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Introduction
I am continuing my research in the extended ionized gas of the Magellanic System, with the ionized gas in the Magellanic Stream the next major focus of my study.
In addition to my Magellanic research, I am helping with a data reduction pipeline for the MeerKAT survey to produce a large spectral index catalogue for the sources within the survey.
Publications
Publications (20)
Observations with the Wisconsin Mapper reveal a large, diffuse ionized halo that surrounds the Small Magellanic Cloud (SMC). We present the first kinematic survey of an extended region around the galaxy, from to and covering . The ionized gas emission extends far beyond the central stellar component of the galaxy, reaching similar distances to that...
The Large Magellanic Cloud (LMC) has an extensive H$_{\alpha}$ emission halo that traces an extended, warm ionized component of its interstellar medium. Using the Wisconsin H$_{\alpha}$ Mapper (WHAM) telescope, we present the first kinematic \ha\ survey of an extensive region around the LMC, from $l,b = (264\deg .5,\,-45\deg .5)$ to $(295\deg .5,\,...
The Large Magellanic Cloud (LMC) has an extensive H α emission halo that traces an extended, warm ionized component of its interstellar medium. Using the Wisconsin H α Mapper telescope, we present the first kinematic H α survey of an extensive region around the LMC, from ( ℓ , b ) = (264.°5, − 45.°5) to (295.°5, − 19.°5), covering +150 ≤ v LSR ≤ +...
Observations with the Wisconsin H-alpha Mapper (WHAM) reveal a large, diffuse ionized halo that surrounds the Small Magellanic Cloud (SMC). We present the first kinematic H-alpha survey of an extended region around the galaxy, from (l,b) = (289.5,-35.0) to (315.1,-5.3) and covering +90 <= vLSR <= +210 km s-1. The ionized gas emission extends far be...
We describe our spectroscopic follow-up to the Local Group Galaxy Survey (LGGS) photometry of M31 and M33. We have obtained new spectroscopy of 1895 stars, allowing us to classify 1496 of them for the first time. Our study has identified many foreground stars, and established membership for hundreds of early- and mid-type supergiants. We have also...
We describe our spectroscopic follow-up to the Local Group Galaxy Survey (LGGS) photometry of M31 and M33. We have obtained new spectroscopy of 1895 stars, allowing us to classify 1496 of them for the first time. Our study has identified many foreground stars, and established membership for hundreds of early- and mid-type supergiants. We have also...
Transits of exoplanets observed in the near-UV have been used to study the scattering properties of their atmospheres and
possible star-planet interactions. We observed the primary transits of 15 exoplanets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b,
HAT-P-16b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-12b, WASP-33b, WASP-36b, WASP-44b, WASP-48b, and...
Transits of exoplanets observed in the near-UV have been used to study the scattering properties of their atmospheres and possible star-planet interactions. We observed the primary transits of 15 exoplanets (CoRoT-1b, GJ436b, HAT-P-1b, HAT-P-13b, HAT-P-16b, HAT-P-22b, TrES-2b, TrES-4b, WASP-1b, WASP-12b, WASP-33b, WASP-36b, WASP-44b, WASP-48b, and...
The University of Arizona Astronomy Club has been working on two large group research projects since 2009. One research project is a transiting extrasolar project that is fully student led and run. We observed the transiting extrasolar planets , TrES-3b and TrES-4b, with the 1.55 meter Kuiper Telescope using different filters to test a proposed met...
The Large and Small Magellanic Clouds are two of the nearest galaxies to
our own Milky Way, and have played important roles as astrophysical
laboratories for understanding the stellar populations of galaxies.
While they are known to be an interacting pair, they have always been
viewed as distinct galaxies. In 2011, Olsen et al. made the surprising...
Studying the magnetic fields of exoplanets allow for the investigation
of their interior structure and rotation period, the presence of
extrasolar moons, atmospheric retention, and potential habitability. We
observed the primary transits of the hot Jupiters TrES-3b, WASP-12b,
TrES-4b, WASP-26b, WASP-33b, HAT-P-1b, WASP-14b, HAT-P-6b, XO-2b,
CoRoT-9...
The University of Arizona Astronomy Club has been using group research
projects to enhance the learning experience of undergraduates in
astronomy and related fields. Students work on two projects that employ
a peer-mentoring system so they can learn crucial skills and concepts
necessary in research environments. Students work on a transiting
exopla...
We observed nine primary transits of the hot Jupiter TrES-3b in several
optical and near-UV photometric bands from 2009 June to 2012 April in an
attempt to detect its magnetic field. Vidotto, Jardine and Helling suggest that
the magnetic field of TrES-3b can be constrained if its near-UV light curve
shows an early ingress compared to its optical li...
We observed four primary transits of the transiting exoplanet WASP-12b
with the Steward Observatory 1.55 meter Kuiper Telescope using near-UV
and optical filters and with the UVW1 near-UV filter on NASA’s
Swift satellite. It has been proposed that you can detect the magnetic
field of a transiting exoplanet by observing asymmetries in their
near-UV...
Recent observations of transiting extrasolar planets in near-UV and
optical bands, by Vidotto et al. 2011, suggest that asymmetries in light
curve ingress times indicate the presence of a magnetic field. The
University of Arizona Astronomy Club observed primary transits of
extrasolar planet TrES-3b using the 1.55m Kuiper Telescope in the U, B,
V, a...
The Planck satellite is studying the power spectrum of the Cosmic
Microwave Background (CMB), and has found foreground contamination
including dust emission from the Galaxy. The Planck Cold Core Team has
been cataloging and characterizing this foreground emission. An initial
catalog of over 10,000 objects, the Cold Core Census of Planck Objects
(C3...
The University of Arizona Astronomy Club has been working on two large
group research projects since 2009. One research project is a transiting
extrasolar planet project that is fully student led and run. We observed
the transiting exoplanets, TrES-3b and TrES-4b, with the 1.55 meter
Kupier Telescope in near-UV and optical filters in order to detec...
Using the Steward Observatory 61" Kuiper Telescope, The University of Arizona Astronomy Club observed extrasolar planets TrES-3b and TrES-4b. We observed the planets with the Harris-B, V, and R filters as they transited their parent stars during the months of May-July 2009. The main goal of this project was to get undergraduates involved with a res...
M31 and M33 are important galaxies to study when trying to understand
stellar evolution. We observed 1,717 objects at the 6.5-m MMT using the
300-fiber fed spectrometer, Hectospec, in order to find massive stars in
M31 and M33, of which 904 were from sources in M31 and M33. Of these
sources, 129 O-type, 601 B-type supergiant, 81 A-type supergiant,...
The l=29-31 line-of-sight in the plane of the Milky Way crosses two spiral arms, the edge of the molecular ring, and the end of the central Galactic bar. This direction was the initial target region of a survey of the Galactic plane at far-infrared wavelengths with the Herschel Space Observatory (HiGal). 554 1.1 mm continuum clumps have been identi...
