2000A&A...358..587K


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.02CEST11:05:25

2000A&A...358..587K - Astronomy and Astrophysics, volume 358, 587-592 (2000/6-2)

Precise temperatures of classical Cepheids and yellow supergiants from line-depth ratios.

KOVTYUKH V.V. and GORLOVA N.I.

Abstract (from CDS):

The ratios of spectral line-depths are powerful indicators of the effective temperature. Thirty-two functional formulas to estimate the effective temperatures from line-depth ratios for Cepheids and F-G supergiants are offered. For high-quality spectra we find errors in the temperature as small as 10-15K. These calibrations are only little sensitive to other stellar parameters and allow to derive highly precise Teff for supergiants in the range 4700-6700K.

Abstract Copyright:

Journal keyword(s): line: formation - stars: fundamental parameters - stars: variables: Cepheids

Status at CDS:  

Simbad objects: 12

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Number of rows : 12

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 V* SZ Tau cC* 04 37 14.7778803229 +18 32 34.929341041 7.65 7.13 6.37     F6.7:Ib 284 0
2 V* T Mon cC* 06 25 12.9997562821 +07 05 08.561189768 8.24 7.20 5.98   4.996 G3Iabv+A0p 440 1
3 * zet Gem cC* 07 04 06.5307903 +20 34 13.073871 5.20 4.58 3.79   3.082 G1Ib 529 0
4 * ksi Boo A PM* 14 51 23.3876853015 +19 06 01.641924918   5.40 4.675     G7Ve 496 0
5 V* U Sgr cC* 18 31 53.3321808602 -19 07 30.262730218 8.50 7.81 6.68   5.413 G1Ib 427 0
6 * sig Dra PM* 19 32 21.5902990 +69 39 40.234737 5.860 5.460 4.680 4.04 3.63 K0V 581 0
7 V* SV Vul cC* 19 51 30.9059608126 +27 27 36.835645654 8.65 7.86 6.74   5.703 F8Ia 393 0
8 * eta Aql cC* 19 52 28.3677478 +01 00 20.369619 5.12 4.61 3.80   3.030 F6Iab+B9.8V 631 0
9 * 10 Sge cC* 19 56 01.2614273274 +16 38 05.236276391 6.45 6.03 5.36 6.81 4.789 F7Ib 324 0
10 V* X Cyg cC* 20 43 24.1918662954 +35 35 16.075732392 8.69 7.70 6.47   5.241 F7Ib 433 0
11 V* T Vul cC* 20 51 28.2382502598 +28 15 01.816605372 6.89 6.49 5.77   5.061 F5Ib+A0.8V 314 0
12 * del Cep cC* 22 29 10.2650184 +58 24 54.713856 4.71 4.35 3.75   3.219 F5Iab:+B7-8 675 0

    Equat.    Gal    SGal    Ecl

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2020.06.02-11:05:25

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