TY - JOUR
T1 - LoCuSS
T2 - A Herschel view of obscured star formation in Abell 1835
AU - Pereira, M. J.
AU - Haines, C. P.
AU - Smith, G. P.
AU - Egami, E.
AU - Moran, S. M.
AU - Finoguenov, A.
AU - Hardegree-Ullman, E.
AU - Okabe, N.
AU - Rawle, T.
AU - Rex, M.
PY - 2010/7/16
Y1 - 2010/7/16
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 - Galaxies: evolution
KW - Galaxies: star formation
KW - Infrared: galaxies
UR - http://www.scopus.com/inward/record.url?scp=77957837756&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77957837756&partnerID=8YFLogxK
U2 - 10.1051/0004-6361/201014695
DO - 10.1051/0004-6361/201014695
M3 - Article
AN - SCOPUS:77957837756
SN - 0004-6361
VL - 518
JO - Astronomy and astrophysics
JF - Astronomy and astrophysics
IS - 7-8
M1 - L40
ER -