| Issue |
A&A
Volume 378, Number 1, October IV 2001
|
|
|---|---|---|
| Page(s) | L5 - L9 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20011151 | |
| Published online | 15 October 2001 | |
1RXS J214303.7+065419/RBS 1774: A new Isolated Neutron Star candidate*
1
Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
2
Università di Padova, Dipartimento di Fisica, Via Marzolo 8, 35131 Padova, Italy
3
Osservatorio Astronomico di Brera, Via Bianchi 46, 23807 Merate, Italy
4
Università dell'Insubria, Dipartimento di Scienze, Via Valleggio 11, 22100 Como, Italy
Corresponding author: L. Zampieri zampieri@pd.astro.it
Received:
24
July
2001
Accepted:
14
August
2001
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 
eV and has a low column density, 
. 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 
results in an X-ray to optical flux ratio in excess of 1000.
Key words: stars: individual: 1RXS J214303.7+065419/RBS 1774 / stars: neutron / X-rays: stars
© ESO, 2001
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