Merging galaxies in the Sloan Digital Sky Survey Early Data Release

被引:34
作者
Allam, SS
Tucker, DL
Smith, JA
Lee, BC
Annis, J
Lin, H
Karachentsev, ID
Laubscher, BE
机构
[1] New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA
[2] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[4] Univ Wyoming, Dept Phys & Astron, Laramie, WY 82071 USA
[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
[6] Russian Acad Sci, Special Astrophys Observ, Nizhnii Arkhyz 369167, Karachai Circes, Russia
关键词
atlases; catalogs; galaxies : interactions; surveys;
D O I
10.1086/381954
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present a new catalog of merging galaxies obtained through an automated systematic search routine. The 1479 new pairs of merging galaxies were found in approximate to 462 square degrees of the Sloan Digital Sky Survey Early Data Release (SDSS EDR) photometric data, and the pair catalog is complete for galaxies in the magnitude range 16.0 less than or equal to g* less than or equal to 20. The selection algorithm, implementing a variation on the original Karachentsev criteria, proved to be very efficient and fast. Merging galaxies were selected such that the intergalaxy separations were less than the sum of the component galaxies' radii. We discuss the characteristics of the sample in terms of completeness, pair separation, and the Holmberg effect. We also present an on-line atlas of images for the SDSS EDR pairs obtained using the corrected frames from the SDSS EDR database. The atlas images also include the relevant data for each pair member. This catalog will be useful for conducting studies of the general characteristics of merging galaxies, their environments, and their component galaxies. The redshifts for a subset of the interacting and merging galaxies and the distribution of angular sizes for these systems indicate the SDSS provides a much deeper sample than almost any other wide-area catalog to date.
引用
收藏
页码:1883 / 1899
页数:17
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