NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-24 T10:28:50 PDT
Help | Comment | NED Home

For refcode 2011A&A...536A..66M:
Retrieve 129 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2011A&A...536A..66M Tidal streams around galaxies in the SDSS DR7 archive. I. First results Miskolczi, A.; Bomans, D. J.; Dettmar, R.-J. Abstract. Context. Models of hierarchical structure formation predict the accretion of smaller satellite galaxies onto more massive systems and this process should be accompanied by a disintegration of the smaller companions visible, e.g., in tidal streams. Aims: In order to verify and quantify this scenario we have developed a search strategy for low surface brightness tidal structures around a sample of 474 galaxies using the Sloan Digital Sky Survey DR7 archive. Methods: Calibrated images taken from the SDSS archive were processed in an automated manner and visually inspected for possible tidal streams. Results: We were able to extract structures at surface brightness levels ranging from ~24 down to 28 mag arcsec^-2^. A significant number of tidal streams was found and measured. Their apparent length varies as they seem to be in different stages of accretion. Conclusions: At least 6% of the galaxies show distinct stream like features, a total of 19% show faint features. Several individual cases are described and discussed. Key words: galaxies: evolution, galaxies: interactions, galaxies: halos, galaxies: photometry, galaxies: stellar content, techniques: image processing
Retrieve 129 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home