2005A&A...440.1127A


Query : 2005A&A...440.1127A

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 - 2022
#notes
1 IC 348 OpC 03 44 32 +32 09.5           ~ 1300 1
2 [RRN96] GG Tau B Y*? 04 32 30.2766917736 +17 31 30.449809020           M6 48 1
3 [RRN96] GG Tau Bb TT* 04 32 30.28224 +17 31 30.3024           M6+M7.5 78 1
4 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 691 1
5 V* V397 Aur Or* 04 56 02.0265224208 +30 21 03.670989228   13.07 11.72 11.25   K7e 159 0
6 V* V1642 Ori A Y*? 05 29 20.6215098192 +00 41 27.948799752           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 20.7018230760 +00 41 28.552644384           K7-M0 2 0
9 V* V1174 Ori Or* 05 34 27.8529220296 -05 41 37.875014808 16.506 15.070 14.305   12.367 M0 51 0
10 V* YY Gem BY* 07 34 37.4474327544 +31 52 10.179641496 11.60 10.56 9.27 7.69 6.67 M0.5VeFe-2 840 0
11 V* SW Vir AB* 13 14 04.3830437280 -02 48 25.130666916 9.24 8.52 6.85     M7III: 254 0
12 V* RX Boo AB* 14 24 11.6253191184 +25 42 13.394221596   9.23 8.60     M7.5-M8 431 0
13 V* CM Dra BY* 16 34 20.3302660573 +57 09 44.368918696   14.50 12.87 10.85 9.26 M4.5V 425 0
14 V* TY CrA Ae* 19 01 40.8284458320 -36 52 33.816176040 10.03 9.92 9.39     B9e 277 0
15 V* EK Cep EB* 21 41 21.5042268336 +69 41 34.112933916   7.95 7.89     A0V 206 0

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2022.05.22-00:05:48

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