Multi-long-slit Spectroscopy For Kinematic Studies. II. Initial Results For The Edge-on Galaxies NGC891 And NGC4244

Details Multi-long-slit Spectroscopy For Kinematic Studies. II. Initial Results For The Edge-on Galaxies NGC891 And NGC4244 Multi-long-slit Spectroscopy For Kinematic Studies. II. Initial Results For The Edge-on Galaxies NGC891 And NGC4244

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1302c&link_type=abstract

American Astronomical Society, AAS Meeting #211, #13.02; Bulletin of the American Astronomical Society, Vol. 39, p.755

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We present results of observations of the edge-on galaxies NGC891 and NGC4244 using a multi-long-slit setup on the DIS spectrograph on the ARC 3.5m telescope. In combination with a 25A H-alpha filter, 16 slits of 2" by 4.5' could be observed simultaneously over a 4' by 4.5' field of view. The spectral resolution is 4 Anstrom. In the case of NGC891 we have obtained a deep spectrum of the Northern half of the halo, while for NGC4244 we obtained spectra with the slits oriented parallel to the major axis and a second exposure with the slits perpendicular to the major axis. In the case of NGC 891, the data were obtained to test the accuracy of our velocity measurements by comparison with previous observations, although we also do expand on the spatial coverage of ionized gas in the halo. For NGC4244, deep optical imaging has not shown a very extended diffuse ionized gas halo, and here our goal is to use the spectroscopic data to improve upon the limits set in the imaging studies. We present the results of these tests and discuss other implementations of the multi-long-slit setup. One of these is the possibility to perform deep spectroscopic searches for detection of ionized gas in galaxy halos through use of up to 45 slits when using a lower resolution grating.
This research was supported by an award from Research Corporation.

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