Publications (17)
Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b
Nikole K. Lewis, Heather A. Knutson, Adam P. Showman +20
We present the first secondary eclipse and phase curve observations for the highly eccentric hot Jupiter HAT-P-2b in the 3.6, 4.5, 5.8, and 8.0 μm bands of the Spitzer Space Teles…
Stellar Photometry and Astrometry with Discrete Point Spread Functions
Kenneth J. Mighell
The key features of the MATPHOT algorithm for precise and accurate stellar photometry and astrometry using discrete Point Spread Functions are described. A discrete Point Spread Fu…
Benchmarking CRBLASTER on the 350-MHz 49-core Maestro Development Board
Kenneth J. Mighell
I describe the performance of the CRBLASTER computational framework on a 350-MHz 49-core Maestro Development Board (MDB). The 49-core Interim Test Chip (ITC) was developed by the U…
WFPC2 Observations of Star Clusters in the Magellanic Clouds. II. The Oldest Star Clusters in the Small Magellanic Cloud
Kenneth J. Mighell, Ata Sarajedini, Rica S. French
We present our analysis of archival Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) observations in F450W (~B) and F555W (~V) of the intermediate- age populous star cl…
The Star Formation History of M32
Antonela Monachesi, Scott C. Trager, Tod R. Lauer +5
We use deep HST ACS/HRC observations of a field within M32 (F1) and an M31 background field (F2) to determine the star formation history (SFH) of M32 from its resolved stellar popu…
The Deepest HST Color-Magnitude Diagram of M32: Evidence for Intermediate-Age Populations
Antonela Monachesi, Scott C. Trager, Tod R. Lauer +4
We present the deepest optical color-magnitude diagram (CMD) to date of the local elliptical galaxy M32. We have obtained F435W and F555W photometry based on HST ACS/HRC images for…
WFPC2 Observations of the Carina Dwarf Spheroidal Galaxy
Kenneth J. Mighell
We present our analysis of Hubble Space Telescope Wide Field Planetary Camera 2 observations in F555W (~V) and F814W (~I) of the Carina dwarf spheroidal galaxy. The resulting V vs…
A GPU-Computing Approach to Solar Stokes Profile Inversion
Brian J. Harker, Kenneth J. Mighell
We present a new computational approach to the inversion of solar photospheric Stokes polarization profiles, under the Milne-Eddington model, for vector magnetography. Our code, na…
Period Error Estimation for the Kepler Eclipsing Binary Catalog
Kenneth J. Mighell, Peter Plavchan
The Kepler Eclipsing Binary Catalog (KEBC)describes 2165 eclipsing binaries identified in the 115 deg^2 Kepler Field based on observations from Kepler quarters Q0, Q1, and Q2. The…
WFPC2 Observations of the Ursa Minor Dwarf Spheroidal Galaxy
Kenneth J. Mighell, Christopher J. Burke
We present our analysis of archival Hubble Space Telescope Wide Field Planetary Camera 2 (WFPC2) observations in F555W (~V) and F814W (~I) of the central region of the Ursa Minor d…
Parameter Estimation in Astronomy with Poisson-Distributed Data. II. The Modified Chi-Square-Gamma Statistic
Kenneth J. Mighell
I investigate the use of Pearson's chi-square statistic, the Maximum Likelihood Ratio statistic for Poisson distributions, and the chi-square-gamma statistic (Mighell 1999, ApJ, 51…
The Variable Sky of Deep Synoptic Surveys
Stephen T. Ridgway, Thomas Matheson, Kenneth J. Mighell +2
The discovery of variable and transient sources is an essential product of synoptic surveys. The alert stream will require filtering for personalized criteria -- a process managed…
WFPC2 Observations of the Small Magellanic Cloud Intermediate-Age Populous Cluster NGC 416
Kenneth J. Mighell, Ata Sarajedini, Rica S. French
We present our analysis of archival Hubble Space Telescope Wide Field Planetary Camera 2 observations in F555W (~V) and F450W (~B) of the intermediate-age populous star cluster NGC…
Parameter Estimation in Astronomy with Poisson-Distributed Data. I. The Chi-Square-Gamma Statistic
Kenneth J. Mighell
Applying the standard weighted mean formula, [sum_i {n_i sigma^{-2}_i}] / [sum_i {sigma^{-2}_i}], to determine the weighted mean of data, n_i, drawn from a Poisson distribution, wi…
RR Lyrae Variables in Two Fields in the Spheroid of M31
Ata Sarajedini, Conor L. Mancone, Tod R. Lauer +5
We present Hubble Space Telescope observations taken with the Advanced Camera for Surveys Wide Field Channel of two fields near M32 - between four and six kpc from the center of M3…
Astrometry of the Omega Centauri Hubble Space Telescope Calibration Field
Kenneth J. Mighell
Astrometry, on the International Celestial Reference Frame (epoch J2000.0), is presented for the Walker (1994, PASP, 106, 828) stars in the Omega Centauri (= NGC 5139 = C1323-1472)…
RR Lyrae variables in M32 and the disk of M31
Giuliana Fiorentino, Antonela Monachesi, Scott C. Trager +7
We observed two fields near M32 with the Advanced Camera for Surveys/High Resolution Channel (ACS/HRC) on board the Hubble Space Telescope (HST). The main field, F1, is 1.8 arcmin…