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J/ApJ/835/254  GLASS. IX. Structural param. from HFF & GLASS  (Morishita+, 2017)

The Grism Lens-Amplified Survey from Space (GLASS). IX. The dual origin of low-mass cluster galaxies as revealed by new structural analyses. Morishita T., Abramson L.E., Treu T., Vulcani B., Schmidt K.B., Dressler A., Poggianti B.M., Malkan M.A., Wang X., Huang K.-H., Trenti M., Bradac M., Hoag A. <Astrophys. J., 835, 254-254 (2017)> =2017ApJ...835..254M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Photometry, HST ; Redshifts ; Morphology ; Surveys Keywords: galaxies: clusters: general; galaxies: elliptical and lenticular, cD galaxies: evolution; galaxies: structure Abstract: Using deep Hubble Frontier Fields imaging and slitless spectroscopy from the Grism Survey from Space, we study 2200 cluster and 1748 field galaxies at 0.2≤z≤0.7 to determine the impact of environment on galaxy size and structure at stellar masses logM*/M>7.8, an unprecedented limit at these redshifts. Based on simple assumptions-re=f(M*)-we find no significant differences in half-light radii (re) between equal-mass cluster or field systems. More complex analyses --re=f(M*,U-V,n,z,Σ)-- reveal local density (Σ) to induce only a 7%±3% (95% confidence) reduction in re beyond what can be accounted for by U-V color, Sersic index (n), and redshift (z) effects. Almost any size difference between galaxies in high- and low-density regions is thus attributable to their different distributions in properties other than environment. Indeed, we find a clear color-re correlation in low-mass passive cluster galaxies (logM*/M<9.8) such that bluer systems have larger radii, with the bluest having sizes consistent with equal-mass star-forming galaxies. We take this as evidence that large-re low-mass passive cluster galaxies are recently acquired systems that have been environmentally quenched without significant structural transformation (e.g., by ram pressure stripping or starvation). Conversely, ∼20% of small-re low-mass passive cluster galaxies appear to have been in place since z≳3. Given the consistency of the small-re galaxies' stellar surface densities (and even colors) with those of systems more than ten times as massive, our findings suggest that clusters mark places where galaxy evolution is accelerated for an ancient base population spanning most masses, with late-time additions quenched by environment-specific mechanisms mainly restricted to the lowest masses. Description: We base our analysis on Hubble Frontier Fields (HFF; Lotz+ 2017ApJ...837...97L) imaging and Grism Survey from Space (GLASS; Schmidt+ 2014ApJ...782L..36S; Treu+, 2015, J/ApJ/812/114) HST spectroscopy for the first four HFF clusters with complete data: Abell2744 (z=0.308), MACS0416 (0.396), MACS0717 (0.548), and MACS1149 (0.544). HFF imaging spans ACS F435/606/814W through WFC3IR F105/125/140/160W filters (seven bands). Our final catalog consists of 3948 galaxies, with 2200 in clusters and 1748 in field environments. A total of 298 have ground-based and 168 have GLASS spectroscopic redshifts. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 140 4309 Source and structural catalog
See also: J/ApJ/591/53 : I photometry of Cl 0024+16 (Treu+, 2003) J/ApJ/621/673 : Line indices for 124 early-type galaxies (Thomas+, 2005) J/ApJS/164/334 : ACS Virgo Cluster Survey. VI (Ferrarese+, 2006) J/ApJ/690/1236 : COSMOS photometric redshift catalog (Ilbert+, 2009) J/MNRAS/413/813 : ATLAS3D project. I. (Cappellari+, 2011) J/ApJ/739/L44 : Structural data for 0.2<z<2.7 galaxies (Damjanov+, 2011) J/MNRAS/414/3699 : Study of hot stellar systems and galaxies (Misgeld+, 2011) J/ApJ/728/27 : Chandra & AAOmega observations of Abell 2744 (Owers+, 2011) J/ApJ/750/93 : NIR observations of XMM-LSS J02182-05102 (Papovich+, 2012) J/ApJ/779/102 : Metallicities of RGB stars in dwarf galaxies (Kirby+, 2013) J/ApJ/777/18 : Stellar mass functions of galaxies to z=4 (Muzzin+, 2013) J/MNRAS/440/843 : SIM2D parameters of SDSS-DR7 