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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 709792.0, MPI für Astronomie / Publikationen_mpia
A search for planetary nebulae with the Sloan Digital Sky Survey: The outer regions of M31
Authors:Kniazev, A. Y.; Grebel, E. K.; Zucker, D. B.; Rix, H.-W.; Martínez-Delgado, D.; Snedden, S. A.
Date of Publication (YYYY-MM-DD):2014
Title of Journal:The Astronomical Journal
Volume:147
Issue / Number:1
Start Page:id. 16 (21 pp)
Audience:Not Specified
Abstract / Description:We have developed a method to identify planetary nebula (PN) candidates in imaging data of the Sloan Digital Sky Survey (SDSS). This method exploits the SDSS's five-band sampling of emission lines in PN spectra, which results in a color signature distinct from that of other sources. Selection criteria based on this signature can be applied to nearby galaxies in which PNe appear as point sources. We applied these criteria to the whole area of M31 as scanned by the SDSS, selecting 167 PN candidates that are located in the outer regions of M31. The spectra of 80 selected candidates were then observed with the 2.2 m telescope at Calar Alto Observatory. These observations and cross-checks with literature data show that our method has a selection rate efficiency of about 90%, but the efficiency is different for the different groups of
Free Keywords:galaxies: abundances; galaxies: evolution; galaxies: individual: M31; galaxies: structure; Local Group
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.1088/0004-6256/147/1/16
URL:http://cdsads.u-strasbg.fr/abs/2014AJ....147...16K
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