2003A&A...402..745D

Query : 2003A&A...402..745D

2003A&A...402..745D - Astronomy and Astrophysics, volume 402745-754 (2003/5-1)

The radial velocities and physical parameters of ER Vul.

DUEMMLER R., DOUCET C., FORMANEK F., ILYIN I. and TUOMINEN I.

Abstract (from CDS):

object{ER Vul} is an eclipsing binary consisting of two solar type stars in a very close orbit with a period of 0.7d. Accordingly, the two stars rotate very fast, leading to a blending of many spectral features at all phases. Therefore, measuring the radial velocity curve without systematic errors is not trivial. Here, we use a two-dimensional cross-correlation method applied to 137 high quality spectra, collected over 3 years, in order to obtain the radial velocity curve and determine the orbital and some physical parameters of the system from it. Primarily, we improve the binary period to 0.69809458d±0.00000014d, and find that the two amplitudes are slightly smaller than those measured by others, while the mass ratio is still similar. While at least the primary almost fills its Roche lobe, the system is still detached, i.e. not yet a fully fledged W UMa-system. The behaviour of the CaII IRT line at 8662Å confirms that the secondary is the more active component, and that the chromospheric emission is not symmetrically distributed over the surfaces of either star.

Abstract Copyright: ∼

Journal keyword(s): stars: individual: ER Vul - binaries: spectroscopic - binaries: eclipsing - stars: late-type - techniques: radial velocities

VizieR on-line data: <Available at CDS (J/A+A/402/745): table1.dat>

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 HD 200391 Ae* 21 02 25.9070119848 +27 48 26.444060604   7.93 7.374   6.624 G0V+G5V 366 0

Query : 2003A&A...402..745D

Basic data :
HD 200391 -- Herbig Ae/Be Star
Other object types: otypes_help 		* (HD,AG,...), SB* (2018A&A,CABS,...), X (2E,1ES,...), UV (2EUVE,EUVE,...), V* (ASAS,V*), Ae* (1999AJ), RS* (2013AJ), EB* (2022yCat), PM* (2018yCat), NIR (2MASS)
ICRS coord. (ep=J2000) : 		21 02 25.9070119848 +27 48 26.444060604 (Optical) [ 0.0104 0.0125 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		21 00 16.4660179185 +27 36 33.338238635 [ 0.0104 0.0125 90 ]
Gal coord. (ep=J2000) : 		073.3420392384525 -12.3057314840256 [ 0.0104 0.0125 90 ]
Proper motions mas/yr : 		87.102 6.364 [0.017 0.018 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -24.60 [0.5] / z(~) -0.000082 [0.000002] / cz -24.60 [0.50]
   A 2004MNRAS.349.1069K
Parallaxes (mas): 		19.8012 [0.0187] A 2020yCat.1350....0G
Spectral type: 		G0V+G5V C 2009A&ARv..17..251S
Fluxes (7) :
B 7.93 [~] E ~
V 7.374 [0.044] C 2012AcA....62...67K
G 7.191916 [0.003210] C 2020yCat.1350....0G
I 6.624 [0.045] C 2012AcA....62...67K
J 6.082 [0.019] C 2003yCat.2246....0C
H 5.788 [0.020] C 2003yCat.2246....0C
K 5.718 [0.021] C 2003yCat.2246....0C
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Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 200391 2EUVE J2102+27.7 2RE J210224+274908 TYC 2180-611-1
AG+27 2353 EUVE J2102+27.7 RE J210224+274848 uvby98 100200391
ASAS J210225+2748.4 GCRV 13216 RE J2102+274 V* ER Vul
BD+27 3952 GEN# +1.00200391 RX J2102.4+2748 WEB 18903
CABS 179 GSC 02180-00611 1RXS J210225.7+274829 YZ 27 12031
CCABS 144 HIC 103833 SAO 89396 Gaia DR2 1845206534070618624
CMC 208831 HIP 103833 SBC7 842 Gaia DR3 1845206534070618624
2E 4438 2MASS J21022589+2748264 SBC9 1282 Gaia DR1 1845206529773807616
2E 2100.2+2736 PPM 112323 SKY# 39984
1ES 2100+27.6 2RE J2102+274 TIC 126336928

References (366 between 1850 and 2026) (Total 366)
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 : 7    Diameter : 2    Distance : 2    Var : 5    Rot : 10    Fe/H : 3    Plx : 5    PM : 4    SpT : 3   

   

Observing logs
Herschel : 3    IUE : 58   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : HD 200391

Link by name to the catalogue in VizieR :

HD 200391 AG+27 2353 BD+27 3952 CABS 179 2E 4438
EUVE J2102+27.7 GSC 02180-00611 HIC 103833 HIP 103833 2MASS J21022589+2748264
PPM 112323 2RE J2102+274 2RE J210224+274908 1RXS J210225.7+274829 SAO 89396
TYC 2180-611-1 uvby98 100200391 V* ER Vul Gaia DR2 1845206534070618624 Gaia DR3 1845206534070618624
Gaia DR1 1845206529773807616

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