SPECTROSCOPY OF LUMINOUS COMPACT BLUE GALAXIES IN DISTANT CLUSTERS. II. PHYSICAL PROPERTIES OF dE PROGENITOR CANDIDATES

Crawford, S.; Wirth, Gregory D.; Bershady, M. A.; Randriamampandry, Solohery M.

doi:10.3847/0004-637x/817/2/87

Cited by 7 publications

(38 citation statements)

References 78 publications

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“…For the z > 0.6 clusters in their sample Crawford et al (2011) find that the number density enhancement of the cluster LCBG population compared to the LCBG field density is comparable to or lower than the corresponding enhancement of the total cluster population compared to the total field population. In addition, Crawford et al (2016) find that the relevant properties of the cluster LCBGs (star formation rate, dynamical mass, size, luminosity and metallicity) are indistinguishable from the properties of field LCBGs at the same redshift.…”

Section: A P P E N D I X F : I M Pac T O F C O N Ta M I Nat I O N B Ymentioning

confidence: 85%

“…Such galaxies were also identified in cluster environments (Koo et al 1997), making them the most relevant potential contaminant for our colour-selected weak lensing source sample. Crawford et al (2011), Crawford, Wirth & Bershady (2014 and Crawford et al (2016) identify and study LCBGs in five massive clusters at 0.5 < z < 0.9 using a photometric preselection, Keck/DEIMOS spectroscopy, and HST morphological measurements. For the z > 0.6 clusters in their sample Crawford et al (2011) find that the number density enhancement of the cluster LCBG population compared to the LCBG field density is comparable to or lower than the corresponding enhancement of the total cluster population compared to the total field population.…”

Section: A P P E N D I X F : I M Pac T O F C O N Ta M I Nat I O N B Ymentioning

confidence: 99%

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Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev–Zel'dovich Survey

Schrabback

Applegate

Dietrich

et al. 2017

Monthly Notices of the Royal Astronomical Society

109

105

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We present an HST/ACS weak gravitational lensing analysis of 13 massive highredshift (z median = 0.88) galaxy clusters discovered in the South Pole Telescope (SPT) Sunyaev-Zel'dovich Survey. This study is part of a larger campaign that aims to robustly calibrate mass-observable scaling relations over a wide range in redshift to enable improved cosmological constraints from the SPT cluster sample. We introduce new strategies to ensure that systematics in the lensing analysis do not degrade constraints on cluster scaling relations significantly. First, we efficiently remove cluster members from the source sample by selecting very blue galaxies in V − I colour. Our estimate of the source redshift distribution is based on CANDELS data, where we carefully mimic the source selection criteria of the cluster fields. We apply a statistical correction for systematic photometric redshift errors as derived from Hubble Ultra Deep Field data and verified through spatial cross-correlations. We account for the impact of lensing magnification on the source redshift distribution, finding that this is particularly relevant for shallower surveys. Finally, we account for biases in the mass modelling caused by miscentring and uncertainties in the concentrationmass relation using simulations. In combination with temperature estimates from Chandra we constrain the normalisation of the mass-temperature scaling relation ln E(z)M 500c /10 14 M = A + 1.5 ln (kT /7.2keV) to A = 1.81 +0.24 −0.14 (stat.)±0.09(sys.), consistent with self-similar redshift evolution when compared to lower redshift samples. Additionally, the lensing data constrain the average concentration of the clusters to c 200c = 5.6 +3.7 −1.8 .

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Section: A P P E N D I X F : I M Pac T O F C O N Ta M I Nat I O N B Ymentioning

confidence: 85%

Section: A P P E N D I X F : I M Pac T O F C O N Ta M I Nat I O N B Ymentioning

confidence: 99%

Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev–Zel'dovich Survey

Schrabback

Applegate

Dietrich

et al. 2017

Monthly Notices of the Royal Astronomical Society

109

105

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“…We describe the observations forming the basis of the present study in our previous paper (Crawford et al 2016). Here, we summarize these observations and describe the additional observations and analysis in the following sections.…”

Section: Observations and Data Analysismentioning

confidence: 85%

“…74 FWHM seeing for the final combined R-band image. Further details of the observations and data reductions appear in Crawford et al (2009Crawford et al ( , 2016.…”

