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GG Carinae: discovery of orbital-phase-dependent 1.583-day periodicities in the B[e] supergiant binary
Podsiadlowski, Philipp; Porter, Augustus; Blundell, Katherine +1 more
GG Carinae (GG Car) is a binary whose primary component is a B[e] supergiant. Using photometric data from the Transiting Exoplanet Survey Satellite (TESS), All Sky Automated Survey (ASAS), Optical Monitoring Camera (OMC), and All Sky Automated Survey for Supernovae (ASAS-SN), and spectroscopic data from the Global Jet Watch to study visible He I, …
Using Cosmic Rays Detected by HST as Geophysical Markers. I. Detection and Characterization of Cosmic Rays
Tancredi, Gonzalo; Deustua, Susana E.; Miles, Nathan D. +3 more
The Hubble Space Telescope (HST) has been operational for over 30 years, and throughout that time it has been bombarded by high-energy charged particles colloquially referred to as cosmic rays. In this paper, we present a comprehensive study of more than 1.2 billion cosmic rays observed with HST using a custom-written Python package, HSTcosmicrays…
Spatial segregation impact on star formation in nearby dwarf spheroidal galaxies
Makarova, L. N.; Makarov, D. I.
Using our Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) observations of the recently found isolated dwarf spheroidal (dSph) galaxies, we homogeneously measured their star formation histories (SFHs). We determined SF rate as a function of time, as well as age and metallicity of the stellar populations. All objects demonstrate complex…
Gamma-ray bursts as probes of high-redshift Lyman-α emitters and radiative transfer models
Salvaterra, R.; Milvang-Jensen, B.; Fynbo, J. P. U. +7 more
Aims: We present the updated census and statistics of Lyman-α emitting long gamma-ray burst host galaxies (LAE-LGRBs). We investigate the properties of a subsample of LAE-LGRBs and test the shell model that is commonly used to fit Lyman-α (Lyα) emission line spectra.
Methods: We considered all LGRB host galaxies with relevant publicly av…
Joint Analysis of Multicolor Photometry: A New Approach to Constrain the Nature of Multiple-star Systems Hosting Exoplanet Candidates
Miyakawa, Kohei; Hirano, Teruyuki; Sato, Bun'ei +2 more
We present a new method to assess the properties of transiting planet candidates by multicolor photometry. By analyzing multicolor transit/eclipse light curves and apparent magnitudes of the target in parallel, this method attempts to identify the nature of the system and provide a quantitative constraint on the properties of unresolved companion(…
In-flight verification of the engineering design data for the Energetic Particle Detector on board the ESA/NASA Solar Orbiter
Wimmer-Schweingruber, Robert F.; Elftmann, Robert; Rodríguez-Pacheco, Javier +25 more
This work presents an overview of the in-flight engineering data of the Energetic Particle Detector (EPD) instrument suite during its first year of operation. EPD is part of the in-situ scientific payload of the ESA/NASA Solar Orbiter mission which was launched in February 2020. After completion of its commissioning phase, Solar Orbiter started it…
The OTELO survey. Revealing a population of low-luminosity active star-forming galaxies at z ∼ 0.9
Barrufet, Laia; Gallego, Jesús; Sánchez-Portal, Miguel +16 more
Aims: We study a sample of Hβ emission line sources at z ∼ 0.9 to identify the star-forming galaxies sample and characterise them in terms of line luminosity, stellar mass, star formation rate, and morphology. The final aim is to obtain the Hβ luminosity function of the star-forming galaxies at this redshift.
Methods: We used the red tun…
The Atacama Cosmology Telescope: SZ-based masses and dust emission from IR-selected cluster candidates in the SHELA survey
Papovich, Casey; Finkelstein, Steven L.; Hilton, Matt +19 more
We examine the stacked thermal Sunyaev-Zel'dovich (SZ) signals for a sample of galaxy group and cluster candidates from the 24 deg2 infrared Spitzer-HETDEX Exploratory Large Area (SHELA) survey. We identify the objects in combination with optical data using the redMaPPer algorithm, and divide them into three richness bins (λ in 10-20, 2…
The Mars Orbiter for Resources, Ices, and Environments (MORIE) Science Goals and Instrument Trades in Radar, Imaging, and Spectroscopy
Murchie, Scott L.; Ehlmann, Bethany L.; Calvin, Wendy M. +9 more
The Mars Orbiter for Resources, Ices, and Environments (MORIE) was selected as one of NASA's 2019 Planetary Mission Concept Studies. The mission builds upon recent discoveries and current knowledge gaps linked to two primary scientific questions: (1) when did elements of the cryosphere form and how are ice deposits linked to current, recent, and a…
Searching for Saturn's X-rays during a rare Jupiter Magnetotail crossing using Chandra
Jackman, C. M.; Branduardi-Raymont, G.; Nichols, J. D. +6 more
Every 19 yr, Saturn passes through Jupiter's 'flapping' magnetotail. Here, we report Chandra X-ray observations of Saturn planned to coincide with this rare planetary alignment and to analyse Saturn's magnetospheric response when transitioning to this unique parameter space. We analyse three Director's Discretionary Time (DDT) observations from th…