El hombre unidimensional fragmentado

Pino, Juan Antonio Rodríguez del

doi:10.20932/barataria.v0i16.74

Cited by 5 publications

(5 citation statements)

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“…In this work, we used this information to investigate the star formation activity for cluster galaxies displaying different kinematic behaviors. Our cluster sample agrees with previous results (Rodríguez del Pino et al 2017) showing lower sSFR values compared to the field main sequence of starforming galaxies at intermediate redshift. Furthermore, galaxies classified as irregulars (A 50) display a slightly lower average sSFR value (-0.2 dex) than their regular counterparts (-0.1 dex), although this difference becomes insignificant when taking into account the scatter of our sample.…”

Section: Discussionsupporting

confidence: 92%

“…Dense environments accelerate and strengthen the quenching of star formation in galaxies (Maier et al 2016, Rodríguez del Pino et al 2017 and their morphological transformation (Kuchner et al 2017). In this work, we used this information to investigate the star formation activity for cluster galaxies displaying different kinematic behaviors.…”

Section: Discussionmentioning

confidence: 99%

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Galaxy kinematics across different environments in the RXJ1347−1145 cluster complex

Pérez-Martínez

Ziegler

Böhm

et al. 2020

A&A

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Aims. In order to understand the role of the different processes that drive galaxy evolution in clusters, we need comprehensive studies that simultaneously examine several of the most important physical properties of galaxies. In this work we study the interplay between the kinematic state and star formation activity of galaxies in the RXJ1347-1145 cluster complex at z∼0.45. Methods. We used VLT/VIMOS to obtain slit spectra for 95 galaxies across the 40 x40 area where the RXJ1347-1145 cluster complex resides. We determined the cluster membership of our targets by identifying one or more of the available emission lines within the wavelength range. Our spectroscopy is complemented with archival SUBARU/Suprime-Cam deep photometric observations in five optical bands (B, V, Rc, Ic, z'). We examined the kinematic properties of our sample attending to the degree of distortion of the extracted rotation curves. Regular rotating galaxies were included in our Tully-Fisher analysis while the distorted ones were used to study the role of cluster-specific interactions with respect to star formation and AGN activity. Results. Our analysis confirmed the cluster membership for approximately half of our targets. We report a higher fraction of galaxies with irregular gas kinematics in the cluster environment than in the field. Cluster galaxies with regular rotation display a moderate brightening in the B-band Tully-Fisher relation compatible with the gradual evolution of the stellar populations with lookback time, and no significant evolution in the stellar-mass Tully-Fisher relation, in line with previous studies at similar redshift. Average specific star formation rate (sSFR) values are slightly lower in our cluster sample (-0.15 dex) with respect to the main sequence of starforming galaxies, confirming the role of the environment in the early quenching of star formation in clusters. Finally, we carried out an exploratory observational study on the stellar-to-halo mass relation finding that cluster galaxies tend to have slightly lower stellar mass values for a fixed halo mass compared to their field counterparts.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Galaxy kinematics across different environments in the RXJ1347−1145 cluster complex

Pérez-Martínez

Ziegler

Böhm

et al. 2020

A&A

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“…Several studies have shown evidence that at a fixed stellar mass, star-formation rates of galaxies in dense environments are skewed to lower values than in the general field (e.g. Koopmann & Kenney 2004a;Poggianti et al 2008;Gallazzi et al 2009;Wolf et al 2009;Finn et al 2010;Vulcani et al 2010;Haines et al 2013;Lin et al 2014;Taranu et al 2014;Rodríguez del Pino et al 2017). This would imply that there are environmental processes at work during the several Gyrs after infall.…”

Section: Introductionmentioning

confidence: 99%

The Local Cluster Survey. I. Evidence of Outside-in Quenching in Dense Environments

