ngoc

Phan Bao Ngoc

Visiting Scholar

                                                   Academia Sinica Institute of Astronomy and Astrophysics
                                                                 P.O. Box 23-141, Taipei 10617, Taiwan
                                                                                       Office: 824
                                                                     Phone: 886-2-3365-2200, ext: 824
                                                                        Fax: 886-2-2367-7849
                                                                   email: pbngoc@asiaa.sinica.edu.tw

Education

B.S. Hue University, Vietnam, 1997

M.S. Pierre and Marie Curie University (Paris VI), France, 2000

Ph.D. Pierre and Marie Curie University (Paris VI), France, 2002

Positions

2007-present: Visiting scholar, Academia Sinica Institute of Astronomy and Astrophysics

2006-2007: Postdoctoral Fellow, Physics Department, University of Central Florida

2004-2005: Postdoctoral Fellow, Academia Sinica Institute of Astronomy and Astrophysics

2003-2004: Lecturer, Physics Department, Hue University

Awards

Henri Chretien 2007

Professional Activities

Referee for The Astrophysical Journal, The Astronomical Journal

Research Interests

Low-mass star, brown dwarf formation

        FOR KIDS: The most popular stars

        Discovery of a Bipolar CO Outflow from a Young Brown Dwarf using SMA (follow-up with SMA and CARMA)
        HarvardScience; ScienceShots in Science (pdf); Space Photos This Week in National Geographic (pdf)

Photometry, astrometry and spectroscopy of low-mass stars and brown dwarfs

        Discovery of an M9 Dwarf at only 8 parsecs (MNRAS Letters)

        Discovery of Twenty Ultracool and Brown Dwarfs at Low-Galactic Latitude using DENIS, 2MASS and MSSSO (MNRAS)
        and the Maximum Reduced Proper Motion method (A&A)

Low-mass, brown dwarf binaries

First Detection of a Widely Separated, Very-Low Mass Binary in the Field (A&A Letters, ApJ Letters) using the NTT and CHFT/AO telescopes

Magnetic activity in ultracool dwarfs

Discovery of Radio Emission from a Tight M8 Binary using VLA (ApJ), offering the first opportunity to measure dynamical masses of very low mass
stars using radio telescopes (follow-up studies with Chandra and VLBA)

Magnetic field measurement in low-mass stars

First Detections of the Zeeman Signatures in Fully-Convective Stars (ApJ Letters) using CFHT/Espadons

Protoplanetary disks around ultracool dwarfs

Refereed Publications

Phan-Bao, N., Lim, J., Donati, J.-F., Johns-Krull, C., Martin, E. L. 2009, ApJ, submitted
Magnetic Field Topology in Low-Mass Stars: Spectropolarimetric Observations of M Dwarfs

Martin, E. L., Phan-Bao, N., Bessell, M., Delfosse, X., Forveille, T., Magazzu, A., Reyle, C., Tata, R. 2009, AJ, submitted
Spectroscopic Characterization of 78 DENIS Ultracool Dwarf Candidates in the Solar Neighborhood and the Upper Sco OB Association

Osten, R. A., Phan-Bao, N., Hawley, S. L., Reid, I. N., Ojha, R. 2009, ApJ, in press
Steady and Transient Radio Emission from Ultracool Dwarfs

Berger, E., Rutledge, R. E., Phan-Bao, N., Basri, G., Giampapa, M. S., Gizis, J. E., Liebert, J., Martin, E., Fleming, T. A. 2009, ApJ, 695, 310
Periodic Radio and H-alpha Emission from the L Dwarf Binary 2MASSW J0746425+200032: Exploring the Magnetic Field Topology and Radius of an L Dwarf

Phan-Bao, N., Riaz, B., Lee, C.-F., Tang, Y.-W., Ho, P.T. P., Martin, E.L., Lim, J., Ohashi, N., Shang, H. 2008, ApJ, 689, L141
First Confirmed Detection of a Bipolar Molecular Outflow from a Young Brown Dwarf

Phan-Bao, N., Bessell, M. S., Martin, E. L., Simon, G., Borsenberger, J., Tata, R.,
Guibert, J., Crifo, F., Forveille, T., Delfosse, X., Lim, J., de Batz, B. 2008, MNRAS, 383, 831
Discovery of new nearby L and late-M dwarfs at low Galactic latitude from the DENIS database

Berger, E., Basri, G., Gizis, J. E., Giampapa, M. S., Rutledge, R. E., Liebert, J.,
Martin, E., Fleming, T. A., Johns-Krull, C. M., Phan-Bao, N., Sherry, W. H. 2008, ApJ, 676, 1307
Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs.
II. Mixed Trends in VB10 and LSR1835+32 and the Possible Role of Rotation

Berger, E., Gizis, J. E., Giampapa, M. S., Rutledge, R. E., Liebert, J., Martin, E.,
Basri, G., Fleming, T. A., Johns-Krull, C. M., Phan-Bao, N., Sherry, W. H. 2008, ApJ, 673, 1080
Simultaneous Multi-Wavelength Observations of Magnetic Activity in Ultracool Dwarfs.
I. The Complex Behavior of the M8.5 Dwarf TVLM513-46546

Phan-Bao, N., Osten, R. A., Lim, J., Martin, E. L., Ho, P. T. P. 2007, ApJ, 658, 553
Discovery of radio emission from the tight M8 binary

Phan-Bao, N., Martin, E. L., Donati, J.-F, Lim, J. 2006, ApJ Letters, 646, L73
Magnetic Fields in M Dwarfs: Rapid Magnetic Field Variability in EV Lacertae

