2019A&A...628A.107M

Query : 2019A&A...628A.107M

2019A&A...628A.107M - Astronomy and Astrophysics, volume 628A107-107 (2019/8-1)

Magnetic activity of the solar-like star HD 140538.

MITTAG M., SCHMITT J.H.M.M., METCALFE T.S., HEMPELMANN A. and SCHRODER K.-P.

Abstract (from CDS):

The periods of rotation and activity cycles are among the most important properties of the magnetic dynamo thought to be operating in late-type, main-sequence stars. In this paper, we present a SMWO-index time series composed from different data sources for the solar-like star HD 140538 and derive a period of 3.88±0.02yr for its activity cycle. Furthermore, we analyse the high-cadence, seasonal SMWO data taken with the TIGRE telescope and find a rotational period of 20.71±0.32 days. In addition, we estimate the stellar age of HD 140538 as 3.7Gyrs via a matching evolutionary track. This is slightly older than the ages obtained from gyrochronology based on the above rotation period, as well as the activity-age relation. These results, together with its stellar parameters that are very similar to a younger Sun, make HD 140538 a relevant case study for our understanding of solar activity and its evolution with time.

Abstract Copyright: © ESO 2019

Journal keyword(s): stars: atmospheres - stars: activity - stars: chromospheres - stars: late-type - stars: individual: HD 140538 - stars: rotation

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 * psi Ser PM* 15 44 01.8185683752 +02 30 54.600593940       5.4   G2.5V 270 0

Query : 2019A&A...628A.107M

Basic data :
* psi Ser -- High Proper Motion Star
Other object types: otypes_help 		* (*,AG,...), ** (**,ADS,...), X (RX,1RXS,...), PM* (2007A&A,LSPM), UV (TD1), NIR (2MASS), IR (IRAS)
ICRS coord. (ep=J2000) : 		15 44 01.8185683752 +02 30 54.600593940 (Optical) [ 0.0334 0.0397 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		15 41 30.6871598313 +02 40 26.315538852 [ 0.0334 0.0397 90 ]
Gal coord. (ep=J2000) : 		009.6984825974129 +41.9675624382220 [ 0.0334 0.0397 90 ]
Proper motions mas/yr : 		-42.431 -136.845 [0.045 0.054 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) 19.072 [0.0003] / z(spectroscopic) 0.000064 [0.000000] / cz 19.07 [0.00]
   (Opt) A 2018A&A...616A...7S
Parallaxes (mas): 		67.6007 [0.036] A 2020yCat.1350....0G
Spectral type: 		G2.5V B 1989ApJS...71..245K
Fluxes (5) :
R 5.4 [~] E 2003AJ....125..984M
G 5.700448 [0.002807] C 2020yCat.1350....0G
J 4.59 [0.35] E 2003yCat.2246....0C
H 4.04 [0.35] E 2003yCat.2246....0C
K 4.30 [0.04] E 2003yCat.2246....0C
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Identifiers (54) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* psi Ser GC 21155 LSPM J1544+0230 TYC 355-1288-1
* psi Ser A GCRV 9078 2MASS J15440182+0230548 UBV 13401
* 23 Ser GEN# +1.00140538 N30 3535 UBV M 20937
** A 2230A GJ 596.1 PLX 3556 USNO-B1.0 0925-00344317
ADS 9763 A GJ 9527 PMC 90-93 1371 uvby98 100140538
AG+02 1864 GJ 9527 A PPM 161850 WDS J15440+0231A
AKARI-IRC-V1 J1544018+023053 GSC 00355-01288 RX J1544.0+0230 WEB 13065
ASCC 1144065 HD 140538A 1RXS J154402.1+023055 Wolf 573
BD+02 2989 HD 140538 2RXS J154402.0+023054 YZ 2 5269
CCDM J15439+0230A HIC 77052 SAO 121152 [ZEH2003] RX J1544.0+0230 1
CNS5 3873 HIP 77052 SKY# 28442 Gaia DR2 4423865487962417024
CSI+02 2989 1 HR 5853 SPOCS 667 Gaia DR3 4423865487962417024
CSI+02 2989 4 IDS 15390+0250 A TD1 18510
FK5 3248 IRAS 15415+0240 TIC 459427073

References (270 between 1850 and 2026) (Total 270)
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 : 10    Distance : 2    Rot : 8    Fe/H : 37    Plx : 4    PM : 8    SpT : 4   

   

Observing logs
Herschel : 2   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * psi Ser

Link by name to the catalogue in VizieR :

AG+02 1864 AKARI-IRC-V1 J1544018+023053 BD+02 2989 CCDM J15439+0230A FK5 3248
GJ 596.1 GJ 9527 GJ 9527 A GSC 00355-01288 HD 140538A
HD 140538 HIC 77052 HIP 77052 HR 5853 IRAS 15415+0240
LSPM J1544+0230 2MASS J15440182+0230548 PLX 3556 PPM 161850 1RXS J154402.1+023055
SAO 121152 TD1 18510 TYC 355-1288-1 USNO-B1.0 0925-00344317 uvby98 100140538
WDS J15440+0231A Gaia DR2 4423865487962417024 Gaia DR3 4423865487962417024

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