The Deep3 Galaxy Redshift Survey: Keck/Deimos Spectroscopy in the Goods-N Field

Cooper, Michael C.; Aird, James; Coil, Alison L.; Davis, Marc; Faber, S. M.; Juneau, Stéphanie; Lotz, Jennifer M.; Nandra, K.; Newman, Jeffrey A.; Willmer, Christopher N. A.; Yan, Renbin

doi:10.1088/0067-0049/193/1/14

Cited by 118 publications

(112 citation statements)

References 29 publications

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“…The spectroscopic information is taken from different spectroscopic surveys performed in this field. The AEGIS field, as part of the EGS field, has been targeted with the DEEP2 galaxy redshift survey (Davis et al 2003;Newman et al 2013) and it is the only field that has been a subject of extensive spectroscopic follow-up data in DEEP3 (Cooper et al 2011(Cooper et al , 2012. In the DEEP2 fields, EGS is the only field which is not colour selected, so it gives us a nearly complete sample with redshift.…”

Section: Aegismentioning

confidence: 99%

“…In addition, there is 150 ks of good XMMNewton exposure. The GOODS-N field is within the CDFN centres at RA =12 h 36 m 55 s , Dec. =+62 • 14 15 (J2000) and has become one of the most well-studied extragalactic fields in the sky with existing observations among the deepest at a broad range of wavelengths (e.g., Alexander et al 2003;Morrison et al 2010;Cooper et al 2011;Elbaz et al 2011). GOODS-N covers an area of approximately 10 arcmin × 16 arcmin (Giavalisco et al 2004).…”

Section: Cdfnmentioning

confidence: 99%

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The evolution of star formation activity in galaxy groups

Erfanianfar¹,

Popesso²,

Finoguenov³

et al. 2014

Monthly Notices of the Royal Astronomical Society

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We study the evolution of the total star formation (SF) activity, total stellar mass and halo occupation distribution in massive halos by using one of the largest X-ray selected sample of galaxy groups with secure spectroscopic identification in the major blank field surveys (ECDFS, CDFN, COSMOS, AEGIS). We provide an accurate measurement of SFR for the bulk of the star-forming galaxies using very deep midinfrared Spitzer MIPS and far-infrared Herschel PACS observations. For undetected IR sources, we provide a well-calibrated SFR from SED fitting. We observe a clear evolution in the level of SF activity in galaxy groups. The total SF activity in the high redshift groups (0.5

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Section: Aegismentioning

confidence: 99%

Section: Cdfnmentioning

confidence: 99%

The evolution of star formation activity in galaxy groups

Erfanianfar¹,

Popesso²,

Finoguenov³

et al. 2014

Monthly Notices of the Royal Astronomical Society

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“…We looked for spectroscopic identifications of these sources in the literature making use of several spectroscopic campaigns (Le Fèvre et al 2004;Szokoly et al 2004;Le Fèvre et al 2005;Mignoli et al 2005;Ravikumar et al 2007;Kriek et al 2008;Vanzella et al 2008;Taylor et al 2009;Treister et al 2009;van der Wel et al 2005;Balestra et al 2010;Silverman et al 2010;Casey et al 2011;Cooper et al 2011). To avoid possible spurious broad line detections caused by errors in the redshift estimate, which could produce a false line broadening, we used only sources with spectroscopic redshifts defined as secure in the literature.…”

