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Related papers: A Stellar Mass Threshold for Quenching of Field Ga…

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An order of magnitude more dwarf galaxies are expected to inhabit the Local Group, based on currently accepted galaxy formation models, than have been observed. This discrepancy has been noted in environments ranging from the field to rich…

Astrophysics · Physics 2009-11-13 Kristin Chiboucas , Igor D. Karachentsev , R. Brent Tully

We use both photometric and spectroscopic data from the {\it Hubble Space Telescope} to explore the relationships among 4000 \AA\ break (D4000) strength, colors, stellar masses, and morphology, in a sample of 352 galaxies with…

Astrophysics of Galaxies · Physics 2018-11-14 Keunho Kim , Sangeeta Malhotra , James E. Rhoads , Bhavin Joshi , Ignacio Fererras , Anna Pasquali

Observations suggest that satellite quenching plays a major role in the build-up of passive, low-mass galaxies at late cosmic times. Studies of low-mass satellites, however, are limited by the ability to robustly characterize the local…

Astrophysics of Galaxies · Physics 2022-08-08 Devontae C. Baxter , M. C. Cooper , Sean P. Fillingham

We analyse Spitzer MIPS 24micron observations, and SDSS (DR7) optical broadband photometry and spectra, to investigate the star formation (SF) properties of galaxies residing in the Coma supercluster region. We find that SF in dwarf…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Smriti Mahajan , Chris P. Haines , Somak Raychaudhury

We report evidence of environmental quenching among galaxies at redshift ~ 2, namely the probability that a galaxy quenches its star formation activity is enhanced in the regions of space in proximity of other quenched, more massive…

We present a sample of 40 AGN in dwarf galaxies at redshifts $z \lesssim$ 2.4. The galaxies are drawn from the \textit{Chandra} COSMOS-Legacy survey as having stellar masses $10^{7}\leq M_{*}\leq3 \times 10^{9}$ M$_{\odot}$. Most of the…

Astrophysics of Galaxies · Physics 2018-05-16 M. Mezcua , F. Civano , S. Marchesi , H. Suh , G. Fabbiano , M. Volonteri

The origin of the correlations between mass, morphology, quenched fraction, and formation history in galaxies is difficult to define, primarily due to the uncertainties in galaxy star-formation histories. Star-formation histories are better…

We use the scatter in the stellar-to-halo mass relation to constrain galaxy evolution models. If the efficiency of converting accreted baryons into stars varies with time, halos of the same present-day mass but different formation histories…

Astrophysics of Galaxies · Physics 2017-03-22 Jeremy L Tinker

We review observational data about a sample of Local Volume objects containing about 1000 galaxies within 11 Mpc of the Milky Way. Dwarf galaxies with stellar masses $M_*/M_{\odot} < 9$ dex make up 5/6 of the sample. Almost 40% of them have…

Astrophysics of Galaxies · Physics 2019-06-19 I. D. Karachentsev , E. I Kaisina

We present the stellar mass functions (SMF) and mass densities of galaxies, and their spheroid and disk components in the local (z~0.1) universe over the range 8.9 <= log(M/M_solar) <= 12 from spheroid+disk decompositions and corresponding…

Astrophysics of Galaxies · Physics 2016-03-23 Karun Thanjavur , Luc Simard , Asa F. L. Bluck , Trevor Mendel

We present the eddington bias corrected Specific Star Formation Rate Function (sSFRF) at different stellar mass scales from a sub-sample of the Sloan Digital Sky Survey Data Release DR7 (SDSS), which is considered complete both in terms of…

We investigate the quenching properties of central and satellite galaxies, utilizing the halo masses and central-satellite identifications from the SDSS galaxy group catalog of Yang et al. We find that the quenched fractions of centrals and…

Astrophysics of Galaxies · Physics 2018-07-04 Enci Wang , Huiyuan Wang , Houjun Mo , S. H. Lim , Frank C. van den Bosch , Xu Kong , Lixin Wang , Xiaohu Yang , Sihan Chen

We study the quenching of galaxies in different environments and its evolution in the redshift range $0.43 \leq z \leq 0.89$. For this purpose, we identify galaxies inhabiting filaments, the isotropic infall region of groups, the field, and…

Astrophysics of Galaxies · Physics 2019-02-14 Juan Manuel Salerno , Héctor J. Martínez , Hernán Muriel

We explore the properties of central galaxies living in voids using the EAGLE cosmological hydrodynamic simulations. Based on the minimum void-centric distance, we define four galaxy samples: inner void, outer void, wall, and skeleton. We…

Astrophysics of Galaxies · Physics 2022-09-21 Yetli Rosas-Guevara , Patricia Tissera , Claudia del P. Lagos , Enrique Paillas , Nelson Padilla

We present ALMA Band 6 (nu=233GHz, lambda=1.3mm) continuum observations towards 68 'normal' star-forming galaxies within two Coma-like progenitor structures at z=2.10 and 2.47, from which ISM masses are derived, providing the largest census…

We attempt in this paper to check the consistency of the observed Stellar Mass Function (SMF), SFR functions and the cosmic star formation rate density with simple backward evolutionary models. Starting from observed SMF for star-forming…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Samuel Boissier , Veronique Buat , Olivier Ilbert

We present a study of the spatial distribution and kinematics of star-forming galaxies in 30 massive clusters at 0.15<z<0.30, combining wide-field Spitzer 24um and GALEX NUV imaging with highly-complete spectroscopy of cluster members. The…

Astrophysics of Galaxies · Physics 2015-06-17 C. P. Haines , M. J. Pereira , G. P. Smith , E. Egami , A. Babul , A. Finoguenov , F. Ziparo , S. L. McGee , T. D. Rawle , N. Okabe , S. M. Moran

The so-called star-forming main sequence of galaxies is the apparent tight relationship between the star formation rate and stellar mass of a galaxy. Previous studies exclude galaxies which are not strictly 'star forming' from the main…

Astrophysics of Galaxies · Physics 2016-02-10 Sarah K. Leslie , Lisa J. Kewley , David B. Sanders , Nicholas Lee

The central regions of star-forming barred spiral galaxies can be devoid of star formation because of the redistribution of gas along the length of the bar. However, there can be gas outside the length of the bar that can host star…

Astrophysics of Galaxies · Physics 2021-07-28 Koshy George , Smitha Subramanian

We present deep GMOS-S spectroscopy for 11 galaxy groups at 0.8<z<1.0, for galaxies with r_{AB}<24.75. Our sample is highly complete (>66%) for eight of the eleven groups. Using an optical-NIR colour-colour diagram, the galaxies in the…