Moral Grandstanding

Tosi, Justin; Warmke, Brandon

doi:10.1111/papa.12075

Cited by 138 publications

(90 citation statements)

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“…As stressed before, we study the case of primordial infall of gas (i.e., Z inf = 0). Although Lehner et al (2013) studied the circumgalactic medium of galaxies and recently demonstrated that metal-enriched infalls occur, previous papers (Tosi 1988;Matteucci 2012) have shown that an Fig. 4, but here, the color code indicates different wind parameters λ of the galaxies that reproduce the MZ relations.…”

Section: Summary Of the Free Parameters And Constraintsmentioning

confidence: 81%

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

Spitoni¹,

Vincenzo

Matteuccí

2017

A&A

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Context. Analytical models of chemical evolution, including inflow and outflow of gas, are important tools for studying how the metal content in galaxies evolves as a function of time.Aims. We present new analytical solutions for the evolution of the gas mass, total mass, and metallicity of a galactic system when a decaying exponential infall rate of gas and galactic winds are assumed. We apply our model to characterize a sample of local starforming and passive galaxies from the Sloan Digital Sky Survey data, with the aim of reproducing their observed mass-metallicity relation. Methods. We derived how the two populations of star-forming and passive galaxies differ in their particular distribution of ages, formation timescales, infall masses, and mass loading factors. Results. We find that the local passive galaxies are, on average, older and assembled on shorter typical timescales than the local star-forming galaxies; on the other hand, the star-forming galaxies with higher masses generally show older ages and longer typical formation timescales compared than star-forming galaxies with lower masses. The local star-forming galaxies experience stronger galactic winds than the passive galaxy population. Exploring the effect of assuming different initial mass functions in our model, we show that to reproduce the observed mass-metallicity relation, stronger winds are requested if the initial mass function is top-heavy. Finally, our analytical models predict the assumed sample of local galaxies to lie on a tight surface in the 3D space defined by stellar metallicity, star formation rate, and stellar mass, in agreement with the well-known fundamental relation from adopting gas-phase metallicity. Conclusions. By using a new analytical model of chemical evolution, we characterize an ensemble of SDSS galaxies in terms of their infall timescales, infall masses, and mass loading factors. Local passive galaxies are, on average, older and assembled on shorter typical timescales than the local star-forming galaxies. Moreover, the local star-forming galaxies show stronger galactic winds than the passive galaxy population. Finally, we find that the fundamental relation between metallicity, mass, and star formation rate for these local galaxies is still valid when adopting the average galaxy stellar metallicity.

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Section: Summary Of the Free Parameters And Constraintsmentioning

confidence: 81%

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

Spitoni¹,

Vincenzo

Matteuccí

2017

A&A

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“…Whatever the arguments about angular momentum, a higher accretion of metal-poor gas and/or a longer e-folding time of the accretion rate as a function of the galactocentric distance is needed to allow for the metallicity gradients observed in spiral galaxies (e.g. Tosi 1988, Matteucci & Francois 1989, Magrini et al 2007, Minchev et al 2014, Kubryk et al 2015.…”

Section: Tablementioning

confidence: 99%

Star Formation Histories of the LEGUS Spiral Galaxies. I. The Flocculent Spiral NGC 7793^∗

Sacchi

Cignoni

Aloisi

et al. 2019

ApJ

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We present a detailed study of the flocculent spiral galaxy NGC 7793, part of the Sculptor group. By analyzing the resolved stellar populations of the galaxy, located at a distance of ∼ 3.7 Mpc, we infer for the first time its radial star formation history (SFH) from Hubble Space Telescope photometry, thanks to both archival and new data from the Legacy ExtraGalactic UV Survey. We determine an average star formation rate (SFR) for the galaxy portion covered by our F555W and F814W data of 0.23 ± 0.02 M /yr over the whole Hubble time, corresponding to a total stellar mass of (3.09 ± 0.33) × 10 9 M in agreement with previous determinations. Thanks to the new data extending to the F336W band, we are able to analyze the youngest stellar populations with a higher time resolution. Most importantly, we recover the resolved SFH in different radial regions of the galaxy; this shows an indication of a growing trend of the present-to-past SFR ratio, increasing from internal to more external regions, supporting previous findings of the inside-out growth of the galaxy.

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“…Logistically speaking, this “ascetic” approach to addressing racialized inequality is easy. Some tactics have already been suggested in this essay: avoid “moral grandstanding” (Tosi and Warmke ) on race. Abstain from itemizing charitable donations in an attempt to lower one's tax liability.…”

Section: Toward An Ascetic Antiracismmentioning

confidence: 99%

Resistance as Sacrifice: Toward an Ascetic Antiracism

al‐Gharbi

2019

Sociological Forum

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Often described as an outcome, inequality is better understood as a social process—a function of how institutions are structured and reproduced, and the ways people act and interact within them across time. Racialized inequality persists because it is enacted moment to moment, context to context—and it can be ended should those who currently perpetuate it commit themselves to playing a different role instead. This essay makes three core contributions. First, it highlights a disturbing parity between the people who are most rhetorically committed to ending racialized inequality and those who are most responsible for its persistence. Next, it explores the origin of this paradox—how it is that ostensibly antiracist intentions are transmuted into “benevolently racist” actions. Finally, it presents an alternative approach to mitigating racialized inequality, one that more effectively challenges the self‐oriented and extractive logics undergirding systemic racism, rather than expropriating blame to others, or else adopting introspective and psychologized approaches to fundamentally social problems, those sincerely committed to antiracism can take concrete steps in the real world—actions that require no legislation or coercion of naysayers, just a willingness to personally make sacrifices for the sake of racial justice.

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Moral Grandstanding

Cited by 138 publications

References 0 publications

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

Star Formation Histories of the LEGUS Spiral Galaxies. I. The Flocculent Spiral NGC 7793^∗

Resistance as Sacrifice: Toward an Ascetic Antiracism

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Moral Grandstanding

Cited by 138 publications

References 0 publications

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

New analytical solutions for chemical evolution models: characterizing the population of star-forming and passive galaxies

Star Formation Histories of the LEGUS Spiral Galaxies. I. The Flocculent Spiral NGC 7793∗

Resistance as Sacrifice: Toward an Ascetic Antiracism

Contact Info

Product

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Star Formation Histories of the LEGUS Spiral Galaxies. I. The Flocculent Spiral NGC 7793^∗