Search Publications
Missions
Journals
Publication Years
The Filamentary Radio Lobes of the Seyfert-Starburst Composite Galaxy NGC 3079
O'Dea, C. P.; Baum, S. A.; Kharb, P. +2 more
We present results from multifrequency polarization-sensitive Very Large Array observations of the Seyfert-starburst composite galaxy NGC 3079. Our sensitive radio observations reveal a plethora of radio “filaments” comprising the radio lobes in this galaxy. We analyze the origin of these radio filaments in the context of existing Chandra X-ray an…
Detection and Doppler monitoring of K2-285 (EPIC 246471491), a system of four transiting planets smaller than Neptune
Kuzuhara, M.; Alonso, R.; Deeg, H. +43 more
Context. The Kepler extended mission, also known as K2, has provided the community with a wealth of planetary candidates that orbit stars typically much brighter than the targets of the original mission. These planet candidates are suitable for further spectroscopic follow-up and precise mass determinations, leading ultimately to the construction …
Magnetic Field Strengths and Variations in Grain Alignment in the Local Bubble Wall
Andersson, B. -G.; Medan, Ilija
Optical and infrared continuum polarization from the interstellar medium is known to generally be due to irregular dust grains aligned with the magnetic field. This provides an important tool to probe the geometry and strength of those fields, particularly if the variations in the grain alignment efficiencies can be understood. Here, we examine po…
New online database of symbiotic variables: Symbiotics in X‑rays
Merc, J.; Gális, R.; Wolf, M.
Symbiotic variable stars belong to an interesting class of interacting binary systems. Since the beginning of this century, the systematic search for these objects has begun, and such surveys have led to discoveries of many new objects and dozens of candidates in the Milky Way and the Local Group. As the latest catalogue of symbiotic binaries is a…
Identifying transient and variable sources in radio images
Eislöffel, J.; Wijers, R. A. M. J.; Fender, R. +16 more
With the arrival of a number of wide-field snapshot image-plane radio transient surveys, there will be a huge influx of images in the coming years making it impossible to manually analyse the datasets. Automated pipelines to process the information stored in the images are being developed, such as the LOFAR Transients Pipeline, outputting light cu…
The REASONS Survey: Resolved Millimeter Observations of a Large Debris Disk around the Nearby F Star HD 170773
MacGregor, Meredith A.; Matthews, Brenda C.; Wilner, David J. +15 more
Debris disks are extrasolar analogs to our own Kuiper Belt and they are detected around at least 17% of nearby Sun-like stars. The morphology and dynamics of a disk encode information about its history, as well as that of any exoplanets within the system. We used the Atacama Large Millimeter/submillimeter Array (ALMA) to obtain 1.3 mm observations…
The Quick and the Dead: Finding the Surviving Binary Companions of Galactic Supernovae with Gaia
Boubert, Douglas; Fraser, Morgan
We use Gaia Data Release 2 to search for possible surviving binary companions to three of the best-studied historical Milky Way core-collapse supernovae. Consistent with previous work, we find there to be no plausible binary companion to either the Crab or Cas A supernovae. For the first time, we present a systematic search for a former companion …
Bundle adjustment of satellite images based on an equivalent geometric sensor model with digital elevation model
Cao, Hui; Tao, Pengjie; Li, Haihong +1 more
High-precision georeferencing of satellite stereo images becomes a key issue in multi-source data integration, geometric processing, and analysis for many remote sensing applications. Using existing geographic data, including readily available public data, as geometric reference for georeferencing satellite imagery is an effective and feasible way…
First Subarcsecond Submillimeter-wave [C I] Image of 49 Ceti with ALMA
Iwasaki, Kazunari; Yamamoto, Satoshi; Sakai, Nami +7 more
We present the first subarcsecond images of 49 Ceti in the [C I] 3 P 1-3 P 0 emission and the 614 µm dust continuum emission observed with Atacama Large Millimeter/submillimeter Array (ALMA), as well as that in the CO(J = 3-2) emission prepared by using the ALMA archival data. The spatial distribut…
Correlation between SFR Surface Density and Thermal Pressure of Ionized Gas in Local Analogs of High-redshift Galaxies
Malhotra, Sangeeta; Yang, Huan; Rhoads, James E. +1 more
We explore the relation between the star formation rate surface density (ΣSFR) and the interstellar gas pressure for nearby compact starburst galaxies. The sample consists of 17 green peas and 19 Lyman break analogs (LBAs). Green peas are nearby analogs of Lyα emitters at high redshift and LBAs are nearby analogs of Lyman break galaxies at high re…