2000ApJ...532L.129B

Query : 2000ApJ...532L.129B

2000ApJ...532L.129B - Astrophys. J., 532, L129-L132 (2000/April-1)

The RR Lyrae star U Comae as a test for nonlinear pulsation models.

BONO G., CASTELLANI V. and MARCONI M.

Abstract (from CDS):

We use high-precision multiband photometric data of the first-overtone RR Lyrae star U Comae to investigate the predictive capability of full-amplitude, nonlinear, convective hydrodynamical models. The main outcome of this investigation is that theoretical predictions properly account for the luminosity variations along a full pulsation cycle. Moreover, we find that this approach, because of the strong dependence of this observable and of the pulsation period on stellar parameters, supplies tight constraints on stellar mass, effective temperature, and distance modulus. Pulsational estimates of these parameters appear in good agreement with empirical ones. Finally, a well-defined bump just before the luminosity maximum gave the unique opportunity to calibrate the turbulent convection model adopted for handling the coupling between pulsation and convection.

Abstract Copyright: ∼

Journal keyword(s): Stars: Distances - Stars: Evolution - Stars: Horizontal-Branch - Stars: Individual: Constellation Name: U Comae - Stars: Oscillations - Stars: Variables: Other

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* U Com RR* 12 40 03.1943214144 +27 29 56.132925648   11.92 11.76     kA5hF0 104 1

Query : 2000ApJ...532L.129B

Basic data :
V* U Com -- RR Lyrae Variable
Other object types: otypes_help 		* (HIP,CSI,...), RR* (2012A&A), V* (AN,ASAS,...), RR? (2018yCat), PM* (2018yCat), Pu* (2018AJ), blu (2021A&A), NIR (2MASS), Opt (ATO)
ICRS coord. (ep=J2000) : 		12 40 03.1943214144 +27 29 56.132925648 (Optical) [ 0.0172 0.0142 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		12 37 35.5152998418 +27 46 24.528162565 [ 0.0172 0.0142 90 ]
Gal coord. (ep=J2000) : 		203.9415961469463 +87.4441956371682 [ 0.0172 0.0142 90 ]
Proper motions mas/yr : 		-48.339 -13.415 [0.023 0.025 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -7.71 [2.90] / z(spectroscopic) -0.000026 [0.000010] / cz -7.71 [2.90]
   (Opt) C 2022yCat.1355....0G
Parallaxes (mas): 		0.5853 [0.023] A 2020yCat.1350....0G
Spectral type: 		kA5hF0 D 1959ApJ...130..507P
Fluxes (6) :
B 11.92 [0.11] D 2000A&A...355L..27H
V 11.76 [0.15] D 2000A&A...355L..27H
G 11.791750 [0.007188] C 2020yCat.1350....0G
J 11.218 [0.027] C 2003yCat.2246....0C
H 10.994 [0.034] C 2003yCat.2246....0C
K 10.993 [0.018] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 52 Display criteria :

Identifiers (22) :
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HIP 61809 GCRV 7610 SV* HV 3270 [SS59] II 188
AN 84.1910 GSC 01992-01477 TIC 285118453 Gaia DR2 3962473193054146944
ASAS J124003+2729.9 HIC 61809 TYC 1992-1477-1 Gaia DR3 3962473193054146944
ATO J190.0130+27.4988 2MASS J12400319+2729561 uvby98 620017188 Gaia DR1 3962473193054146944
CRTS J124003.2+272955 NSVS 7657416 V* U Com
CSI+27-12376 ROTSE1 J124004.01+273014.0 WEB 10998

References (104 between 1850 and 2026) (Total 104)
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 : 8    Distance : 3    Var : 8    Fe/H : 5    Plx : 6    PM : 5    SpT : 1   

   

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Link by name to the catalogue in VizieR :

HIP 61809 GSC 01992-01477 HIC 61809 2MASS J12400319+2729561 TYC 1992-1477-1
uvby98 620017188 V* U Com Gaia DR2 3962473193054146944 Gaia DR3 3962473193054146944 Gaia DR1 3962473193054146944

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