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Anna Katherina Vivas Maldonado

Assistant Astronomer

Cerro Tololo Interamerican Observatory

La Serena, Chile

Variable stars, structure and formation of the Milky Way and its satellites, stellar streams, large scale surveys, data mining

Astronomy, YALE UNIVERSITY. Estados Unidos, 2002

Assistant Astronomer Full Time

CERRO TOLOLO INTERAMERICAN OBSERVATORY

La Serena, Chile

2013 - A la fecha
Research Scientist Full Time

Centro de Investigaciones de Astronomía

Merida, Venezuela

2002 - 2013

Doctoral:

1. Study of the RR Lyrae Population in the Thick Disk of the Milky Way, by Cecilia Mateu. Universidad Central de Venezuela, Caracas, Venezuela, January 2011

Master:

1. The Origins of ? Centauri, by José Gregorio Fernández, Universidad de Los Andes, Mérida, Venezuela, January 31, 2014

Undergraduate Senior Thesis (Licenciatura):

1. The Stellar Population of the Canis Major Galaxy, by Cecilia Mateu. Departament of Physics, Universidad Simón Bolívar, Caracas, Venezuela, November 2004.
2. Searching RR Lyrae Stars in the Southern Tail of the Sagittarius Dwarf Spheroidal Galaxy, by Yolimar Subero. Departament of Physics, Universidad Central de Venezuela, Caracas, Venezuela, May 2006
3. Kinematic Study of RR Lyrae Stars in the Inner Halo of the Milky Way, by Yara L. Jaffé. Departament of Physics, Universidad Simón Bolívar, Caracas, Venezuela, October 2006
4. Does the Oosterhoff Dichotomy exist in the Halo of the Galaxy?, by Nataly Ospina, Universidad del Valle, Cali, Colombia. November 2009
5. Searching for a Possible Galaxy Associated with the Globular Cluster Omega Centauri, by José Gregorio Fernández, Department of Physics, Universidad Central de Venezuela, Caracas, Venezuela, December 2011

