J/AJ/139/1857 Sample of major galaxy pairs at z=0.08-0.38 (Woods+, 2010)
Triggered star formation in galaxy pairs at z = 0.08-0.38.
Woods D.F., Geller M.J., Kurtz M.J., Westra E., Fabricant D.G.,
Dell'Antonio I.
<Astron. J., 139, 1857-1870 (2010)>
=2010AJ....139.1857W 2010AJ....139.1857W
ADC_Keywords: Galaxy catalogs ; Photometry ; Spectroscopy
Keywords: galaxies: active - galaxies: interactions - galaxies: stellar content
Abstract:
We measure the strength, frequency, and timescale of tidally triggered
star formation at redshift z=0.08-0.38 in a spectroscopically
complete sample of galaxy pairs drawn from the magnitude-limited
redshift survey of 9825 Smithsonian Hectospec Lensing Survey galaxies
with R<20.3. To examine the evidence for tidal triggering, we
identify a volume-limited sample of major (|ΔMR|<1.75,
corresponding to mass ratio >1/5) pair galaxies with MR←20.8 in
the redshift range z=0.08-0.31.
Description:
The SHELS magnitude-limited redshift survey includes 9825 galaxies
with total R-band magnitude R<20.3. The galaxies are selected from
the Deep Lens Survey F2 field R-band images. We obtained spectroscopy
using Hectospec at the MMT.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 113 624 *Sample of major galaxy pairs
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Note on table2.dat: Standard ΛCDM cosmology: H0=71km/s/Mpc,
Ωm=0.3, and ΩΛ=0.7.
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See also:
J/A+AS/110/19 : Kinematical observations of pairs of galaxies (Davoust+ 1995)
J/A+AS/110/131 : Mixed pairs of galaxies. I. (Rampazzo+, 1995)
J/AJ/129/682 : Structural properties of S+S galaxies (Hernandez-Toledo+ 2005)
J/A+A/456/467 : New sample of bright galaxy pairs in UZC (Focardi+, 2006)
J/AJ/132/197 : Close pairs of galaxies (Woods+, 2006)
J/AJ/132/2243 : Infrared properties of close pairs of galaxies (Geller+, 2006)
J/ApJ/582/668 : Colours and Hα in galaxy pairs (Barton Gillespie+, 2003)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- Pair [1/312] Pair ID index number
5- 26 A22 --- ID Identification (name made with positions,
DDD.ddddddd+DD.ddddddd)
28 I1 h RAh Hour of Right Ascension (J2000)
30- 31 I2 min RAm Minute of Right Ascension (J2000)
33- 38 F6.3 s RAs Second of Right Ascension (J2000)
40- 41 I2 deg DEd Degree of Declination (J2000)
43- 44 I2 arcmin DEm Arcminute of Declination (J2000)
46- 51 F6.3 arcsec DEs Arcsecond of Declination (J2000)
53- 59 F7.5 --- z Spectroscopic redshift (1)
61- 65 F5.2 mag Rmag Apparent R band magnitude (2)
67- 72 F6.2 mag RMAG Absolute R band magnitude (3)
74- 75 I2 kpc DelD Projected separation
77- 79 I3 km/s DelV Line-of-sight peculiar velocity difference
81- 84 F4.2 --- Dn4000 The 4000 Angstrom break indicator (4)
86- 90 F5.2 10-10yr-1 SSFR Hα specific star formation rate (5)
92-113 A22 --- IDComp Identification of closest companion
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Note (1): Typical error for cz in emission line galaxies is 34km/s and 65km/s
for absorption line galaxies (Section 2.3).
Note (2): Typical error is 0.05mag (Section 2.2).
Note (3): k+e corrected. Typical error is ∼0.1mag, varies with redshift and
galaxy type (Section 2.2).
Note (4): Typical error is 4.5% (Section 2.3).
Note (5): Typical error is 30% (Section 2.3.1).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 24-May-2012