-
Notifications
You must be signed in to change notification settings - Fork 1
/
field_guide__beta_lyr.html
239 lines (150 loc) · 7.64 KB
/
field_guide__beta_lyr.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1"><meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Beta Lyr (blyr)</title>
<link rel="stylesheet" href="_static/pygments.css" type="text/css" />
<link rel="stylesheet" href="_static/theme.css " type="text/css" />
<link rel="stylesheet" href="_static/custom.css" type="text/css" />
<!-- sphinx script_files -->
<script src="_static/documentation_options.js?v=5929fcd5"></script>
<script src="_static/doctools.js?v=888ff710"></script>
<script src="_static/sphinx_highlight.js?v=dc90522c"></script>
<!-- bundled in js (rollup iife) -->
<!-- <script src="_static/theme-vendors.js"></script> -->
<script src="_static/theme.js" defer></script>
<link rel="index" title="Index" href="genindex.html" />
<link rel="search" title="Search" href="search.html" />
</head>
<body>
<div id="app">
<div class="theme-container" :class="pageClasses"><navbar @toggle-sidebar="toggleSidebar">
<router-link to="index.html" class="home-link">
<span class="site-name">ZTF Variable Source Classification Project</span>
</router-link>
<div class="links">
<navlinks class="can-hide">
</navlinks>
</div>
</navbar>
<div class="sidebar-mask" @click="toggleSidebar(false)">
</div>
<sidebar @toggle-sidebar="toggleSidebar">
<navlinks>
</navlinks><div id="searchbox" class="searchbox" role="search">
<div class="caption"><span class="caption-text">Quick search</span>
<div class="searchformwrapper">
<form class="search" action="search.html" method="get">
<input type="text" name="q" />
<input type="submit" value="Search" />
<input type="hidden" name="check_keywords" value="yes" />
<input type="hidden" name="area" value="default" />
</form>
</div>
</div>
</div><div class="sidebar-links" role="navigation" aria-label="main navigation">
<div class="sidebar-group">
<p class="caption">
<span class="caption-text"><a href="index.html#ztf-variable-source-classification-project">ztf variable source classification project</a></span>
</p>
<ul class="">
<li class="toctree-l1 ">
<a href="developer.html" class="reference internal ">Installation/Developer Guidelines</a>
</li>
<li class="toctree-l1 ">
<a href="quickstart.html" class="reference internal ">Quick Start Guide</a>
</li>
<li class="toctree-l1 ">
<a href="usage.html" class="reference internal ">Usage</a>
</li>
<li class="toctree-l1 ">
<a href="scripts.html" class="reference internal ">SCoPe script guide</a>
</li>
<li class="toctree-l1 ">
<a href="scanner.html" class="reference internal ">Guide for Fritz Scanners</a>
</li>
<li class="toctree-l1 ">
<a href="field_guide.html" class="reference internal ">Field guide</a>
</li>
<li class="toctree-l1 ">
<a href="allocation.html" class="reference internal ">ACCESS allocation management</a>
</li>
<li class="toctree-l1 ">
<a href="zenodo.html" class="reference internal ">Data Releases on Zenodo</a>
</li>
<li class="toctree-l1 ">
<a href="license.html" class="reference internal ">License</a>
</li>
</ul>
</div>
</div>
</sidebar>
<page>
<div class="body-header" role="navigation" aria-label="navigation">
<ul class="breadcrumbs">
<li><a href="index.html">Docs</a> »</li>
<li>Beta Lyr (blyr)</li>
</ul>
<ul class="page-nav">
</ul>
</div>
<hr>
<div class="content" role="main" v-pre>
<section id="beta-lyr-blyr">
<h1>Beta Lyr (blyr)<a class="headerlink" href="#beta-lyr-blyr" title="Link to this heading">¶</a></h1>
<p>Semi-detached eclipsing binaries (also called <a class="reference external" href="https://en.wikipedia.org/wiki/Beta_Lyrae_variable">beta Lyrae variables</a>) are binary star systems (i.e. two stars that are in orbit around each other) that are aligned such that they eclipse each other relative to our line of sight from the Earth. Unlike detached EBs, semi-detatched systems are so close to each other that the shape of (at least one of) the stars in the system are distorted, giving rise to the smooth periodic variations even when the system is not eclipsing.</p>
<section id="classification-and-numbers">
<h2>Classification and numbers<a class="headerlink" href="#classification-and-numbers" title="Link to this heading">¶</a></h2>
<ul class="simple">
<li><p>Supertypes</p>
<ul>
<li><p>variable</p></li>
<li><p>periodic</p></li>
<li><p>binary</p></li>
<li><p>eclipsing</p></li>
</ul>
</li>
<li><p>Occurrence rate: very common, about 10<sup>5</sup> expected in ZTF data</p></li>
</ul>
</section>
<section id="ztf-light-curves">
<h2>ZTF light curves<a class="headerlink" href="#ztf-light-curves" title="Link to this heading">¶</a></h2>
<p><img alt="ZTF betalyr" src="_images/beta_lyr.png" /></p>
<section id="description">
<h3>Description<a class="headerlink" href="#description" title="Link to this heading">¶</a></h3>
<p>Any type of star can be in an eclipsing binary (so they may be small, large, hot, cool, etc.), which in turn can lead to a large range in eclipse amplitudes (though typically these are between 0.1 and ~1 mag, with most in the ~0.3 to 0.75 mag range) or eclipse periods (though our observations are typically only sensitive to periods between 0.1 to ~20 days).</p>
</section>
<section id="light-curve-characteristics">
<h3>Light curve characteristics<a class="headerlink" href="#light-curve-characteristics" title="Link to this heading">¶</a></h3>
<ul class="simple">
<li><p>periodic variable</p></li>
<li><p>Range of amplitudes (~0.2 to >1 mag)</p></li>
<li><p>Intermediate periods (log Period between -0.5 and 1.4)</p></li>
<li><p>light curve shape: EB, round or sinusoidal light curves, with imposed “V-shape” dips in the phase folded light curve</p></li>
</ul>
<p><img alt="HR diagram of Beta Lyrae" src="_images/hr__beta_lyr.png" /></p>
<p><img alt="Period histogram of Beta Lyrae" src="_images/period__beta_lyr.png" /></p>
</section>
</section>
<section id="references-and-further-reading">
<h2>References and further reading:<a class="headerlink" href="#references-and-further-reading" title="Link to this heading">¶</a></h2>
<ul class="simple">
<li><p>Sterken & Jasschek: Light curves of variable stars</p></li>
</ul>
</section>
</section>
</div>
<div class="page-nav">
<div class="inner"><ul class="page-nav">
</ul><div class="footer" role="contentinfo">
© Copyright 2021, The SCoPe collaboration.
<br>
Created using <a href="http://sphinx-doc.org/">Sphinx</a> 7.2.6 with <a href="https://github.com/schettino72/sphinx_press_theme">Press Theme</a> 0.9.1.
</div>
</div>
</div>
</page>
</div></div>
</body>
</html>