2017/10/09 by S. Kimeswenger, Kimeswenger, S., D. Barria +8
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Stellar, planetary, and galactic studies #astro-ph.GA #astro-ph.IM
paper · pdf · doi:10.48550/arxiv.1710.03351
9 pages, 10 figures, accepted for publication in Revista Mexicana de Astronomía y Astrofísica
arxiv created 2017/10/09 · openalex publication_date 2017/10/09 · arxiv updated 2017/10/11 · openalex created_date 2017/10/20 · openalex updated_date 2026/07/28
During the start of a survey program using FORS2 long slit spectroscopy on planetary nebulae (PN) and their haloes, we serendipitously discovered six background emission line galaxies (ELG) with redshifts of z = 0.2057, 0.3137, 0.37281, 0.4939, 0.7424 and 0.8668. Thus they clearly do not belong to a common cluster structure. We derived the major physical properties of the targets. Since the used long slit covers a sky area of only 570 arcsec2, we discuss further potential of serendipitous discoveries in archival data, beside the deep systematic work of the ongoing and upcoming big surveys. We conclude that archival data provide a decent potential for extending the overall data on ELGs without any selection bias.