X-ray emission from the field of the hyperluminous IRAS galaxy IRAS F15307+3252

A. C. Fabian; R. M. Cutri; H. E. Smith; C. S. Crawford; W. N. Brandt

doi:10.1093/mnras/283.3.L95

X-ray emission from the field of the hyperluminous IRAS galaxy IRAS F15307+3252

A. C. Fabian, R. M. Cutri, H. E. Smith, C. S. Crawford, W. N. Brandt

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

We report on a 20-ks observation of the z = 0.93 hyperluminous galaxy IRAS F15307+3252 with the ROSAT HRI. No X-ray source is detected at the position of F15307+3252 at an upper limit of -4 × 10⁴³ erg s^-1 . This is less than 2 × 10_-4 of the bolometric luminosity of the object, and indicates either that the nucleus emits an unusually small fraction of its total power in X-rays, or that little of the nuclear X-ray flux is scattered into our line of sight by electrons. The lack of an X-ray detection around F15307+3252 also rules out it being at the centre of a cluster, such as is observed for IRAS P09104+4109. A weak, possibly extended, X-ray source is detected 13 arcsec south of the galaxy, spatially coincident with a clump of faint objects visible in a Keck K_s-band image of the field. This may be the core of a cluster near the line of sight to F15307+3252.

Original language	English (US)
Pages (from-to)	L95-L98
Journal	Monthly Notices of the Royal Astronomical Society
Volume	283
Issue number	3
DOIs	https://doi.org/10.1093/mnras/283.3.L95
State	Published - 1996

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1093/mnras/283.3.L95

Cite this

@article{68fe8170bc2b45e9b6faefb2140afb37,

title = "X-ray emission from the field of the hyperluminous IRAS galaxy IRAS F15307+3252",

abstract = "We report on a 20-ks observation of the z = 0.93 hyperluminous galaxy IRAS F15307+3252 with the ROSAT HRI. No X-ray source is detected at the position of F15307+3252 at an upper limit of -4 × 1043 erg s-1 . This is less than 2 × 10-4 of the bolometric luminosity of the object, and indicates either that the nucleus emits an unusually small fraction of its total power in X-rays, or that little of the nuclear X-ray flux is scattered into our line of sight by electrons. The lack of an X-ray detection around F15307+3252 also rules out it being at the centre of a cluster, such as is observed for IRAS P09104+4109. A weak, possibly extended, X-ray source is detected 13 arcsec south of the galaxy, spatially coincident with a clump of faint objects visible in a Keck Ks-band image of the field. This may be the core of a cluster near the line of sight to F15307+3252.",

author = "Fabian, {A. C.} and Cutri, {R. M.} and Smith, {H. E.} and Crawford, {C. S.} and Brandt, {W. N.}",

year = "1996",

doi = "10.1093/mnras/283.3.L95",

language = "English (US)",

volume = "283",

pages = "L95--L98",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "3",

}

TY - JOUR

T1 - X-ray emission from the field of the hyperluminous IRAS galaxy IRAS F15307+3252

AU - Fabian, A. C.

AU - Cutri, R. M.

AU - Smith, H. E.

AU - Crawford, C. S.

AU - Brandt, W. N.

PY - 1996

Y1 - 1996

N2 - We report on a 20-ks observation of the z = 0.93 hyperluminous galaxy IRAS F15307+3252 with the ROSAT HRI. No X-ray source is detected at the position of F15307+3252 at an upper limit of -4 × 1043 erg s-1 . This is less than 2 × 10-4 of the bolometric luminosity of the object, and indicates either that the nucleus emits an unusually small fraction of its total power in X-rays, or that little of the nuclear X-ray flux is scattered into our line of sight by electrons. The lack of an X-ray detection around F15307+3252 also rules out it being at the centre of a cluster, such as is observed for IRAS P09104+4109. A weak, possibly extended, X-ray source is detected 13 arcsec south of the galaxy, spatially coincident with a clump of faint objects visible in a Keck Ks-band image of the field. This may be the core of a cluster near the line of sight to F15307+3252.

AB - We report on a 20-ks observation of the z = 0.93 hyperluminous galaxy IRAS F15307+3252 with the ROSAT HRI. No X-ray source is detected at the position of F15307+3252 at an upper limit of -4 × 1043 erg s-1 . This is less than 2 × 10-4 of the bolometric luminosity of the object, and indicates either that the nucleus emits an unusually small fraction of its total power in X-rays, or that little of the nuclear X-ray flux is scattered into our line of sight by electrons. The lack of an X-ray detection around F15307+3252 also rules out it being at the centre of a cluster, such as is observed for IRAS P09104+4109. A weak, possibly extended, X-ray source is detected 13 arcsec south of the galaxy, spatially coincident with a clump of faint objects visible in a Keck Ks-band image of the field. This may be the core of a cluster near the line of sight to F15307+3252.

UR - http://www.scopus.com/inward/record.url?scp=0040044820&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0040044820&partnerID=8YFLogxK

U2 - 10.1093/mnras/283.3.L95

DO - 10.1093/mnras/283.3.L95

M3 - Article

AN - SCOPUS:0040044820

SN - 0035-8711

VL - 283

SP - L95-L98

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 3

ER -

X-ray emission from the field of the hyperluminous IRAS galaxy IRAS F15307+3252

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this