2004A&A...423..327K


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.18CET06:07:26

2004A&A...423..327K - Astronomy and Astrophysics, volume 423, 327-333 (2004/8-3)

Cepheid distances from infrared long-baseline interferometry. II. Calibration of the period-radius and period-luminosity relations.

KERVELLA P., BERSIER D., MOURARD D., NARDETTO N. and COUDE DU FORESTO V.

Abstract (from CDS):

Using our interferometric angular diameter measurements of seven classical Cepheids reported in Kervella et al. (2004A&A...416..941K), complemented by previously existing measurements, we derive new calibrations of the Cepheid period-radius (P-R) and period-luminosity (P-L) relations. We obtain a P-R relation of logR=[0.767±0.009]logP+[1.091±0.011], only 1σ away from the relation obtained by Gieren et al. (1998ApJ...496...17G). We therefore confirm their P-R relation at a level of Δ(logR)=±0.02. We also derive an original calibration of the P-L relation, assuming the slopes derived by Gieren et al. (1998ApJ...496...17G) from LMC Cepheids, αK=-3.267±0.042 and αV=-2.769±0.073. With a P-L relation of the form Mλλ(logP-1)+βλ, we obtain logP=1 reference points of βK=-5.904±0.063 and βV=-4.209±0.075. Our calibration in the V band is statistically identical to the geometrical result of Lanoix et al. (1999MNRAS.308..969L).

Abstract Copyright:

Journal keyword(s): stars: variables: Cepheids - cosmology: distance scale - stars: oscillations - techniques: interferometric

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9107 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14346 1
3 * bet Dor cC* 05 33 37.5125319201 -62 29 23.323100433 5.13 4.58 3.76 3.55 3.12 F8/G0Ib 341 0
4 * zet Gem cC* 07 04 06.5307903 +20 34 13.073871 5.20 4.58 3.79   3.082 G1Ib 526 0
5 * l Car cC* 09 45 14.8112246 -62 30 28.451894   4.33 3.40     G5Iab/b 280 1
6 * L Car * 10 22 58.1460612 -66 54 05.390302 4.35 4.86 4.99     B8V 99 0
7 V* X Sgr cC* 17 47 33.6241002643 -27 49 50.848981593 5.84 5.34 4.54   3.661 F7II 303 0
8 V* Y Oph cC* 17 52 38.7021149511 -06 08 36.875163136 8.62 7.61 6.21     G3Ia 336 0
9 * gam01 Sgr cC* 18 05 01.2265190155 -29 34 48.303215344 5.99 5.47 4.69   3.869 G0Ib/II 323 0
10 * eta Aql cC* 19 52 28.3677478 +01 00 20.369619 5.12 4.61 3.80   3.030 F6Iab+B9.8V 628 0
11 * del Cep cC* 22 29 10.2650184 +58 24 54.713856 4.71 4.35 3.75   3.219 F5Iab:+B7-8 670 0

    Equat.    Gal    SGal    Ecl

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2019.11.18-06:07:26

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