Jane R. Rigby

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The Nuclear Spectroscopic Telescope Array (NuSTAR) mission, launched on 13 June 2012, is the first focusing high-energy X-ray telescope in orbit. NuSTAR operates in the band from 3 – 79 keV, extending the sensitivity of focusing far beyond the ∼10 keV high-energy cutoff achieved by all previous X-ray satellites. The inherently low-background associated with(More)
Galaxy source counts in the infrared provide strong constraints on the evolution of the bolometric energy output from distant galaxy populations. We present the results from deep 24 m imaging from Spitzer surveys, which include 5 ;10 sources to an 80% completeness of ’60 Jy. The 24 m counts rapidly rise at near-Euclidean rates down to 5 mJy, increase with a(More)
We study the stellar and star formation properties of the host galaxies of 58 X-ray selected AGN in the GOODS portion of the Chandra Deep Field South (CDF-S) region at z ∼ 0.5− 1.4. The AGN are selected such that their rest-frame UV to near-infrared spectral energy distributions (SEDs) are dominated by stellar emission, i.e., they show a prominent 1.6μm(More)
Prior research has demonstrated the utility of metrics based on spatial velocity gradients to characterize and describe stream habitat, with higher gradients generally indicative of higher levels of physical heterogeneity and thus habitat quality. However, detailed velocity data needed to compute these metrics are difficult to obtain. Acoustic Doppler(More)
The relative entropy between the joint probability distribution of backward and forward sequences is used to quantify time asymmetry (or irreversibility) for stationary time series. The parallel with the thermodynamic theory of nonequilibrium steady states allows us to link the degree of asymmetry in the time signal with the distance from equilibrium and(More)
We derive galaxy source counts at 70 and 160 m using the Multiband Imaging Photometer for Spitzer (MIPS) to map the Chandra Deep Field–South (CDF-S) and other fields. At 70 m, our observations extend upward about 2 orders of magnitude in flux density from a threshold of 15 mJy, and at 160 m they extend about an order of magnitude upward from 50 mJy. The(More)
We use the source counts measured with the Multiband Imaging Photometer for Spitzer at 24, 70, and 160 m to determine the 5 confusion limits due to extragalactic sources: 56 Jy, 3.2 mJy, and 40 mJy at 24, 70, and 160 m, respectively. We also make predictions for confusion limits for a number of proposed far-infrared missions of larger aperture (3.5–10 m(More)
We have observed the dwarf galaxy IC 1613, at multiple epochs in the mid–infrared using Spitzer and contemporaneously in the near–infrared using the new FourStar nearIR camera on Magellan. We have constructed Cepheid period–luminosity relations in the J , H, Ks, [3.6] and [4.5] bands and have used the run of their apparent distance moduli as a function of(More)
We describe two peculiar galaxies falling into the massive galaxy clusters Abell 1689 (z≈0.18) and 2667 (z≈0.23) respectively. Hubble Space Telescope images show extraordinary trails composed of bright blue knots (-16.5< M <-11.5 mag) and stellar streams associated with each of these systems. Combining optical, near and midinfrared and radio observations we(More)