Articles by Kaloyan Penev

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Kaloyan Penev

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Main-sequence exoplanet systems: tidal evolution

12 March 2024 by Kaloyan Penev

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Constraints on Tidal Quality Factor in Kepler Eclipsing Binaries using Tidal Synchronization: A Frequency-Dependent Approach

24 July 2023 by Ruskin Patel and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

Constraining Tidal Quality Factor using Spin Period in Eclipsing Binaries

14 March 2022 by Ruskin Patel and Kaloyan Penev

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

HATS-74Ab, HATS-75b, HATS-76b and HATS-77b: Four Transiting Giant Planets around K and M Dwarfs

3 December 2021 by Abelardo Jordán and others

Earth and Planetary Astrophysics

On a Possible Solution to the Tidal Realignment Problem for Hot Jupiters

15 April 2021 by Kassandra Anderson and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

TOI-954 b and K2-329 b: Short-Period Saturn-Mass Planets that Test whether Irradiation Leads to Inflation

4 January 2021 by Lizhou Sha and others

Earth and Planetary Astrophysics

HAT-P-68b: A Transiting Hot Jupiter Around a K5 Dwarf Star

30 October 2020 by Bethlee Lindor and others

Earth and Planetary Astrophysics

HATS-37Ab and HATS-38b: Two Transiting Hot Neptunes in the Desert

14 July 2020 by Abelardo Jordán and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

HAT-P-58b -- HAT-P-64b: Seven Planets Transiting Bright Stars

10 July 2020 by G. Bakos and others

Earth and Planetary Astrophysics, Instrumentation and Methods for Astrophysics

HATS-47b, HATS-48Ab, HATS-49b and HATS-72b: Four Warm Giant Planets Transiting K Dwarfs

13 February 2020 by J. Hartman and others at

Princeton University

Earth and Planetary Astrophysics

The highly inflated giant planet WASP-174b

18 September 2019 by Leonardo Mancini and others

Earth and Planetary Astrophysics

KELT-24b: A 5M_{\rm J} Planet on a 5.6 day Well-Aligned Orbit around the Young V=8.3 F-star HD 93148

3 September 2019 by Joseph Rodriguez and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

Two new HATNet hot Jupiters around A stars, and the first glimpse at the occurrence rate of hot Jupiters from TESS

29 July 2019 by Guanhao Zhou and others

Earth and Planetary Astrophysics

KELT-23Ab: A Hot Jupiter Transiting a Near-Solar Twin Close to the TESS and JWST Continuous Viewing Zones

28 May 2019 by Daniel Johns and others

Earth and Planetary Astrophysics

An Eccentric Massive Jupiter Orbiting a Sub-Giant on a 9.5 Day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images

18 March 2019 by Joseph Rodriguez and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

HATS-71b: A giant planet transiting an M3 dwarf star in TESS Sector 1

21 December 2018 by G. Bakos and others

Earth and Planetary Astrophysics

HATS-54b-HATS-58Ab: five new transiting hot Jupiters including one with a possible temperate companion

18 December 2018 by Néstor Espinoza and others

Earth and Planetary Astrophysics

HATS-60b - HATS-69b: Ten Transiting Planets From HATSouth

13 December 2018 by J. Hartman and others at

Princeton University

Earth and Planetary Astrophysics

HATS-70b: A 13 Mjup brown dwarf transiting an A star

16 November 2018 by Guanhao Zhou and others

Earth and Planetary Astrophysics

HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet Around a Sun-Like Star

15 May 2018 by P. Sarkis and others

Earth and Planetary Astrophysics

HATS-39b, HATS-40b, HATS-41b, and HATS-42b: Three Inflated Hot Jupiters and a Super-Jupiter Transiting F Stars

4 April 2018 by João Bento and others

Earth and Planetary Astrophysics

Two warm, low-density sub-Jovian planets orbiting bright stars in K2 campaigns 13 and 14

9 March 2018 by Liang Yu and others

Earth and Planetary Astrophysics

Empirical Tidal Dissipation in Exoplanet Hosts From Tidal Spin-Up

26 February 2018 by Kaloyan Penev and others

Solar and Stellar Astrophysics, Earth and Planetary Astrophysics

KELT-21b: A Hot Jupiter Transiting the Rapidly-Rotating Metal-Poor Late-A Primary of a Likely Hierarchical Triple System

17 January 2018 by Marshall Johnson and others

Earth and Planetary Astrophysics, Astrophysics of Galaxies

HAT-TR-318-007: a double-lined M-dwarf binary with total secondary eclipses discovered by HATNet and observed by K2

10 January 2018 by J. Hartman and others at

Princeton University

Solar and Stellar Astrophysics

KELT-19Ab: A P~4.6 Day Hot Jupiter Transiting a Likely Am Star with a Distant Stellar Companion

22 December 2017 by Robert Siverd and others

Earth and Planetary Astrophysics

HATS-50b through HATS-53b: four transiting hot Jupiters orbiting G-type stars discovered by the HATSouth survey

12 December 2017 by Th. Henning and others

Earth and Planetary Astrophysics

HATS-43b, HATS-44b, HATS-45b, and HATS-46b: Four Short Period Transiting Giant Planets in the Neptune-Jupiter Mass Range

22 July 2017 by Rafael Brahm and others

Earth and Planetary Astrophysics, Solar and Stellar Astrophysics

KELT-20b: A giant planet with a period of P~ 3.5 days transiting the V~ 7.6 early A star HD 185603

5 July 2017 by Michael Lund and others

Earth and Planetary Astrophysics

HATS-36b and 24 other transiting/eclipsing systems from the HATSouth - K2 Campaign 7 program

12 June 2017 by Dan Bayliss and others

Earth and Planetary Astrophysics

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Earth and Planetary Astrophysics Solar and Stellar Astrophysics Instrumentation and Methods for Astrophysics Geophysics Astrophysics of Galaxies