]
- Cornell undergrad Melissa Halford worked with Ed during UW's 2010 summer REU program. She presented her work combining [O II] measurements from a new SHS instrument with WHAM observations of H-alpha, [N II], and [S II]. [PDF]
- UW-Whitewater undergrad Martin Gostisha, also a 2010 Madison summer REU student, and Bob Benjamin reported on their discovery of a new, large bubble in the southern survey. [PNG]
July & August, 2010
Alex and Matt published articles for the proceedings of The Dynamic ISM: A celebration of the Canadian Galactic Plane Survey in Naramata, BC held in June, 2010. Matt reviewed "The Distribution of Warm Ionized Medium in Galaxies" and presented "Early Results from the Wisconsin H-Alpha Mapper Southern Sky Survey" while Alex updated the progress of his project, "Photoionization of High Altitude Gas in a Supernova-Driven Turbulent Interstellar Medium".
March 13, 2009
Matt, Kurt, Ed, Greg, and Alex have spent the last two weeks uncrating and setting up WHAM here at the Cerro Tololo Interamerican Observatory in Chile. The instrument is already in working order, and we have begun calibration observations.
April 17, 2008
WHAM was removed from the pad on Kitt Peak and loaded onto the truck this morning. We have photos posted. It's been a great 11 years, and we look forward to Chile!
April 16, 2008
Alex, Ed, Kurt, and Matt have all spent time at Kitt Peak in the past three weeks packing WHAM up to prepare the instrument for the move to Cerro Tololo Interamerican Observatory in Chile. A crane and truck will arrive tomorrow to take WHAM back to Madison for six months of refurbishment and upgrades, and we will ship it down to Chile late this year to begin a southern kinematic H-alpha survey.
Alex, Rex, and Matt attended the AAS meeting in Seattle, WA. Alex presented a poster on his ongoing study of the denstiy distribution of the WIM and a promising comparision of the statistics of Hα emission (EM) and pulsar dispersion measures (DM) with MHD simulations of the ISM by Kowal, Lazarian, and collaborators. Rex presented a poster of his early work on [O III] emission line maps toward several regions in the Galaxy, including the λ Ori (O8 III) H II region.
We have been awarded a grant from the NSF to continue our research with WHAM. This next round of funding will be used to upgrade some of the aging hardware systems and then move WHAM from Kitt Peak to the southern hemisphere so that we can complete an all-sky kinematic Hα survey.