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Investigating the Stellar Mass Growth Histories of Satellite Galaxies as a Function of Infall Time Using Phase-space
Indexado
WoS WOS:000468101500001
Scopus SCOPUS_ID:85067315815
DOI 10.3847/1538-4357/AB1917
Año 2019
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



We compile a large sample of nearby galaxies that are satellites of hosts using a well-known Sloan Digital Sky Survey (SDSS) group catalog. From this sample, we create an "ancient infallers" and "recent infallers" subsample, based on the mean infall time predicted from cosmological simulations for galaxies with their location in phase-space. We compare the stellar mass growth histories of the galaxies in these two subsamples, as determined from multiwavelength spectral energy distribution fitting that uses a comprehensive library of star formation history shapes derived from cosmological simulations. By simultaneously controlling for satellite stellar mass and host halo mass, we can clearly see the impact of time spent in their hosts. As we might predict, the ancient infaller population shows clear signs of earlier quenching, especially for lower mass satellites in more massive hosts. More importantly, we find that the effects are not limited to massive hosts. We find that hosts that might be considered low-mass groups (halo masses similar to 10(13) M-circle dot) can significantly alter their satellites, even for massive satellites (stellar masses similar to 10(10) M-circle dot). Intriguingly, we see changes in the mass growth history of the satellites of clusters as early as 8 or 9 Gyr ago, when they had not yet entered the virial radius of their current host. We propose that this could be the result of galaxies being preprocessed in low-mass substructures in the protocluster outskirts, prior to infall.

Revista



Revista ISSN
Astrophysical Journal 0004-637X

Métricas Externas



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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Smith, Rory Hombre Korea Astron & Space Sci Inst KASI - Corea del Sur
2 Pacifici, Camilla Mujer Space Telescope Sci Inst - Estados Unidos
STScI - Estados Unidos
Space Telescope Science Institute - Estados Unidos
3 Pasquali, Anna Mujer Heidelberg Univ - Alemania
Astronomisches Rechen-Institut Heidelberg - Alemania
Astronomisches Rechen-Institut - Alemania
4 CALDERON-CASTILLO, PAULA ERIKA Mujer Universidad de Concepción - Chile

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Financiamiento



Fuente
CONICYT (Chile)
German Research Foundation (DFG)

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Agradecimientos



Agradecimiento
R.S. acknowledges support by Sonderforschungsbereich SFB 881 "The Milky Way System" (subproject B5) of the German Research Foundation (DFG). P.C-C. was supported by CONICYT (Chile) through Programa Nacional de Becas de Doctorado 2014 folio 21140882.

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