J/AJ/127/1883 Merging galaxies in SDSS EDR (Allam+, 2004)
Merging galaxies in the Sloan Digital Sky Survey Early Data Release.
Allam S.S., Tucker D.L., Smith J.A., Lee B.C., Annis J., Lin H.,
Karachentsev I.D., Laubscher B.E.
<Astron. J., 127, 1883-1899 (2004)>
=2004AJ....127.1883A 2004AJ....127.1883A
ADC_Keywords: Surveys ; Galaxies, photometry ; Photometry, SDSS
Keywords: atlases - catalogs - galaxies: interactions - surveys
Abstract:
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 ∼462 square degrees of the Sloan Digital Sky
Survey Early Data Release (SDSS EDR, Cat. J/AJ/123/567) photometric
data, and the pair catalog is complete for galaxies in the magnitude
range 16.0≤g*≤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.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 141 1479 Properties of the SDSS EDR Merging Pairs Sample
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See also:
J/AJ/123/567 : SDSS quasar catalog, I: Early Data Release (Schneider+, 2002)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [ATS2004] Running identification number
6- 7 I2 h RAh Pair's hour of right ascension (J2000)
9- 10 I2 min RAm Pair's minute of right ascension (J2000)
12- 16 F5.2 s RAs Pair's second of right ascension (J2000)
18 A1 --- DE- Sign of the pair's declination (J2000)
19- 20 I2 deg DEd Pair's degree of declination (J2000)
22- 23 I2 arcmin DEm Pair's arcminute of declination (J2000)
25- 29 F5.2 arcsec DEs Pair's arcsecond of declination (J2000)
31- 36 F6.3 mag u*mag Pair's total SDSS Petrosian u* band magnitude
38- 43 F6.3 mag g*mag Pair's total SDSS Petrosian g* band magnitude
45- 50 F6.3 mag r*mag Pair's total SDSS Petrosian r* band magnitude
52- 57 F6.3 mag i*mag Pair's total SDSS Petrosian i* band magnitude
59- 64 F6.3 mag z*mag Pair's total SDSS Petrosian z* band magnitude
66- 71 F6.3 arcsec Sep Prejected separation between the pair
73- 76 A4 --- --- [SDSS]
78- 97 A20 --- NameA Brighter pair member SDSS name (1)
99-106 F8.6 --- zA ? Spectroscopic redshift of brighter pair
member
108-111 A4 --- --- [SDSS]
113-132 A20 --- NameB Fainter pair member SDSS name (1)
134-141 F8.6 --- zB ? Spectroscopic redshift of fainter pair
member
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Note (1): In SDSS JHHMMSS.ss+DDMMSS.s format.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 06-Jul-2004