The effect of environment on star forming galaxies at redshift 1 - First insight from PACS

Abstract

We use deep 70, 100 and 160 um observations taken with PACS, the Photodetector Array Camera and Spectrometer on board of Herschel, as part of the PACS Evolutionary Probe (PEP) guaranteed time, to study the relation between star formation rate and environment at redshift ~ 1 in the GOODS-S and GOODS-N fields. We use the SDSS spectroscopic catalog to build the local analog and study the evolution of the star formation activity dependence on the environment. At z ~ 1 we observe a reversal of the relation between star formation rate and local density, confirming the results based on Spitzer 24 um data. However, due to the high accuracy provided by PACS in measuring the star formation rate also for AGN hosts, we identify in this class of objects the cause for the reversal of the density-SFR relation. Indeed, AGN hosts favor high stellar masses, dense regions and high star formation rates. Without the AGN contribution the relation flattens consistently with respect to the local analog in the same range of star formation rates. As in the local universe, the specific star formation rate anti-correlates with the density. This is due to mass segregation both at high and low redshift. The contribution of AGN hosts does not affect this anti-correlation, since AGN hosts exhibit the same specific star formation rate as star forming galaxies at the same mass. The same global trends and AGN contribution is observed once the relations are studied per morphological type. We study the specific star formation rate vs stellar mass relation in three density regimes. Our data provides an indication that at M/M_{\odot} > 10^{11} the mean specific star formation rate tends to be higher at higher density, while the opposite trend is observed in the local SDSS star forming sample.

10 pages, 16 figures, accepted for publication on A&A

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• On the evolution and environmental dependence of the star formation rate versus stellar mass relation since z~2
• On the Last 10 Billion Years of Stellar Mass Growth in Star-Forming Galaxies
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• The GOGREEN Survey: A deep stellar mass function of cluster galaxies at 1.0<z<1.4 and the complex nature of satellite quenching
• The GOGREEN survey: The environmental dependence of the star-forming galaxy main sequence at $1.0<z<1.5$
• The evolution of the star formation activity per halo mass up to redshift ~ 1.6 as seen by Herschel
• A First Site of Galaxy Cluster Formation: Complete Spectroscopy of a Protocluster at $z=6.01$
• The GOGREEN survey: Post-infall environmental quenching fails to predict the observed age difference between quiescent field and cluster galaxies at z>1
• GOODS-Herschel: the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies
• The Roles of Mass and Environment in the Quenching of Galaxies. II
• The main sequence of star forming galaxies II. A non evolving slope at the high mass end
• Reversal or no reversal: the evolution of the star formation rate-density relation up to z~1.6
• Conditional Quenching: A detailed look at the SFR-Density Relation at z ~ 0.9 from ORELSE
• Dust-obscured star-formation in the outskirts of XMMU J2235.3-2557, a massive galaxy cluster at z=1.4
• The lack of star formation gradients in galaxy groups up to z~1.6
• Investigating the Stellar Mass Growth Histories of Satellite Galaxies as a Function of Infall Time using Phase-Space
• The effect of cosmic web filaments on galaxy evolution
• VIS3COS: III. environmental effects on the star formation histories of galaxies at z~0.8 seen in [OII], H$\delta$, and Dn4000
• Quantifying the suppression of the (un)-obscured star formation in galaxy cluster cores at 0.2$\lesssim$$z$$\lesssim$0.9
• The evolution of galaxy star formation activity in massive halos
• Large Scale Structures in COSMOS2020: Evolution of Star Formation Activity in Different Environments at 0.4 < z < 4
• Galaxy Rotation Coherent with the Motions of Neighbors: Discovery of Observational Evidence
• A z~3 radio galaxy and its protocluster: evidence for a superstructure?
• Serendipitous detection of an overdensity of Herschel-SPIRE 250 micron sources south of MRC1138-26
• The dominance of quenching through cosmic times
• The evolution of star formation activity in galaxy groups
• Multi-wavelength landscape of the young galaxy cluster RXJ1257.2+4738 at z=0.866: I. The infrared view
• The XXL Survey: XXXVII. The role of the environment in shaping the stellar population properties of galaxies at 0.1<z<0.5
• On the Reversal of SFR-Density Relation at z=1: Insights from Simulations
• The effect of disk inclination on the Main Sequence of star forming galaxies
• Star-formation rates of cluster galaxies: nature vs nurture
• The Roles of Mass and Environment in the Quenching of Galaxies
• Low frequency radio continuum imaging and SED modeling of 11 LIRGs: radio-only and FUV to radio bands
• The Local Cluster Survey II: Disk-Dominated Cluster Galaxies with Suppressed Star Formation
• The slowly evolving role of environment in a spectroscopic survey of star formation in Mstar > 5E8 Msun galaxies since z=1
• Quantifying the Impact of Incompleteness on Identifying and Interpreting Galaxy Protocluster Populations with the TNG-Cluster Simulation
• Impact of cosmic web on the properties of galaxies in IllustrisTNG simulations
• Measurable Relationship Between Bright Galaxies and Their Faint Companions in WHL J085910.0+294957, a Galaxy Cluster at z = 0.30: Vestiges of Infallen Groups?
• Euclid view of dusty star forming galaxies at z>~1.5 detected in wide area submillimetre surveys
• The HST-Hyperion Survey: Companion Fraction and Overdensity in a z ~ 2.5 Proto-supercluster
• ALMA Lensing Cluster Survey: average dust, gas, and star formation properties of cluster and field galaxies from stacking analysis
• Star formation quenching precedes morphological transformation in COSMOS-WEB's richest galaxy groups
• A new technique to isolate kinematically anomalous gas in HI data cubes
• Noema formIng Cluster survEy (NICE): A Census of Star Formation and Cold Gas Properties in Massive protoclusters at 1.5<z<4
• Lack of influence of the environment in the earliest stages of massive galaxy formation