<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dataset SYSTEM "http://tarantella.gsfc.nasa.gov/xml/dataset_048.dtd">
<dataset subject="astronomy" xmlns:xlink="http://www.w3.org/XML/XLink/0.9">
	<title>A Library of Stellar Spectra</title>
	<altname type="ADC">3092</altname>
		<altname type="CDS">III/92</altname>
		<altname type="brief">A Library of Stellar Spectra</altname>
	<reference>
		<source>
<journal>
	<title>A Library of Stellar Spectra</title>
	<author>
			<initial>G</initial>
			<initial>H</initial>
			<lastName>Jacoby</lastName></author>
	<author>
			<initial>D</initial>
			<initial>A</initial>
			<lastName>Hunter</lastName></author>
	<author>
			<initial>C</initial>
			<initial>A</initial>
			<lastName>Christian</lastName></author>
	<name>Astrophys. J. Suppl. Ser.</name>
	<volume>56</volume>
	<pageno>257</pageno>
		<date>
			<year>1984</year></date>
	<bibcode>1984ApJS...56..257J</bibcode></journal></source>
	<related>
			<holding role="similar">III/83 : IUE Low-Dispersion Reference Atlas I, Normal Stars (Heck+ 1984)<xlink:simple href="III/83"/></holding>
			<holding role="similar">III/88 : Stellar Spectrophotometric Atlas (Gunn+ 1983)<xlink:simple href="III/88"/></holding>
			<holding role="similar">III/124 : Spectrophotometry of 60 stars (Kiehling, 1987)<xlink:simple href="III/124"/></holding>
			<holding role="similar">III/166 : A New Library of Optical Spectra (Silva+ 1992)<xlink:simple href="III/166"/></holding>
			<holding role="similar">III/196 : Near-IR stellar spectra from 1.428 to 2.5 um (Lancon+ 1996)<xlink:simple href="III/196"/></holding>
			<holding role="similar">VI/50 : Intensity Distribution of Normal Stars  (Sviderskiene, 1988)<xlink:simple href="VI/50"/></holding>
			<holding role="similar">J/PASP/110/863 :  A Stellar Spectral Flux Library 1150-25000{AA} (Pickles 1998)<xlink:simple href="J/PASP/110/863"/></holding>
			   Jacoby G.H., Hunter D.A. and Christian C.A. 1984, A Library of Stellar
     Spectra, Astrophys. J. Suppl. Ser. 56, 278. (1984ApJS...56..257J)</related></reference>
	<keywords parentListURL="http://messier.gsfc.nasa.gov/xml/keywordlists/adc_keywords.html">
			<keyword xlink:href="Spectrophotometry.html">Spectrophotometry</keyword></keywords>
	<descriptions>
				<description>
				<para>
    The machine-readable version of the library contains digital spectra
    of 161 stars of spectral types O through M and luminosity classes I,
    III, and V. Most stars are of solar metallicity, although two were
    chosen specifically for low metallicity. The data were obtained with
    the Intensified Reticon Scanner on the #1 91-cm telescope at Kitt Peak
    National Observatory. The scans cover the wavelength range 3510-7427
    angstroms, with a resolution of approximately 4.5 angstroms, while the
    typical photometric uncertainty of each resolution element is about 1
    percent and broadband variations are &lt; 3 percent.</para></description>
                        <details/></descriptions>
	<tableHead>
		<tableLinks>
				<tableLink xlink:href="stars.dat">
	<title>Information on each star</title></tableLink></tableLinks>
	<fields>
		<field>
			<name>Name</name>
			<definition>Star identification (HD, BD, SAO, misc.)
	<footnote>
			<para>
   Positions with variable precision derived from SIMBAD.
   The following four stars could not be identified,
   and have the RA and Dec columns blank:
   TR A 14   (G4 V star)
   HD 249240 (G7 III star), the HD classifies this star as A2.
             The star could be HD 24924 (K0 star, Vmag=9.39, at
             03 57 35.5 -01 58 30 (2000)).
   LSIV P 24 (B9 I)
   42 LSI    (A2 I)
</para></footnote></definition>
			<units>---</units></field>
		<field>
			<name>Sp</name>
			<definition>Adopted spectral type.</definition>
			<units>---</units></field>
		<field>
			<name>Lum</name>
			<definition>Adopted luminosity class</definition>
			<units>---</units></field>
		<field>
			<name>Sp1</name>
			<definition>Spectral type from lit. if different</definition>
			<units>---</units></field>
		<field>
			<name>Lum1</name>
			<definition>Luminosity class from lit. if different</definition>
			<units>---</units></field>
		<field>
			<name>E(B-V)</name>
			<definition>Derived color excess E(B-V)
	<footnote>
			<para>
   Derived color excess, E(B-V), used to to deredden the spectrum.</para></footnote></definition>
			<units>mag</units></field>
		<field>
			<name>(U-B)s</name>
			<definition>U-B color synthesized from the spectrum.</definition>
			<units>mag</units></field>
		<field>
			<name>(B-V)s</name>
			<definition>B-V color synthesized from the spectrum.</definition>
			<units>mag</units></field>
		<field>
			<name>(U-B)0</name>
			<definition>Dereddened color derived from (U-B)s</definition>
			<units>mag</units></field>
		<field>
			<name>(B-V)0</name>
			<definition>Dereddened color derived from (B-V)s</definition>
			<units>---</units></field>
		<field>
			<name>U-B</name>
			<definition>U-B color taken from the literature.</definition>
			<units>mag</units></field>
		<field>
			<name>B-V</name>
			<definition>B-V color taken from the literature.</definition>
			<units>mag</units></field>
		<field>
			<name>lambda1</name>
			<definition>Wavelength of first pixel</definition>
			<units>0.1nm</units></field>
		<field>
			<name>Dlambda</name>
			<definition>Wavelength increment per pixel</definition>
			<units>0.1nm</units></field>
		<field>
			<name>RAh</name>
			<definition>Right Ascension J2000 (hours)</definition>
			<units>h</units></field>
		<field>
			<name>RAm</name>
			<definition>Right Ascension J2000 (minutes)</definition>
			<units>min</units></field>
		<field>
			<name>RAs</name>
			<definition>Right Ascension J2000 (seconds)</definition>
			<units>s</units></field>
		<field>
			<name>DE-</name>
			<definition>Declination J2000 (sign)</definition>
			<units>---</units></field>
		<field>
			<name>DEd</name>
			<definition>Declination J2000 (degrees)</definition>
			<units>deg</units></field>
		<field>
			<name>DEm</name>
			<definition>Declination J2000 (minutes)</definition>
			<units>arcmin</units></field>
		<field>
			<name>DEs</name>
			<definition>Declination J2000 (seconds)</definition>
			<units>arcsec</units></field></fields></tableHead>
	<tableHead>
		<tableLinks>
				<tableLink xlink:href="fluxes.dat">
	<title>The Library of Stellar Spectra, flux data</title></tableLink></tableLinks>
	<fields>
		<field>
			<name>ID</name>
			<definition>Star identification from headers.dat</definition>
			<units>---</units></field>
		<field>
			<name>F(i)</name>
			<definition>Flux values F(i) in erg/cm2/s/Angstrom
	<footnote>
			<para>
   Flux values F(i) in erg/cm2/s/Angstrom at wavelengths:
     lambda(i) = lambda1 + (i-1+[7*(L-1)])*Dlambda
     where L is the number of the line for the star of interest. There are
     400 lines of fluxes for each star.  Hence, L is the line number in the
     file, modulo 400.

