Spectroscopy of Galaxies in the Bootes Void

摘要: We investigate the physical properties of a sample 26 galaxies in Bootes void and classify these based on emission lines their spectra. Fourteen are classified as H II with similar to field galaxies. Two galaxies, 1432+5302 1507+4554, extreme starburst Approximately half measurable Hα+[N II] have elevated rates star formation. Analysis galaxy continua suggests that approximately one-third large populations blue stars. Stellar absorption features from metals more than indicate presence late-type Emission detected I 1517+3949 for first time. systems, 1510+4727 1517+3956, identified closely interacting pairs, bringing total number known pairs four. The 1458+4944 is LINER, making at least five AGNs void. Classifications eight remain unknown. emission-line respect stellar populations, properties, fraction AGN pairs. This result inconsistent some models formation low-density environments.