Finn

Desai

Rudnick

et al. 2018

ApJ

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The goal of the Local Cluster Survey is to look for evidence of environmentally driven quenching among star-forming galaxies in nearby galaxy groups and clusters. Quenching is linked with environment and stellar mass, and much of the current observational evidence comes from the integrated properties of galaxies. However, the relative size of the stellar and star-forming disk is sensitive to environmental processing and can help identify the mechanisms that lead to a large fraction of quenched galaxies in dense environments. Toward this end, we measure the size of the star-forming disks for 224 galaxies in nine groups and clusters (0.02 < z < 0.04; SFR > 0.1 M yr −1 ) using 24µm imaging from the Spitzer Space Telescope. We normalize the 24µm effective radius (R 24 ) by the size of the stellar disk (R d ). We find that star-forming galaxies with higher bulge-to-total ratios (B/T ) and galaxies in more dense environments have more centrally concentrated star formation. Comparison with H I mass fractions and NUV−r colors indicates that a galaxy's transition from gas-rich and blue to depleted and red is accompanied by an increase in the central concentration of star formation. We build a simple model to constrain the timescale over which the star-forming disks shrink in the cluster environment. Our results are consistent with a long-timescale (> 2 Gyr) mechanism that produces outside-in quenching, such as the removal of the extended gas halo or weak stripping of the cold disk gas.

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“…Two independent mechanisms, one related to stellar mass and another related to environment, have been proposed to explain this transition, generally called as "quenching", for local galaxies (Peng et al 2010;. In this regard, there would be a "environmental quenching" driven by galactic over-density (e. g., Hirschmann et al 2014;Penny et al 2016;Rodríguez del Pino et al 2017), and "mass quenching", where the shut down of star formation occurs on more dynamic processes (e. g., Bluck et al 2014;Fraser-McKelvie et al 2016;Rowlands et al 2018).…”

Section: Introductionmentioning

confidence: 99%

The dependence of mass and environment on the secular processes of AGNs in terms of morphology, colour, and specific star-formation rate

Argudo-Fernández

Lacerna

Puertas

2018

A&A

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Context. Galaxy mass and environment play a major role in the evolution of galaxies. In the transition from star-forming to quenched galaxies, Active galactic nuclei (AGN) have also a principal action. However, the connections between these three actors are still uncertain. Aims. In this work we investigate the effects of stellar mass and the large-scale environment (LSS), on the fraction of optical nuclear activity in a population of isolated galaxies, where AGN would not be triggered by recent galaxy interactions or mergers. Methods. As a continuation of a previous work, we focus on isolated galaxies to study the effect of stellar mass and the LSS in terms of morphology (early-and late-type), colour (red and blue), and specific star formation rate (quenched and star-forming). To explore where AGN activity is affected by the LSS we fix the stellar mass into low-and high-mass galaxies. We use the tidal strength parameter to quantify their effects. Results. We found that AGN is strongly affected by stellar mass in "active" galaxies (namely late-type, blue, and star-forming), however it has no influence for "quiescent" galaxies (namely early-type, red, and quenched), at least for masses down to 10 10 [M ]. In relation to the LSS, we found an increment on the fraction of SFN with denser LSS in low-mass star forming and red isolated galaxies. Regarding AGN, we find a clear increment of the fraction of AGN with denser environment in quenched and red isolated galaxies, independently of the stellar mass. Conclusions. AGN activity would be "mass triggered" in "active" isolated galaxies. This means that AGN is independent of the intrinsic property of the galaxies, but on its stellar mass. On the other hand, AGN would be "environment triggered" in "quiescent" isolated galaxies, where the fraction of AGN in terms of sSFR and colour increases from void regions to denser LSS, independently of its stellar mass.

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El hombre unidimensional fragmentado

Cited by 5 publications

References 0 publications

Galaxy kinematics across different environments in the RXJ1347−1145 cluster complex

Galaxy kinematics across different environments in the RXJ1347−1145 cluster complex

The Local Cluster Survey. I. Evidence of Outside-in Quenching in Dense Environments

The dependence of mass and environment on the secular processes of AGNs in terms of morphology, colour, and specific star-formation rate

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