Lorenzo Mendoza Fleury Award

Fundación Empresas Polar

Venezuela, 2009

Highest scientific prize in Venezuela.
Dirk Brower Prize

YALE UNIVERSITY

Estados Unidos, 2004

For a contribution of unusual merit to any branch of astronomy


A comprehensive view of the Virgo stellar stream Duffau S.; Vivas, A. K.; Zinn, R; Mendez, R; Ruiz M.T. Article ISI SCOPUS ASTRONOMY & ASTROPHYSICS (2014)
La Silla QUEST RR Lyrae Star Survey: Region I Zinn, R; Horowitz B.; Vivas, A. K.; Baltay, C; Ellman N.; Hadjiyska, E; Rabinowitz, D; Miller, L Article WOS Core Collection The Astrophysical Journal (2014)
The low-mass star and sub-stellar populations of the 25 Orionis group Downes J.J.; Briceno, C; Mateu, C.; Hernández J.; Vivas, A. K.; Calvet, N; Hartmann, L; Petr-Gotzens, M; Allen L. Article ISI SCOPUS MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2014)
A Comprehensive, Wide-field Study of Pulsating Stars in the Carina Dwarf Spheroidal Galaxy Vivas, A. K.; Mateo, M Article WOS Core Collection The Astronomical Journal (2013)
The QUEST RR Lyrae Survey - III. The low Galactic latitude catalogue Mateu, C.; Vivas, A. K.; Downes J.J.; Briceno, C; Zinn, R; Cruz-Diaz, G. Article WOS Core Collection MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2013)
Gauging the Galactic thick disk with RR Lyrae stars Mateu, C.; Vivas K.; Downes J.J.; Briceno, C; Cruz, G. Article MESON 2016 - 14TH INTERNATIONAL WORKSHOP ON MESON PRODUCTION, PROPERTIES AND INTERACTION (2012)
Sub-structures in the inner halo of the Milky Way Vivas, A. K.; Zinn, R; Duffau S.; Jaffe, Y Article MESON 2016 - 14TH INTERNATIONAL WORKSHOP ON MESON PRODUCTION, PROPERTIES AND INTERACTION (2012)
Halo Velocity Groups in the Pisces Overdensity Sesar, B.; Vivas, A. K.; Duffau S.; Ivezic, Z Article WOS Core Collection The Astrophysical Journal (2010)
No Excess of RR Lyrae Stars in the Canis Major Overdensity Mateu, C.; Vivas, A. K.; Zinn, R; Miller, L; Abad C. Article WOS Core Collection The Astronomical Journal (2009)
Proper Motions in Kapteyn Selected Area 103: A Preliminary Orbit for the Virgo Stellar Stream Casetti-Dinescu, D; Girard, T; Majewski S.; Vivas, A. K.; Wilhelm R.; Carlin, J; Beers T.; van Altena, W Article WOS Core Collection The Astrophysical Journal Letters (2009)
QUEST1 Variability Survey. III. Light Curve Catalog Update Rengstorf, A; Thompson, D.; Mufson, S; Andrews P.; Honeycutt, R; Vivas, A. K.; et al. Article WOS Core Collection The Astrophysical Journal Supplement (2009)
Spectroscopy of bright quest RR Lyrae stars: Velocity substructures toward Virgo Vivas, AK; Jaffe, YL; Zinn, R; Winnick, R; Duffau S.; Mateu, C. Article ISI SCOPUS ASTRONOMICAL JOURNAL (2008)
25 Orionis: A Kinematically Distinct 10 Myr Old Group in Orion OB1a Briceno, C; Hartmann, L; Hernández J.; Calvet, N; Vivas, A. K.; Furesz G.; Szentgyorgyi A. Article WOS Core Collection The Astrophysical Journal (2007)
A Spitzer Space Telescope Study of Disks in the Young σ Orionis Cluster Hernández J.; Hartmann, L; Megeath, T; Gutermuth, R; Muzerolle J.; Calvet, N; Vivas, A. K.; Briceno, C; Allen L.; Stauffer, J; Young E.; Fazio, G. Article WOS Core Collection The Astrophysical Journal (2007)
Spitzer Observations of the Orion OB1 Association: Disk Census in the Low-Mass Stars Hernández J.; Calvet, N; Briceno, C; Hartmann, L; Vivas, A. K.; Muzerolle J.; Downes J.J.; Allen L.; Gutermuth, R Article WOS Core Collection The Astrophysical Journal (2007)
Spectroscopy of quest RR Lyrae variables: The new virgo stellar stream Duffau S.; Zinn, R; Vivas, AK; Carraro, G; Mendez, RA; Winnick, R; Gallart C. Article ISI SCOPUS ASTROPHYSICAL JOURNAL (2006)
The QUEST RR Lyrae Survey. II. The Halo Overdensities in the First Catalog Vivas, A. K.; Zinn, R Article WOS Core Collection The Astronomical Journal (2006)
The CIDA Variability Survey of Orion OB1. I. The Low-Mass Population of Ori OB1a and 1b Briceño, Cesar; Calvet, Nuria; Hernández J.; Vivas, A. K.; Hartmann, Lee; Downes J.J.; Berlind, Perry Article The Astronomical Journal (2005)
VLT Spectroscopy of RR Lyrae Stars in the Sagittarius Tidal Stream Vivas, A Katherina; Zinn, Robert; Gallart, Carme Article The Astronomical Journal (2005)
McNeil's Nebula in Orion: The outburst history Briceno, C; Vivas, AK; Hernández J.; Calvet, N; Hartmann, L; Megeath, T; Berlind, P; Calkins, M; Hoyer, S Article ISI ASTROPHYSICAL JOURNAL (2004)
