NEXXUS 2 - The database for Nearby X-ray and extreme UV emitting Stars

Star Page     -     NS 1855+2333 A   HIP 92919   HD 175742   BD+23 3500   V775 Her

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ROSAT Survey Field Image Browser     SIMBAD entry

Star Information:

RA (2000.0)	DE (2000.0)	μ [ "/yr ]	θ [ ° ]	Radial Velocity	Spectral Type	B	V	Distance [ pc ]
18 55 53.21	+23 33 23.76	0.312	155.2	-6	K0	9	8.09	21.49

ROSAT All-Sky Survey (RASS):

Detection Number	Count Rate	Background	Exposure Time	Likelihood	HR1	HR2	log Lx
1RXS J185557.3+233410	1.878 ± 0.05236	0.00073	648	3990	-0.11 ± 0.02	-0.02 ± 0.04	29.79

ROSAT Position Sensitive Proportional Counter (PSPC):

Detection Number	Sequence Id	Count Rate	Background	Likeli	OAX	Exposure Time	Observation Time	HR1	HR2	Images	log Lx
2RXP J185553.3+233327	200917 n00.003	2.267 ± 0.0334	0.0009	9999	3	2078	1993-04-08 to 1993-04-08	-0.1 ± 0.01	-0.02 ± 0.02	rgb rgbd	29.88

ROSAT Wide Field Camera (WFC) All-Sky Survey:

Detection Number	RA (2000.0)	DE (2000.0)	S1 Count Rate	S2 Count Rate	Significance S1	Significance S2	Significance
2RE J1855+233	18 55 53.72	+23 33 34.6	0.04 ± 0	0.06 ± 0.01	15.2	12.2	19.5

EUVE All-Sky Survey:

Detection Number	RA (2000.0)	DE (2000.0)	58-174 Å Count Rate	156-234 Å Count Rate	368-590 Å Count Rate	519-742 Å Count Rate
EUVE J1855+235	18 55 52	+23 33.8	0.064 ± 0.011	0.032 ± 0.013

Joint EUVE-ROSAT Detections:

Detection Number	RA (2000.0)	DE (2000.0)	58-174 Å Count Rate
EUVE J1855+235	18 55 57	+23 34 17	0.05

Last modified on Tuesday, 28 October 2008.   C. Liefke | Impressum