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19922026
most citedThe Sloan Digital Sky Survey: Technical Summary

10.4k citations

Showing 2019 · astro-ph.EPShow all

47 papers · 2 filters

astro-ph.EP2019★ 36 cited

A record of the final phase of giant planet migration fossilized in the asteroid belt's orbital structure

Matthew S. Clement, Alessandro Morbidelli, Sean N. Raymond +1

The asteroid belt is characterized by an extreme low total mass of material on dynamically excited orbits. The Nice Model explains many peculiar qualities of the solar system, incl…

astro-ph.EP2019★ 144 cited

Cool Jupiters greatly outnumber their toasty siblings: Occurrence rates from the Anglo-Australian Planet Search

Robert A. Wittenmyer, Songhu Wang, Jonathan Horner +8

Our understanding of planetary systems different to our own has grown dramatically in the past 30 years. However, our efforts to ascertain the degree to which the Solar system is a…

astro-ph.EP2019★ 38 cited

KELT-25b and KELT-26b: A Hot Jupiter and a Substellar Companion Transiting Young A-stars Observed by TESS

Romy Rodríguez Martínez, B. Scott Gaudi, Joseph E. Rodriguez +89

We present the discoveries of KELT-25b (TIC 65412605, TOI-626.01) and KELT-26b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A-stars. Th…

astro-ph.EP2019★ 49 cited

A well aligned orbit for the 45 Myr old transiting Neptune DS Tuc Ab

G. Zhou, J. N. Winn, E. R. Newton +18

DS Tuc Ab is a Neptune-sized planet that orbits around a member of the 45 Myr old Tucana-Horologium moving group. Here, we report the measurement of the sky-projected angle between…

astro-ph.EP2019★ 53 cited

Do Metal-Rich Stars Make Metal-Rich Planets? New Insights on Giant Planet Formation from Host Star Abundances

Johanna K. Teske, Daniel Thorngren, Jonathan J. Fortney +2

The relationship between the compositions of giant planets and their host stars is of fundamental interest in understanding planet formation. The solar system giant planets are enh…

astro-ph.EP2019★ 32 cited

The Pan-Pacific Planet Search. VIII. Complete results and the occurrence rate of planets around low-luminosity giants

Robert A. Wittenmyer, R. P. Butler, Jonathan Horner +6

Our knowledge of the populations and occurrence rates of planets orbiting evolved intermediate-mass stars lags behind that for solar-type stars by at least a decade. Some radial ve…

astro-ph.EP2019★ 30 cited

ACCESS: A Visual to Near-infrared Spectrum of the Hot Jupiter WASP-43b with Evidence of , but no evidence of Na or K

Ian C. Weaver, Mercedes López-Morales, Néstor Espinoza +11

We present a new ground-based visual transmission spectrum of the hot Jupiter WASP-43b, obtained as part of the ACCESS Survey. The spectrum was derived from four transits observed…

astro-ph.EP2019★ 56 cited

Exploring Whether Super-Puffs Can Be Explained as Ringed Exoplanets

Anthony L. Piro, Shreyas Vissapragada

An intriguing, growing class of planets are the "super-puffs," objects with exceptionally large radii for their masses and thus correspondingly low densities ($\lesssim0.3\rm\,g\,c…

astro-ph.EP2019★ 9 cited

Observational Investigation of the 2013 Near-Earth Encounter by Asteroid (367943) Duende

Nicholas Moskovitz, Conor Benson, Daniel Scheeres +20

On 15 February 2013, the asteroid 367943 Duende (2012 DA14) experienced a near-Earth encounter at an altitude of 27,700 km or 4.2 Earth radii. We present here the results of an ext…

astro-ph.EP2019★ 84 cited

VLT/SPHERE exploration of the young multiplanetary system PDS70

D. Mesa, M. Keppler, F. Cantalloube +51

Context. PDS 70 is a young (5.4 Myr), nearby (~113 pc) star hosting a known transition disk with a large gap. Recent observations with SPHERE and NACO in the near-infrared (NIR) al…

astro-ph.EP2019★ 212 cited

Meridional flows in the disk around a young star

Richard Teague, Jaehan Bae, Edwin Bergin

Protoplanetary disks are known to posses a stunning variety of substructure in the distribution of their mm~sized grains, predominantly seen as rings and gaps (Andrews et al. 2018)…

astro-ph.EP2019★ 75 cited

Detection of the nearest Jupiter analog in radial velocity and astrometry data

Fabo Feng, Guillem Anglada-Escudé, Mikko Tuomi +4

The presence of Jupiter is crucial to the architecture of the Solar System and models underline this to be a generic feature of planetary systems. We find the detection of the diff…

