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A detailed map of the distribution of dust at high Galactic latitudes is essential for future cosmic microwave background (CMB) polarization experiments because the dust, while diffuse, remains a significant foreground in these regions. We…

Astrophysics of Galaxies · Physics 2024-10-16 Matthew O'Callaghan , Gerry Gilmore , Kaisey S. Mandel

Habitability is a measure of an environment's potential to support life, and a habitable exoplanet supports liquid water on its surface. However, a planet's success in maintaining liquid water on its surface is the end result of a complex…

Earth and Planetary Astrophysics · Physics 2021-12-15 Ravi kumar Kopparapu , Eric T. Wolf , Victoria S. Meadows

The Kepler Mission is exploring the diversity of planets and planetary systems. Its legacy will be a catalog of discoveries sufficient for computing planet occurrence rates as a function of size, orbital period, star-type, and insolation…

Earth and Planetary Astrophysics · Physics 2014-09-08 Natalie M. Batalha

Understanding the formation and evolution of our Galaxy requires accurate distances, ages and chemistry for large populations of field stars. Here we present several updates to our spectro-photometric distance code, that can now also be…

The current census of planetary systems displays a wide range of architectures. Extending earlier work, this paper investigates the correlation between our classification framework for these architectures and host stellar properties.…

Earth and Planetary Astrophysics · Physics 2026-02-04 Alex R. Howe , Juliette C. Becker , Fred C. Adams

Eclipsing binary stars provide highly accurate measurements of the fundamental physical properties of stars. They therefore serve as stringent tests of the predictions of evolutionary models upon which most stellar age determinations are…

Solar and Stellar Astrophysics · Physics 2009-02-17 Keivan G. Stassun , Leslie Hebb , Mercedes Lopez-Morales , Andrej Prsa

We investigated the habitability of the Milky Way, making use of recent observational analysis on the prevalence of Earth-sized planets, in order to estimate where and when potentially habitable star systems may have formed over the course…

Astrophysics of Galaxies · Physics 2015-09-10 Daniel Legassick

Both rotation and interactions with binary companions can significantly affect massive star evolution, altering interior and surface abundances, mass loss rates and mechanisms, observed temperatures and luminosities, and their ultimate…

Solar and Stellar Astrophysics · Physics 2020-07-01 Trevor Z. Dorn-Wallenstein , Emily M. Levesque

We describe statistical methods for measuring the exoplanet multiplicity function - the fraction of host stars containing a given number of planets - from transit and radial-velocity surveys. The analysis is based on the approximation of…

Earth and Planetary Astrophysics · Physics 2015-05-28 Scott Tremaine , Subo Dong

Astrophysical observations reveal a large diversity of radii and masses of exoplanets. It is important to characterize the interiors of exoplanets to understand planetary diversity and further determine how unique, or not, Earth is.…

Earth and Planetary Astrophysics · Physics 2019-02-06 Caroline Dorn , Dan J. Bower , Antoine B. Rozel

The interpretation of galaxy number counts in terms of cosmological models is fraught with difficulty due to uncertainties in the overall galaxy population (mix of morphological types, luminosity functions etc.) and in the observations…

Astrophysics · Physics 2016-08-30 Simon P. Driver , Rogier A. Windhorst , Steven Phillipps , Paul D. Bristow

Life has had a dramatic impact on the composition of Earth's atmosphere over time, which suggests that statistical studies of other inhabited planets' atmospheres could reveal how they co-evolve with life. While many evolutionary pathways…

Earth and Planetary Astrophysics · Physics 2020-07-01 Alex Bixel , Dániel Apai

The age and chemical composition of the stars in present-day galaxies carry important clues about their star formation processes. The latest generation of population synthesis models have allowed to derive age and stellar metallicity…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-14 Anna Gallazzi

With thousands of exoplanets now identified, the characterization of habitable planets and the potential identification of inhabited ones is a major challenge for the coming decades. We review the current working definition of habitable…

Earth and Planetary Astrophysics · Physics 2024-01-15 S. Mazevet , A. Affholder , B. Sauterey , A. Bixel , D. Apai , R Ferriere

In systems undergoing starbursts the evolution of the young stellar population is expected to drive changes in the emission line properties. This evolution is usually studied theoretically, with a combination of evolutionary synthesis…

We present the first model that couples high-resolution simulations of the formation of Local Group galaxies with calculations of the galactic habitable zone (GHZ), a region of space which has sufficient metallicity to form terrestrial…

Astrophysics of Galaxies · Physics 2017-05-03 Duncan Forgan , Pratika Dayal , Charles Cockell , Noam Libeskind

In a multiverse setting, we expect to be situated in a universe that is exceptionally good at producing life. Though the conditions for what life needs to arise and thrive are currently unknown, many will be tested in the coming decades.…

Cosmology and Nongalactic Astrophysics · Physics 2019-08-15 McCullen Sandora

The Habitable Zone for a given star describes the range of circumstellar distances from the star within which a planet could have liquid water on its surface, which depends upon the stellar properties. Here we describe the development of…

Earth and Planetary Astrophysics · Physics 2015-06-05 Stephen R. Kane , Dawn M. Gelino

We present the Transiting Exoplanet Survey Satellite (TESS) Habitable Zone Stars Catalog, a list of 1822 nearby stars with a TESS magnitude brighter than T = 12 and reliable distances from Gaia DR2, around which the NASA's TESS mission can…

Earth and Planetary Astrophysics · Physics 2019-03-28 L. Kaltenegger , J. Pepper , K. Stassun , R. Oelkers

Over 4,000 exoplanets have been identified and thousands of candidates are to be confirmed. The relations between the characteristics of these planetary systems and the kinematics, Galactic components, and ages of their host stars have yet…

Earth and Planetary Astrophysics · Physics 2021-03-17 Di-Chang Chen , Ji-Wei Xie , Ji-Lin Zhou , Su-Bo Dong , Chao Liu , Hai-Feng Wang , Mao-Sheng Xiang , Yang Huang , Ali Luo , Zheng Zheng