Planet 1902 HS = (359) [1893 M]
نویسندگان
چکیده
منابع مشابه
HS 0907 + 1902 : a new 4 . 2 hr eclipsing dwarf nova
We report on follow-up spectroscopy and photometry of the cataclysmic variable candidate HS 0907+1902 selected from the Hamburg Quasar Survey. B, V , and R photometry obtained during the first observed outburst of HS 0907+1902 (V ≈ 13) reveals deep eclipses (∆V ≈ 2.1 − 2.8) and an orbital period Porb = 4.2 h with the eclipse depth decreasing to the red. The outburst eclipse profiles are symmetr...
متن کاملSpectroscopy and Component Masses of the Eclipsing Dwarf Nova HS 0907 + 1902
HS0907+1902 was recently discovered to be one of a handful of deeply eclipsing dwarf novae with periods longward of the 2 – 3 hr ‘gap’. This paper presents orbit-resolved spectra and time series photometry of an eclipse. The apparent velocity amplitude of the M-dwarf secondary is K2 = 297 ± 15 km s . The phase of the radial velocities of the Hα emission line wings agrees accurately (for once) w...
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Purpose: There currently is no guideline regarding amplification or verification for children with aural atresia. This population, with the absence of the ear canal, has obvious congenital hearing loss. Research suggests that delayed treatment for hearing loss can result in speech and language impairments, including poor performance in school. In this study we examined the relationship between ...
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Here we genetically characterise pelvic finless, a naturally occurring model of hindlimb loss in zebrafish that lacks pelvic fin structures, which are homologous to tetrapod hindlimbs, but displays no other abnormalities. Using a hybrid positional cloning and next generation sequencing approach, we identified mutations in the nuclear localisation signal (NLS) of T-box transcription factor 4 (Tb...
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To assess the potential role of autophagy in amyotrophic lateral sclerosis (ALS), lumbar spinal cords in a total of 19 sporadic ALS cases and 27 age-matched controls were investigated. Immunohistochemical analysis using antibodies to the markers of autophagy microtubule-associated protein light chain 3 (LC3) and p62 was performed on samples from 12 ALS and 15 controls. Electron microscopy was p...
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ژورنال
عنوان ژورنال: Astronomische Nachrichten
سال: 1902
ISSN: 0004-6337,1521-3994
DOI: 10.1002/asna.19021591403