X-ray emission from the Sculptor galaxy NGC 300

被引:31
作者
Read, AM [1 ]
Pietsch, W [1 ]
机构
[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
关键词
galaxies : clusters : sculptor; galaxies : individual : NGC 300; galaxies : ISM; galaxies : spiral; X-rays : galaxies;
D O I
10.1051/0004-6361:20010636
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We report here the results of a full analysis of all the ROSAT PSPC spectral imaging observations and all the ROSAT HRI high resolution imaging observations of the very nearby (D = 2.1 Mpc) Sculptor galaxy, NGC 300. Many point sources are detected within the field, several of them showing evidence for variability, and we present full source lists detailing their X-ray properties, and attempt to classify them on the basis of their temporal, spectral and multi-wavelength characteristics. A black hole X-ray binary candidate, a supersoft source and several supernova remnants and H II regions are detected in X-rays, as is unresolved, possibly diffuse emission, accounting for perhaps similar to 20% of the total NGC 300 X-ray (0.1-2.4 keV) luminosity (5.8 x 10(38) erg s(-1)). We compare the X-ray source luminosity distribution of NGC 300 with that of other nearby galaxies, and we also compare NGC 300 with its Sculptor neighbours, concluding that it is a quite an unremarkable system, showing no unusual X-ray (or other multi-wavelength) properties. It may be one of the best examples of a completely typical normal quiescent late-type spiral galaxy.
引用
收藏
页码:473 / 484
页数:12
相关论文
共 39 条
[1]   A CATALOG OF RICH CLUSTERS OF GALAXIES [J].
ABELL, GO ;
CORWIN, HG ;
OLOWIN, RP .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1989, 70 (01) :1-138
[2]  
[Anonymous], 1983, IAU S
[3]   Identification of supernova remnants in the sculptor group galaxies NGC 300 and NGC 7793 [J].
Blair, WP ;
Long, KS .
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1997, 108 (01) :261-&
[4]   Galaxy redshifts in 3 medium-distant clusters [J].
Cappi, A ;
Held, EV ;
Marano, B .
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1998, 129 (01) :31-40
[5]   The Cambridge-Cambridge ROSAT serendipity survey .4. The X-ray properties [J].
Ciliegi, P ;
Elvis, M ;
Wilkes, BJ ;
Boyle, BJ ;
McMahon, RG .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1997, 284 (02) :401-415
[6]   The NRAO VLA Sky Survey [J].
Condon, JJ ;
Cotton, WD ;
Greisen, EW ;
Yin, QF ;
Perley, RA ;
Taylor, GB ;
Broderick, JJ .
ASTRONOMICAL JOURNAL, 1998, 115 (05) :1693-1716
[7]   Discovery of numerous dwarf galaxies in the two nearest groups of galaxies [J].
Cote, S ;
Freeman, KC ;
Carignan, C ;
Quinn, PJ .
ASTRONOMICAL JOURNAL, 1997, 114 (04) :1313-&
[8]  
CRUDDACE RG, 1988, ESO C P, V28, P177
[9]   The evolved red stellar contents of the sculptor group galaxies NGC 55, NGC 300, and NGC 7793 [J].
Davidge, TJ .
ASTROPHYSICAL JOURNAL, 1998, 497 (02) :650-661
[10]  
deVaucouleurs G., 1991, Third Reference Catalogue of Bright Galaxies. Volume I: Explanations and References, DOI DOI 10.1007/978-1-4757-4360-9