AAS 197, January 2001
Session 58. Barred and Edge-on Galaxies
Oral, Tuesday, January 9, 2001, 10:30am-12:00noon, Pacific One

[Previous] | [Session 58] | [Next]

[58.07] The First Optical Spectroscopy of Red LSB Galaxies, and the Possible Discovery of the Largest Galaxy Known

K. O'Neil (Arecibo Observatory)

We will present results from the first optical spectra obtained of red (B-V > 1) low surface brightness galaxies, taken with the Palomar 5m telescope. Four of the observed galaxies were previously detected with the Arecibo 305m telescope and were known to be nearby (v < 10,000 km s-1), red (B-V > 1), LSB systems. Redshift was not a priori known for the fifth galaxy ([IBM88] V2L8), which is also unique in the sample in that it is only the small (2'') nucleus of the galaxy which is red -- the surrounding region has a B-V color of 0.5. Previous HST WFPC2 studies of this galaxy suggested it may lie well behind the Virgo Cluster (of which it is often considered a member). Our spectroscopic studies appear to confirm this idea, placing the galaxy at a velocity of 31,060 km s-1. If this velocity is correct, V2L8 exceeds Malin 1 as the largest galaxy known.

Only the H\alpha, NII, and SII lines are visible in all five galaxies, while the O[II], O[III], and Hg are visible in three of the galaxies, and H\beta can be found in only two. Detailed spectral analysis of all five galaxies will be presented.

If you would like more information about this abstract, please follow the link to http://www.naic.edu/~koneil. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: koneil@naic.edu

[Previous] | [Session 58] | [Next]