2011A&A...526A..94R

C.D.S. - SIMBAD4 rel 1.7 - 2019.12.10CET11:18:49

2011A&A...526A..94R - Astronomy and Astrophysics, volume 526A, 94-94 (2011/2-1)

On the nature of the break in the X-ray luminosity function of low-mass X-ray binaries.

REVNIVTSEV M., POSTNOV K., KURANOV A. and RITTER H.

Abstract (from CDS):

We analyze a flux-limited sample of persistent and bright (with 2-10keV fluxes exceeding 1.4x10^–10erg/s/cm2) low-mass X-ray binaries (LMXBs) in our Galaxy. It is demonstrated that the majority of binary systems with X-ray luminosities below logL(erg/s)∼37.3 have unevolved secondary companions (except for those with white dwarf donors), while systems with higher X-ray luminosity harbor predominantly giant donors. Mass transfer in binary systems with giants significantly shortens their lifetime thus steepening the X-ray luminosity function of LMXBs at high luminosity. We argue that this is why the LMXB luminosity function constructed from observations of sources in our and distant galaxies demonstrates a break at logL(erg/s)∼37.3.

Abstract Copyright: ∼

Journal keyword(s): binaries: general - stars: low-mass - stars: luminosity function, mass function - stars: neutron - X-rays: stars

Simbad objects: 41

Full paper

View the reference in ADS

Number of rows : 41

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Sp type	#ref 1850 - 2020	#notes
1	M 31	G	00 42 44.330	+41 16 07.50	4.86	4.36	3.44		~	10608	1
2	4U 0513-40	LXB	05 14 06.59	-40 02 37.0					~	148	1
3	M 1	SNR	05 34 31.94	+22 00 52.2					~	5492	4
4	V* V1055 Ori	LXB	06 17 07.3	+09 08 13		18.80	18.5		~	503	1
5	V* GR Mus	LXB	12 57 37.153	-69 17 18.98		19.40	19.1		~	239	0
6	NAME Centaurus A	Sy2	13 25 27.61509104	-43 01 08.8056025		8.18	6.84	6.66	~	3904	3
7	V* BR Cir	HXB	15 20 40.85	-57 10 00.1		21.4	21.4		~	710	1
8	V* QU TrA	LXB	15 47 54.6	-62 34 06					~	126	0
9	V* LU TrA	LXB	16 01 02.3	-60 44 18	18.35	19.05	18.6		~	79	0
10	V* V818 Sco	LXB	16 19 55.0688745859	-15 38 25.019920749	11.60	12.40	11.1		Oev	1515	0
11	NAME Big Dipper	LXB	16 28 05.5318316228	-49 12 40.011030945					~	204	0
12	V* KZ TrA	LXB	16 32 16.79	-67 27 39.3	17.40	18.60	18.5		~	521	1
13	V* V801 Ara	LXB	16 40 55.5	-53 45 05	17.50	18.20	17.5		~	775	1
14	4U 1642-45	LXB	16 45 47.7	-45 36 40					~	376	1
15	V* V1101 Sco	LXB	17 05 44.4915929414	-36 25 23.049863107		20.10	18.6		~	402	0
16	X Ara X-1	LXB	17 06 15.314	-43 02 08.69					~	229	1
17	4U 1705-32	LXB	17 08 54.40	-32 18 57.5					~	50	0
18	4U 1708-40	LXB	17 12 23.83	-40 50 34.0					~	57	0
19	4U 1722-30	LXB	17 27 33.25	-30 48 07.4					~	231	1
20	V* V2216 Oph	LXB	17 31 44.17	-16 57 40.9	16.40	17.10	16.8		~	260	1
21	V* V2116 Oph	Sy*	17 32 02.1544831482	-24 44 44.125962969		20.78	18.4		M6IIIe	644	1
22	V* V926 Sco	LXB	17 38 58.3	-44 27 00	16.90	17.70	17.5		~	422	0
23	NAME Gal Center	reg	17 45 40.04	-29 00 28.1					~	11082	0
24	2E 3943	LXB	17 46 05.20	-29 30 53.3					~	188	1
25	X Sgr X-1	LXB	17 47 56.0	-26 33 49					~	342	0
26	4U 1746-371	LXB	17 50 12.66	-37 03 08.2					~	180	1
27	4U 1758-25	LXB	18 01 09.7308941918	-25 04 44.128444504					~	609	1
28	X Sgr X-3	LXB	18 01 32.3	-20 31 44					~	217	1
29	V* V5512 Sgr	LXB	18 14 31.55	-17 09 26.7					K5III	347	0
30	4U 1812-12	LXB	18 15 06.15	-12 05 46.7					~	103	2
31	V* NP Ser	LXB	18 16 01.389	-14 02 10.62		18.8			K	595	2
32	X Sgr X-4	LXB	18 23 40.57	-30 21 40.6		19.06	18.81		~	891	1
33	4U 1823-00	LXB	18 25 22.02	-00 00 43.0		23.00	22		~	81	0
34	V* V691 CrA	LXB	18 25 46.8186056396	-37 06 18.529015318	14.30	15.20	15.1		~	396	0
35	V* V4634 Sgr	LXB	18 29 28.2	-23 47 49	18.90	19.40	19		~	280	0
36	V* MM Ser	LXB	18 39 57.56	+05 02 09.6		19.2	19.2		~	315	0
37	4U 1850-086	LXB	18 53 04.89	-08 42 19.7	20.40	21.20	21.0		~	228	1
38	Granat 1915+105	LXB	19 15 11.54938	+10 56 44.7585					~	2237	0
39	V* V1405 Aql	LXB	19 18 47.871	-05 14 17.09	20.90	21.40	21.0		~	434	0
40	V* V1341 Cyg	WV*	21 44 41.1544523872	+38 19 17.065856122	15.00	15.20	14.7		A9III	1060	0
41	NAME Galactic Bulge	reg	~	~					~	3261	0

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