1999A&A...345..121H

Query : 1999A&A...345..121H

1999A&A...345..121H - Astronomy and Astrophysics, volume 345121-126 (1999/5-1)

Bayesian flare event detection. ROSAT X-ray observations of the UV Cetus type star G 131-026.

HAMBARYAN V., NEUHAEUSER R. and STELZER B.

Abstract (from CDS):

We have analyzed ROSAT PSPC observations for flare detection using a formalism of Bayesian model comparison. The method is applicable to the direct unbinned data and divides the whole observation into the most probable partitioning of non-uniform segments during which the photon arrival rate had no statistically significant variation. If more than one such segment is found with significantly different count rates, then variability is detected. As an example for this method, we show how a flare on the X-ray source RX J0008.8+2050, the counterpart of the UV Cet type star G 131-026, located in the solar vicinity, is detected and various items relevant to flare parameter estimation are discussed.

Abstract Copyright: ∼

Journal keyword(s): methods: statistical - stars: flare - stars: individual: G 131-026 - stars: variables: general - X-rays: stars

CDS comments: p. 121 Flare star No. 3 = [GKL99] 3 = G 131-26.

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 G 131-26 ** 00 08 53.9201067097 +20 50 25.593272581   15.17 13.52 12.19 10.50 M5V 56 0

Query : 1999A&A...345..121H

Basic data :
G 131-26 -- Double or Multiple Star
Other object types: otypes_help 		* (UCAC3,CNS5,...), PM* (2013MNRAS,G,...), X (CRSS,RX,...), ** (2014AJ,**,...), UV (2016ApJ,EUVE,...), Er* (1999A&AS,[GKL99]), NIR (2MASS)
ICRS coord. (ep=J2000) : 		00 08 53.9201067097 +20 50 25.593272581 (Optical) [ 0.7565 0.6649 90 ] A 2018yCat.1345....0G
FK4 coord. (ep=B1950 eq=1950) : 		00 06 19.4922456286 +20 33 56.995398446 [ 0.7565 0.6649 90 ]
Gal coord. (ep=J2000) : 		109.7338476978989 -40.9385886299271 [ 0.7565 0.6649 90 ]
Proper motions mas/yr : 		-48.635 -260.193 [1.629 1.537 90] A 2018yCat.1345....0G
Radial velocity / Redshift / cz : 		V(km/s) 15.449 [3.516] / z(spectroscopic) 0.000052 [0.000012] / cz 15.45 [3.52]
   (NIR) C 2015ApJS..220...16T
Parallaxes (mas): 		55.2555 [0.7612] A 2018yCat.1345....0G
Spectral type: 		M5V C 2014AJ....147...20N
Fluxes (10) :
B 15.17 [0.09] D 2012yCat.1322....0Z
V 13.52 [0.06] C 2014AJ....147...85R
R 12.19 [0.04] C 2014AJ....147...85R
G 12.004319 [0.003166] C 2022yCat.1355....0G
I 10.50 [0.04] C 2014AJ....147...85R
J 8.870 [0.027] C 2003yCat.2246....0C
H 8.26 [0.03] C 2003yCat.2246....0C
K 8.010 [0.024] C 2003yCat.2246....0C
g 14.276 [0.04] D 2012yCat.1322....0Z
r 12.883 [0.04] D 2012yCat.1322....0Z
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Identifiers (28) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

UCAC3 222-697 GJ 3010 PM J00088+2050 WARPS J0008.8+2050
** BEU 1 Karmn J00088+208 RX J0008.9+2050 WDS J00089+2050AB
CNS5 40 LP 404-33 RX J0008.8+2050 [GKL99] 3
CRSS J0008.9+2050 LSPM J0008+2050 1RXS J000854.3+205031 [RHG95] 26
EUVE J0008+20.8 LTT 10045 TIC 258878447 [ZEH2003] RX J0008.9+2050 2
GALEX J000853.8+205022 2MASS J00085391+2050252 UCAC4 555-000314 Gaia DR3 2798766647610195456
G 131-26 NLTT 375 USNO-B1.0 1108-00001688 Gaia DR2 2798766647610195456

References (56 between 1850 and 2026) (Total 56)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 3    Distance : 3    Var : 1    Rot : 1    Fe/H : 8    Plx : 3    PM : 4    SpT : 7   

   

Observing logs
ISO : 1   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : G 131-26

Link by name to the catalogue in VizieR :

UCAC3 222-697 EUVE J0008+20.8 GALEX J000853.8+205022 G 131-26 GJ 3010
LSPM J0008+2050 2MASS J00085391+2050252 NLTT 375 1RXS J000854.3+205031 UCAC4 555-000314
USNO-B1.0 1108-00001688 WDS J00089+2050AB [GKL99] 3 Gaia DR3 2798766647610195456 Gaia DR2 2798766647610195456

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