1RXS J214303.7+065419/RBS 1774: A new isolated neutron star candidate

被引：50

作者：

Zampieri, L

Campana, S

Turolla, R

Chieregato, M

Falomo, R

Fugazza, D

Moretti, A

Treves, A

机构：

[1] Osserv Astron Padova, I-35122 Padua, Italy

[2] Univ Padua, Dipartimento Fis, I-35131 Padua, Italy

[3] Osserv Astron Brera, I-23807 Merate, Italy

[4] Univ Insubria, Dipartimento Sci, I-22100 Como, Italy

来源：

ASTRONOMY & ASTROPHYSICS | 2001年 / 378卷 / 01期

关键词：

stars : individual : 1RXS J214303.7+065419/RBS 1774; stars : neutron; X-rays : stars;

D O I：

10.1051/0004-6361:20011151

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report on the identification of a new possible Isolated Neutron Star candidate in archival ROSAT observations. The source 1RXS J214303.7+065419, listed in the ROSAT Bright Source Catalogue as RBS 1774, is very soft, exhibits a thermal spectrum well fitted by a blackbody at T similar to 90 eV and has a low column density, N-H similar to 5 x 10(20) cm(-2). Catalogue searches revealed no known sources in other energy bands close to the X-ray position of RBS 1774. Follow-up optical observations with NTT showed no peculiar object within the X-ray error circle. The absence of any plausible optical counterpart down to m(R) similar to 23 results in an X-ray to optical flux ratio in excess of 1000.

引用

页码：L5 / L9

页数：5

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