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Brown Dwarfs in the Alpha Persei Cluster

Published online by Cambridge University Press:  26 May 2016

John R. Stauffer ,
David Barrado y Navascués ,
Jerome Bouvier ,
Nicholas Lodieu  and
Mark McCaughrean
John R. Stauffer
Affiliation:
SIRTF Science Center, California Institute of Technology, Pasadena, CA 91125
David Barrado y Navascués
Affiliation:
LAEFF-INTA, Apdo. 50727, Madrid 28080 SPAIN
Jerome Bouvier
Affiliation:
Observatoire de Grenoble, Université J. Fourier, Grenoble Cedex 9, 38041 France
Nicholas Lodieu
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, 14482 Germany
Mark McCaughrean
Affiliation:
Astrophysikalisches Institut Potsdam, Potsdam, 14482 Germany

Abstract

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We have obtained a new, deep, wide-field optical imaging survey of the young Alpha Persei cluster which reveals a well-populated lower main sequence extending into the substellar mass regime. Subsequent infrared photometry confirms that most of the candidate brown dwarfs are indeed likely to be cluster members, with a predicted minimum mass of order 0.035 solar masses. We have combined the new candidate list with previous member catalogs to derive an IMF for Alpha Per; the slope of the IMF at the low mass end is α ~ 0.66. The Alpha Per IMF slope is thus very similar to that found in the Pleiades.

Information

Type
Part 4. Observations of Young Brown Dwarfs (age ≃ 50–200 Myr)
Information
Symposium - International Astronomical Union , Volume 211: Brown Dwarfs , 2003 , pp. 163 - 170
Copyright
Copyright © Astronomical Society of the Pacific 2001 

References

Andersen, J. 1995, in IAU Symposium 166, 187.Google Scholar
Baraffe, I., Chabrier, G., Allard, F., & Hauschildt, P. 1998, A&A, 337, 403.Google Scholar
Barrado y Navascués, D., Bouvier, J., Stauffer, J., Lodieu, N., & McCaughrean, M. 2002, A&A, accepted.Google Scholar
Bertelli, G. 2000, in “Stellar Clusters and Associations: Convection, Rotation, and Dynamos”. Pallavicini, R., Micela, G. and Sciortino, S. (eds.) ASP Conf. Series 198, 115.Google Scholar
Chabrier, G., Baraffe, I., Allard, F., & Hauschildt, P. 2000, ApJ, 542, L119.CrossRefGoogle Scholar
Girardi, L., Bertelli, G., Bressan, A., Chiosi, C., Groenewegen, M.A., Marigo, P., Salasnich, B., & Weiss, A. 2002, astroph 0205080.Google Scholar
Martín, E.L., Brandner, W., Bouvier, J., Luhman, K., Stauffer, J., Basri, G., Zapatero Osorio, M.R., Barrado y Navascués, D. 2000, ApJ, 543, 299.CrossRefGoogle Scholar
Meynet, G., Mermilliod, J., & Maeder, A. 1993, Navascués, D. 2000, ApJ, 543, 299. A&AS98, 477.Google Scholar
Oke, J.B. et al. 1995, PASP, 107, 375.CrossRefGoogle Scholar
de Zeeuw, T., Hoogerwerf, R., de Bruijne, J., Brown, A, and Blaauw, A. 1999, AJ, 117, 354.CrossRefGoogle Scholar