The ROSAT deep survey VII. RX J105343+5735: A massive cluster at z = 1.263

D. Thompson, L. Pozzetti, G. Hasinger, I. Lehmann, M. Schmidt, B. T. Soifer, G. Szokoly, G. Wilson, G. Zamorani

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

The eastern lobe of the unusual double-lobed extended X-ray source RX J105343+5735 is confirmed to be a massive cluster at high redshift. Deep optical and near-infrared imaging show an overdensity of galaxies in both X-ray lobes, including a significant excess of red galaxies (R - K > 5.3) with colors typical of elliptical galaxies at z > 1. We have used new photometry to place better constraints on the redshifts of the cluster galaxies. A Keck NIRSPEC spectrum of one of the bright central galaxies in the eastern lobe shows a narrow Hα emission line at 1.485 microns, yielding a redshift of 1.263. The [OII] λ3727 Å line from the gravitationally lensed arc is also detected, giving a redshift of 2.577 for the lensed galaxy and confirming prior measurements. The improbability of chance alignment and similarity of colors for the galaxies in the two X-ray lobes are consistent with the western lobe also being at z = 1.26. The system may thus represent a pair of clusters in the process of merging.

Original languageEnglish
Pages (from-to)778-783
Number of pages6
JournalAstronomy and Astrophysics
Volume377
Issue number3
Publication statusPublished - Oct 2001

Fingerprint

lobes
galaxies
near infrared
color
x rays
elliptical galaxies
photometry
arcs
alignment

Keywords

  • Cosmology: observations
  • Distances and redshifts
  • Galaxies: clusters
  • Gravitational lensing
  • Infrared: galaxies
  • X-rays: galaxies

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Thompson, D., Pozzetti, L., Hasinger, G., Lehmann, I., Schmidt, M., Soifer, B. T., ... Zamorani, G. (2001). The ROSAT deep survey VII. RX J105343+5735: A massive cluster at z = 1.263. Astronomy and Astrophysics, 377(3), 778-783.

The ROSAT deep survey VII. RX J105343+5735 : A massive cluster at z = 1.263. / Thompson, D.; Pozzetti, L.; Hasinger, G.; Lehmann, I.; Schmidt, M.; Soifer, B. T.; Szokoly, G.; Wilson, G.; Zamorani, G.

In: Astronomy and Astrophysics, Vol. 377, No. 3, 10.2001, p. 778-783.

Research output: Contribution to journalArticle

Thompson, D, Pozzetti, L, Hasinger, G, Lehmann, I, Schmidt, M, Soifer, BT, Szokoly, G, Wilson, G & Zamorani, G 2001, 'The ROSAT deep survey VII. RX J105343+5735: A massive cluster at z = 1.263', Astronomy and Astrophysics, vol. 377, no. 3, pp. 778-783.
Thompson D, Pozzetti L, Hasinger G, Lehmann I, Schmidt M, Soifer BT et al. The ROSAT deep survey VII. RX J105343+5735: A massive cluster at z = 1.263. Astronomy and Astrophysics. 2001 Oct;377(3):778-783.
Thompson, D. ; Pozzetti, L. ; Hasinger, G. ; Lehmann, I. ; Schmidt, M. ; Soifer, B. T. ; Szokoly, G. ; Wilson, G. ; Zamorani, G. / The ROSAT deep survey VII. RX J105343+5735 : A massive cluster at z = 1.263. In: Astronomy and Astrophysics. 2001 ; Vol. 377, No. 3. pp. 778-783.
@article{0c4c052b91f84e9a91c8527c45a67e18,
title = "The ROSAT deep survey VII. RX J105343+5735: A massive cluster at z = 1.263",
abstract = "The eastern lobe of the unusual double-lobed extended X-ray source RX J105343+5735 is confirmed to be a massive cluster at high redshift. Deep optical and near-infrared imaging show an overdensity of galaxies in both X-ray lobes, including a significant excess of red galaxies (R - K > 5.3) with colors typical of elliptical galaxies at z > 1. We have used new photometry to place better constraints on the redshifts of the cluster galaxies. A Keck NIRSPEC spectrum of one of the bright central galaxies in the eastern lobe shows a narrow Hα emission line at 1.485 microns, yielding a redshift of 1.263. The [OII] λ3727 {\AA} line from the gravitationally lensed arc is also detected, giving a redshift of 2.577 for the lensed galaxy and confirming prior measurements. The improbability of chance alignment and similarity of colors for the galaxies in the two X-ray lobes are consistent with the western lobe also being at z = 1.26. The system may thus represent a pair of clusters in the process of merging.",
keywords = "Cosmology: observations, Distances and redshifts, Galaxies: clusters, Gravitational lensing, Infrared: galaxies, X-rays: galaxies",
author = "D. Thompson and L. Pozzetti and G. Hasinger and I. Lehmann and M. Schmidt and Soifer, {B. T.} and G. Szokoly and G. Wilson and G. Zamorani",
year = "2001",
month = "10",
language = "English",
volume = "377",
pages = "778--783",
journal = "Astronomy and Astrophysics",
issn = "0004-6361",
publisher = "EDP Sciences",
number = "3",