astro-ph.EP2019★ 67 cited

Spiral Structure in the Gas Disk of TW Hya

Richard Teague, Jaehan Bae, Jane Huang +1

We report the detection of spiral substructure in both the gas velocity and temperature structure of the disk around TW~Hya, suggestive of planet-disk interactions with an unseen p…

astro-ph.EP2019★ 21 cited

Near-Infrared Imaging of a Spiral in the CQ Tau Disk

Taichi Uyama, Takayuki Muto, Dimitri Mawet +28

We present -band Keck/NIRC2 imaging and -band Subaru/AO188+HiCIAO polarimetric observations of CQ Tau disk with a new spiral arm. Apart from the spiral feature our obs…

astro-ph.EP2019★ 103 cited

An Ideal Testbed for Planet-disk Interaction: Two Giant Protoplanets in Resonance Shaping the PDS 70 Protoplanetary Disk

Jaehan Bae, Zhaohuan Zhu, Clément Baruteau +7

While numerical simulations have been playing a key role in the studies of planet-disk interaction, testing numerical results against observations has been limited so far. With the…

astro-ph.EP2019★ 22 cited

Presolar Grains in Primitive Ungrouped Carbonaceous Chondrite Northwest Africa 5958

Larry R. Nittler, Rhonda M. Stroud, Conel M. O'D. Alexander +1

We report a correlated NanoSIMS-transmission electron microscopy study of the ungrouped carbonaceous chondrite Northwest Africa (NWA) 5958. We identified 10 presolar SiC grains, 2…

astro-ph.EP2019★ 65 cited

Magnetospheric Accretion as a Source of H Emission from Proto-planets around PDS 70

Thanawuth Thanathibodee, Nuria Calvet, Jaehan Bae +2

Advances in high-resolution imaging have revealed H emission separated from the host star. It is generally believed that the emission is associated with forming planets in proto…

astro-ph.EP2019★ 119 cited

Near-equilibrium isotope fractionation during planetesimal evaporation

E. D. Young, A. Shahar, F. Nimmo +4

Silicon and Mg in differentiated rocky bodies exhibit heavy isotope enrichments that have been attributed to evaporation of partially or entirely molten planetesimals. We evaluate…

astro-ph.EP2019★ 9 cited

The Effect of the Approach to Gas Disk Gravitational Instability on the Rapid Formation of Gas Giant Planets

Alan P. Boss

Observational evidence suggests that gas disk instability may be responsible for the formation of at least some gas giant exoplanets, particularly massive or distant gas giants. Wi…

astro-ph.EP2019★ 19 cited

Properties of Density and Velocity Gaps Induced by a Planet in a Protoplanetary Disk

Han Gyeol Yun, Woong-Tae Kim, Jaehan Bae +1

Gravitational interactions between a protoplanetary disk and its embedded planet is one of the formation mechanisms of gaps and rings found in recent ALMA observations. To quantify…

astro-ph.EP2019★ 5 cited

Measuring the Orbital Parameters of Radial Velocity Systems in Mean Motion Resonance---a Case Study of HD 200964

M. M. Rosenthal, W. Jacobson-Galan, B. Nelson +8

The presence of mean motion resonances (MMRs) complicates analysis and fitting of planetary systems observed through the radial velocity (RV) technique. MMR can allow planets to re…

astro-ph.EP2019★ 60 cited

The gravity field and interior structure of Dione

Marco Zannoni, Doug Hemingway, Luis Gomez Casajus +1

During its mission in the Saturn system, Cassini performed five close flybys of Dione. During three of them, radio tracking data were collected during the closest approach, allowin…

astro-ph.EP2019★ 98 cited

Three Red Suns in the Sky: A Transiting, Terrestrial Planet in a Triple M Dwarf System at 6.9 Parsecs

Jennifer G. Winters, Amber A. Medina, Jonathan M. Irwin +40

We present the discovery from TESS data of LTT 1445Ab. At a distance of 6.9 parsecs, it is the second nearest transiting exoplanet system found to date, and the closest one known f…

astro-ph.EP2019★ 28 cited

TOI-150b and TOI-163b: two transiting hot Jupiters, one eccentric and one inflated, revealed by TESS near and at the edge of the JWST CVZ

Diana Kossakowski, Néstor Espinoza, Rafael Brahm +51

We present the discovery of TYC9191-519-1b (TOI-150b, TIC 271893367) and HD271181b (TOI-163b, TIC 179317684), two hot Jupiters initially detected using 30-minute cadence Transiting…