New Quasars Detected via Variability in the QUEST1 Survey Rengstorf, A. W.; Mufson, S. L.; Abad C.; Adams, B; Andrews P.; Bailyn, C.; Baltay, C; Bongiovanni A.; Briceno, C; Bruzual G.; Coppi, P.; Della Prugna, F; Emmet, W; Ferrin, I; Fuenmayor, F; Gebhard, M; Hernández J.; Honeycutt, R. K.; Magris, G.; Musser, J; Naranjo, O.; Oemler, A; Rosenzweig, P.; Sabbey, C. N.; Sánchez GE; Sánchez, Gu.; Schaefer, B; Schenner, H; Sinnott, J; Snyder, J. A.; Sofia, S; Stock, J; van Altena, W; Vivas, A. K. Article THE ASTROPHYSICAL JOURNAL (2004)
QUEST1 Variability Survey. II. Variability Determination Criteria and 200k Light Curve Catalog Rengstorf, A. W.; Mufson, S. L.; Andrews P.; Honeycutt, R. K.; Vivas, A. K.; Abad C.; Adams, B; Bailyn, C.; Baltay, C; Bongiovanni A.; Briceno, C; Bruzual G.; Coppi, P.; Della Prugna, F; Emmet, W; Ferrin, I; Fuenmayor, F; Gebhard, M; Hernández J.; Magris, G.; Musser, J; Naranjo, O.; Oemler, A; Rosenzweig, P.; Sabbey, C. N.; Sánchez GE; Sánchez, Gu.; Schaefer, B; Schenner, H; Sinnott, J; Snyder, J. A.; Sofia, S; Stock, J; van Altena, W Article THE ASTROPHYSICAL JOURNAL (2004)
The QUEST RR Lyrae Survey. I. The First Catalog Vivas, A. K.; Zinn, R; Abad C.; Andrews P.; Bailyn, C.; Baltay, C; Bongiovanni A.; Briceo, C.; Bruzual G.; Coppi, P.; Della Prugna, F; Ellman N.; Ferrn, I.; Gebhard, M; Girard, T; Hernández J.; Herrera D.; Honeycutt, R; Magris, G.; Mufson, S; Musser, J; Naranjo, O.; Rabinowitz, D; Rengstorf, A; Rosenzweig, P.; Snchez, Ge.; Snchez, Gu.; Schaefer, B; Schenner, H; Snyder, J. A.; Sofia, S; Stock, J; van Altena, W; Vicente B.; Vieira, K. Article The Astronomical Journal (2004)
A Large‐Area CCD Camera for the Schmidt Telescope at the Venezuelan National Astronomical Observatory Baltay, C; Snyder, J. A.; Andrews P.; Emmet, W; Schaefer, B; Sinnott, J; Bailyn, C.; Coppi, P.; Oemler, A; Sabbey, C. N.; Sofia, S; van Altena, W; Vivas, A. K.; Abad C.; Bongiovanni A.; Briceno, C; Bruzual G.; Della Prugna, F; Magris, G.; Sánchez GE; Sánchez, Gu.; Schenner, H; Stock, J; Adams, B; Gebhard, M; Honeycutt, R. K.; Musser, J; Rengstorff, A.; Ferrin, I; Fuenmayor, F; Hernández J.; Naranjo, O.; Rosenzweig, P.; Harris, F; Geary J. Article PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC (2002)
Reddening-independent quasar selection from a wide-field optical and near-infrared imaging survey Sharp, R. G.; Sabbey, C. N.; Vivas, A. K.; Oemler, A; McMahon R.G.; Hodgkin S.T.; Coppi, P. S. Article MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2002)
Discovery of the Bright Trans-Neptunian Object 2000 EB[TINF]173[/TINF] Ferrin, Ignacio; Rabinowitz, D; Schaefer, B; Snyder, J; Ellman N.; Vicente B.; Rengstorf, A; Depoy D.; Salim, S.; Andrews P.; Bailyn, C.; Baltay, C; Briceno, C; Coppi, P.; Deng, M; Emmet, W; Oemler, A; Sabbey, C; Shin J.; Sofia, S; van Altena, W; Vivas K.; Abad C.; Bongiovanni A.; Bruzual G.; Della Prugna, F; Herrera D.; Magris, G.; Mateu, J; Pacheco R.; Sánchez GE; Sánchez, Gu.; Schenner, H; Stock, J; Vieira, K.; Fuenmayor, F; Hernández J.; Naranjo, O.; Rosenzweig, P.; Secco, C; Spavieri, G; Gebhard, M; Honeycutt, K; Mufson, S; Musser, J; Pravdo, S; Helin, E; Lawrence, K Article ASTROPHYSICAL JOURNAL
Discovery of the Optical Transient of GRB 990308 Schaefer, Bradley E.; Snyder, J. A.; Hernández J.; Roscherr, B; Deng, M; Ellman N.; Bailyn, C.; Rengstorf, A; Smith D.; Levine, A.; Barthelmy, S; Butterworth, P; Hurley K.; Cline, T; Meegan, C; Kouveliotou C.; Kippen, R. M.; Park H.S.; Williams, G. G.; Porrata, R; Bionta, R; Hartmann D.; Band, D; Frail, D; Kulkarni, S; Bloom J.; Djorgovski, S; Sadava, D; Chaffee, F; Harris, F; Abad C.; Adams, B; Andrews P.; Baltay, C; Bongiovanni A.; Briceno, C; Bruzual G.; Coppi, P.; Della Prugna, F; Dubuc, A; Emmet, W; Ferrin, I; Fuenmayor, F; Gebhard, M; Herrera D.; Honeycutt, K; Magris, G.; Mateu, J; Muffson, S; Musser, J; Naranjo, O.; Oemler, A; Pacheco R.; Paredes G.; Rengel M.; Romero, L; Rosenzweig, P.; Sabbey, C; Sánchez GE; Sánchez, Gu.; Schenner, H; Shin J.; Sinnott, J; Sofia, S; Stock, J; SUAREZ, J.; Telléria, D.; Vicente B.; Vieira, K.; Vivas K. Article ASTROPHYSICAL JOURNAL
The CIDA-QUEST Large-Scale Survey of Orion OB1: Evidence for Rapid Disk Dissipation in a Dispersed Stellar Population Briceno, C Article SCIENCE
The QUEST RR Lyrae Survey: Confirmation of the Clump at 50 Kiloparsecs and Other Overdensities in the Outer Halo Vivas, A. K.; Zinn, R; Andrews P.; Bailyn, C.; Baltay, C; Coppi, P.; Ellman N.; Girard, T; Rabinowitz, D; Schaefer, B; Shin J.; Snyder, J; Sofia, S; van Altena, W; Abad C.; Bongiovanni A.; Briceno, C; Bruzual G.; Della Prugna, F; Herrera D.; Magris, G.; Mateu, J; Pacheco R.; Sánchez GE; Sánchez, Gu.; Schenner, H; Stock, J; Vicente B.; Vieira, K.; Ferrin, I; Hernández J.; Gebhard, M; Honeycutt, R; Mufson, S; Musser, J; Rengstorf, A Article ASTROPHYSICAL JOURNAL


