Matches in SemOpenAlex for { <https://semopenalex.org/work/W2922217267> ?p ?o ?g. }
- W2922217267 abstract "Giant molecular clouds (GMCs) are believed to affect the biospheres of planets as their host star passes through them. We simulate the trajectories of stars and GMCs in the Galaxy and determine how often stars pass through GMCs. We find a strong decreasing dependence with Galactocentric radius, and with the velocity perpendicular to the Galactic plane, $V_z$. The textit{XY}-component of the kinematic heating of stars was shown to not affect the GMC hit rate, unlike the textit{Z}-dependence ($V_z$) implies that stars hit fewer GMCs as they age. GMCs are locations of star formation, therefore we also determine how often stars pass near supernovae. For the supernovae the decrease with $V_z$ is steeper as how fast the star passes through the GMC determines the probability of a supernova encounter. We then integrate a set of Sun-like trajectories to see the implications for the Sun. We find that the Sun hits $1.6pm1.3$ GMCs per Gyr which results in $1.5pm1.1$ or (with correction for clustering) $0.8pm 0.6$ supernova closer than 10 pc per Gyr. The different supernova frequencies are from whether one considers multiple supernova per GMC crossing (few Myr) as separate events. We then discuss the effect of the GMC hits on the Oort cloud, and the Earth's climate due to accretion, we also discuss the records of distant supernova. Finally, we determine Galactic Habitable Zone using our model. For the thin disk we find it to lie between 5.8-8.7 kpc and for the thick disk to lie between 4.5-7.7 kpc." @default.
- W2922217267 created "2019-03-22" @default.
- W2922217267 creator A5003674268 @default.
- W2922217267 creator A5031569510 @default.
- W2922217267 date "2019-04-10" @default.
- W2922217267 modified "2023-10-14" @default.
- W2922217267 title "Stellar encounters with giant molecular clouds" @default.
- W2922217267 cites W1599587210 @default.
- W2922217267 cites W1624693442 @default.
- W2922217267 cites W1760695999 @default.
- W2922217267 cites W1934387688 @default.
- W2922217267 cites W1951688503 @default.
- W2922217267 cites W1964026845 @default.
- W2922217267 cites W1967158490 @default.
- W2922217267 cites W1967182202 @default.
- W2922217267 cites W1969311253 @default.
- W2922217267 cites W1969726468 @default.
- W2922217267 cites W1977164470 @default.
- W2922217267 cites W1977340365 @default.
- W2922217267 cites W1977987564 @default.
- W2922217267 cites W1982200130 @default.
- W2922217267 cites W1985517636 @default.
- W2922217267 cites W1988275519 @default.
- W2922217267 cites W1990556415 @default.
- W2922217267 cites W1990788885 @default.
- W2922217267 cites W1991909823 @default.
- W2922217267 cites W1994049450 @default.
- W2922217267 cites W1994517704 @default.
- W2922217267 cites W1995522939 @default.
- W2922217267 cites W1997213730 @default.
- W2922217267 cites W2004154417 @default.
- W2922217267 cites W2006269077 @default.
- W2922217267 cites W2008800988 @default.
- W2922217267 cites W2011479353 @default.
- W2922217267 cites W2033808067 @default.
- W2922217267 cites W2036186127 @default.
- W2922217267 cites W2036995861 @default.
- W2922217267 cites W2037049681 @default.
- W2922217267 cites W2039226225 @default.
- W2922217267 cites W2042338982 @default.
- W2922217267 cites W2055441448 @default.
- W2922217267 cites W2055881397 @default.
- W2922217267 cites W2059365121 @default.
- W2922217267 cites W2060128328 @default.
- W2922217267 cites W2061574271 @default.
- W2922217267 cites W2065368132 @default.
- W2922217267 cites W2068903138 @default.
- W2922217267 cites W2073845444 @default.
- W2922217267 cites W2078942688 @default.
- W2922217267 cites W2081691936 @default.
- W2922217267 cites W2088790494 @default.
- W2922217267 cites W2098564368 @default.
- W2922217267 cites W2124781911 @default.
- W2922217267 cites W2125174497 @default.
- W2922217267 cites W2125388463 @default.
- W2922217267 cites W2128885599 @default.
- W2922217267 cites W2129017750 @default.
- W2922217267 cites W2129760210 @default.
- W2922217267 cites W2132514858 @default.
- W2922217267 cites W2142824603 @default.
- W2922217267 cites W2146110834 @default.
- W2922217267 cites W2154897082 @default.
- W2922217267 cites W2160498335 @default.
- W2922217267 cites W2168227401 @default.
- W2922217267 cites W2216753448 @default.
- W2922217267 cites W2230493961 @default.
- W2922217267 cites W2276190878 @default.
- W2922217267 cites W2327226977 @default.
- W2922217267 cites W2331321138 @default.
- W2922217267 cites W2341096427 @default.
- W2922217267 cites W2346333600 @default.
- W2922217267 cites W2485876312 @default.
- W2922217267 cites W2497179942 @default.
- W2922217267 cites W2513362382 @default.
- W2922217267 cites W2533579457 @default.
- W2922217267 cites W2579376589 @default.
- W2922217267 cites W2603784875 @default.
- W2922217267 cites W2609191735 @default.
- W2922217267 cites W2695994393 @default.
- W2922217267 cites W2753189808 @default.
- W2922217267 cites W2766556282 @default.
- W2922217267 cites W2775275747 @default.
- W2922217267 cites W2775379243 @default.
- W2922217267 cites W2796399696 @default.
- W2922217267 cites W3099338766 @default.
- W2922217267 cites W3100734607 @default.
- W2922217267 cites W3101463779 @default.
- W2922217267 cites W3101967518 @default.
- W2922217267 cites W3102011538 @default.
- W2922217267 cites W3103145910 @default.
- W2922217267 cites W3103375210 @default.
- W2922217267 cites W3104368567 @default.
- W2922217267 cites W3104779284 @default.
- W2922217267 cites W3105769324 @default.
- W2922217267 cites W3105930256 @default.
- W2922217267 cites W3122474735 @default.
- W2922217267 cites W3123847504 @default.
- W2922217267 cites W3124275756 @default.
- W2922217267 cites W3124280327 @default.
- W2922217267 cites W4292508430 @default.