Conditions and other risk factors that may be associated with severe illness and death are listed below. Having underlying medical conditions may also increase oneâ€™s risk for severe illness from COVID-19. Symptoms associated with COVID-19 include cough, shortness of breath or difficulty breathing, fever, chills, muscle pain, headache, sore throat or new loss of taste or smell.ĬOVID-19 can present with severe illness in individuals of any age and without any previous health problems, but the risk for severe illness from COVID-19 increases with age, with older adults at highest risk. Infection has been detected globally and in all 50 states.

Infection with the virus can range from being asymptomatic to life-threatening respiratory illness.

(235 additional files not shown) You must enabled JavaScript to view entire file list.This test is for use by persons 18+ who are not experiencing severe symptoms.ĬOVID-19 is caused by the SARS-CoV-2 virus.

Ascii versions of all spectra are available toĭownload with the electronic version of the journal. Temperature sensitive in opposite directions, and Sr II, which is gravity

Useful for spectral typing as those involving Ti I and C I or S I, which are

We identify the line ratios that appear especially Grid of spectroscopic standards to identify temperature and surface gravityĭiagnostics near 1 um. Trends in the excitation potential, line depth, and equivalent width across the Prominent molecular bands from CN and FeH. Low excitation, Cr I, Fe I, and Si I at moderate excitation, and C I, S I, and Neutral and singly ionized species, most frequently those of Fe I and Ti I at Includes a wide range of line excitation potentials, from 0-13 eV, arising from Of atomic line absorption features in the 0.95-1.11 um range. In addition to a spectral atlas, we present a catalog Present a grid of F, G, K, and M spectral standards observed at high spectral

High quality instrumentation in the 1 um near-infrared atmospheric window to Download a PDF of the paper titled F, G, K, M Spectral Standards in the Y Band (0.95-1.11 um), by Chelsea Sharon and 2 other authors Download PDF Abstract: We take advantage of good atmospheric transparency and the availability of

Download gravity diagnostics