     In the final record for each star, the seventh flux on the record
     appears blank.
</para></footnote></definition>
			<units>10mW/m2/nm</units></field></fields></tableHead>
	
	<history>
		<ingest>
	
			<creator>
				<lastName>Julie Anne Watko</lastName>
				<affiliation>SSDOO/ADC</affiliation></creator>
			<creator>
				<lastName>Francois Ochsenbein</lastName>
				<affiliation>CDS</affiliation></creator>
	<date>
		<year>1998</year><month>Oct</month><day>06</day></date><acknowledgement>Documentation for the original version was written by Wayne H. Warren,
    Jr. [NSSDC/WDC-A-R&amp;S] November 1984. This ReadMe file is a revision of
    Dr. Warren's original document and an Intro document [CDS] 24-May-1993
    to the current CDS standard.</acknowledgement></ingest>
		
		<revisions>
	<revision>
		<creator>
			<lastName>UNKNOWN</lastName></creator>
		<date><year>UNKNOWN</year></date>
		<para>  * 24-May-1993 [CDS]
    The original data pertaining to each star were contained in a group
    of 352 data records. The first two (header) records contained general
    information about the star, such as identification, spectral type, UBV
    colors and reddening, intrinsic UBV colors, and wavelength
    information. Records 3-352 contained 2799 flux values in groups of
    eight fluxes per record. The original file can easily be rebuilt by
    splitting each record in 352 80-bytes records; this split is
    straightforward on Unix workstations with the "fold" command.

  * 23-Aug-1996 Julie Anne Watko [SSDOO/ADC]
    The previous version of this catalog contained all data for each star
    on a single record. To provide a more useful lrecl, the long records
    were folded into 70-byte records using the Unix fold command. J.A.
    Watko [ADC] used IDL to insert star identification into the first 10
    bytes of each record and to create a separate file of header data.

  * 06-Oct-1998 [CDS]
    Positions of the stars were added when possible --- four stars could
    not be recognized.</para></revision></revisions></history>
	<identifier>III_92.xml</identifier></dataset>
