Ultraluminous X-ray sources in seven edge-on spiral galaxies

被引：5

作者：

Dage, Kristen C. ^{[1
,2
,3
]}

Vowell, Noah ^{[3
,4
]}

Thygesen, Erica ^{[3
]}

Bahramian, Arash ^{[5
]}

Haggard, Daryl ^{[1
,2
]}

Kovlakas, Konstantinos ^{[6
]}

Kundu, Arunav ^{[7
]}

Maccarone, Thomas J. ^{[8
]}

Strader, Jay ^{[3
]}

Urquhart, Ryan ^{[3
]}

Zepf, Stephen E. ^{[3
]}

机构：

[1] McGill Univ, Dept Phys, 3600 Univ St, Montreal, PQ H3A 2T8, Canada

[2] McGill Univ, McGill Space Inst, 3600 Univ St, Montreal, PQ H3A 2A7, Canada

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[4] Univ Michigan, Dept Nat Sci, 4901 Evergreen Rd, Dearborn, MI 48128 USA

[5] Curtin Univ, Int Ctr Radio Astron Res, GPO Box U1987, Perth, WA 6845, Australia

[6] Univ Geneva, Geneva Observ, Chemin Maillettes 51, CH-1290 Versoix, Switzerland

[7] Eureka Sci Inc, 2452 Delmer St,Suite 100, Oakland, CA 94602 USA

[8] Texas Tech Univ, Dept Physicsand Astron, Box 41051,Sci Bldg, Lubbock, TX 79409 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2021年 / 508卷 / 03期

基金：

加拿大自然科学与工程研究理事会; 瑞士国家科学基金会; 美国国家科学基金会; 美国国家航空航天局;

关键词：

accretion; accretion discs; galaxies: spiral; X-rays: binaries; BLACK-HOLE; SPECTRAL VARIABILITY; DISCOVERY; ULX; STAR; TRANSIENT; EMISSION; CATALOG; PULSAR; ARRAY;

D O I：

10.1093/mnras/stab2850

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate a sample of seven edge-on spiral galaxies using Chandra observations. Edge-on spiral galaxies allow us to clearly separate source associated with their star-forming regions versus the outer edges of the system, offering a clear advantage over other systems. We uncover a number of X-ray point sources across these galaxies, and after eliminating contaminating foreground and background sources, we identify 12 candidate ultraluminous X-ray sources (ULXs). All of these sources are projected on to the central regions, implying that the majority of ULXs in this sample of spiral galaxies are disc/bulge, and thus not halo sources. This also includes two transient ULXs, which may be long-duration transients and low-mass X-ray binaries. This finding illustrates the need for further studies of transient ULXs.

引用

页码：4008 / 4016

页数：9

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