2017A&A...598A..69H


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST13:30:27

2017A&A...598A..69H - Astronomy and Astrophysics, volume 598A, 69-69 (2017/2-1)

EXTraS discovery of two pulsators in the direction of the LMC: a Be/X-ray binary pulsar in the LMC and a candidate double-degenerate polar in the foreground.

HABERL F., ISRAEL G.L., RODRIGUEZ CASTILLO G.A., VASILOPOULOS G., DELVAUX C., DE LUCA A., CARPANO S., ESPOSITO P., NOVARA G., SALVATERRA R., TIENGO A., D'AGOSTINO D. and UDALSKI A.

Abstract (from CDS):

Context. The Exploring the X-ray Transient and variable Sky (EXTraS) project searches for coherent signals in the X-ray archival data of XMM-Newton.
Aims. XMM-Newton performed more than 400 pointed observations in the region of the Large Magellanic Cloud (LMC). We inspected the results of the EXTraS period search to systematically look for new X-ray pulsators in our neighbour galaxy.
Methods. We analysed the XMM-Newton observations of two sources from the 3XMM catalogue which show significant signals for coherent pulsations.
Results. 3XMM J051259.8-682640 was detected as a source with a hard X-ray spectrum in two XMM-Newton observations, revealing a periodic modulation of the X-ray flux with 956s. As optical counterpart we identify an early-type star with Hα emission. The OGLE I-band light curve exhibits a regular pattern with three brightness dips which mark a period of ∼1350d. The X-ray spectrum of 3XMM J051034.6-670353 is dominated by a super-soft blackbody-like emission component (kT∼70eV) which is modulated by nearly 100% with a period of ∼1418s. From GROND observations we suggest a star with r'=20.9mag as a possible counterpart of the X-ray source.
Conclusions. 3XMM J051259.8-682640 is confirmed as a new Be/X-ray binary pulsar in the LMC. We discuss the long-term optical period as the likely orbital period which would be the longest known from a high-mass X-ray binary. The spectral and temporal properties of the super-soft source 3XMM J051034.6-670353 are very similar to those of RX J0806.3+1527 and RX J1914.4+2456 suggesting that it belongs to the class of double-degenerate polars and is located in our Galaxy rather than in the LMC.

Abstract Copyright: © ESO, 2017

Journal keyword(s): galaxies: star clusters: individual: Large Magellanic Cloud - galaxies: stellar content - stars: emission-line, Be - stars: neutron - binaries: close - novae, cataclysmic variables

CDS comments: Table 3, fig. 9 : stars 1,2,3 not identified.

Simbad objects: 21

goto Full paper

goto View the reference in ADS

Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10902 1
2 RX J004253.0+411533 X 00 42 52.528 +41 15 40.20           ~ 27 0
3 3XMM J004301.4+413017 XB* 00 43 01.46 +41 30 17.0           ~ 5 0
4 NAME M31PSS CV* 00 43 19.59 +41 17 56.9           ~ 22 0
5 2XMMi J004319.9+411346 No* 00 43 20.00 +41 13 46.0       17.0   ~ 28 0
6 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9440 1
7 [MA93] 1641 HXB 01 07 44.2311639413 -72 27 41.106327007   15.402 15.482   15.255 ~ 9 0
8 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5665 1
9 3XMM J051034.6-670353 CV? 05 10 34.78 -67 03 54.2           ~ 2 0
10 V* UU Col DQ* 05 12 13.2336376173 -32 41 39.746182397   17.72       ~ 38 0
11 [BE74] 226 Em* 05 12 59.993 -68 26 38.13   14.92 14.83 14.96   ~ 5 0
12 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
13 V* V405 Aur DQ* 05 57 59.2933859041 +53 53 44.925664551           ~ 111 0
14 V* MU Cam XB* 06 25 16.2520524762 +73 34 39.104874988       14.3   ~ 60 0
15 V* V418 Gem XB* 07 04 08.6690661945 +26 25 10.767757487           ~ 23 0
16 V* PQ Gem DQ* 07 51 17.3278781437 +14 44 23.875020784           ~ 205 0
17 RX J0806.3+1527 XB* 08 06 22.9519582696 +15 27 31.007381265   20.7     21.2 ~ 123 0
18 V* WX Pyx XB* 08 33 05.7636195407 -22 48 31.980759704   18.0       ~ 34 0
19 V* NY Lup XB* 15 48 14.5960047636 -45 28 39.918343697     14.50 14.42   K0/3Ve 80 1
20 V* V1323 Her CV* 18 03 39.6643567211 +40 12 20.266605309   17.3   17.2   ~ 17 0
21 RX J1914.4+2456 XB* 19 14 26.09 +24 56 44.6           ~ 121 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2017A&A...598A..69H and select 'bookmark this link' or equivalent in the popup menu


2020.07.04-13:30:27

© Université de Strasbourg/CNRS

    • Contact