We now consider estimation of count rates for objects with stellar, power law, and emission line spectra. To estimate the number of electrons collected from a point source of apparent visual magnitude V, one can use the equation: . ... The second column contains B-V. See Target Count Rates . ... If one knows the spectral index (which is zero for a source with a flat continuum), V + AB can also be calculated as the monochromatic Oke system magnitude at the corrected mean wavelength of the filter: . ...
ST-ECF Instrument Science Report ACS 2001-003 ACS Grism Simulations using SLIM 1.0 N. Pirzkal, A. Pasquali, J. R. Walsh, R. N. Hook, W. Freudling, R. Albrecht, R.A.E. Fosbury April 4, 2001 ABSTRACT We introduce SLIM, a slitless spectroscopy simulator written in Python which can be used to simulate the ACS grism and prism modes. ... We have thus developed a simulator called SLIM which is able to disperse an input spectrum in a well-controlled manner. ... Can simulate multiple order grism observations. ...
... The science from both these missions contributed to three of the Nobel Prizes Giacconi (2002), Mather, and Smoot (2006) - awarded for NASA-based science. ... We encourage NASA to seek new launch capabilities to fill this strategic gap in moderate lift rockets to enable the Explorer program to continue launching missions with significant science payoff but reduced costs and timescales compared to large strategic missions. ... 18 Appendix B: Explorer Missions 1989-present (From PILMSS) No . ...
THE ASTRONOMICAL JOURNAL, 116 : 1009 х1038, 1998 September ( 1998. The American Astronomical Society. All rights reserved. Printed in U.S.A. OBSERVATIONAL EVIDENCE FROM SUPERNOVAE FOR AN ACCELERATING UNIVERSE AND A COSMOLOGICAL CONSTANT ADAM G. RIESS,1 ALEXEI PETER M. GARNAVICH,2 B. LEIBUNDGUT,6 M. R. V. FILIPPENKO,1 PETER CHALLIS,2 ALEJANDRO CLOCCHIATTI,3 ALAN DIERCKS,4 RON L. GILLILAND,5 CRAIG J. HOGAN,4 SAURABH JHA,2 ROBERT P. KIRSHNER,2 M. PHILLIPS,7 DAVID REISS,4 BRIAN P. SCHMIDT,8,9 ROBERT A.
... Some of these commands are L A T E X macros, while oth ers belong to plain T E X; no attempt to differen tiate them is made. ``/ --- ordinary space after period. ``! --- negative thin space = \Gamma 1 6 quad; xx``!x yields xxx (math mode). ``'' makes an umlaut, as Ёo. ``# prints a pound sign: #. ``$ prints a dollar sign: $. ``% prints a percent sign: %. ``& prints an ampersand: &. ``' in tabbing environment moves current column to the right of the previous column. ... math mode). ``phi is OE. ...
... A Front of line M-G Goto a line ^E End of line ^N Next line M-N Front of paragraph ^P Previous line M-P End of paragraph ----------------------------------------------------------------------------- = (2) DELETING INSERTING -- Delete previous character ^D or DELETE Delete next character ^C or INSERT Insert a space M- -- Delete previous word M-D Delete next word ^K Close ( ... The KILL BUFFER is the text which has been most recently saved or deleted. ...