Section: Observationsmentioning

confidence: 99%

“…Stellar masses provide an estimate of the integrated star formation history of a galaxy (Brinchmann & Ellis 2000;Heavens et al 2004;Treu et al 2005), and can be used to trace how galaxies evolve over time. For vigorously star-forming galaxies -and, in particular, the special subclass of these objects known as Luminous Compact Blue Galaxies (LCBGs; see, e.g., Koo et al 1994Koo et al , 1997Crawford et al 2006) -studying (Crawford et al 2006(Crawford et al , 2011(Crawford et al , 2016, we have identified and described the properties of LCBGs found in distant clusters.…”

Section: Introductionmentioning

confidence: 99%

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Star-forming galaxies in intermediate-redshift clusters: stellar versus dynamical masses of luminous compact blue galaxies

Randriamampandry

Crawford

Bershady

et al. 2017

Monthly Notices of the Royal Astronomical Society

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We investigate the stellar masses of the class of star-forming objects known as Luminous Compact Blue Galaxies (LCBGs) by studying a sample of galaxies in the distant cluster MS 0451.6-0305 at z ≈ 0.54 with ground-based multicolor imaging and spectroscopy. For a sample of 16 spectroscopically-confirmed cluster LCBGs (colour B − V < 0.5, surface brightness µ B < 21 mag arcsec −2 , and magnitude M B < −18.5), we measure stellar masses by fitting spectral energy distribution (SED) models to multiband photometry, and compare with dynamical masses (determined from velocity dispersion between 10 < σ v (km s −1 ) < 80), we previously obtained from their emission-line spectra. We compare two different stellar population models that measure stellar mass in star-bursting galaxies, indicating correlations between the stellar age, extinction, and stellar mass derived from the two different SED models. The stellar masses of cluster LCBGs are distributed similarly to those of field LCBGs, but the cluster LCBGs show lower dynamical-to-stellar mass ratios (M dyn /M * = 2.6) than their field LCBG counterparts (M dyn /M * = 4.8), echoing trends noted previously in low-redshift dwarf elliptical galaxies. Within this limited sample, the specific star formation rate declines steeply with increasing mass, suggesting that these cluster LCBGs have undergone vigorous star formation.

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Evolution of galaxy scaling relations in clusters at 0.5 <z< 1.5

Pérez-Martínez

Ziegler²,

Dannerbauer³

et al. 2021

A&A

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Aims. We present new gas kinematic observations with the OSIRIS instrument at the GTC for galaxies in the Cl1604 cluster system at z ∼ 0.9. These observations together with a collection of other cluster samples at different epochs analyzed by our group are used to study the evolution of the Tully-Fisher, velocity-size, and specific angular momentum-stellar mass relations in dense environments over cosmic time. Methods. We used 2D and 3D spectroscopy to analyze the kinematics of our cluster galaxies and extract their maximum rotation velocities (Vmax), which were used as the common parameter in all scaling relations under scrutiny. We determined the structural parameters of our objects by fitting surface brightness profiles to the images of our objects, while stellar-mass values were computed by fitting the spectral energy distribution by making use of extensive archival optical to near-IR photometry. Our methods were consistently applied to all our cluster samples. This makes them ideal for an evolutionary comparison. Results. Up to redshift one, our cluster samples show evolutionary trends compatible with previous observational results in the field and in accordance with semianalytical models and hydrodynamical simulations concerning the Tully-Fisher and velocity-size relations. However, we find a drop of a factor ∼3 in disk sizes and an average B-band luminosity enhancement ⟨ΔMB⟩∼2 mag by z ∼ 1.5. We discuss the role that different cluster-specific interactions may play in producing this observational result. In addition, we find that our intermediate-to-high redshift cluster galaxies follow parallel sequences with respect to the local specific angular momentum to stellar mass relation, although they display lower specific angular momentum values than field samples at similar redshifts. This may be explained by the stronger interacting nature of dense environments in comparison with the field.

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SPECTROSCOPY OF LUMINOUS COMPACT BLUE GALAXIES IN DISTANT CLUSTERS. II. PHYSICAL PROPERTIES OF dE PROGENITOR CANDIDATES

Cited by 7 publications

References 78 publications

Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev–Zel'dovich Survey

Cluster mass calibration at high redshift: HST weak lensing analysis of 13 distant galaxy clusters from the South Pole Telescope Sunyaev–Zel'dovich Survey

Star-forming galaxies in intermediate-redshift clusters: stellar versus dynamical masses of luminous compact blue galaxies

Evolution of galaxy scaling relations in clusters at 0.5 <z< 1.5

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