galaxies (Omand+, 2014) J/MNRAS/446/1567 : SAMI Galaxy Survey: EDR (Allen+, 2015) J/MNRAS/448/3484 : ATLAS3D Project. XXX (McDermid+, 2015) J/MNRAS/453/1136 : XDF CHEF photometric catalogue (Jimenez-Teja+, 2015) J/ApJ/812/114 : Grism Lens-Amplified Survey from Space (GLASS). I. (Treu+, 2015) J/ApJ/811/29 : GLASS. IV. Lensing cluster Abell 2744 (Wang+, 2015) J/ApJS/224/33 : CLASH-VLT: the FF cluster MACSJ0416.1-2403 (Balestra+, 2016) J/AJ/151/78 : Jellyfish galaxy cand. in galaxy clusters (Poggianti+, 2016) J/ApJ/822/78 : VLT/MUSE spectrosc. obs. of MACSJ1149.5+2223 (Grillo+, 2016) J/ApJ/831/182 : GLASS. VI. MCSJ0416.1-2403 HFF imaging+spectra (Hoag+, 2016) J/ApJ/833/178 : GLASS. VII. Hα maps (Vulcani+, 2016) J/ApJS/224/33 : CLASH-VLT: the FF cluster MACSJ0416.1-2403 (Balestra+, 2016) J/A+A/590/A31 : ASTRODEEP Frontier Fields Catalogues (Merlin+, 2016) J/A+A/597/A41 : ALMA Frontier Fields Survey. I. (Gonzalez-Lopez+, 2017) J/A+A/600/A90 : MACS J0416.1-2403 redshift catalogue (Caminha+, 2017) : GLASS home page : FF HST data Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq [1/99] Galaxy cluster number (1) 4- 7 I4 --- Gal [21/5546] Galaxy ID 9- 19 F11.7 deg RAdeg Right ascension (J2000) 21- 31 F11.7 deg DEdeg Declination (J2000) 33- 36 F4.2 --- z [0.2/0.7] The best redshift (2) 38- 43 F6.3 mag mag [16.7/27] HST/WFC3 F160W total AB magnitude (3) 45- 50 F6.4 mag e_mag [0.0001/2] Error in total magnitude 52- 56 F5.2 Msun logM* [6/12] Stellar mass derived by FAST 59- 63 F5.3 Msun e_logM* [0.01/0.6] Error in stellar mass 65- 72 F8.4 kpc logae [-1/2]?=-99 Effective radius along major axis in log 74- 80 F7.4 kpc e_logae [0.0001/92]?=99 Error in logae 82- 88 F7.4 --- logn [-1/1] Sersic index in log 90- 96 F7.4 --- e_logn [0.0005/99] Error in logn 98-105 F8.4 --- logq [-1/0]?=-99 Axis ratio in log 107-115 F9.4 --- e_logq [0.004/7563]?=99 Error in logq 117 I1 --- F [0/3] Flag for GALFIT visual inspection (0=Fine, 1=Poor/contaminated, 2=Point source) (4) 120-124 F5.3 mag U-V [0.2/2.3] Rest-frame U-V color index 126-131 F6.3 mag V-J [-0.1/2.3] Rest-frame V-J color index 133-140 F8.3 Mpc-2 Sig5 [0.4/1720] Fifth-closest local galaxy number density (Σ5th)
Note (1): ID as follows: 1 = Abell2744CLS (z=0.308), 2 = MACS0416CLS (MCS J0416.1-2403 in Simbad; z=0.396) 3 = MACS0717CLS (MCS J0717.5+3745 in Simbad; z=0.548) 4 = MACS1149CLS (MCS J1149.5+2223 in Simbad; z=0.544) 5 = Abell2744PR1, 6 = MACS0416PR1, 7 = MACS0717PR1, 8 = MACS1149PR1, 99 = the eXtreme Deep Field (XDF; Illingworth+ 2013ApJS..209....6I). Both Hubble Frontier Fields (HFF) and Grism Survey from Space (GLASS) programs use a parallel strategy where HST WFC3IR and ACS are exposed simultaneously so that the former falls on the cluster core ("CLS") and the latter on a low-density infall/field region ("PR1"). Note (2): zbest is ground-based spectroscopic redshift (from Owers+, 2011, J/ApJ/728/27; Ebeling+, 2014ApJ...781L..40E; Balestra+, 2015, J/ApJS/224/33) if available, implemented with GLASS grism redshift, and seven-band photometric-redshift derived by EAZY for else. All PR1 redshifts are photometric (see Section 2.3). Note (3): F160W-band Auto magnitude derived by SExtractor. Note (4): Visual inspection flag for sources 2σ above/below the size-mass relation for each population.
History: From electronic version of the journal References: Treu et al. Paper I. 2015ApJ...812..114T Cat. J/ApJ/812/114 Jones et al. Paper II. 2015AJ....149..107J Schmidt et al. Paper III. 2016ApJ...818...38S Wang et al. Paper IV. 2015ApJ...811...29W Cat. J/ApJ/811/29 Vulcani et al. Paper V. 2015ApJ...814..161V Hoag et al. Paper VI. 2016ApJ...831..182H Cat. J/ApJ/831/182 Vulcani et al. Paper VII. 2016ApJ...833..178V Cat. J/ApJ/833/178 Vulcani et al. Paper VIII. 2017ApJ...837..126V Morishita et al. Paper IX. 2017ApJ...835..254M This catalog. Wang et al. Paper X. 2017ApJ...837...89W Schmidt et al. Paper XI. 2017ApJ...839...17S
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 04-Sep-2017
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