Searching for X-ray sources in nearby late-type galaxies with low-star formation rates

K Chatterjee; P Kaaret; M Brorby; J. J. E Kajava; F Grisé; S Farrell; J Poutanen

doi:10.1093/mnras/stv2888

Back

Searching for X-ray sources in nearby late-type galaxies with low-star formation rates

Journal article

Peer reviewed

Searching for X-ray sources in nearby late-type galaxies with low-star formation rates

K Chatterjee, P Kaaret, M Brorby, J. J. E Kajava, F Grisé, S Farrell and J Poutanen

Monthly notices of the Royal Astronomical Society, Vol.456(3), pp.2966-2973

03/01/2016

DOI: 10.1093/mnras/stv2888

View Online

Abstract

Late-type non-starburst galaxies have been shown to contain X-ray emitting objects, some being ultraluminous X-ray sources. We report on XMM–Newton observations of 11 nearby, late-type galaxies previously observed with the Hubble Space Telescope (HST) in order to find such objects. We found 18 X-ray sources in or near the optical extent of the galaxies, most being point-like. If associated with the corresponding galaxies, the source luminosities range from 2 × 1037 erg s−1 to 6 × 1039 erg s−1. We found one ultraluminous X-ray source, which is in the galaxy IC 5052, and one source coincident with the galaxy IC 4662 with a blackbody temperature of 0.166 ± 0.015 keV that could be a quasi-soft source or a quiescent neutron star X-ray binary in the Milky Way. One X-ray source, XMMU J205206.0−691316, is extended and coincident with a galaxy cluster visible on an HST image. The X-ray spectrum of the cluster reveals a redshift of z = 0.25 ± 0.02 and a temperature of 3.6±0.4 keV. The redshift was mainly determined by a cluster of Fe xxiv lines between the observed energy range 0.8 − 1.0 keV.

X-rays: individual: XMMU J174709.9−643812, XMMU J205206.0−691316

galaxies: clusters: individual: XMMU J205206.0−691316

X-rays: binaries

X-rays: galaxies: clusters

X-rays: galaxies

Details

Title: Subtitle: Searching for X-ray sources in nearby late-type galaxies with low-star formation rates
Creators: K Chatterjee - Indian Institute of Technology Kharagpur
P Kaaret - University of Iowa
M Brorby - University of Iowa
J. J. E Kajava - Indian Institute of Technology Kharagpur
F Grisé - Université de Strasbourg
S Farrell - The University of Sydney
J Poutanen - University of Turku
Resource Type: Journal article
Publication Details: Monthly notices of the Royal Astronomical Society, Vol.456(3), pp.2966-2973
DOI: 10.1093/mnras/stv2888
ISSN: 0035-8711
eISSN: 1365-2966
Publisher: Oxford University Press
Language: English
Date published: 03/01/2016
Academic Unit: Physics and Astronomy
Record Identifier: 9984199810802771

Metrics

7 Record Views

2 Times Cited - Web of Science

See more details