Search Publications
The Nature of Hard X-Ray (3-24 keV) Detected Luminous Infrared Galaxies in the COSMOS Field
Ueda, Yoshihiro; Matsuoka, Kenta
We investigate the nature of far-infrared (70 µm) and hard X-ray (3-24 keV) selected galaxies in the COSMOS field detected with both Spitzer and the Nuclear Spectroscopic Telescope Array (NuSTAR). By matching the Spitzer-COSMOS catalog with the NuSTAR-COSMOS catalog, we obtain a sample consisting of a hyperluminous infrared galaxy with {log}…
ALMA Maps of Dust and Warm Dense Gas Emission in the Starburst Galaxy IC 5179
van der Werf, Paul; Gao, Yu; Zhang, Zhi-Yu +6 more
We present our high-resolution (0.″15 × 0.″13, ∼34 pc) observations of the CO (6-5) line emission, which probes the warm and dense molecular gas, and the 434 µm dust continuum emission in the nuclear region of the starburst galaxy IC 5179, conducted with the Atacama Large Millimeter Array (ALMA). The CO (6-5) emission is spatially distribute…
The Hawaii SCUBA-2 Lensing Cluster Survey: Radio-detected Submillimeter Galaxies in the HST Frontier Fields
Smail, Ian; Heywood, Ian; Desai, Vandana +5 more
In this second paper of the Hawaii SCUBA-2 Lensing Cluster Survey series, we cross-match SCUBA-2 maps with 3 and 6 GHz images from the Janksy-VLA Frontier Fields Legacy Survey for three cluster fields, MACS J0416.1-2403, MACS J0717.5+3745, and MACS J1149.5+2223. Within the HST coverage, 14 out of 44 850 µm sources have 3 GHz counterparts, fi…
Neon-like Iron Ion Lines Measured in NIFS/Large Helical Device (LHD) and Hinode/EUV Imaging Spectrometer (EIS)
Hara, Hirohisa; Watanabe, Tetsuya; Murakami, Izumi +7 more
Line intensities emerging from the Ne-sequence iron ion (Fe XVII) are measured in the laboratory, by the Large Helical Device at the National Institute for Fusion Science, and in the solar corona by the EUV Imaging Spectrometer (EIS) on board the Hinode mission. The intensity ratios of Fe XVII λ 204.6/λ 254.8 are derived in the laboratory by unble…
Absolute Dimensions of the F-type Eclipsing Binary V2154 Cygni
Torres, Guillermo; Bright, Jane C.
We report spectroscopic observations of the 2.63 day, detached, F-type main-sequence eclipsing binary V2154 Cyg. We use our observations together with existing uvby photometric measurements to derive accurate absolute masses and radii for the stars that are good to better than 1.5%. We obtain masses of {M}1=1.269+/- 0.017 {M}⊙
SG1120-1202: Mass-quenching as Tracked by UV Emission in the Group Environment at z=0.37
Tran, Kim-Vy H.; Gonzalez, Anthony H.; Monroe, Jonathan T.
We use the Hubble Space Telescope to obtain WFC3/F390W imaging of the supergroup SG1120-1202 at z=0.37, mapping the UV emission of 138 spectroscopically confirmed members. We measure total (F390W-F814W) colors and visually classify the UV morphology of individual galaxies as “clumpy” or “smooth.” Approximately 30% of the members have pockets of UV…
Shock-Cloud Interaction in the Solar Corona
Takahashi, Takuya
Flare-associated coronal shock waves sometimes interact with solar prominences, leading to large-amplitude prominence oscillations (LAPOs). Such prominence activation gives us a unique opportunity to track the time evolution of shock-cloud interaction in cosmic plasmas. Although the dynamics of interstellar shock-cloud interaction has been extensi…
The Discovery and Origin of a Very High-velocity Cloud Toward M33
Peek, J. E. G.; Zheng, Y.; Putman, M. E. +1 more
We report the detection of a largely ionized very high-velocity cloud (VHVC; vLSR∼ -350 km s-1) toward M33 with the Hubble Space Telescope/Cosmic Origin Spectrograph. The VHVC is detected in O I, C II, Si II, and Si III absorption along five sightlines separated by ∼ 0.06-0.4°. On sub-degree scales, the velocities and ionic c…
Spatial Offsets in Flare-CME Current Sheets
Giordano, Silvio; Raymond, John C.; Ciaravella, Angela
Magnetic reconnection plays an integral part in nearly all models of solar flares and coronal mass ejections (CMEs). The reconnection heats and accelerates the plasma, produces energetic electrons and ions, and changes the magnetic topology to form magnetic flux ropes and to allow CMEs to escape. Structures that appear between flare loops and CME …
First Characterization of the Neutral ISM in Two Local Volume Dwarf Galaxies
Cannon, John M.; Mizener, Andrew; Bralts-Kelly, Lilly +9 more
We present the first H I spectral-line images of the nearby, star-forming dwarf galaxies UGC 11411 and UGC 8245, acquired as part of the “Observing for University Classes” program with the Karl G. Jansky Very Large Array (VLA). These low-resolution images localize the H I gas and reveal the bulk kinematics of each system. Comparing with Hubble Spa…