output
19922026
most citedThe Seventh Data Release of the Sloan Digital Sky Survey

5.4k citations

Showing 2021 · astro-ph.EPShow all

42 papers · 2 filters

astro-ph.EP2021★ 18 cited

TOI-1842b: A Transiting Warm Saturn Undergoing Re-Inflation around an Evolving Subgiant

Robert A. Wittenmyer, Jake T. Clark, Trifon Trifonov +41

The imminent launch of space telescopes designed to probe the atmospheres of exoplanets has prompted new efforts to prioritise the thousands of transiting planet candidates for fol…

astro-ph.EP2021★ 49 cited

TOI-2109b: An Ultrahot Gas Giant on a 16 hr Orbit

Ian Wong, Avi Shporer, George Zhou +56

We report the discovery of an ultrahot Jupiter with an extremely short orbital period of days (16 hr). The plane…

astro-ph.EP2021★ 26 cited

The HD 137496 system: A dense, hot super-Mercury and a cold Jupiter

T. Azevedo Silva, O. D. S. Demangeon, S. C. C. Barros +28

Most of the currently known planets are small worlds with radii between that of the Earth and that of Neptune. The characterization of planets in this regime shows a large diversit…

astro-ph.EP2021★ 14 cited

Thermal Phase Curves of XO-3b: an Eccentric Hot Jupiter at the Deuterium Burning Limit

Lisa Dang, Taylor J. Bell, Nicolas B. Cowan +15

We report \textit{Spitzer} full-orbit phase observations of the eccentric hot Jupiter XO-3b at 3.6 and 4.5 m. Our new eclipse depth measurements of ppm at 3.6 …

astro-ph.EP2021★ 19 cited

The Influence of 10 Unique Chemical Elements in Shaping the Distribution of Kepler Planets

Robert F. Wilson, Caleb I. Cañas, Steven R. Majewski +15

The chemical abundances of planet-hosting stars offer a glimpse into the composition of planet-forming environments. To further understand this connection, we make the first ever m…

astro-ph.EP2021★ 26 cited

TOI-2257 b: A highly eccentric long-period sub-Neptune transiting a nearby M dwarf

N. Schanche, F. J. Pozuelos, M. N. Günther +61

Thanks to the relative ease of finding and characterizing small planets around M dwarf stars, these objects have become cornerstones in the field of exoplanet studies. The current…

astro-ph.EP2021★ 46 cited

TOI-2076 and TOI-1807: Two young, comoving planetary systems within 50 pc identified by TESS that are ideal candidates for further follow-up

Christina Hedges, Alex Hughes, Steven Giacalone +42

We report the discovery of two planetary systems around comoving stars; TOI-2076 (TIC 27491137) and TOI-1807 (TIC 180695581). TOI-2076 is a nearby (41.9 pc) multi-planetary system…

astro-ph.EP2021★ 17 cited

HD207897 b: A dense sub-Neptune transiting a nearby and bright K-type star

N. Heidari, I. Boisse, J. Orell-Mique +90

We present the discovery and characterization of a transiting sub-Neptune orbiting with a 16.20 day period around a nearby (28 pc) and bright(V=8.37) K0V star HD207897 (TOI-1611).…

astro-ph.EP2021★ 41 cited

TOI-530b: A giant planet transiting an M dwarf detected by TESS

Tianjun Gan, Zitao Lin, Sharon Xuesong Wang +44

We report the discovery of TOI-530b, a transiting giant planet around an M0.5V dwarf, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located at a d…

astro-ph.EP2021★ 17 cited

The LHS 1678 System: Two Earth-Sized Transiting Planets and an Astrometric Companion Orbiting an M Dwarf Near the Convective Boundary at 20 pc

Michele L. Silverstein, Joshua E. Schlieder, Thomas Barclay +48

We present the TESS discovery of the LHS 1678 (TOI-696) exoplanet system, comprised of two approximately Earth-sized transiting planets and a likely astrometric brown dwarf orbitin…

astro-ph.EP2021★ 17 cited

TOI-2285b: A 1.7 Earth-radius Planet Near the Habitable Zone around a Nearby M Dwarf