Sub-structures in the milky way's halo towards virgo Vivas, A. K.; Jaffé Y.L.; Mateu, C.; Zinn, R; Winnick, R; Duau S. ConferencePaper Revista Mexicana de Astronomia y Astrofisica: Serie de Conferencias (2009)
A new rr lyrae survey of the galactic halo using quest collaboration data Duffau S.V.; Méndez R.A.; Carraro, G; Zinn, R; Vivas, A. K.; Baltay, C ConferencePaper V WORKSHOP ON ROBOTIC AUTONOMOUS OBSERVATORIES, 2017 (2006)
Confirmation of halo substructure using quest RR lyrae data: The new virgo stellar stream (VSS) Duffau S.V.; Méndez R.A.; Carraro, G; Zinn, R; Winnick, R; Vivas, A. K.; Gallart C. ConferencePaper V WORKSHOP ON ROBOTIC AUTONOMOUS OBSERVATORIES, 2017 (2006)
Near-infrared photometry of the Galactic globular cluster NGC 6441 Dallâ€™Ora M.; Marconi, M; Ripepi, V; Storm, J; Bono, G; Caputo F.; Stetson, P. B.; Andreuzzi G.; Buonanno R.; Piersimoni, A; Monelli, M; Vanzi L.; Vivas, A. K. ConferencePaper Proceedings of the International Astronomical Union (2006)
VLT spectrosocpy of RR Lyrae stars in the Sagittarius northern tidal stream Duffau S.; Ruiz M.T.; Zinn, R; Vivas, A. K. ConferencePaper Proceedings of the International Astronomical Union (2006)