Search Publications
Finding Quasars behind the Galactic Plane. I. Candidate Selections with Transfer Learning
Feng, Xiaotong; Brown, Anthony G. A.; Yang, Qian +4 more
Quasars behind the Galactic plane (GPQs) are important astrometric references and useful probes of Milky Way gas. However, the search for GPQs is difficult due to large extinctions and high source densities in the Galactic plane. Existing selection methods for quasars developed using high Galactic latitude (high-b) data cannot be applied to the Ga…
Molecules with ALMA at Planet-forming Scales (MAPS). XVI. Characterizing the Impact of the Molecular Wind on the Evolution of the HD 163296 System
Zhang, Ke; Wilner, David J.; Ménard, François +27 more
During the main phase of evolution of a protoplanetary disk, accretion regulates the inner-disk properties, such as the temperature and mass distribution, and in turn, the physical conditions associated with planet formation. The driving mechanism behind accretion remains uncertain; however, one promising mechanism is the removal of a fraction of …
Classical Novae at Radio Wavelengths
Ryder, Stuart D.; Bannister, Keith W.; Strader, Jay +20 more
We present radio observations (1-40 GHz) for 36 classical novae, representing data from over five decades compiled from the literature, telescope archives, and our own programs. Our targets display a striking diversity in their optical parameters (e.g., spanning optical fading timescales, t 2 = 1-263 days), and we find a similar diversi…
The Spitzer/IRAC Legacy over the GOODS Fields: Full-depth 3.6, 4.5, 5.8, and 8.0 µm Mosaics and Photometry for >9000 Galaxies at z 3.5-10 from the GOODS Reionization Era Wide-area Treasury from Spitzer (GREATS)
Franx, Marijn; Illingworth, Garth D.; Labbé, Ivo +9 more
We present the deepest Spitzer/InfraRed Array Camera (IRAC) 3.6, 4.5, 5.8, and 8.0 µm wide-area mosaics yet over the Great Observatories Origins Deep Survey (GOODS)-N and GOODS-S fields as part of the GOODS Reionization Era wide-Area Treasury from Spitzer (GREATS) project. We reduced and mosaicked in a self-consistent way observations taken …
The Ultraviolet Extinction Map and Dust Properties at High Galactic Latitude
Jiang, Biwei; Yuan, Haibo; Li, Jun +1 more
Extinction in ultraviolet is much more significant than in optical or infrared, which can be very informative to precisely measure the extinction and understand the dust properties in the low-extinction areas. The high Galactic latitude sky is such an area, important for studying the extragalactic sky and the universe. Based on the stellar paramet…
Variations of the Galactic Cosmic Rays in the Recent Solar Cycles
Zhao, Lingling; Fu, Shuai; Zhang, Xiaoping +1 more
In this paper, we study the Galactic cosmic-ray (GCR) variations over the solar cycles 23 and 24, with measurements from NASA's Advanced Composition Explorer/Cosmic Ray Isotope Spectrometer instrument and the ground-based neutron monitors (NMs). The results show that the maximum GCR intensities of heavy nuclei (5 ≤ Z ≤ 28, 50∼500 MeV nuc-1
SuperBoRG: Search for the Brightest of Reionizing Galaxies and Quasars in HST Parallel Imaging Data
Morishita, T.
The Hubble Space Telescope (HST) has been providing tremendous survey efficiency via its pure-parallel mode by observing another field in parallel with the primary instrument in operation for the primary observation. In this study, we present a new archival project, SuperBoRG, which aims at compiling data taken in extragalactic parallel programs o…
SMARPs and SHARPs: Two Solar Cycles of Active Region Data
Sun, Xudong; Bobra, Monica G.; Wright, Paul J. +1 more
We present a new data product, called Space-Weather MDI Active Region Patches (SMARPs), derived from maps of the solar surface magnetic field taken by the Michelson Doppler Imager on board the Solar and Heliospheric Observatory. Together with the Space-Weather HMI Active Region Patches (SHARPs), derived from similar maps taken by the Helioseismic …
One of Everything: The Breakthrough Listen Exotica Catalog
DeBoer, David; Gajjar, Vishal; Siemion, Andrew P. V. +12 more
We present Breakthrough Listen's Exotica Catalog as the centerpiece of our efforts to expand the diversity of targets surveyed in the Search for Extraterrestrial Intelligence (SETI). As motivation, we introduce the concept of survey breadth, the diversity of objects observed during a program. Several reasons for pursuing a broad program are given,…
The Old Moving Groups in the Field of Taurus
Fang, Min; Tian, Hao; Yang, Chengqun +3 more
In this work, we present a systematic search for stellar groups in the Taurus field by applying the DBSCAN algorithm to the data from Gaia DR2. We find 22 groups, consisting of 8 young groups (Groups 1-8) at ages of 2-4 Myr and distances of ∼130-170 pc, and 14 old groups (Groups 9-22) at ages of 8-49 Myr and distances of ∼110-210 pc. We characteri…