Akihiko Fukui, Tadahiro Kimura, Teruyuki Hirano +60

We report the discovery of TOI-2285b, a sub-Neptune-sized planet transiting a nearby (42 pc) M dwarf with a period of 27.3 days. We identified the transit signal from the Transitin…

astro-ph.EP2021★ 17 cited

TKS V. Twin sub-Neptunes Transiting the Nearby G Star HD 63935

Nicholas Scarsdale, Joseph M. Akana Murphy, Natalie M. Batalha +56

We present the discovery of two nearly identically-sized sub-Neptune transiting planets orbiting HD 63935, a bright ( mag), sun-like () star at 49 pc. TESS id…

astro-ph.EP2021★ 11 cited

TOI-1296b and TOI-1298b observed with TESS and SOPHIE: Two hot Saturn-mass exoplanets with different densities around metal-rich stars

C. Moutou, J. M. Almenara, G. Hébrard +40

We present the discovery of two new transiting extrasolar planet candidates identified as TOI-1296.01 and TOI-1298.01 by the Transiting Exoplanet Survey Satellite (TESS). The plane…

astro-ph.EP2021★ 63 cited

Flares, Rotation, and Planets of the AU Mic System from TESS Observations

Emily A. Gilbert, Thomas Barclay, Elisa V. Quintana +20

AU Mic is a young (24 Myr), pre-Main Sequence M~dwarf star that was observed in the first month of science observations of the Transiting Exoplanet Survey Satellite (TESS) an…

astro-ph.EP2021

TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in its Atmosphere

Samuel H. C. Cabot, Aaron Bello-Arufe, João M. Mendonça +36

We present the discovery of TOI-1518b -- an ultra-hot Jupiter orbiting a bright star . The transiting planet is confirmed using high-resolution optical transmission spect…

astro-ph.EP2021★ 45 cited

TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet

Ares Osborn, David J. Armstrong, Bryson Cale +125

We present the bright (V), multi-planet system TOI-431, characterised with photometry and radial velocities. We estimate the stellar rotation period to be $30.5 \pm…

astro-ph.EP2021

A large sub-Neptune transiting the thick-disk M4V TOI-2406

R. D. Wells, B. V. Rackham, N. Schanche +71

Large sub-Neptunes are uncommon around the coolest stars in the Galaxy and are rarer still around those that are metal-poor. However, owing to the large planet-to-star radius ratio…

astro-ph.EP2021★ 8 cited

HD 183579b: A Warm Sub-Neptune Transiting a Solar Twin Detected by TESS

Tianjun Gan, Megan Bedell, Sharon Xuesong Wang +48

We report the discovery and characterization of a transiting warm sub-Neptune planet around the nearby bright ( mag, mag) solar twin HD 183579, delivered by the Tr…

astro-ph.EP2021

Asteroseismology of iota Draconis and Discovery of an Additional Long-Period Companion

Michelle L. Hill, Stephen R. Kane, Tiago L. Campante +25

Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted transit depths. However, t…

astro-ph.EP2021

Detailed Abundances of Planet-Hosting Open Clusters. The Praesepe (Beehive) Cluster

George Vejar, Simon C. Schuler, Keivan G. Stassun

It is not yet fully understood how planet formation affects the properties of host stars, in or out of a cluster; however, abundance trends can help us understand these processes.…

astro-ph.EP2021★ 50 cited

A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds

J. G. Winters, R. Cloutier, A. A. Medina +79

LTT 1445 is a hierarchical triple M-dwarf star system located at a distance of 6.86 parsecs. The primary star LTT 1445A (0.257 M_Sun) is known to host the transiting planet LTT 144…

astro-ph.EP2021★ 10 cited

TOI-1749: an M dwarf with a Trio of Planets including a Near-Resonant Pair

A. Fukui, J. Korth, J. H. Livingston +65

We report the discovery of one super-Earth- (TOI-1749b) and two sub-Neptune-sized planets (TOI-1749c and TOI-1749d) transiting an early M dwarf at a distance of 100~pc, which were…

astro-ph.EP2021★ 11 cited

Planet Hunters TESS III: two transiting planets around the bright G dwarf HD 152843

Nora L. Eisner, Belinda A. Nicholson, Oscar Barragán +37

We report on the discovery and validation of a two-planet system around a bright (V = 8.85 mag) early G dwarf (1.43 , 1.15 , TOI 2319) using data from NASA's…

astro-ph.EP2021★ 29 cited

TOI-1231 b: A Temperate, Neptune-Sized Planet Transiting the Nearby M3 Dwarf NLTT 24399

Jennifer A. Burt, Diana Dragomir, Paul Mollière +59

We report the discovery of a transiting, temperate, Neptune-sized exoplanet orbiting the nearby ( = 27.5 pc), M3V star TOI-1231 (NLTT 24399, L 248-27, 2MASS J10265947-5228099).…