The Spiderweb Galaxy: A Forming Massive Cluster Galaxy at
                    <i>z</i>
                    ~ 2

Miley, G. K.; Overzier, Roderik; Zirm, A.; Ford, H. C.; Kurk, J.; Pentericci, L.; Blakeslee, John P.; Franx, Marijn; Illingworth, G. D.; Postman, Marc; Rosati, P.; Röttgering, H. J. A.; Venemans, Bram; Helder, E. A.

doi:10.1086/508534

Cited by 146 publications

(205 citation statements)

References 26 publications

(42 reference statements)

Supporting

Mentioning

196

Contrasting

Order By: Relevance

“…Spectroscopy is required to prove the association of these objects with the radio galaxy but their physical closeness and colours strongly suggest that they are associated with MRC 0156-252. The scale of this system is similar to the structure associated with PKS 1138-262 i.e., about 15 (see Miley et al 2006, Fig. 2).…”

Section: The Yhk-selected Galaxiessupporting

confidence: 57%

Galaxy protocluster candidates at 1.6 < z ≲ 2

Galametz

Vernet

Breuck

et al. 2010

A&A

View full text Add to dashboard Cite

We present a study of protoclusters associated with high redshift radio galaxies. We imaged MRC 1017-220 (z = 1.77) and MRC 0156-252 (z = 2.02) using the near-infrared wide-field (7.5 × 7.5 ) imager VLT/HAWK-I in the Y, H, and K s bands. We present the first deep Y-band galaxy number counts within a large area (∼200 arcmin 2 ). We develop a purely near-infrared colour selection technique to isolate galaxies at 1.6 < z < 3 that may be associated with the two targets, dividing them into (i) red passively evolving or dusty star forming galaxies or (ii) blue/star formation dominated galaxies with little or no dust. Both targeted fields show an excess of star forming galaxies with respect to control fields. No clear overdensity of red galaxies is detected in the surroundings of MRC 1017-220 although the spatial distribution of the red galaxies resembles a filament-like structure within which the radio galaxy is embedded. In contrast, a significant overdensity of red galaxies is detected in the field of MRC 0156-252, ranging from a factor of ∼2−3 times the field density at large scales (2.5 Mpc, angular distance) up to a factor of ∼3−4 times the field density within a 1 Mpc radius of the radio galaxy. Half of these red galaxies have colours consistent with red sequence models at z ∼ 2, with a large fraction being bright (K s < 21.5, i.e. massive). In addition, we also find three galaxies within 5 of MRC 0156-252 suggesting that the radio galaxy has multiple companions within ∼50 kpc. We conclude that the field of MRC0156-252 shows many remarkable similarities with the wellstudied protocluster surrounding PKS1138-262 (z = 2.16) suggesting that MRC 0156-252 is associated with a galaxy protocluster at z ∼ 2.

show abstract

Section: The Yhk-selected Galaxiessupporting

confidence: 57%

Galaxy protocluster candidates at 1.6 < z ≲ 2

Galametz

Vernet

Breuck

et al. 2010

A&A

View full text Add to dashboard Cite

show abstract

“…Extended gas disks within the radio galaxy Best (2000) pointed out that radio galaxies with very extended radio sources are particularly good candidates for being cluster central galaxies because the pressure from the Mpc-scale intracluster medium boosts the luminosity of the radio source even for comparably extended jets (see also Athreya et al 1998;Klamer et al 2006). Many authors have previously suggested that the progenitors of brightest cluster galaxies are likely to be found among HzRGs (e.g., Pentericci et al 2001;Miley et al 2006;Hatch et al 2009), andWylezalek et al (2013) find from IRAC imaging that TXS 2353-003 is even associated with the most strongly pronounced overdensity within their sample.…”

Section: Partial Agn Illumination Of Ambient Halo Cloudsmentioning

confidence: 99%

Defying jet-gas alignment in two radio galaxies atz~ 2 with extended light profiles: Similarities to brightest cluster galaxies

Collet

Nesvadba

Breuck

et al. 2015

A&A

View full text Add to dashboard Cite

We report the detection of extended warm ionized gas in two powerful high-redshift radio galaxies, NVSS J210626-314003 at z = 2.10 and TXS 2353-003 at z = 1.49, that does not appear to be associated with the radio jets. This is contrary to what would be expected from the alignment effect, a characteristic feature of distant, powerful radio galaxies at z ≥ 0.6. The gas also has smaller velocity gradients and line widths than most other high-z radio galaxies with similar data. Both galaxies are part of a systematic study of 50 high-redshift radio galaxies with SINFONI, and are the only two that are characterized by the presence of high surface-brightness gas not associated with the jet axis and by the absence of such gas aligned with the jet. Both galaxies are spatially resolved with ISAAC broadband imaging covering the rest-frame R band, and have extended wings that cannot be attributed to line contamination. We argue that the gas and stellar properties of these galaxies are more akin to gas-rich brightest cluster galaxies in cool-core clusters than the general population of high-redshift radio galaxies at z > ∼ 2. In support of this interpretation, one of our sources, TXS 2353-003, for which we have Hα narrowband imaging, is associated with an overdensity of candidate Hα emitters by a factor of ∼8 relative to the field at z = 1.5. We discuss possible scenarios of the evolutionary state of these galaxies and the nature of their emission line gas within the context of cyclical AGN feedback.

show abstract

“…The z and H-band data were reduced in a standard manner. We further supplemented the data set with superb resolution imaging by the ACS on-board the HST (Miley et al 2006). We retrieved the pipeline reduced g and I band images from the Hubble Legacy Archive.…”

Section: Pks1138mentioning

confidence: 99%

The environmental dependence of galaxy properties atz = 2

Tanaka¹,

Breuck²,

Venemans³

et al. 2010

A&A

View full text Add to dashboard Cite

We report on the environmental dependence of galaxy properties at z = 2.15. We construct multi-band photometric data sets in the (proto-)cluster PKS1138-26 field and in the GOODS field. We then fit spectral energy distributions of the galaxies with model templates generated with the latest stellar population synthesis code and derive physical properties of galaxies from the fits. To quantify the environmental dependence of galaxy properties, a special care is taken of systematic errors -we use data sets that have almost the same wavelength samplings, use the same code to fit SEDs with the same set of templates, and compare relative differences between the two samples. We find that the PKS1138 galaxies have similar ages, shorter star formation time scales, lower star formation rates, and weaker dust extinction compared to the GOODS galaxies at z ∼ 2. This trend is similar to that observed locally, suggesting that the environmental dependence of galaxy properties is already partly in place as early as z = 2.15. We show that the PKS1138 galaxies assemble the bulk of their masses ∼1 Gyr earlier than field galaxies, i.e., the galaxy formation depends on environment. Galaxy mergers should frequently occur during the first collapse of clusters and they might play an important role in driving the observed environmental dependence of galaxy properties at z = 2.15.

show abstract

The Spiderweb Galaxy: A Forming Massive Cluster Galaxy at z ~ 2

Cited by 146 publications

References 26 publications

Galaxy protocluster candidates at 1.6 < z ≲ 2

Galaxy protocluster candidates at 1.6 < z ≲ 2

Defying jet-gas alignment in two radio galaxies atz~ 2 with extended light profiles: Similarities to brightest cluster galaxies

The environmental dependence of galaxy properties atz = 2

Contact Info

Product

Resources

About