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…
3D-HST WFC3-selected Photometric Catalogs in the Five CANDELS/3D-HST Fields: Photometry, Photometric Redshifts, and Stellar Masses
Maseda, Michael V.; van Dokkum, Pieter G.; Franx, Marijn +24 more
The 3D-HST and CANDELS programs have provided WFC3 and ACS spectroscopy and photometry over ≈900 arcmin2 in five fields: AEGIS, COSMOS, GOODS-North, GOODS-South, and the UKIDSS UDS field. All these fields have a wealth of publicly available imaging data sets in addition to the Hubble Space Telescope (HST) data, which makes it possible t…
The McGill Magnetar Catalog
Kaspi, V. M.; Olausen, S. A.
We present a catalog of the 26 currently known magnetars and magnetar candidates. We tabulate astrometric and timing data for all catalog sources, as well as their observed radiative properties, particularly the spectral parameters of the quiescent X-ray emission. We show histograms of the spatial and timing properties of the magnetars, comparing …
The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars
Maíz Apellániz, J.; Alfaro, E. J.; Barbá, R. H. +5 more
We present the second installment of GOSSS, a massive spectroscopic survey of Galactic O stars, based on new homogeneous, high signal-to-noise ratio, R ~ 2500 digital observations from both hemispheres selected from the Galactic O-Star Catalog (GOSC). In this paper we include bright stars and other objects drawn mostly from the first version of GO…
An Atlas of Galaxy Spectral Energy Distributions from the Ultraviolet to the Mid-infrared
Imanishi, Masatoshi; Peek, J. E. G.; Moustakas, John +6 more
We present an atlas of 129 spectral energy distributions for nearby galaxies, with wavelength coverage spanning from the ultraviolet to the mid-infrared. Our atlas spans a broad range of galaxy types, including ellipticals, spirals, merging galaxies, blue compact dwarfs, and luminous infrared galaxies. We have combined ground-based optical drift-s…