TESS Archives

Left: HAT-P-33b observational and theoretical light curves using TESS sector 45 data; Right: The observational light curve of HAT-P-32b from this study in the 𝑉 filter and the theoretical light curve. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

Ephemeris Updates For Seven Selected HATNet Survey Transiting Exoplanets

by Keith CowingJune 2, 2023June 2, 2023

We refined the ephemeris of seven transiting exoplanets HAT-P-6b, HAT-P-12b, HAT-P-18b, HAT-P-22b, HAT-P-32b, HAT-P-33b, and HAT-P-52b. We observed 11 transits from eight observatories in different filters for HAT-P-6b and HAT-P-32b.

Panel (a): radius and orbital period for all TKS planets, with stellar mass shown as a color scale. Grey background points show the distribution of planets from the CKS sample (Petigura et al. 2022). The radius gap, as defined by Petigura et al. (2022), is shown as the orange shaded region. The Hot Neptune desert, as defined by Mazeh et al. (2016), is shown as the region marked off by black dashed lines. Panel (b): same as (a), except x-axis is Sinc. Panel (c): same as (a), except x-axis is M⋆ and color scale is P. Panel (d): same as (c), except x-axis is [Fe/H]. -- astro-ph.SR

Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report

The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars

by Keith CowingJune 2, 2023June 2, 2023

We present the stellar and planetary properties for 85 TESS Objects of Interest (TOIs) hosting 108 planet candidates which comprise the TESS-Keck Survey (TKS) sample.

WASP-18 b, seen in an artist concept, is a gas giant exoplanet 10 times more massive than Jupiter that orbits its star in just 23 hours. Researchers used NASA’s James Webb Space Telescope to study the planet as it moved behind its star. Temperatures there reach 5,000 degrees Fahrenheit (2,700 C). Credit: NASA/JPL-Caltech (K. Miller/IPAC)

Astrochemistry, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release

Webb Maps and Finds Traces of Water in an Ultra-hot Gas Giant’s Atmosphere

by Keith CowingMay 31, 2023May 31, 2023

There’s an intriguing exoplanet out there – 400 light-years out there – that is so tantalizing that astronomers have been studying it since its discovery in 2009. A year for […]

Black crosses: TESS lightcurve around the transits of planet b, after phasing by the planet’s period against the adopted ephemeris and the correction against gradients in the off-eclipse sections (indicated by the orange vertical dashed lines) as described in Sect. 2. Green crosses: The same curve, after a boxcar smoothing over 100 phased data points and posterior binning over 50 points. We note that the average time-increment between the binned points is 126 seconds, which is very similar to the 120 s temporal resolution of TESS lightcurves. The red curve is the transit model generated with UTM/UFIT, described in Appendix C. -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report

TOI-1416: A Ssystem With A Super-Earth Planet With A 1.07d Period

by Keith CowingMay 31, 2023May 31, 2023

TOI 1416 (BD+42 2504, HIP 70705) is a V=10 late G or early K-type dwarf star with transits detected by TESS. Radial velocities verify the presence of the transiting planet […]

Artist's view of the TOI-2096 system. Credits: Lionel J.Garc

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release

A Key Planetary System Helps To Understand Formation Mechanisms Of Super-Earths

by Keith CowingMay 26, 2023May 26, 2023

A study led by researchers of the University of Liège and the CSIC – using observations from NASA’s TESS telescope – presents the detection of a system of two planets […]

Planet radius vs. orbital period for confirmed tran- siting planets and validated planets in this paper. The CPs are indicated by the discovery source with Kepler indicated by ‘+’, K2 by a diamond ‘⋄’, and TESS by ‘*’. ExoMiner V1.2-boosted validated planets are indicated by a magenta square. For reference, Earth is indicated by a black circle. — astro-ph.EP

AI - Data - Apps - Cybernetics, Astronomy & Telescopes, Exoplanets, -moons, -comets, Press Release

Discovery of 69 New Exoplanets Using Machine Learning

by Keith CowingMay 23, 2023May 23, 2023

In a groundbreaking achievement, a team of machine learning scientists and astronomers from Universities Space Research Association (USRA), the SETI Institute, and NASA discovered 69 new exoplanets using advanced machine […]

The variable stars with known exoplanets colored by the detection method of their planets. The starred points are the locations of the unique cases KELT-9 (A), PDS 70 (B), and HD 106270 (C). -- astro-ph.EP

Astronomy & Telescopes, Exoplanets, -moons, -comets, Status Report

Variability of Known Exoplanet Host Stars Observed by TESS

by Keith CowingMay 17, 2023May 17, 2023

Both direct and indirect methods of exoplanet detection rely upon detailed knowledge of the potential host stars. Such stellar characterization allows for accurate extraction of planetary properties, as well as […]

LP 791-18 d, shown here in an artist’s concept, is an Earth-size world about 90 light-years away. The gravitational tug from a more massive planet in the system, shown as a blue disk in the background, may result in internal heating and volcanic eruptions – as much as Jupiter’s moon Io, the most geologically active body in the solar system. Astronomers discovered and studied the planet using data from NASA’s Spitzer Space Telescope and TESS (Transiting Exoplanet Survey Satellite) along with many other observatories. Credits: NASA’s Goddard Space Flight Center/Chris Smith (KRBwyle)

Astrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release

A Potentially Volcano-Covered Earth-Size World Discovered

by Keith CowingMay 17, 2023April 14, 2024

Astronomers have discovered an Earth-size exoplanet, or world beyond our solar system, that may be carpeted with volcanoes. Called LP 791-18 d, the planet could undergo volcanic outbursts as often […]

LP 791-18 d, illustrated here, is an Earth-size world about 86 light-years away. The gravitational tug from a more massive planet in the system, shown as a blue dot in the background, may result in internal heating and volcanic eruptions on this exoplanet – as much as Jupiter’s moon Io, the most geologically active body in the Solar System. CREDIT NASA’s Goddard Space Flight Center/Chris Smith (KRBwyle)

Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Press Release

LP 791-18 d: A Terrestrial Exoplanet – With Volcanoes

by Keith CowingMay 17, 2023May 17, 2023

A large international team led by astronomers at the Trottier Institute for Research on Exoplanets at Université de Montréal (UdeM) today announced in the journal Nature the discovery of a […]