Keck observations of candidate ultra-luminous X-ray sources

Diane Sonya Wong; Ryan Chornock; Alexei V. Filippenko

doi:10.1017/S1743921306008532

Keck observations of candidate ultra-luminous X-ray sources

Diane Sonya Wong^*, Ryan Chornock, Alexei V. Filippenko

^*Corresponding author for this work

Physics and Astronomy

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

Abstract

We present results of optical follow-up observations of candidate ultra-luminous X-ray sources (ULXs). Using Keck optical spectroscopy, 17 of the candidates from the Colbert & Ptak (2002) catalog have been identified; this is one of the largest sets of optical identifications of such objects thus far. 15 are background active galactic nuclei (AGN); 2 are foreground stars in our Galaxy. These findings are compared with background and foreground object expectations, as derived from log N-log S relations. Also, the results are briefly discussed in terms of the spiral-galaxy/ULX connection.

Original language	English (US)
Pages (from-to)	306-307
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	1
Issue number	S230
DOIs	https://doi.org/10.1017/S1743921306008532
State	Published - 2005

Keywords

Black hole physics
Catalogs
Galaxies: distances and redshifts
Galaxies: individual (NGC 720, NGC 1316, NGC 1365, NGC 1399, NGC 2775, NGC 3266, IC 2597, NGC 3923, NGC 4151, NGC 4373, NGC 5128)
Quasars: general
X-rays: galaxies

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1017/S1743921306008532

Cite this

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title = "Keck observations of candidate ultra-luminous X-ray sources",

abstract = "We present results of optical follow-up observations of candidate ultra-luminous X-ray sources (ULXs). Using Keck optical spectroscopy, 17 of the candidates from the Colbert & Ptak (2002) catalog have been identified; this is one of the largest sets of optical identifications of such objects thus far. 15 are background active galactic nuclei (AGN); 2 are foreground stars in our Galaxy. These findings are compared with background and foreground object expectations, as derived from log N-log S relations. Also, the results are briefly discussed in terms of the spiral-galaxy/ULX connection.",

keywords = "Black hole physics, Catalogs, Galaxies: distances and redshifts, Galaxies: individual (NGC 720, NGC 1316, NGC 1365, NGC 1399, NGC 2775, NGC 3266, IC 2597, NGC 3923, NGC 4151, NGC 4373, NGC 5128), Quasars: general, X-rays: galaxies",

author = "Wong, {Diane Sonya} and Ryan Chornock and Filippenko, {Alexei V.}",

year = "2005",

doi = "10.1017/S1743921306008532",

language = "English (US)",

volume = "1",

pages = "306--307",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press",

number = "S230",

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TY - JOUR

T1 - Keck observations of candidate ultra-luminous X-ray sources

AU - Wong, Diane Sonya

AU - Chornock, Ryan

AU - Filippenko, Alexei V.

PY - 2005

Y1 - 2005

N2 - We present results of optical follow-up observations of candidate ultra-luminous X-ray sources (ULXs). Using Keck optical spectroscopy, 17 of the candidates from the Colbert & Ptak (2002) catalog have been identified; this is one of the largest sets of optical identifications of such objects thus far. 15 are background active galactic nuclei (AGN); 2 are foreground stars in our Galaxy. These findings are compared with background and foreground object expectations, as derived from log N-log S relations. Also, the results are briefly discussed in terms of the spiral-galaxy/ULX connection.

AB - We present results of optical follow-up observations of candidate ultra-luminous X-ray sources (ULXs). Using Keck optical spectroscopy, 17 of the candidates from the Colbert & Ptak (2002) catalog have been identified; this is one of the largest sets of optical identifications of such objects thus far. 15 are background active galactic nuclei (AGN); 2 are foreground stars in our Galaxy. These findings are compared with background and foreground object expectations, as derived from log N-log S relations. Also, the results are briefly discussed in terms of the spiral-galaxy/ULX connection.

KW - Black hole physics

KW - Catalogs

KW - Galaxies: distances and redshifts

KW - Galaxies: individual (NGC 720, NGC 1316, NGC 1365, NGC 1399, NGC 2775, NGC 3266, IC 2597, NGC 3923, NGC 4151, NGC 4373, NGC 5128)

KW - Quasars: general

KW - X-rays: galaxies

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U2 - 10.1017/S1743921306008532

DO - 10.1017/S1743921306008532

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VL - 1

SP - 306

EP - 307

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

IS - S230

ER -

Keck observations of candidate ultra-luminous X-ray sources

Abstract

Keywords

ASJC Scopus subject areas

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