}

TY - JOUR

T1 - The ROSAT deep survey VII. RX J105343+5735

T2 - A massive cluster at z = 1.263

AU - Thompson, D.

AU - Pozzetti, L.

AU - Hasinger, G.

AU - Lehmann, I.

AU - Schmidt, M.

AU - Soifer, B. T.

AU - Szokoly, G.

AU - Wilson, G.

AU - Zamorani, G.

PY - 2001/10

Y1 - 2001/10

N2 - The eastern lobe of the unusual double-lobed extended X-ray source RX J105343+5735 is confirmed to be a massive cluster at high redshift. Deep optical and near-infrared imaging show an overdensity of galaxies in both X-ray lobes, including a significant excess of red galaxies (R - K > 5.3) with colors typical of elliptical galaxies at z > 1. We have used new photometry to place better constraints on the redshifts of the cluster galaxies. A Keck NIRSPEC spectrum of one of the bright central galaxies in the eastern lobe shows a narrow Hα emission line at 1.485 microns, yielding a redshift of 1.263. The [OII] λ3727 Å line from the gravitationally lensed arc is also detected, giving a redshift of 2.577 for the lensed galaxy and confirming prior measurements. The improbability of chance alignment and similarity of colors for the galaxies in the two X-ray lobes are consistent with the western lobe also being at z = 1.26. The system may thus represent a pair of clusters in the process of merging.

AB - The eastern lobe of the unusual double-lobed extended X-ray source RX J105343+5735 is confirmed to be a massive cluster at high redshift. Deep optical and near-infrared imaging show an overdensity of galaxies in both X-ray lobes, including a significant excess of red galaxies (R - K > 5.3) with colors typical of elliptical galaxies at z > 1. We have used new photometry to place better constraints on the redshifts of the cluster galaxies. A Keck NIRSPEC spectrum of one of the bright central galaxies in the eastern lobe shows a narrow Hα emission line at 1.485 microns, yielding a redshift of 1.263. The [OII] λ3727 Å line from the gravitationally lensed arc is also detected, giving a redshift of 2.577 for the lensed galaxy and confirming prior measurements. The improbability of chance alignment and similarity of colors for the galaxies in the two X-ray lobes are consistent with the western lobe also being at z = 1.26. The system may thus represent a pair of clusters in the process of merging.

KW - Cosmology: observations

KW - Distances and redshifts

KW - Galaxies: clusters

KW - Gravitational lensing

KW - Infrared: galaxies

KW - X-rays: galaxies

UR - http://www.scopus.com/inward/record.url?scp=0035473729&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035473729&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0035473729

VL - 377

SP - 778

EP - 783

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

SN - 0004-6361

IS - 3

ER -