Chandra ACIS Survey of M33 (ChASeM33): The enigmatic X-ray emission from IC131 (2009)
Tuellmann, R., Long, K. S., Pannuti, T. G., Winkler, P. F., Gaetz, T. J., Plucinsky, P. P., ...
We present the first X-ray analysis of the diffuse hot ionized gas and the point sources in IC131, after NGC604 the second most X-ray luminous giant HII region in M33. The X-ray emission is detected...
The Chandra ACIS Survey of M33 (ChASeM33): Investigating the Hot Ionized Medium in NGC604 (2008)
Tuellmann, R., Gaetz, T. J., Plucinsky, P. P., Long, K. L., Hughes, J. P., Blair, W. P., ...
NGC604 is the largest HII-region in M33, second only within the Local Group to 30 Dor, and is important as a laboratory for understanding how massive young stellar clusters interact with the...
Tuellmann, R., Breitschwerdt, D., Rossa, J., Pietsch, W.
In Paper I we showed that multi-phase gaseous halos of late-type spiral galaxies, detected in the radio continuum, in Halpha, and in X-rays, are remarkably well correlated regarding their morphology...
Tuellmann, R., Pietsch, W., Rossa, J., Breitschwerdt, D.
This study presents first results from an X-ray mini-survey carried out with XMM-Newton to investigate the diffuse Hot Ionized Medium in the halos of nine nearby star-forming edge-on spiral galaxies....
SOAP and the Interstellar Froth (2004)
We investigate, whether the alleged failure of standard photoionization codes of the Diffuse Ionized Gas (DIG) is simply caused by geometrical effects and the insufficient treatment of the radiative...
An unusual high-ionization nebula in NGC55 (2003)
We report on the detection of a previously unknown extended low-density nebula of very high temperature and excitation, TR001507.7-391206, located above the midplane of NGC55. The nebular emission...
Star formation in gaseous galaxy halos: VLT-spectroscopy of extraplanar HII-regions in NGC55 (2003)
Tuellmann, R., Rosa, M. R., Elwert, T., Bomans, D. J., Ferguson, A. M. N.
We present first deep VLT-spectra of a new class of compact extraplanar objects located in the disk-halo interface of the edge-on spiral galaxy NGC55. Their spectra reveal continuum emission from...
The thermal and non-thermal gaseous halo of NGC5775 (2000)
Tuellmann, R., Soida, M., Urbanik, M., Rossa, J.
In this letter we present first results from spectroscopic observations of Diffuse Ionized Gas (DIG) in the halo of NGC5775 obtained with FORS1 attached to UT1/Antu of the Very Large Telescope (VLT)....
Spectroscopy of diffuse ionized gas in halos of selected edge-on galaxies (2000)
In order to examine the excitation and ionization mechanism of extraplanar diffuse ionized gas (DIG) we have obtained optical longslit spectra of seven edge-on spiral galaxies. In four objects the...