Phan-Bao, N., Forveille, T., Martin, E. L., Delfosse, X. 2006, ApJ Letters, 645, L153
LP 714-37: A Wide Pair of Ultracool Dwarfs Actually Is a Triple

Phan-Bao, N., Bessell, M. S., Martin, E. L., Simon, G., Guibert, J., Forveille, T.,
Delfosse, X., Crifo, F., Epchtein, N., Wood, P., Tajahmady, F. 2006, MNRAS Letters, 366, L40
Discovery of a nearby M9 dwarf

Phan-Bao, N., Bessell, M. S. 2006, A&A, 446, 515
Spectroscopic distances of nearby ultracool dwarfs

Phan-Bao, N., Martin, E. L., Reyle, C., Forveille, T., Lim, J. 2005, AN, 326, 1031
Widely separated binary systems of very low-mass stars

Crifo, F., Phan-Bao, N., Delfosse, X., Forveille, T., Guibert, J., Martin, E. L., Reyle, C. 2005, A&A, 441, 653
New neighbours. VI. Spectroscopy of DENIS nearby stars candidates

Phan-Bao, N., Martin, E. L., Reyle, C., Forveille, T., Lim, J. 2005, A&A Letters, 439, L19
Discovery of a widely separated binary system of very low mass stars

Phan-Bao, N., Crifo, F., Delfosse, X., Forveille, T., Guibert, J., Borsenberger, J., Epchtein, N.,
Fouque, P., Simon, G., Vetois, J. 2003, A&A, 401, 959
New neighbours. V. 35 DENIS late-M dwarfs between 10 and 30 parsecs

Phan-Bao, N., Guibert, J., Crifo, F., Delfosse, X., Forveille, T., Borsenberger, J., Epchtein, N.,
Fouque, P., Simon, G. 2001, A&A, 380, 590
New neighbours: IV. 30 DENIS late-M dwarfs between 15 and 30 parsecs

Phan-Bao, N., Vo, T., Nguyen, B.A. 1999, Proc. NCST of Vietnam, 11, 41
Exact solutions and quantum noises of an interacting x-m-gamma system

Non-Refereed Publications

Deshpande, Rohit, Martin, E. L., Montgomery, M. M., Phan-Bao, N., Zapatero-Osorio, M.,
Bouy, H., Tata, R. 2008, American Astronomical Society, AAS Meeting #211, #159.03
The NASA Keck/NIRSPEC Radial Velocity Search for Giant Exoplanets around M Dwarfs

Osten, Rachel A., Phan-Bao, N., Ojha, R. 2007, American Astronomical Society, AAS Meeting #211, #103.02
The Characteristics of Radio Emission from the Ultracool Dwarf Binary LP 349-25

Deshpande, Rohit, Martin, E. L., Montgomery, M. M., Zapatero-Osorio, M. R., Tata, R.,
Phan-Bao, N., Bouy, H. 2007, American Astronomical Society, DPS meeting #39, #22.09
The Keck/NIRSPEC Search for Giant Exoplanets around Late M-dwarfs

Martin, Eduardo, Tata, Ramarao, Deshpande, Rohit, Ngoc, Phan Bao, Las Cswg, Ukidss,
Forveille, Thierry 2007, NOAO Proposal ID #2007A-0180
Infrared parallaxes for T/Y dwarfs from CFHTLS and UKIDSS

Tata, R., Martin, E. L., Kendall, T., Jameson, R., Magazzu, A., Barrado Y Navascues, D.,
Phan-Bao, N. 2006, Exploiting Large Surveys for Galactic Astronomy, 26th meeting of the IAU, Joint Discussion 13,
22-23 August 2006, Prague, Czech Republic, JD13, #27
First Brown Dwarfs from the UKIRT Infrared Deep Sky Survey (UKIDSS)

Phan-Bao, N., Bessell, M. S. 2006, VizieR On-line Data Catalog: J/A+A/446/515
Distances of nearby ultracool dwarfs (Phan-Bao+, 2006)

Crifo, F., Phan-Bao, N., Delfosse, X., Forveille, T., Guibert, J., Martin, E. L.,
Reyle, C. 2005, VizieR On-line Data Catalog: J/A+A/441/653
32 DENIS nearby red dwarfs (Crifo+, 2005)

Phan-Bao, N., Crifo, F., Delfosse, X., Forveille, T., Guibert, J., Borsenberger, J., Epchtein, N.,
Fouque, P., Simon, G., Vetois, J. 2005, VizieR On-line Data Catalog: J/A+A/401/959
35 DENIS late-M dwarfs between 10 and 30pc (Phan-Bao+, 2003)

Phan-Bao, N., Guibert, J., Crifo, F., Delfosse, X., Forveille, T., Borsenberger, J., Epchtein, N.,
Fouque, P., Simon, G. 2005, VizieR On-line Data Catalog: J/A+A/380/590
30 DENIS late-M dwarfs between 15 and 30pc (Phan-Bao+, 2001)

Delfosse, X., Forveille, T., Martín, E. L., Phan-Bao, N., Crifo, F., Guibert, J., Marchal, L., Beuzit, J. L.,
Borsenberger, J., Epchtein, N., Fouque, P., Simon, G. 2003, SF2A-2003: Semaine de l'Astrophysique Française,
Eds.: F. Combes, D. Barret, T. Contini, and L. Pagani. EdP-Sciences, Conference Series, p. 585.
A large sample of ultracool dwarfs with DENIS

Links
ADS Astro-ph CARMA CDS CFHT Chandra ESO HST MSSSO NOAO SMA Spitzer VLA