Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987msngr..49...15j&link_type=abstract
ESO Messenger (ISSN 0722-6691), Sept. 1987, v. 49, p. 15-18.
Astronomy and Astrophysics
Astronomy
2
Astronomical Photometry, Elliptical Galaxies, Galactic Rotation, Galactic Structure
Scientific paper
This paper reports the results of photometric and kinematic observations on IC 3370 galaxy, which has been classified in the literature as an elliptical with box-like characteristics. The Johnson B, V, and R surface photometry of IC 3370 was oabtained with an RCA CCD aligned E-W at the f/13 Cassegrain focus of the 0.9-m telescope at CTIO. The luminosity of IC 3370, with the absolute B magnitude estimated as M(B) = -22.3, is typical of an elliptical galaxy. The IC 3370 galaxy also shows a significant amount of isophotal twisting amounting to a total rotation of about 25 deg between r = 0 and 70 arcsec. The kinematic spectroscopic data, obtained with Boller and Chivens spectrograph and CCD at the 3.6-m telescope at ESO, showed that IC 3370 is strongly cylindrically rotating to large z distances above and below the plane of rotation. In addition, a faint luminous stellar disk was observed in the galaxy. The results suggest that IC 3370 is an SOpec galaxy and not an elliptical, as was previously classified.
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