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Dive into the research topics where Ana Bonaca is active.

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Featured researches published by Ana Bonaca.


The Astrophysical Journal | 2015

Globular cluster streams as galactic high-precision scales : the poster child Palomar 5

Andreas H. W. Küpper; E. Balbinot; Ana Bonaca; Kathryn V. Johnston; David W. Hogg; Pavel Kroupa; B. Santiago

Using the example of the tidal stream of the Milky Way globular cluster Palomar 5 (Pal 5), we demonstrate how observational data on streams can be efficiently reduced in dimensionality and modeled in a Bayesian framework. Our approach combines detection of stream overdensities by a Difference-of-Gaussians process with fast streakline models, a continuous likelihood function built from these models, and inference with MCMC. By generating


The Astrophysical Journal | 2012

CALIBRATING CONVECTIVE PROPERTIES OF SOLAR-LIKE STARS IN THE KEPLER FIELD OF VIEW

Ana Bonaca; Joel D. Tanner; Sarbani Basu; W. J. Chaplin; T. S. Metcalfe; M. J. P. F. G. Monteiro; J. Ballot; Timothy R. Bedding; Alfio Bonanno; Anne-Marie Broomhall; H. Bruntt; T. L. Campante; Jørgen Christensen-Dalsgaard; E. Corsaro; Y. Elsworth; R. A. García; S. Hekker; C. Karoff; Hans Kjeldsen; S. Mathur; C. Regulo; Ian W. Roxburgh; D. Stello; Regner Trampedach; Christopher J. Burke; Douglas A. Caldwell

\approx10^7


The Astrophysical Journal | 2012

A COLD MILKY WAY STELLAR STREAM IN THE DIRECTION OF TRIANGULUM

Ana Bonaca; Marla Geha; Nitya Kallivayalil

model streams, we show that the geometry of the Pal 5 debris yields powerful constraints on the solar position and motion, the Milky Way and Pal 5 itself. All 10 model parameters were allowed to vary over large ranges without additional prior information. Using only SDSS data and a few radial velocities from the literature, we find that the distance of the Sun from the Galactic Center is


The Astrophysical Journal | 2013

Constraining the Star Formation Histories in Dark Matter Halos. I. Central Galaxies

Xiaohu Yang; H. J. Mo; Frank C. van den Bosch; Ana Bonaca; Shijie Li; Yi Lu; Yu Lu; Zhankui Lu

8.30\pm0.25


The Astronomical Journal | 2012

UPDATE ON THE NATURE OF VIRGO OVERDENSITY

Ana Bonaca; Mario Juric; Željko Ivezić; Dmitry Bizyaev; Howard J. Brewington; Elena Malanushenko; Viktor Malanushenko; Daniel Oravetz; Kaike Pan; Alaina Shelden; Audrey Simmons; Stephanie A. Snedden

kpc, and the transverse velocity is


The Astrophysical Journal | 2018

They Might Be Giants: An Efficient Color-based Selection of Red Giant Stars

Charlie Conroy; Ana Bonaca; Rohan P. Naidu; Daniel J. Eisenstein; Benjamin D. Johnson; Aaron Dotter; Douglas P. Finkbeiner

253\pm16


The Astrophysical Journal | 2018

Off the Beaten Path: Gaia Reveals GD-1 Stars outside of the Main Stream

Adrian M. Price-Whelan; Ana Bonaca

km/s. Both estimates are in excellent agreement with independent measurements of these quantities. Assuming a standard disk and bulge model, we determine the Galactic mass within Pal 5s apogalactic radius of 19 kpc to be


The Astrophysical Journal | 2018

Investigating the Metallicity–Mixing-length Relation

Lucas S. Viani; Sarbani Basu; Joel J. M. Ong; Ana Bonaca; W. J. Chaplin

(2.1\pm0.4)\times10^{11}


arXiv: Astrophysics of Galaxies | 2015

Globular Cluster Streams as Galactic High-Precision Scales

Andreas H. W. Küpper; E. Balbinot; Ana Bonaca; Kathryn V. Johnston; David W. Hogg; Pavel Kroupa; B. Santiago

M


The Astrophysical Journal | 2014

Milky Way Mass and Potential Recovery Using Tidal Streams in a Realistic Halo

Ana Bonaca; Marla Geha; Andreas H. W. Küpper; Jürg Diemand; Kathryn V. Johnston; David W. Hogg

_\odot

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W. J. Chaplin

University of Birmingham

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B. Santiago

Universidade Federal do Rio Grande do Sul

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