A5026544812- Stellar, planetary, and galactic studies
- Astronomy and Astrophysical Research
- Astrophysics and Star Formation Studies
- Astronomical Observations and Instrumentation
- Gamma-ray bursts and supernovae
- Geophysics and Gravity Measurements
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Astrophysics and Cosmic Phenomena
- Spectroscopy and Laser Applications
- Galaxies: Formation, Evolution, Phenomena
- Solar and Space Plasma Dynamics
- Radio Astronomy Observations and Technology
- Spectroscopy and Chemometric Analyses
- Astrophysical Phenomena and Observations
- Astro and Planetary Science
- Scientific Research and Discoveries
- History and Developments in Astronomy
- Particle Accelerators and Free-Electron Lasers
- Atmospheric Ozone and Climate
- Calibration and Measurement Techniques
- Methane Hydrates and Related Phenomena
- Particle accelerators and beam dynamics
University of Washington
2023-2024
University of Hertfordshire
2019-2024
City University of Seattle
2023
University of Wisconsin–Madison
2016-2023
University of Arizona
2012-2016
Lowell Observatory
2016
Transits of exoplanets observed in the near-UV have been used to study scattering properties their atmospheres and possible star–planet interactions. We primary transits 15 (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, WASP-77Ab) several optical photometric bands update planetary parameters, ephemerides, search for a wavelength dependence transit depths constrain atmospheres, determine if asymmetries...
ABSTRACT We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half (251° ≤l ≤ 358° and 2° 61° at |b| $1{_{.}^{\circ}}5$). SMGPS is largest, most sensitive, highest angular resolution 1 plane yet carried out, with an 8 arcsec broad-band root-mean-square sensitivity ∼10–20 μJy beam−1. Here, we describe first publicly available data release from which comprises cubes frequency-resolved images over 908–1656 MHz, power-law fits to images, zeroth moment...
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 an attempt detect its magnetic field. Vidotto, Jardine Helling suggest that field can be constrained if light curve shows early ingress compared curve, while egress remains unaffected. Predicted strengths Jupiter-like planets should range between 8 G 30 G. Using these values assumed B_star 100 G, Vidotto et al. method predicts a timing difference 5-11...
We describe our spectroscopic follow-up to the Local Group Galaxy Survey (LGGS) photometry of M31 and M33. have obtained new spectroscopy 1895 stars, allowing us classify 1496 them for first time. Our study has identified many foreground established membership hundreds early- mid-type supergiants. also found 9 candidate Luminous Blue Variables a previously unrecognized Wolf-Rayet star. republish LGGS M33 catalogs with improved coordinates including from literature results. The in this paper...
The Large Magellanic Cloud (LMC) has an extensive H$_{\alpha}$ emission halo that traces extended, warm ionized component of its interstellar medium. Using the Wisconsin Mapper (WHAM) telescope, we present first kinematic \ha\ survey region around LMC, from $l,b = (264\deg .5,\,-45\deg .5)$ to $(295\deg .5,\,-19\deg .5)$, covering $+150\leq v_{lsr} \leq +390~ km s^{-1}$. We find hydrogen exists throughout galaxy and extends several degrees beyond detected neutral $(\log{\left(N_{\rm...
Abstract Observations with the Wisconsin <?CDATA ${\rm{H}}\alpha $?> Mapper reveal a large, diffuse ionized halo that surrounds Small Magellanic Cloud (SMC). We present first kinematic survey of an extended region around galaxy, from $({\ell },b)=(289\buildrel{\circ}\over{.} 5,-35\buildrel{\circ}\over{.} 0)$?> to $(315\buildrel{\circ}\over{.} 1,-5\buildrel{\circ}\over{.} 3)$?> and covering $+90\leqslant {v}_{\mathrm{LSR}}\leqslant +210\ \mathrm{km}\,{{\rm{s}}}^{-1}$?> . The gas emission...
ABSTRACT We report a study exploring how the use of deep neural networks with astronomical Big Data may help us find and uncover new insights into underlying phenomena: through our experiments towards unsupervised knowledge extraction from we serendipitously found that convolutional autoencoders tend to reject telluric lines in stellar spectra. With further experiments, only when spectra are barycentric frame does network automatically identify statistical independence between two...
Abstract We present the first spectroscopically resolved H α emission map of Large Magellanic Cloud’s (LMC) galactic wind. By combining new Wisconsin H-alpha Mapper observations ( I ≳ 10 mR) with existing i 21 cm observations, we (1) mapped LMC’s nearside wind over a local standard rest (LSR) velocity range +50 ≤ v LSR +250 km s −1 , (2) determined its morphology and extent, (3) estimated mass, outflow rate, mass-loading factor. observe from this to typically 1° off disk. Kinematically, find...
We present the SARAO MeerKAT Galactic Plane Survey (SMGPS), a 1.3 GHz continuum survey of almost half (251\deg $\le l \le$ 358\deg and 2\deg 61\deg at $|b| \le 1.5\deg $). SMGPS is largest, most sensitive highest angular resolution 1 yet carried out, with an 8" broadband RMS sensitivity $\sim$10--20 $\mu$ Jy/beam. Here we describe first publicly available data release from which comprises cubes frequency-resolved images over 908--1656 MHz, power law fits to images, zeroth moment integrated...
We report a study exploring how the use of deep neural networks with astronomical Big Data may help us find and uncover new insights into underlying phenomena: through our experiments towards unsupervised knowledge extraction from we serendipitously found that convolutional autoencoders tend to reject telluric lines in stellar spectra. With further only when spectra are barycentric frame does network automatically identify statistical independence between two components, vs telluric, rejects...