J/ApJ/633/174 Spheroidals and bulge dominated galaxies (Treu+, 2005)
The assembly history of field spheroidals: evolution of mass-to-light ratios and
signatures of recent star formation.
Treu T., Ellis R.S., Liao T.X., Van Dokkum P.G., Tozzi P., Coil A.,
Newman J., Cooper M.C., Davis M.
<Astrophys. J., 633, 174-197 (2005)>
=2005ApJ...633..174T 2005ApJ...633..174T
ADC_Keywords: Photometry, HST ; Equivalent widths ; Galaxy catalogs ; Morphology
Keywords: cosmology: observations - galaxies: elliptical and lenticular, cD -
galaxies: evolution - galaxies: formation - galaxies: structure
Abstract:
We present a comprehensive catalog of high signal-to-noise ratio
spectra obtained with DEIMOS on the Keck II telescope for a sample of
F850LP<22.43mag(AB) field spheroidal (E+S0 galaxies; 165) and
bulge-dominated disk (61) galaxies in the redshift range 0.2<z<1.2,
selected on the basis of visual morphology from the northern field of
the Great Observatories Origins Deep Survey (GOODS-N). We discuss
sample selection, photometric properties, and spectral reduction. We
derive scale lengths, surface brightnesses, and photometric
inhomogeneities from the ACS data and redshifts, stellar velocity
dispersions, and [OII] and Hδ equivalent widths from the Keck
spectroscopy. Using the published 2Ms Chandra Deep Field-North X-ray
catalog (Cat. J/AJ/126/632), we identify active galactic nuclei
(AGNs) to clarify the origin of emission lines seen in the Keck
spectra.
Description:
The field was observed using the Deep Imaging and Multi-Object
Spectrograph (DEIMOS) at the Keck II telescope on the nights of 2003
April 1-5.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 129 226 Catalog of spheroidals and bulge dominated galaxies
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See also:
J/AJ/126/632 : UBVRIz'HK' photometry of 2Ms CDFN X-ray sources (Barger+ 2003)
J/AJ/127/3121 : TKRS catalog of GOODS-North Field (Wirth+, 2004)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 4 I4 --- [TEL2005] Running identification number
6- 14 F9.5 deg RAdeg Right Ascension in decimal degrees (J2000)
16- 23 F8.5 deg DEdeg Declination in decimal degrees (J2000)
25- 26 I2 --- MType Morphological type (1)
28- 32 F5.2 mag Bmag ? Model F435W AB magnitude from r1/4
fitting (2)
34- 38 F5.2 arcsec Bre ? Effective F435W radius from r1/4
fitting (2)
40- 44 F5.2 mag Vmag ? Model F606W AB magnitude from r1/4
fitting (2)
46- 50 F5.2 arcsec Vre ? Effective F606W radius from r1/4
fitting (2)
52- 56 F5.2 mag Imag ? Model F814W AB magnitude from r1/4
fitting (2)
58- 62 F5.2 arcsec Ire ? Effective F814W radius from r1/4
fitting (2)
64- 68 F5.2 mag Zmag ? Model F850LP AB magnitude from r1/4
fitting (2)
70- 73 F4.2 arcsec Zre ? Effective F850LP radius from r1/4
fitting (2)
75- 80 F6.4 --- z Redshift (3)
82- 87 F6.2 km/s sigma ? Velocity dispersion (not corrected to
standard aperture)
89- 94 F6.3 km/s e_sigma ? Error on sigma
96-100 F5.1 0.1nm EW[OII] ? Rest frame [OII] equivalent width (4)
102-105 F4.1 0.1nm e_EW[OII] ? Error in EW[OII] (4)
107-111 F5.1 0.1nm EW(Hd) ? Rest frame Hδ equivalent width (4)
113-115 F3.1 0.1nm e_EW(Hd) ? Error in EW(Hd) (4)
117-123 F7.3 10nm-1 S/N Observer frame S/N ratio (per Angstrom)
125-129 I5 s ExpTime Spectroscopic exposure time
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Note (1): Morphological type, defined as follows:
-1 = Compact;
0 = E;
1 = E/S0;
2 = S0;
3 = Sa+b.
Note (2): Photometric parameters through the b4 filter are derived only for
objects at z<0.34. Formal GALFIT uncertainties on magnitudes and
effective radii are 0.01-0.02mags and a 1-10% in effective radii.
Total uncertainties on the combination of photometric parameters
that enters the Fundamental Plane log(Re-0.32SBe) are 0.02-0.03.
Note (3): All redshifts are quality 4 (certain) except for object 1112
(quality 2, possible), and objects 243, 94, 378, 22, 804, 337, 1382,
1534, 454, 1452 (quality 3, likely). See paper for details.
Note (4): In units of Angstroms. [OII] 3727Å and Hδ 4101Å lines.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 24-Jul-2006