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Discovery and timing of pulsar J2016+3711 in supernova remnant CTB 87 with FAST
Li, Di; Zhou, Ping; Chen, Yang +4 more
We report on our discovery of the radio pulsar, PSR J2016+3711, in supernova remnant (SNR) CTB 87, with a ~10.8σ significance of pulses, which confirms the compact nature of the X-ray point source in CTB 87. It is the first pulsar discovered in SNRs using Five-hundred-meter Aperture Spherical radio Telescope (FAST). Its integrated radio pulse prof…
Asteroid reflectance spectra from Gaia DR3: Near-UV in primitive asteroids
Tatsumi, E.; Tanga, P.; Licandro, J. +4 more
Context. In the context of charge-coupled devices (CCDs), the ultraviolet (UV) region has mostly remained unexplored after the 1990s. Gaia DR3 offers the community a unique opportunity to explore tens of thousands of asteroids in the near-UV as a proxy of the UV absorption. This absorption has been proposed in previous works as a diagnostic of hyd…
Ground- and Space-based Dust Observations of VV 191 Overlapping Galaxy Pair
Grogin, Norman A.; Holwerda, Benne W.; Koekemoer, Anton M. +12 more
The Balmer decrement (Hα/Hβ) provides a constraint on attenuation, the cumulative effects of dust grains in the ISM. The ratio is a reliable spectroscopic tool for deriving the dust properties of galaxies that determine many different quantities such as star formation rate, metallicity, and SED models. Here, we measure independently both the atten…
The Kraft Break Sharply Divides Low-mass and Intermediate-mass Stars
White, Russel J.; Beyer, Alexa C.
Main-sequence stars transition at mid-F spectral types from slowly rotating (cooler stars) to rapidly rotating (hotter stars), a transition known as the Kraft Break and attributed to the disappearance of the outer convective envelope, causing magnetic braking to become ineffective. To define this Break more precisely, we assembled spectroscopic me…
Catalogue of BRITE-Constellation targets. I. Fields 1 to 14 (November 2013-April 2016)
Smolec, R.; Handler, G.; Wade, G. A. +25 more
Context. The BRIght Target Explorer (BRITE) mission collects photometric time series in two passbands with the aim of investigating stellar structure and evolution. Since their launches in the years 2013 and 2014, the constellation of five BRITE nano-satellites has observed a total of more than 700 individual bright stars in 64 fields. Some target…
A Close Look at Lyα Emitters with JWST/NIRCam at z ≈ 3.1
Jiang, Linhua; Wuyts, Stijn; Huang, Jia-Sheng +2 more
We study 10 spectroscopically confirmed Lyα emitters (LAEs) at z ≈ 3.1 in the Ultra Deep Survey field, covered by the James Webb Space Telescope/NIRCam in the Public Release Imaging for Extragalactic Research program. All LAEs are detected in all NIRCam bands from F090W to F444W, corresponding to rest frame wavelengths of 2200 Å to 1.2 µm. B…
Radial velocities from Gaia BP/RP spectra
Kuijken, Konrad; Koposov, Sergey E.; Verberne, Sill +3 more
Aims: The Gaia mission has provided us full astrometric solutions for over 1.5B sources. However, only the brightest 34M of them have radial velocity measurements. This paper aims to close that gap by obtaining radial velocity estimates from the low-resolution BP/RP spectra that Gaia now provides. These spectra are currently published for abo…
Discovery of a Second Eclipsing, Bursting Neutron Star Low-mass X-Ray Binary in the Globular Cluster Terzan 6
Bahramian, Arash; Homan, Jeroen; Heinke, Craig O. +4 more
We have analyzed Chandra and Suzaku observations of the globular cluster Terzan 6, made when the recurrent transient GRS 1747–312 was in quiescence. Our analysis reveals the presence of a second eclipsing, bursting neutron star low-mass X-ray binary in the central regions of the cluster, in addition to GRS 1747–312. The new source, which we name T…
Double red giant branch and red clump features of Galactic disc stellar populations with Gaia GSP-Spec
Recio-Blanco, A.; de Laverny, P.; Palicio, P. A. +4 more
Context. The bimodality of the Milky Way disc, in the form of a thick short disc and a thinner more radially extended one, encrypts the complex internal evolution of our Galaxy and its interaction with the environment. Aims. To disentangle the different competing physical processes at play in Galactic evolution, a detailed chrono-chemical-kinemati…
The Interplay Between Collisionless Magnetic Reconnection and Turbulence
Hasegawa, H.; Khotyaintsev, Yu. V.; Graham, D. B. +13 more
Alongside magnetic reconnection, turbulence is another fundamental nonlinear plasma phenomenon that plays a key role in energy transport and conversion in space and astrophysical plasmas. From a numerical, theoretical, and observational point of view there is a long history of exploring the interplay between these two phenomena in space plasma env…