Target Selection for SETI. I. A Catalog of Nearby Habitable Stellar Systems

  title={Target Selection for SETI. I. A Catalog of Nearby Habitable Stellar Systems},
  author={Margaret C. Turnbull and Jill Tarter},
  journal={The Astrophysical Journal Supplement Series},
  pages={181 - 198}
In preparation for the advent of the Allen Telescope Array, the SETI Institute has the need to greatly expand its former list of ∼2000 targets compiled for Project Phoenix, a search for extraterrestrial technological signals. In this paper we present a catalog of stellar systems that are potentially habitable to complex life forms (including intelligent life), which comprises the largest portion of the new SETI target list. The Catalog of Nearby Habitable Systems (HabCat) was created from the… 

The Log Log Prior for the Frequency of Extraterrestrial Intelligences

It is unclear how frequently life and intelligence arise on planets. I consider a Bayesian prior for the probability P(ETI) that intelligence evolves at a suitable site, with weight distributed


Locating planets in circumstellar habitable zones (HZs) is a priority for many exoplanet surveys. Space-based and ground-based surveys alike require robust toolsets to aid in target selection and

Transmitting signals over interstellar distances: three approaches compared in the context of the Drake equation

  • L. Arnold
  • Physics
    International Journal of Astrobiology
  • 2013
Abstract I compare three methods for transmitting signals over interstellar distances: radio transmitters, lasers and artificial transits. The quantitative comparison is based on physical quantities

Astrobiologically interesting stars within 10 parsecs of the sun.

It is shown that approximately 7% of the nearby stars are optimally interesting targets for exobiology, after eliminating multiple stars, young, chromospherically active, hard x-ray- emitting stars, and low metallicity objects.

The utilization of pulsars as SETI beacons

This paper proposes that pulsars can serve as beacons for the discovery of and communication with extraterrestrials. The motivation for the communication strategy proposed is discussed in detail,

Evaluating the Plausible Range of N2O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach

Nitrous oxide (N2O)—a product of microbial nitrogen metabolism—is a compelling exoplanet biosignature gas with distinctive spectral features in the near- and mid-infrared, and only minor abiotic

On possible life-dispersal patterns beyond the Earth

The assumption that exoplanets are ‘in equilibrium’ with their surroundings has not given way to life's transmissivity on large spatial scales. The spread of human diseases and the life recovery

Starshade Imaging Simulation Toolkit for Exoplanet Reconnaissance

This work describes SISTER’s algorithms, its operational modules, and how it can be used to generate starshade optical simulations with a high degree of fidelity and includes some imaging examples.

One of Everything: The Breakthrough Listen Exotica Catalog

We present Breakthrough Listen’s Exotica Catalog as the centerpiece of our efforts to expand the diversity of targets surveyed in the Search for Extraterrestrial Intelligence (SETI). As motivation,



The Optical Mass-Luminosity Relation at the End of the Main Sequence (0.08-0.20 M☉)

The empirical mass-luminosity relation at M is presented for stars with masses 0.08-0.20 M☉ based upon new observations made with Fine Guidance Sensor 3 on the Hubble Space Telescope. The targets are

On the Nature of Stars with Planets

We consider the metallicities and kinematics of nearby stars known to have planetary‐mass companions in the general context of the overall properties of the local Galactic disk. We have used

Habitable zones about main sequence stars

The evolution of angular momentum among zero-age main-sequence solar-type stars

We consider a survey of rotation among F, G, and K dwarfs of the Pleiades in the context of other young clusters (Alpha Persei and the Hyades) and pre-main-sequence (PMS) stars (in Taurus-Auriga and

Exobiological habitats: An overview

Exobiological habitats, defined here as a long-term (−109 yrs) liquid water environment with available biogenic materials, can be examined from both a stellar and a planetary perspective. From the

Evidence for long-term brightness changes of solar-type stars

CHANGES in the brightness of the Sun may introduce further uncertainties into forecasts of global warming by the greenhouse effect. The Sun is known to vary in brightness, on a timescale of years, by

Microfossils of the Early Archean Apex Chert: New Evidence of the Antiquity of Life

It is established that trichomic cyanobacterium-like microorganisms were extant and morphologically diverse at least as early as ∼3465 million years ago and suggests that oxygen-producing photoautotrophy may have already evolved by this early stage in biotic history.

Circumstellar Habitable Zones: Proc. First International Conference

  • Circumstellar Habitable Zones: Proc. First International Conference
  • 1996