From vald@isaac.ast.univie.ac.at Sat Jul 8 21:41:41 1995 Subject: VALD-ems update To: vald_u , C.Gummersbach@lsw.uni-heidelberg.de, castelli@astts1.oat.ts.astro.it, cblake@phobos.astro.uwo.ca, cowley@astro.lsa.umich.edu, cpstar@bgearn.acad.bg, csj, dmd@iaa.es, ESM@v3600.vilspa.esa.es, EV@vilspa.esa.es, gpt@sao.stavropol.su, gwade@phobos.astro.uwo.ca, hackman@cc.helsinki.fi, hschnei@gwdg.de, ilian@auriga.ta3.sk, jlandstr@phobos.astro.uwo.ca, kelleher@enh.nist.gov, matthews@astro.ubc.ca, savanov@crao.crimea.ua, scott@astro.ubc.ca, sir@crao.crimea.ua, zboril@auriga.ta3.sk Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset="US-ASCII" Content-Length: 25325 X-Lines: 573 Vienna Atomic Line Data-Base ============================ Electronic Mail Service written by N.E.Piskunov Vienna, June 1994 VALDADM revision 1.2.2 Jul 7, 1995 1. Rationale ------------ Vienna Atomic Line Database (VALD) is a collection of atomic line parameters of astronomical interest and provides tools for selecting subsets of lines for typical astrophysical applications: line identification, chemical composition and radial velocity measurements, model atmosphere calculations etc. VALD Electronic Mail Service (VALD-EMS) is the main interface for accessing VALD by external users. VALD-EMS is aimed to endorse the following main principles of VALD access: - subsets of spectral line lists are extracted with the tools, consistent with the specific astronomical problem. VALD strongly discourages bulk data transfer and concentrates more on intelligent search and extraction procedures; - VALD provides data sets and extraction tools suitable for several spectroscopic applications; - VALD is regularly updated with critically evaluated data sets. The VALD project team experts investigate the statistical properties of the data, extensively compare the results obtained with different data sources, and establish the quality rating for each new source; - VALD computers are not dedicated to the VALD project alone, so the correct scheduling is important. Mail access lets VALD automatically process requests and queue them for execution on VALD computers at the most convenient time. It also allows us to have control over the size of the data traffic and to register VALD users. 2. How to become a VALD client? ------------------------------- To access VALD via VALD-EMS one should register in the list of VALD clients. This list contains INTERNET e-mail addresses from where VALD-EMS will accept the requests. In order to do so, send an e-mail to the VALD administrator (currently F. Kupka and N. Piskunov; for all e-mails concerning VALD-EMS only, please avoid to use other addresses, because that could result in a delay of the answer to your query) with the (INTERNET) address valdadm@galileo.ast.univie.ac.at with your full name and your e-mail address as in the example below: I would like to become a client of VALD. Please register me as James Fine. My e-mail address is: jfine@not.from.this.world Best regards, James Fine Unemployed astronomer If you intend to access VALD-EMS from different computers, send ALL e-mail addresses that you intend to use. 3. VALD data sets ----------------- When extracting line parameters with VALD-EMS, data records (in the answer from VALD to the client) will include labels for each line, which indicate the source of the data. Usually the label serves as a reference to the original list, from which the gf-value of the line has been taken from (for details see below). Currently VALD includes only atomic lines from the following lists: - Kurucz CD-ROM 18, December 4, 1993 edition is the source of data for lines with the labels: 'Bell light: Li to O' 'Bell light: F to Al' 'Bell light: Si to K' 'Bell heavy: Cu to Zn' 'Bell heavy: Ga to Ba' 'Bell heavy: La to Lu' 'Bell heavy: Hf to U' 'NLTE lines: He' 'NLTE lines: B' 'NLTE lines: C' 'NLTE lines: O' 'NLTE lines: Na' 'NLTE lines: Mg' 'NLTE lines: Al' 'NLTE lines: Si' 'NLTE lines: K' 'NLTE lines: Ca' - Kurucz CD-ROMs 20-22, July 3, 1994 edition are the sources of data for lines with the labels (observed energy levels only): 'GFIRON ext. (Ca-Ni) 900-1000' 'GFIRON ext. (Ca-Ni) 1000-1500' 'GFIRON ext. (Ca-Ni) 1500-2000' 'GFIRON ext. (Ca-Ni) 2000-2500' 'GFIRON ext. (Ca-Ni) 2500-3000' 'GFIRON ext. (Ca-Ni) 3000-4000' 'GFIRON ext. (Ca-Ni) 4000-5000' 'GFIRON ext. (Ca-Ni) 5000-6000' 'GFIRON ext. (Ca-Ni) 6000-8000' 'GFIRON ext. (Ca-Ni) 8000-12000' 'GFIRON ext. (Ca-Ni) 12000-16000' 'GFIRON ext. (Ca-Ni) >20000' - The following are the labels for data from R.L.Kurucz, E.Peytremann, 1975, SAO Special Reports, Vol. 362: 'Kurucz-Peytreman: Li to O' 'Kurucz-Peytreman: F to Al' 'Kurucz-Peytreman: Si to K' 'Kurucz-Peytreman: Cu to Zn' 'Kurucz-Peytreman: Ga to Ba' 'Kurucz-Peytreman: La to Lu' 'Kurucz-Peytreman: Hf to U' The Kurucz-Peytreman 1975 data is only used as a supplement list during the creation of a more extensive extraction from GFIRON data. Usually, data will be taken from this source only for the far UV. - Martin,G.A., Fuhr,J.R., and Wiese,W.L. 1988, J. Phys. Chem. Ref. Data, 17, Suppl. 