Section: The X-ray Datamentioning

confidence: 99%

The XMM Deep survey in the CDF-S

Falocco¹,

Carrera²,

Corral³

et al. 2013

A&A

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Context. X-ray spectroscopy of active galactic nuclei (AGN) offers the opportunity to directly probe the inner regions of the accretion disk. Reflection of the primary continuum on the circumnuclear accreting matter produces features in the X-ray spectrum that help to explore the physics and the geometry of the innermost region, close to the central black hole. Aims. We present the results of our analysis of average AGN XMM-Newton X-ray spectra in the Chandra Deep Field South observation (hereafter, XMM CDFS), in order to explore the Fe line features in distant AGN up to z ∼ 3.5. Methods. We computed the average X-ray spectrum of a sample of 54 AGN with spectroscopic redshifts and signal-to-noise ratio in the 2-12 keV rest-frame band larger than 15 in at least one EPIC camera (for a total of 100 X-ray spectra and 181 623 net counts in the 2-12 keV rest-frame band). We have taken the effects of combining spectra from sources at different redshifts and from both EPIC-pn and EPIC-MOS cameras into account, as well as their spectral resolution; we checked our results using thorough simulations. We explored the iron line components of distant AGN focusing on the narrow core which arises from material far from the central BH and on the putative relativistic component emitted in the accretion disk.Results. The average spectrum shows a highly significant iron feature. Estimating its equivalent width (EW) with a model-independent method suggests a higher EW in a broader range. The line, modelled as an unresolved Gaussian, is significant at 6.8σ and has an EW = 95 ± 22 eV for the full sample. We find that our current data can be fitted equally well adding a relativistic profile to the narrow component (in the full sample, EW = 140 ± 120 eV and 67 ± 28 eV respectively for the relativistic and narrow lines). Conclusions. Thanks to the high quality of the XMM CDFS spectra and to the detailed modelling of the continuum and instrumental effects, we have shown that the most distant AGN exhibit a highly significant iron emission feature. It can be modelled both with narrow and broad lines which suggest that the EW becomes higher when a broader energy range around the line centroid is considered, provides tantalising evidence for reflection by material both very close and far away from the central engine. The EW of both features are similar to those observed in individual nearby AGN, hence they must be a widespread characteristic of AGN, since otherwise the average values would be smaller than observed.

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“…Among the sources in the band-merged catalog, we used 3630 and 3181 galaxies whose spectroscopic redshifts are reliable over the whole fields of GOODS-N (Cohen et al 2000;Cowie et al 2004;Wirth et al 2004;Reddy et al 2006;Barger et al 2008;Cooper et al 2011;Stern et al, in prep. ) and GOODS-S (Szokoly et al 2004;Le Fèvre et al 2004;Mignoli et al 2005;Vanzella et al 2005Vanzella et al , 2006Vanzella et al , 2008Ravikumar et al 2007;Popesso et al 2009;Kurk et al 2009;Balestra et al 2010;…”

Section: Goods Samplementioning

confidence: 99%

GOODS-Herschel: the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies

Hwang¹,

Elbaz²,

Dickinson³

et al. 2011

A&A

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Aims. We study the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies and its evolution at 0 < z < 1.2. Methods. Using the high-z galaxies in the fields of Great Observatories Origins Deep Survey (GOODS) observed by the Herschel Space Observatory in the framework of the GOODS-Herschel key program and the local IRAS or AKARI-selected galaxies in the field of Sloan Digital Sky Survey Data Release 7, we investigate the dependence of galaxy properties on the morphology of and the distance to the nearest neighbor galaxy. Results. We find that the star-formation rates (SFRs) and the specific SFRs (SSFRs) of galaxies on average depend on the morphology of and the distance to the nearest neighbor galaxy in this redshift range. When a late-type galaxy has a close neighbor galaxy, the SFR and the SSFR increase as it approaches a late-type neighbor, which is supported by Kolmogorov-Smirnov (K-S) and Monte Carlo (MC) tests with a significance level of >99%. However, the SFR and the SSFR decrease or do not change much as the galaxy approaches an early-type neighbor. The bifurcations of SFRs and SSFRs depending on the neighbor's morphology seem to occur at R n ≈ 0.5r vir,nei (virial radius of the neighbor), which is supported by K-S and MC tests with a significance level of >98%. For all redshift bins, the SSFRs of late-type galaxies interacting with late-type neighbors are increased by factors of about 1.8 ± 0.7 and 4.0 ± 1.2 compared to those of non-interacting galaxies when the pair separation is smaller than 0.5r vir,nei and 0.1r vir,nei , respectively. The dust temperature of both local and high-z late-type galaxies that strongly interact with late-type neighbors (i.e. R n ≤ 0.1r vir,nei ) appears to be higher than that of non-interacting galaxies with a significance level of 96−99%. However, the dust temperature of local late-type galaxies that strongly interact with early-type neighbors seems to be lower than or similar to that of non-interacting galaxies. Conclusions. Our results suggest that galaxy-galaxy interactions and mergers have been strongly affecting the SFR and the dust properties of star-forming galaxies over at least 8 billion years.

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The Deep3 Galaxy Redshift Survey: Keck/Deimos Spectroscopy in the Goods-N Field

Cited by 118 publications

References 29 publications

The evolution of star formation activity in galaxy groups

The evolution of star formation activity in galaxy groups

The XMM Deep survey in the CDF-S

GOODS-Herschel: the impact of galaxy-galaxy interactions on the far-infrared properties of galaxies

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