1998A&AS..131..115L

Query : 1998A&AS..131..115L

1998A&AS..131..115L - Astron. Astrophys., Suppl. Ser., 131, 115-118 (1998/July-0)

The variations in light and color curves and possible short period oscillations of the binary AU Serpentis.

LI Z.-Y., DING Y.-R., ZHANG Z.-S. and LI Y.-L.

Abstract (from CDS):

We have photometrically monitored AU Ser for five years. It is considered to be a binary in poor thermal contact (Kaluzny, 1986AcA....36..113K) or in detachment (Djurasevic, 1993Ap&SS.203..207D). The addition of new minimum times slightly modified the light ephemeris of Binnendijk (1972AJ.....77..603B). The value and sign of the O'Connell effect have been changing with time. A remarkable variation of the difference between minimum depths in light curves has taken place in the period from 1991 to 1995. These variations in light curves are not expected by TRO theory but reminiscent of the situation in VW Cep. Our data, along with Binnendijk's, show a variation in color curves especially for 1995 observations. The variations in light and color curves might be straightforwardly explained by the distortion of starspot(s). Possible oscillations with short periods and shortly coherent times have been detected, which is unusual for such a binary.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - stars: activity - stars: oscillations - stars: individual: AU Ser

VizieR on-line data: <Available at CDS (J/A+AS/131/115): table2a.dat table2b.dat table345.dat tables.tex>

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 V* AU Ser SB* 15 56 49.4686990368 +22 16 01.590650328   11.76 11.04 10.383 9.931 G4V 111 0

Query : 1998A&AS..131..115L

Basic data :
V* AU Ser -- Spectroscopic Binary
Other object types: otypes_help 		* (TYC,GSC,...), V* (AN,ASAS,...), EB* (2009AJ), SB* (SBC9), PM* (2018yCat), X (1RXS), NIR (2MASS), Opt (LAMOST)
ICRS coord. (ep=J2000) : 		15 56 49.4686990368 +22 16 01.590650328 (Optical) [ 0.0086 0.0100 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		15 54 39.3345456752 +22 24 41.114940770 [ 0.0086 0.0100 90 ]
Gal coord. (ep=J2000) : 		036.8576197658940 +47.8442246546655 [ 0.0086 0.0100 90 ]
Proper motions mas/yr : 		-34.294 -49.072 [0.011 0.012 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -56.88 [8.49] / z(spectroscopic) -0.000190 [0.000028] / cz -56.87 [8.49]
   (Opt) D 2020RAA....20..163Q
Parallaxes (mas): 		6.1402 [0.0142] A 2020yCat.1350....0G
Spectral type: 		G4V C 2013AJ....145...60Y
Fluxes (8) :
B 11.76 [0.08] D 2000A&A...355L..27H
V 11.04 [0.06] D 2000A&A...355L..27H
R 10.383 [~] D 2012AJ....143...99T
G 10.913328 [0.010512] C 2020yCat.1350....0G
I 9.931 [~] D 2012AJ....143...99T
J 9.311 [0.020] C 2003yCat.2246....0C
H 8.945 [0.023] C 2003yCat.2246....0C
K 8.802 [0.019] C 2003yCat.2246....0C
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Identifiers (16) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

TYC 1502-1762-1 LAMOST J155649.56+221601.6 SBC9 2991 V* AU Ser
AN 48.1935 2MASS J15564947+2216016 TIC 229555752 Gaia DR2 1218233805261820288
ASAS J155649+2216.0 NSVS 7865410 UCAC2 39680325 Gaia DR3 1218233805261820288
GSC 01502-01762 1RXS J155650.6+221602 UCAC3 225-122835 Gaia DR1 1218233800966950016

References (111 between 1850 and 2026) (Total 111)
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 : 2    Distance : 2    Var : 4    Fe/H : 2    Plx : 3    PM : 2   

   

External archives :

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

Link by name to the catalogue in VizieR :

TYC 1502-1762-1 GSC 01502-01762 2MASS J15564947+2216016 1RXS J155650.6+221602 UCAC2 39680325
UCAC3 225-122835 V* AU Ser Gaia DR2 1218233805261820288 Gaia DR3 1218233805261820288 Gaia DR1 1218233800966950016

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