https://www.centauri-dreams.org/?p=37527 Travel times (as hour angles) versus stellar distance to the solar system (along the radial coordinate) for stars in the solar neighborhood. Symbols refer to numerical trajectory simulations to individual targets, lines refer to the logarithmic spiral derived in Equation (4). The spirals are parameterized using M2V (red), K5V (orange), G2V (yellow), F3V (green), and A0V (blue) template stars from Pecaut & Mamajek (2013). Square symbols represent stars with known exoplanets. The black star symbol represents α Cen. Left: All 117 stars within 21 ly around the Sun. Right: 22,178 stars out to 316 ly around the Sun. Credit: Heller, Hippke & Kervella.
Sirius Afterburner