LoCuSS: A Herschel view of obscured star formation in Abell 1835

MJ Pereira; Christopher Haines; Graham Smith; E Egami; SM Moran; A Finoguenov; E Hardegree-Ullman; N Okabe; T Rawle; M Rex

doi:10.1051/0004-6361/201014695

LoCuSS: A Herschel view of obscured star formation in Abell 1835

MJ Pereira, Christopher Haines, Graham Smith, E Egami, SM Moran, A Finoguenov, E Hardegree-Ullman, N Okabe, T Rawle, M Rex

Physics and Astronomy

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25 Citations (Scopus)

Abstract

We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically "relaxed" X-ray morphology and no signs of ongoing merger activity in strong-and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of star-forming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.

Original language	English
Pages (from-to)	L40
Journal	Astronomy and Astrophysics
Volume	518
DOIs	https://doi.org/10.1051/0004-6361/201014695
Publication status	Published - 1 Jul 2010

Keywords

galaxies: clusters: individual: A1835
infrared: galaxies
galaxies: star formation
galaxies: evolution

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10.1051/0004-6361/201014695

Birmingham Astrophysics - Rolling Grant 2007-2012
Ponman, T. (Principal Investigator), Cruise, M. (Co-Investigator), Freise, A. (Co-Investigator), Raychaudhury, S. (Co-Investigator), Smith, G. (Co-Investigator), Speake, C. (Co-Investigator), Stevens, I. (Co-Investigator) & Vecchio, A. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/07 → 31/03/12
Project: Research Councils

Cite this

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title = "LoCuSS: A Herschel view of obscured star formation in Abell 1835",

abstract = "We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically {"}relaxed{"} X-ray morphology and no signs of ongoing merger activity in strong-and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of star-forming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.",

keywords = "galaxies: clusters: individual: A1835, infrared: galaxies, galaxies: star formation, galaxies: evolution",

author = "MJ Pereira and Christopher Haines and Graham Smith and E Egami and SM Moran and A Finoguenov and E Hardegree-Ullman and N Okabe and T Rawle and M Rex",

year = "2010",

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doi = "10.1051/0004-6361/201014695",

language = "English",

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TY - JOUR

T1 - LoCuSS: A Herschel view of obscured star formation in Abell 1835

AU - Pereira, MJ

AU - Haines, Christopher

AU - Smith, Graham

AU - Egami, E

AU - Moran, SM

AU - Finoguenov, A

AU - Hardegree-Ullman, E

AU - Okabe, N

AU - Rawle, T

AU - Rex, M

PY - 2010/7/1

Y1 - 2010/7/1

N2 - We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically "relaxed" X-ray morphology and no signs of ongoing merger activity in strong-and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of star-forming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.

AB - We present Herschel/PACS, MMT/Hectospec and XMM-Newton observations of Abell 1835, one of the brightest X-ray clusters on the sky, and the host of a strong cool core. Even though Abell 1835 has a prototypically "relaxed" X-ray morphology and no signs of ongoing merger activity in strong-and weak-lensing mass maps, it has a complex velocity distribution, suggesting that it is still accreting significant amounts of mass in the form of smaller satellite systems. Indeed, we find strong dynamical segregation of star-forming dusty galaxies from the optically selected cluster population. Most Herschel sources are found close to the virial radius of the cluster, and almost a third appear to be embedded within a filament feeding the cluster from the SW. We find that the most luminous infrared galaxies are likely involved in galaxy-galaxy interactions that may have triggered the current phase of star formation.

KW - galaxies: clusters: individual: A1835

KW - infrared: galaxies

KW - galaxies: star formation

KW - galaxies: evolution

U2 - 10.1051/0004-6361/201014695

DO - 10.1051/0004-6361/201014695

M3 - Article

SN - 1432-0756

VL - 518

SP - L40

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

ER -

LoCuSS: A Herschel view of obscured star formation in Abell 1835

Abstract

Keywords

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Projects

Birmingham Astrophysics - Rolling Grant 2007-2012

Cite this