Search Publications
Exploring the Possibility of O and Ne Contamination in Ulysses Observations of Interstellar Helium
Wood, Brian E.; Müller, Hans-Reinhard; Möbius, Eberhard +4 more
We explore the possibility that interstellar O and Ne may be contributing to the particle signal from the GAS instrument on Ulysses, which is generally assumed to be entirely He. Motivating this study is the recognition that an interstellar temperature higher than any previously estimated from Ulysses data could potentially resolve a discrepancy b…
The Warm CO Gas along the UV-heated Outflow Cavity Walls: A Possible Interpretation for the Herschel/PACS CO Spectra of Embedded YSOs
Lee, Jeong-Eun; Bergin, Edwin A.; Lee, Seokho
A fraction of the mid-J (J = 14-13 to J = 24-23) CO emission detected by the Herschel/Photodetector Array Camera and Spectrometer observations of embedded young stellar objects (YSOs) has been attributed to the UV-heated outflow cavity walls. We have applied our newly developed self-consistent models of photon-dominated-region (PDR) and non-local-…
“Dust, Ice, and Gas In Time” (DIGIT) Herschel Observations of GSS30-IRS1 in Ophiuchus
Lee, Jeong-Eun; Green, Joel D.; Je, Hyerin +2 more
As a part of the “Dust, Ice, and Gas In Time” (DIGIT) key program on Herschel, we observed GSS30-IRS1, a Class I protostar located in Ophiuchus (d = 120 pc), with Herschel/Photodetector Array Camera and Spectrometer. More than 70 lines were detected within a wavelength range from 50 to 200 µ m, including CO, H2O, OH, and two atomi…
An Atlas of Bright Star Spectra in the Near-infrared from Cassini-VIMS
Nicholson, Philip D.; Hedman, Matthew M.; Sloan, G. C. +2 more
We present the Cassini Atlas Of Stellar Spectra (CAOSS), comprised of near-infrared, low-resolution spectra of bright stars recovered from space-based observations by the Cassini spacecraft. The 65 stellar targets in the atlas are predominately M, K, and S giants. However, it also contains spectra of other bright nearby stars including carbon star…
Star Cluster Disruption in the Starburst Galaxy Messier 82
de Grijs, Richard; Li, Chengyuan; Li, Shuo +1 more
Using high-resolution, multiple-passband Hubble Space Telescope images spanning the entire optical/near-infrared wavelength range, we obtained a statistically complete U-band-selected sample of 846 extended star clusters across the disk of the nearby starburst galaxy M82. Based on a careful analysis of the clusters' spectral energy distributions, …
A CMB Gibbs Sampler for Localized Secondary Anisotropies
Bull, Philip; Ferreira, Pedro G.; Wehus, Ingunn K. +4 more
In addition to primary fluctuations, cosmic microwave background (CMB) temperature maps contain a wealth of additional information in the form of secondary anisotropies. However, secondary effects that can be identified with individual objects, such as the thermal and kinetic Sunyaev-Zel’dovich (TSZ-KSZ) effects due to galaxy clusters, are difficu…