3 corresponds to the labels: 'NBS: Scandium' 'NBS: Titanium' 'NBS: Vanadium' 'NBS: Chromium' 'NBS: Manganese' 'NBS: Iron' 'NBS: Cobalt' 'NBS: Nickel' These lists will be changed for the case of Fe 1 in a significant way: The wavelengths will be recalibrated and lower quality gf-values will be replaced. Then 'NBS: Iron' will be reorganized (and probably named differently). - Bizzarri, A., Huber, M.C.E., Noels, A., Grevesse, N., Bergeson, S.D., Tsekeris, P., Lawler, J.E., 1993, A&A 273, 707 as well as Ryabchikova, T.A., Hill, G.M., Landstreet, J.D., Piskunov, N., Sigut, T.A.A., 1994a, MNRAS 267, 697 were used to compile the file with the label: 'Ti 2 accurate gf-values' - Pinnington, E.H., Ji, Q., Guo, B., Berends, R.W., van Hunen, J., 1993, Can. J. Phys. 71, 470 as well as Sigut, T.A.A., Landstreet, J.D., 1990, MNRAS 247, 611 were used to compile the file with the label: 'Cr 2 accurate gf-values' - Komarovskij, V.A., 1991, Optica & Spectroskopia, 71, 559 includes line parameters for second rare earth spectra (Er II, Sm II. Nd II. Eu II) and has a reference: 'REE experimental data compilation' - O'Brian, T.R., Wicklife, M.E., Lawler J.E., Whaling, W., Brault, J.W. 1991, J. Opt. Soc. Am. B8, 1185 - Bard, A., Kock, A., Kock, M. 1991, Astron. Astrophys., 248, 315 - Bard, A., Kock, M. 1994, Astron. Astrophys., 282, 1014 - Nave, G., Johansson, S. 1994, Astron. Astropfys. Suppl., 'Fe I NMT with O'Brian et. al, Bard & Kock' VALD is constantly adding more lines, so look for the most recent version of this document for the actual references and the corresponding labels. Please take into account that for all modes of data extraction except for SHOW LINE (see Section 5), data is merged from different lists and the label refers to the source of the gf-value only. If you need the source for atomic data, other than gf, you have to use the SHOW LINE request (see Section 6), which enables you to see how the data from various sources are merged for a particular line. 4. VALD-EMS request ------------------- VALD-EMS request is an ordinary electronic mail, sent via INTERNET to: vald@galileo.ast.univie.ac.at or vald@131.130.36.8. Each mail can include ONLY ONE request. The request consists of a number of lines. ONLY THE FIRST 80 CHARACTERS OF EACH LINE ARE INTERPRETED BY VALD-EMS. The request starts with a line containing a string: begin request and ends with a line: end request Spaces are ignored and VALD is case insensitive, so the line EndRequests is also a valid termination for the request. All characters following the symbol # are ignored by VALD. This can be used for comments. For example: Begin request # this is a comment for the first line All mail is processed at certain times of the day and valid requests are interpreted and submitted for execution in the order of arrival. After the request has been processed, the output file is mailed back to the client. This file contains: VALD-EMS REQUEST NUMBER, all diagnostic information (syntactic errors, wrong parameter values, etc.) and the extracted parameters. If the client has difficulty identifying the problem with his/her request, he/she should address the VALD administrator with the VALD-EMS request number, which appears on the first line of the reply mail. 5. Types of request ------------------- VALD-EMS currently supports 4 types of requests: show line - extracts all information, available in VALD, about specific spectral line (although more than one line could appear in the output); extract all - extracts best atomic parameters for all spectral lines in a given spectral window; extract element - extracts best atomic parameters for all spectral lines of the particular chemical element or ion in a given spectral window; extract stellar - extracts all spectral lines (with their best parameters), which produce significant absorption in a stellar atmosphere with given effective temperature and gravity. The type of the request is indicated by one of the keywords, listed above, placed in the second line of the request. The content of the request depends on its type as described in the following sections. Compulsary parameters are inclosed in angle brackets <...