Skip to main content Accessibility help
×
Home
Hostname: page-component-564cf476b6-qq8pn Total loading time: 0.189 Render date: 2021-06-18T19:15:00.880Z Has data issue: true Feature Flags: { "shouldUseShareProductTool": true, "shouldUseHypothesis": true, "isUnsiloEnabled": true, "metricsAbstractViews": false, "figures": true, "newCiteModal": false, "newCitedByModal": true, "newEcommerce": true }

Characterization of the Twa22 AB system. A new calibrator for evolutionary tracks?

Published online by Cambridge University Press:  06 January 2010

M. Bonnefoy
Affiliation:
Laboratoire d'Astrophysique de Grenoble, BP. 53, 38041 Grenoble Cedex 9, France
G. Chauvin
Affiliation:
Laboratoire d'Astrophysique de Grenoble, BP. 53, 38041 Grenoble Cedex 9, France
C. Dumas
Affiliation:
ESO, Alonso de Cordova 3107, Vitacura, Casilla 19001, Santiago 19, Chile
A-M. Lagrange
Affiliation:
Laboratoire d'Astrophysique de Grenoble, BP. 53, 38041 Grenoble Cedex 9, France
H. Beust
Affiliation:
Laboratoire d'Astrophysique de Grenoble, BP. 53, 38041 Grenoble Cedex 9, France
B. Zuckerman
Affiliation:
Department of Physics and Astronomy, Center for Astrobiology, University of California, Los Angeles, California 90095, USA
J-L. Beuzit
Affiliation:
Laboratoire d'Astrophysique de Grenoble, BP. 53, 38041 Grenoble Cedex 9, France
F. Allard
Affiliation:
CRAL-ENS, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
I. Song
Affiliation:
Science Center/Caltech, M/S 220-6, 1200 E. California Blvd., Pasadena, CA 91125, USA
Get access

Abstract

Tight binaries discovered in young nearby associations are ideal targets to provide dynamical mass measurments through orbital monitoring. Coupled with estimated temperatures, surface gravities and luminosities, direct mass measurments provide benchmarks for evolutionary models of low-mass stars (M ≤ 0.5 M) and brown dwarfs (M ≤ 0.078 M) at young ages (Age ≤ 100 Myrs). TWA22 AB is likely to be a member of the nearby TW Hydrae association (Age ~ 8 Myr). It was resolved in a tigh binary with a projected separation of a few AU. In this paper we present preliminary results on the companion orbital monitoring and on the spectral characterisation of the system.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2010

Access options

Get access to the full version of this content by using one of the access options below.

References

Baraffe, I., Chabrier, G., Allard, F., & Hauschildt, P.H., 1998, A&A, 337, 403
Bonnet, H., Ströbele, et al., 2003, ed. P.L. Wizinowich & D. Bonaccini, Proc. SPIE, 4839, 329 CrossRef
Cushing, M.C., Rayner, J.T., Davis, S.P., & Vacca, W.D., 2003, ApJ, 582, 1066 CrossRef
Cushing, M.C., Rayner, J.T., & Vacca, W.D., 2005, ApJ, 623, 1115 CrossRef
Dumas, C., Terrile, R.J., Brown, R.H., et al., 2001, AJ, 121, 1163 CrossRef
Eisenhauer, F., Abuter, R., Bickert, et al., 2003, ed. M. Iye & A.F.M. Moorwood, Proc. SPIE, 4841, 1548 CrossRef
Kastner, J.H., Zuckerman, B., Weintraub, D.A., & Forveille, T., 1997, Science, 277, 67 CrossRef
Lenzen, R., Hofmann, R., Bizenberger, et al., 1998, ed. A.M. Fowler, Proc. SPIE, 3354, 606 CrossRef
McLean, I.S., McGovern, M.R., Burgasser, A.J., et al., 2003, ApJ, 596, 561 CrossRef
Rousset, G., Lacombe, F., Puget, et al., 2000, ed. P.L. Wizinowich, Proc. SPIE, 4007, 72 CrossRef
Veran, J.-P., & Rigaut, F.J., 1998, ed. D. Bonaccini & R.K. Tyson, Proc. SPIE, 3353, 426 CrossRef

Send article to Kindle

To send this article to your Kindle, first ensure no-reply@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about sending to your Kindle. Find out more about sending to your Kindle.

Note you can select to send to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be sent to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Characterization of the Twa22 AB system. A new calibrator for evolutionary tracks?
Available formats
×

Send article to Dropbox

To send this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Dropbox.

Characterization of the Twa22 AB system. A new calibrator for evolutionary tracks?
Available formats
×

Send article to Google Drive

To send this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your <service> account. Find out more about sending content to Google Drive.

Characterization of the Twa22 AB system. A new calibrator for evolutionary tracks?
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *