SIMBAD references

2015MNRAS.449.4010K - Mon. Not. R. Astron. Soc., 449, 4010-4026 (2015/June-1)

SALT spectroscopic observations of galaxy clusters detected by ACT and a Type II quasar hosted by a brightest cluster galaxy.

KIRK B., HILTON M., CRESS C., CRAWFORD S.M., HUGHES J.P., BATTAGLIA N., BOND J.R., BURKE C., GRALLA M.B., HAJIAN A., HASSELFIELD M., HINCKS A.D., INFANTE L., KOSOWSKY A., MARRIAGE T.A., MENANTEAU F., MOODLEY K., NIEMACK M.D., SIEVERS J.L., SIFON C., WILSON S., WOLLACK E.J. and ZUNCKEL C.

Abstract (from CDS):

We present Southern African Large Telescope follow-up observations of seven massive clusters detected by the Atacama Cosmology Telescope (ACT) on the celestial equator using the Sunyaev-Zel'dovich (SZ) effect. We conducted multi-object spectroscopic observations with the Robert Stobie Spectrograph in order to measure galaxy redshifts in each cluster field, determine the cluster line-of-sight velocity dispersions, and infer the cluster dynamical masses. We find that the clusters, which span the redshift range 0.3 < z < 0.55, range in mass from (5-20)x1014 M☉ (M200c). Their masses, given their SZ signals, are similar to those of Southern hemisphere ACT clusters previously observed using Gemini and the VLT. We note that the brightest cluster galaxy in one of the systems studied, ACT-CL J0320.4+0032 at z = 0.38, hosts a type II quasar. Only a handful of such systems are currently known, and therefore ACT-CL J0320.4+0032 may be a rare example of a very massive halo in which quasar-mode feedback is actively taking place.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: clusters: general - galaxies: clusters: individual: ACT-CL J0320.4+0032 - quasars: general - cosmology: observations

VizieR on-line data: <Available at CDS (J/MNRAS/449/4010): table2.dat tablea1.dat tablea2.dat tablea3.dat tablea4.dat tablea5.dat tablea6.dat>

Nomenclature: Table 2: [KHC2015] ACT-CL J0320.4+0032 NNN N=40 among (Nos 4-427), Tablea1: [KHC2015] ACT-CL J0045.2-0152 NNN N=28 among (Nos 7-510), Tablea2: [KHC2015] ACT-CL J0156.4-0123 NNN N=27 among (Nos 6-468), Tablea3: [KHC2015] ACT-CL J0219.9+0129 NNN N=20 among (Nos 1-663), Tablea4: [KHC2015] ACT-CL J0342.7-0017 NNN N=28 among (Nos 2-521), Tablea5: [KHC2015] ACT-CL J0348.6-0028 NNN N=39 among (Nos 98-401), Tablea6: [KHC2015] ACT-CL J2058.8+0123 N=24 among (Nos 90-225).

CDS comments: Probable misprints: ZwCl 8029 = ZwCl 2089; 1H 1821+644 = H 1821+643.

Simbad objects: 221

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