... Why is it that detection of emission lines is more reliable than that of absorption lines? ... When you look at the iconic Figure 1 from Protassov et al (2002) , which shows how the null distribution of the Likelihood Ratio Test (LRT) and how it holds up for testing the existence of emission and absorption lines. The thin vertical lines are the nominal F-test cutoffs for a 5% false positive rate. ... Tags: absorption line , emission line , F-test , LRT , Protassov , question for statisticians . ...

... Discovery of enrichment of the envelopes of post-AGB stars with heavy metals . As a result of monitoring carried out at the BTA telescope, a new phenomenon was discovered in the optical spectra of post-AGB supergiants with an emission at 21 ?m and an overabundance of carbon and heavy metals in the atmospheres - the splitting of the strongest absorption lines. ... Thus, we discovered for the first time the enrichment of the stellar envelope with heavy metals synthesized by the s-process. ...

Russian . ... text in English) . ... text in Russian) . ... Circular Polarization of Galilean Satellites of Jupiter . ... New Quasi-Isothermal Models of Galaxies . ... Moscow, Sternberg Astronomical Institute, December 20-21, 2012 . ... A New Source of Maser Radio Emission in the 1720-MHz OH Line . ... K.I. Churyumov, V.A. Ponomarenko, V.V. Kleshchonok, A.R. Baranskiy . ... Discovery of Radio Pulses from SGR 0418+5729 . ... The Discovery of New Pulsars on the BSA LPI Radio Telescope. ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

Search engine provided by WebGlimpse . String to search for: . ... Return only files modified within the last days. Maximum number of files returned: 10 50 100 1000 . Maximum number of matches per file returned: 10 30 50 500 . Maximum number of characters output per file: . ... sorted by author . sorted by date . sorted by subject . ...

Data Archive . Video-records archive . ... 1997 | ... Time (UT) Counter Remarks _______________________________________________________________________________ 05.01. 10:29:17 2:06:42 scan disk 11:58:23 2:11:19 active regions 06.01. 09:49:51 2:12:17 scan disk 10:56:24 2:19:10 active regions 12.01. 09:39:12 2:19:59 scan disk 10:03:41 2:27:51 active region 10:05:09 2:28:34 filament 10:07:17 2:29:10 ...