Science Archives Publication System

Rationale for BepiColombo Studies of Mercury's Surface and Composition

DOI: 10.1007/s11214-020-00694-7 Bibcode: 2020SSRv..216...66R

Muinonen, Karri; Wurz, Peter; Massironi, Matteo +63 more

BepiColombo has a larger and in many ways more capable suite of instruments relevant for determination of the topographic, physical, chemical and mineralogical properties of Mercury's surface than the suite carried by NASA's MESSENGER spacecraft. Moreover, BepiColombo's data rate is substantially higher. This equips it to confirm, elaborate upon, …

2020 • Space Science Reviews

BepiColombo 60

Systematic Phase Curve Study of Known Transiting Systems from Year One of the TESS Mission

DOI: 10.3847/1538-3881/ababad Bibcode: 2020AJ....160..155W

Latham, David W.; Kane, Stephen R.; Fetherolf, Tara +14 more

We present a systematic phase curve analysis of known transiting systems observed by the Transiting Exoplanet Survey Satellite (TESS) during year one of the primary mission. Using theoretical predictions for the amplitude of the planetary longitudinal atmospheric brightness modulation, stellar ellipsoidal distortion and Doppler boosting, as well a…

2020 • The Astronomical Journal

Hipparcos 60

A Flare-type IV Burst Event from Proxima Centauri and Implications for Space Weather

DOI: 10.3847/1538-4357/abca90 Bibcode: 2020ApJ...905...23Z

Kaplan, David L.; Cairns, Iver H.; Lenc, Emil +10 more

Studies of solar radio bursts play an important role in understanding the dynamics and acceleration processes behind solar space weather events, and the influence of solar magnetic activity on solar system planets. Similar low-frequency bursts detected from active M-dwarfs are expected to probe their space weather environments and therefore the ha…

2020 • The Astrophysical Journal

Gaia 60

The Next Generation Virgo Cluster Survey (NGVS). XIV. The Discovery of Low-mass Galaxies and a New Galaxy Catalog in the Core of the Virgo Cluster

DOI: 10.3847/1538-4357/ab339f Bibcode: 2020ApJ...890..128F

Jordán, Andrés; Zhang, Hongxin; Emsellem, Eric +28 more

The Next Generation Virgo Cluster Survey (NGVS) was designed to provide a deep census of baryonic structures in the Virgo cluster. The survey covers the 104 deg² area from the core of Virgo out to one virial radius, in the u*griz bandpasses, to a point-source depth of g ∼ 25.9 mag (10σ) and a single pixel surface brightness limit of &mi…

2020 • The Astrophysical Journal

eHST 60

The Habitable Zone Planet Finder Reveals a High Mass and Low Obliquity for the Young Neptune K2-25b

DOI: 10.3847/1538-3881/abb13a Bibcode: 2020AJ....160..192S

Mahadevan, Suvrath; Terrien, Ryan; Wisniewski, John +27 more

Using radial velocity data from the Habitable Zone Planet Finder, we have measured the mass of the Neptune-sized planet K2-25b, as well as the obliquity of its M4.5 dwarf host star in the 600-800 Myr Hyades cluster. This is one of the youngest planetary systems for which both of these quantities have been measured and one of the very few M dwarfs …

2020 • The Astronomical Journal

Gaia 60

Large-scale Structures in the CANDELS Fields: The Role of the Environment in Star Formation Activity

DOI: 10.3847/1538-4357/ab61fd Bibcode: 2020ApJ...890....7C

Papovich, Casey; Ferguson, Henry C.; Giavalisco, Mauro +14 more

We present a robust method, weighted von Mises kernel density estimation, along with boundary correction to reconstruct the underlying number density field of galaxies. We apply this method to galaxies brighter than Hubble Space Telescope $/{\rm{F}}160{\rm{w}}\leqslant 26$ AB mag in the redshift range 0.4 ≤ z ≤ 5 in the five CANDELS fields (GOODS-…

2020 • The Astrophysical Journal

eHST 60

Temperatures and Metallicities of M Dwarfs in the APOGEE Survey

DOI: 10.3847/1538-4357/ab7004 Bibcode: 2020ApJ...892...31B

Hogg, David W.; Mann, Andrew W.; Burgasser, Adam +1 more

M dwarfs have enormous potential for our understanding of structure and formation on both Galactic and exoplanetary scales through their properties and compositions. However, current atmosphere models have limited ability to reproduce spectral features in stars at the coolest temperatures (T_eff < 4200 K) and to fully exploit the info…

2020 • The Astrophysical Journal

Gaia 60

Carbon star formation as seen through the non-monotonic initial-final mass relation

DOI: 10.1038/s41550-020-1132-1 Bibcode: 2020NatAs...4.1102M

Ramirez-Ruiz, Enrico; Girardi, Léo; Cheng, Sihao +13 more

The initial-final mass relation (IFMR) links the birth mass of a star to the mass of the compact remnant left at its death. While the relevance of the IFMR across astrophysics is universally acknowledged, not all of its fine details have yet been resolved. A new analysis of a few carbon-oxygen white dwarfs in old open clusters of the Milky Way led…

2020 • Nature Astronomy

Gaia 60

Infrared detection of aliphatic organics on a cometary nucleus

DOI: 10.1038/s41550-019-0992-8 Bibcode: 2020NatAs...4..500R

Bellucci, G.; Carlson, R. W.; Fornasier, S. +28 more

The European Space Agency's Rosetta mission¹ has acquired unprecedented measurements of the surface of the nucleus of comet 67P/Churyumov-Gerasimenko (hereafter, 67P), the composition of which, as determined by in situ and remote-sensing instruments, including the VIRTIS instrument², seems to be an assemblage of ices, mineral…

2020 • Nature Astronomy

Rosetta 60

Hints on the origins of particle traps in protoplanetary disks given by the M_dust - M_⋆ relation

DOI: 10.1051/0004-6361/201937003 Bibcode: 2020A&A...635A.105P

Pascucci, Ilaria; Pinilla, Paola; Marino, Sebastian

Context. Demographic surveys of protoplanetary disks, carried out mainly with the Atacama Large Millimeter/submillimete Array, have provided access to a large range of disk dust masses (M_dust) around stars with different stellar types and in different star-forming regions. These surveys found a power-law relation between M_dust

2020 • Astronomy and Astrophysics

Gaia 59