{"id":676,"date":"2024-12-25T10:36:08","date_gmt":"2024-12-25T02:36:08","guid":{"rendered":"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/?page_id=676"},"modified":"2024-12-25T10:36:08","modified_gmt":"2024-12-25T02:36:08","slug":"resources","status":"publish","type":"page","link":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/resources\/","title":{"rendered":"Resources"},"content":{"rendered":"\n<ul class=\"link\"><li><a href=\"#oumuamua\">Origin of Oumuamua<\/a><\/li><li><a href=\"#encounter\">Stellar encounters<\/a><\/li><li><a href=\"#network\">Habitability network<\/a><\/li><li><a href=\"#OC\">Oort Cloud simulations<\/a><\/li><li><a href=\"#astrobridge\">Astrobridge: A software to calibrate astro-images taken by both professionals and amateurs<\/a><\/li><\/ul>\n\n\n\n<p>I have written codes for data reduction and statistical analysis. These are open sources which can be used for free. Please credit relevant publications if you use these resources.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><\/figure>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><video controls src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/orbit_oumuamua_small.mp4\"><\/video><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\" id=\"oumuamua\">Origin of Oumuamua<\/h2>\n\n\n\n<p class=\"has-normal-font-size\">This animation is to show the motions of stellar encounters relative to the first interstellar visitor `Oumuamua. The five slow encounters of `Oumuamua are shown in green color.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><video controls src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/encounter_tiny.mp4\"><\/video><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\" id=\"encounter\">Stellar encounters<\/h2>\n\n\n\n<p class=\"has-normal-font-size\">The above animation shows the motions of stars which are projected onto the xy, xz, and yz planes in the Galactocentric reference system.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><video controls src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/network_tiny1.mp4\"><\/video><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\" id=\"network\">Habitability network<\/h2>\n\n\n\n<p class=\"has-normal-font-size\">This animation shows the network of habitable worlds in the solar neighborhood (&lt;20pc) in the Galactic coordinates (L and B) if assuming every star has one habitable planet. When two stars is separated by less than 2pc, a line will appear connecting them. If they move away from each other, the line will gradually disappear. The orange dot at the center represents the Sun.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><video controls src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/animation_max10Myr_dt0.01Myr_trace_25persec_tiny3-2.mp4\"><\/video><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\" id=\"OC\">Oort Cloud simulations<\/h2>\n\n\n\n<p class=\"has-normal-font-size\">This movie is created from the results of Oort cloud simulations which are run in the <a href=\"http:\/\/www.amusecode.org\/\"><strong>AMUSE software<\/strong><\/a> environment. Simulation of the Oort Cloud under perturbations from the Galactic tide and stellar encounters over 10 Myr with a time step of 0.01 Myr.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-media-text alignwide is-stacked-on-mobile\" style=\"grid-template-columns:59% auto\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"791\" src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-1024x791.jpg\" alt=\"\" class=\"wp-image-183\" srcset=\"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-1024x791.jpg 1024w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-300x232.jpg 300w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-768x593.jpg 768w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-1536x1186.jpg 1536w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha-389x300.jpg 389w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/agatha.jpg 1720w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<h2 class=\"wp-block-heading\" id=\"agatha\">Agatha<\/h2>\n\n\n\n<p class=\"has-normal-font-size\">Agatha is an online app for the analysis of time series data. It is a framework of red noise periodograms and moving periodograms. The app is available at <strong><a href=\"https:\/\/phillippro.shinyapps.io\/Agatha\/\">https:\/\/phillippro.shinyapps.io\/Agatha\/<\/a><\/strong> and at <a href=\"https:\/\/github.com\/phillippro\/agatha\"><strong>GitHub<\/strong><\/a>.<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h2 class=\"wp-block-heading\" id=\"astrobridge\">Astrobridge<\/h2>\n\n\n\n<figure class=\"wp-block-gallery columns-2 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"794\" height=\"716\" src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1.png\" alt=\"\" data-id=\"187\" data-full-url=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1.png\" data-link=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/?attachment_id=187\" class=\"wp-image-187\" srcset=\"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1.png 794w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1-300x271.png 300w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1-768x693.png 768w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge1-1-333x300.png 333w\" sizes=\"auto, (max-width: 794px) 100vw, 794px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"791\" height=\"703\" src=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2.png\" alt=\"\" data-id=\"188\" data-full-url=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2.png\" data-link=\"http:\/\/web.tdli.sjtu.edu.cn\/ffeng\/?attachment_id=188\" class=\"wp-image-188\" srcset=\"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2.png 791w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2-300x267.png 300w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2-768x683.png 768w, https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-content\/uploads\/sites\/12\/2021\/01\/astrobridge2-338x300.png 338w\" sizes=\"auto, (max-width: 791px) 100vw, 791px\" \/><\/figure><\/li><\/ul><figcaption class=\"blocks-gallery-caption\"><em>The above two images are original and calibrated JPG photos of Orion Nebula. Parameters: Nickon D3100; Exp=5s; ISO=Hi2; Semi-Apo D=100mm f\/6<\/em><\/figcaption><\/figure>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<h3 id=\"package\">Required Python packages<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li>Scipy<\/li><li>Numpy<\/li><li>Pyfits<\/li><li>Astropy<\/li><li>Matplotlib<\/li><\/ul>\n\n\n\n<p>Download:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>astrobridge_v1.0<\/li><li><a href=\"https:\/\/github.com\/phillippro\/astrobridge\"><strong>github<\/strong><\/a><\/li><\/ul>\n\n\n\n<p><small>Astrobridge by <a href=\"http:\/\/www.mpia.de\/homes\/ffeng\/\"><strong>Fabo Feng<\/strong><\/a> and Lia Corrales is licensed under a <a href=\"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/\"><strong>Creative Commons Attribution-NonCommercial 4.0 International License<\/strong><\/a>.<\/small>Based on a work at <a href=\"https:\/\/github.com\/phillippro\/astrobridge\"><strong>https:\/\/github.com\/phillippro\/astrobridge<\/strong><\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Origin of Oumuamua Stellar encounters Ha &hellip; <a href=\"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/resources\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-676","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/pages\/676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/comments?post=676"}],"version-history":[{"count":1,"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/pages\/676\/revisions"}],"predecessor-version":[{"id":696,"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/pages\/676\/revisions\/696"}],"wp:attachment":[{"href":"https:\/\/web.tdli.sjtu.edu.cn\/ffeng\/wp-json\/wp\/v2\/media?parent=676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}