{"id":378,"date":"2021-01-02T12:10:00","date_gmt":"2021-01-02T06:40:00","guid":{"rendered":"http:\/\/posts.3cepheids.co.in\/wp\/?p=378"},"modified":"2021-01-28T20:04:14","modified_gmt":"2021-01-28T14:34:14","slug":"best-spectrophotometric-standards","status":"publish","type":"post","link":"https:\/\/posts.3cepheids.co.in\/wp\/technical\/best-spectrophotometric-standards\/","title":{"rendered":"Best Spectrophotometric Standards"},"content":{"rendered":"\n<pre class=\"wp-block-preformatted\">Best spectrophotometric standards:\n                                      epoch  mu a cosd  mu d  Class   V Mag\n\nLTT377         00 41 02.9  -33 44 06  1985                    f       11.2\nFeige 24       02 32 30.9  +03 30 51  1950   +0.083   +0.010  DAwke   12.42\nEG21           03 10 22.1  -68 39 28  1985                    DA      11.4 \nG191B2B=EG247  05 01 31.5  +52 45 52  1950   +0.10    -0.0873 DAwk    11.78\nGD71           05 49 34.79 +15 52 37  1950   +        -0.1898 DA1     13.03\nLTT2415        05 56 24.2  -27 51 26  1985                            12.2\nEG54           07 40 19.52 -17 24 41  2000  +1.136\"\/y -0.52\"  DF      12.98 \nLTT3218        08 41 33.6  -32 56 55  1985                    DA      11.8\nEG63           08 47 29.6  -18 59 50  2000  -0.12\"\/y -0.05\"\/y DB      15.55\nLTT3864        10 31 33.1  -35 33 03  1985                    f       12.1\nFeige 34=EG71  10 36 41.1  +43 21 50  1950                    sdO     11.24\nGD153          12 54 35.21 +22 18 09  1950            -0.1898 DA1     13.35\nHZ 43 =EG98    13 14 00.7  +29 21 49  1950   -0.149   -0.0813 DAwk    12.91\nHZ 44          13 21 19.1  +36 23 38  1950   -0.062   +0.031  sdO     11.67\nEG274          16 23 33.7  -39 13 48  2000                    DA      11.0\nLTT7379        18 36 26.2  -44 18 37  1985                    G0      10.2\nHD 192281      20 10 46.8  +40 07 01  1950                    O5f      7.54\nBD+284211=J256 21 48 57.1  +28 37 48  1950                    sdOp    10.56\nLTT9239        22 52 40.88 -20 35 26  2000                    f       12.0\nFeige110=EG158 23 17 23.5  -05 26 22  1950   +0.003   -0.003  sdO     11.88\n\nOK standards:\n\nFeige 25       02 36 00.0  +05 15 16  1950                    B6V     12.01\nHiltner 600    06 42 37.2  +02 11 25  1950                    B1V     10.42\nFeige 56       12 04 13.8  +11 56 55  1950                    B5p     11.11\nFeige 92       14 09 41.3  +50 21 07  1950                    Bp      11.62\nBD+33 2642     15 50 02.9  +33 05 49  1950                    B2 IVp  10.88\nBD+40 4032     20 06 40.0  +41 06 15  1950                    B2 III  10.45\n\nThe first set contains O stars without much Balmer absorption plus\nfaint southern standards from the list of Stone &amp; Baldwin 1983, MN 204, 347.\nThe second set is mostly B stars that have a bit of Balmer absorption\nand are usually OK.\n<br>from Link: <a href=\"https:\/\/www.cfa.harvard.edu\/~dfabricant\/huchra\/standards.specp\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.cfa.harvard.edu\/~dfabricant\/huchra\/standards.specp<\/a><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Best spectrophotometric standards: epoch mu a cosd mu d Class V Mag LTT377 00 41 02.9 -33 44 06 1985 f 11.2 Feige 24 02 32 30.9 +03 30 51 1950 +0.083 +0.010 DAwke 12.42 EG21 03 10 22.1 -68 39 28 1985 DA 11.4 G191B2B=EG247 05 01 31.5 +52 45 52 1950 +0.10 -0.0873 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[24],"tags":[],"class_list":["post-378","post","type-post","status-publish","format-standard","hentry","category-technical"],"_links":{"self":[{"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/posts\/378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/comments?post=378"}],"version-history":[{"count":1,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/posts\/378\/revisions"}],"predecessor-version":[{"id":379,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/posts\/378\/revisions\/379"}],"wp:attachment":[{"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/media?parent=378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/categories?post=378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/posts.3cepheids.co.in\/wp\/wp-json\/wp\/v2\/tags?post=378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}