2005A&A...440.1127A


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.26CET20:02:29

2005A&A...440.1127A - Astronomy and Astrophysics, volume 440, 1127-1132 (2005/9-4)

What are the temperatures of T Tauri stars? Constraints from coeval formation of young eclipsing binaries.

AMMLER M., JOERGENS V. and NEUHAEUSER R.

Abstract (from CDS):

We show how the assumption of coeval formation can be used to constrain the effective temperatures of the components of young eclipsing double-lined spectroscopic binaries. Our method extends the approach of White et al. (1999ApJ...520..811W) to a two-step analysis. The first step compares evolutionary models to the observed masses and radii and selects those models that predict ages that are consistent with coeval formation. The second step then uses these models to constrain the effective temperatures. We applied the method to literature values of the stellar parameters of the eclipsing binaries RX J0529.4+0041A and V1174 Ori and confirm that V1174 Ori A has dwarf-like temperatures at an age of 9Myrs, while we cannot draw any conclusions for RX J0529.4+0041A and V1174 Ori B. Considering these binaries, we find that none of the evolutionary models gives coeval solutions simultaneously in mass, radius and effective temperature.

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: atmospheres - Hertzsprung-Russell (HR) and C-M diagrams - stars: pre-main sequence - stars: late-type

Simbad objects: 15

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Number of rows : 15

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IC 348 OpC 03 44 34 +32 09.8           ~ 1245 1
2 [RRN96] GG Tau B Y*? 04 32 30.2772495129 +17 31 30.448743263           M6 47 1
3 [RRN96] GG Tau Bb TT* 04 32 30.28224 +17 31 30.3024           M6+M7.5 76 1
4 V* GG Tau Or* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 665 1
5 V* V397 Aur Or* 04 56 02.0261376554 +30 21 03.635056925   13.07 11.72 11.25   K7e 154 0
6 V* V1642 Ori A Y*? 05 29 20.6218092175 +00 41 27.941912748           K1V 15 0
7 V* V1642 Ori TT* 05 29 20.633592 +00 41 27.99600   13.31 12.31 12.03   K2 45 0
8 V* V1642 Ori B * 05 29 20.7034682359 +00 41 28.527876492           K7-M0 2 0
9 V* V1174 Ori Or* 05 34 27.8535605060 -05 41 37.876152541 16.506 15.070 14.305   12.367 M0 51 0
10 V* YY Gem BY* 07 34 37.4475372002 +31 52 10.181030942 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 826 0
11 V* SW Vir AB* 13 14 04.3908742003 -02 48 25.155302846 9.24 8.52 6.85     M7III: 251 0
12 V* RX Boo AB* 14 24 11.6240733185 +25 42 13.381760051   9.23 8.60     M7.5-M8 424 0
13 V* CM Dra BY* 16 34 20.3299130309 +57 09 44.365524588   14.50 12.87 10.85 9.26 M4.5V 409 0
14 V* TY CrA Ae* 19 01 40.8312189956 -36 52 33.801844387 10.03 9.92 9.39     B9e 272 0
15 V* EK Cep Al* 21 41 21.5039950844 +69 41 34.108387051   7.95 7.89     A0V 204 0

    Equat.    Gal    SGal    Ecl

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2021.02.26-20:02:29

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