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X-ray emission from the field of the hyperluminous IRAS galaxy IRASF15307+3252

Fabian, A. C. and Cutri, R. M. and Smith, H. E. and Crawford, C. S. and Brandt, W. N. (1996) X-ray emission from the field of the hyperluminous IRAS galaxy IRASF15307+3252. Monthly Notices of the Royal Astronomical Society, 283 (3). L95-L98. ISSN 0035-8711. doi:10.1093/mnras/283.3.l95.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription
Fabian, A. C.0000-0002-9378-4072
Cutri, R. M.0000-0002-0077-2305
Brandt, W. N.0000-0002-0167-2453
Additional Information:© 1996 Royal Astronomical Society. Provided by the NASA Astrophysics Data System. Accepted 1996 September 23. Received 1996 July 22. ACF thanks the Royal Society for support, and CSC acknowledges support from the PPARC. RMC acknowledges the support of the Jet Propulsion Laboratory, Caltech, which is operated under contract with NASA. WNB thanks the United States National Science Foundation. We acknowledge the use of SkyView at Goddard Space Science Center.
Funding AgencyGrant Number
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Subject Keywords:galaxies: individual: IRAS F15307+3252, infrared: galaxies, X-rays: galaxies
Issue or Number:3
Record Number:CaltechAUTHORS:20200526-104631055
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Official Citation:A. C. Fabian, R. M. Cutri, H. E. Smith, C. S. Crawford, W. N. Brandt, X-ray emission from the field of the hyperluminous IRAS galaxy IRASF15307+3252, Monthly Notices of the Royal Astronomical Society, Volume 283, Issue 3, December 1996, Pages L95–L98,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:103445
Deposited By: Rebecca Minjarez
Deposited On:27 May 2020 16:04
Last Modified:16 Nov 2021 18:21

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