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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
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:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 127 34 List of E+A and companion pairs
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
Bytes Format Units Label Explanations
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
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).
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 09-Mar-2009
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