J/MNRAS/390/383 E+A and companion galaxies (Yamauchi+, 2008)
E+A and companion galaxies. I. A catalogue and statistics.
Yamauchi C., Yagi M., Goto T.
<Mon. Not. R. Astron. Soc., 390, 383-398 (2008)>
=2008MNRAS.390..383Y 2008MNRAS.390..383Y
ADC_Keywords: Galaxy catalogs ; Galaxies, photometry ; Redshifts
Keywords: galaxies: evolution - galaxies: interactions - galaxies: peculiar -
galaxies: starburst
Abstract:
Based on our intensive spectroscopic campaign with the GoldCam
spectrograph on the Kitt Peak National Observatory (KPNO) 2.1-m
telescope, we have constructed the first catalogue of E+A galaxies
with spectroscopic companion galaxies, and investigated a probability
that an E+A galaxy has close companion galaxies. We selected 660 E+A
galaxies with 4.0Å<Hδ EW at a redshift of <0.167 from the Data
Release 5 of the Sloan Digital Sky Survey (SDSS). We selected their
companion candidates from the SDSS imaging data, and classified them
into true companions, fore/background galaxies and companion
candidates using the SDSS and our KPNO spectra. We observed 26
companion candidates of E+A galaxies at the KPNO to measure their
redshifts. Their spectra showed that 17 targets are true companion
galaxies.
Description:
We used the GoldCam spectrometer attached to the 2.1-m telescope at
the KPNO. Our observation was carried out in three semesters. We
observed 26 companion candidates on 2005 September 22-24, 2006 June
28 and 2007 May 17-21.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 127 34 List of E+A and companion pairs
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See also:
II/276 : The SDSS Photometric Catalog, Release 5 (Adelman-McCarthy+, 2007)
http;//www.sdss.org : SDSS Home Page
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- [YYG2008] Sequential identification number of pair
3 A1 --- n_[YYG2008] [*] * when E+A and E+A pair (1)
5- 6 I2 h RAh E+A galaxy right ascension (J2000)
8- 9 I2 min RAm E+A galaxy right ascension (J2000)
11- 15 F5.2 s RAs E+A galaxy right ascension (J2000)
17 A1 --- DE- E+A galaxy declination sign (J2000)
18- 19 I2 deg DEd E+A galaxy declination (J2000)
21- 22 I2 arcmin DEm E+A galaxy declination (J2000)
24- 27 F4.1 arcsec DEs E+A galaxy declination (J2000)
29- 33 F5.2 mag rmag E+A galaxy SDSS r magnitude (2)
35- 40 F6.2 mag rMAG E+A galaxy absolute SDSS r magnitude (2)
42- 46 F5.3 --- z E+A galaxy redshift
48- 51 F4.2 0.1nm EWHd E+A galaxy Hdelta equivalent width
53- 54 I2 h RA2h Companion galaxy right ascension (J2000)
56- 57 I2 min RA2m Companion galaxy right ascension (J2000)
59- 63 F5.2 s RA2s Companion galaxy right ascension (J2000)
65 A1 --- DE2- Companion galaxy declination sign (J2000)
66- 67 I2 deg DE2d Companion galaxy declination (J2000)
69- 70 I2 arcmin DE2m Companion galaxy declination (J2000)
72- 75 F4.1 arcsec DE2s Companion galaxy declination (J2000)
77- 81 F5.2 mag rmag2 Companion galaxy SDSS r magnitude (2)
83- 88 F6.2 mag rMAG2 Companion galaxy absolute SDSS r magnitude (2)
90- 94 F5.3 --- z2 Companion galaxy redshift
96-115 A20 --- r_z2 Origin of z
117-121 F5.3 --- Dz Difference between z and z2
123-127 F5.2 kpc Dist Projection distance
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Note (1):
[YYG2008] 25 and [YYG2008] 26 represent the same pair, i.e. for
[YYG2008] 25, companion galaxy is E+A galaxy of [YYG2008] 26, for
[YYG2008] 26, companion galaxy is E+A galaxy of [YYG2008] 25.
Note (2): Magnitudes and absolute magnitudes with reddening and
K-correction by KCORRECT.V414 (Blanton et al., 2003AJ....125.2348B 2003AJ....125.2348B).
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Mar-2009