> while optional parameters are put in square brackets [...]. 6. SHOW LINE request -------------------- This request must have the following format: begin request show line , : end request where is the central wavelength of the line in Angstroms. determines the spectral range (it must not exceed 1 Angstrom) from - to + , where VALD will search for the line. and are defined in a conventional way: =1 corresponds to neutral atoms, 2 to singly ionized, etc. Example: begin request # Start the request show line # Select request type 4491.405, 0.02 # Search line between 4491.385 # and 4491.425 Angstroms Fe 2 # The line is formed by singly ionized iron end request # The end of the request The resulting mail from VALD will contain the following table: ============= job.000139 ============= # begin request # Start the request # show line # Select request type # 4491.405, 0.02 # Search line between 4491.385 # # and 4491.425 Angstroms # Fe 2 # The line is formed by singly ionized iron # end request # The end of the request Wavelength window for scan: 0.020 Angstroem. Highest ion number allowed: 5 Maximum excitation potential for lower energy level: 50.000 eV Lines found: Wavelength in A Element/Ion log gf E(low) in eV E(high) in eV Lande: eff. low high gamma.Rad gamma.Stark gamma.VdW terms (low -> high) accuracy (multiplet or comments) database reference for all values ------------------------------------------------------------------------------ 4491.400 ( 0) Fe 2 -2.700 ( 5) 2.855 ( 0) 1.5 5.615 ( 0) 1.5 99.00 ( 0) 99.00 99.00 0.000 ( 0) 0.000 ( 0) 0.000 ( 0) b 4F z 4F* C (37) NBS: Iron 4491.405 ( 2) Fe 2 -2.684 ( 2) 2.856 ( 2) 1.5 5.615 ( 2) 1.5 0.43 ( 2) 0.40 0.45 8.481 ( 2) -6.599 ( 2) -7.946 ( 2) (3F)4 4F (5D)4 4F GFIRON ext. (Ca-Ni) 4000-5000 ------------------------------------------------------------------------------ These data would be combined to the following lines: WL in A El/Ion log(gf) Ei[eV] Ji Ek[eV] Jk gl gam.r gam.s gam.w ------------------------------------------------------------------------------ 4491.405 Fe 2 -2.700 2.856 1.5 5.615 1.5 0.43 8.481 -6.599 -7.946 NBS: Iron ------------------------------------------------------------------------------ 0 in place of a damping parameter and 99 in place of a Lande factor mark the absence of the corresponding data in VALD. The label given after the parameters for each line indicates the source of the data. For the section of SHOW LINE output following 'lines found' all quantities for one line originate from the same source. The last section of SHOWLINE output shows the combination of all sources, as it will appear for all the other types of VALD request. Here the label indicates the source of the gf-value. 7. EXTRACT ALL request ---------------------- This request must have the following format: begin request extract all [long format] [short format] , end request where , are the limits of the spectral interval in Angstroms. Note that VALD limits the total number of lines per single mail to 1000, therefore the actual extraction may end somewhat shorter of . [long format] tells VALD to include an extra line with term designation into the out file. [short format] does not include this line an is the default. Example: begin request # Start of the request extract all # Request type 5700, 5730 # Wavelength range in Angstroms end request # End of the request As the result VALD will mail back to the client VALD-EMS request number, the copy of the request and a subset of spectral lines between 5700 and 5730 Angstroms as shown below: ============= job.000086 ============= # begin request # Start of the request # extract all # Request type # 5700, 5730 # Wavelength range in Angstroms # end request # End of the request Damping parameters Lande Elm Ion WL(A) Excit(eV) log(gf) Rad. Stark Waals factor Reference 'AR 2', 5700.0010, 23.6740, -2.570, 0.000, 0.000, 0.000,99.000,'Bell light: Si to K ' 'FE 1', 5700.1280, 3.3010, -4.948, 7.623,-6.223,-7.870, 0.000,'GFIRON ext. (Ca-Ni) 5000-6000' 'F 1', 5700.1380, 14.6830, -2.550, 0.000, 0.000, 0.000,99.000,'Bell light: F to Al ' 'SC 1', 5700.1640, 1.4330, 0.290, 7.765,-6.129,-7.854, 0.920,'GFIRON ext. (Ca-Ni) 5000-6000' 'MN 2', 5700.2190, 11.0880, -3.078, 8.938,-5.730,-7.737, 1.830,'GFIRON ext. (Ca-Ni) 5000-6000' ............................................................................ The output columns contain element and ionization stage, central wavelength in Angstrom, excitation in electron-Volts, log(gf), 3 damping constants in logarithm (radiative, quadratic Stark and van der Waals) per 4*pi*sec and per perturber at 10000 K (in the case of Stark and van der Waals constants), mean Lande factor and the reference label. Zero in place of the damping parameter and 99 in place of the Lande factor marks the absence of the corresponding data in VALD. The label at the end of each line shows the source of the oscillator strength value. The source of other parameters may be different. The SHOW LINE request may be used to find out all alternative values and their corresponding ranking, assigned by the VALD team. 8. EXTRACT ELEMENT request -------------------------- This request must have the following format: begin request extract element [long format] [short format] , [spectral_number] end request where , are again the limits of the spectral interval in Angstrom. Only the lines formed by in one or all ionization stages will be extracted. [spectral_number] defines the ionization stage: 1 stands for neutral atom, 2 - for singly ionized, etc. Currently VALD includes mostly lines up to the spectral number 5. If [spectral_number] is omitted, the extraction is done for lines up to the four times ionized atom. Example: begin request # Start of the request extract element # Request type 5700, 5730 # Wavelength range in Angstroms Fe 3 # Extract all lines of doubly ionized iron end request # End of the request The mail reply will look similar to the one above, except that only lines of doubly ionized iron are included: ============= job.000087 ============= # begin request # Start of the request # extract element # Request type # 5700, 5730 # Wavelength range in Angstroms # Fe 3 # Extract all lines of doubly ionized iron # end request # End of the request Damping parameters Lande Elm Ion WL(A) Excit(eV) log(gf) Rad. Stark Waals factor Reference 'FE 3', 5701.0710, 25.0490, 0.118, 9.296,-4.877,-7.712, 1.290,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5705.1470, 25.0320, -0.167, 9.360,-4.633,-7.518, 1.390,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5706.4560, 25.4410, -2.858, 8.873,-5.844,-7.715, 1.160,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5711.4150, 25.4410, -1.870, 8.854,-5.976,-7.715, 1.390,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5712.8900, 25.0640, -0.136, 9.299,-4.968,-7.763, 1.140,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5712.9330, 22.5440, 0.078, 9.237,-5.959,-7.764, 0.510,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5713.9810, 25.0350, -0.438, 9.358,-4.633,-7.518, 1.470,'GFIRON ext. (Ca-Ni) 5000-6000' 'FE 3', 5719.7350, 23.5300, -1.819, 9.436,-4.911,-7.594, 1.340,'GFIRON ext. (Ca-Ni) 5000-6000' ............................................................................ 9. EXTRACT STELLAR request -------------------------- This request must have the following format: begin request extract stellar [long format] [short format] , , , [Chemical_composition] ...................... end request where , are again the limits of the spectral interval in Angstrom. Effective temperature and gravity are used to select a solar abundant model atmosphere for estimating the central depth of spectral lines. VALD has the latest models computed by R.Kurucz (Kurucz CDROM 13, June 23, 1993 edition) covering a temperature range from 3500 K to 50000 K and log g from 0. to 5. The chemical composition is set as a log10 of the ratio of atomic number density to the total number of atoms. The default values are solar. The abundance value must be separated from the element name with a column (for example, Fe:-4.7). Several values can be set on the same lines, separated with commas. The request mail can contain as many lines as needed to set the chemical composition. Example: begin request # Start of the request extract stellar # Request type 5700.,5705. # Specify wavelength range in Angstroms, 0.05, 2. # Look for lines reaching more than 0.05 # central depth and use microturbulence of # 2 km/s 8000, 4.5 # Teff and Log g Sr: -4.67, Cr: -3.37, # Setup specific chemical composition Eu: -5.53 end request # End of the request The return mail will contain a table like this: ============= job.000088 ============= # begin request # Start of the request # extract stellar # Request type # 5700.,5705. # Specify wavelength range in Angstroms, # 0.05, 2. # Look for lines reaching more than 0.05 # # central depth and use microturbulence of # # 2 km/s # 8000, 4.5 # Teff and Log g # Sr: -4.67, Cr: -3.37, # Setup specific chemical composition # Eu: -5.53 # end request # End of the request 5700.0000, 5705.0000, 10, 123, Wavelength region, lines selected, lines processed Damping parameters Lande Central Elm Ion WL(A) Excit(eV) Vmct log(gf) Rad. Stark Waals factor depth Reference 'CR 1', 5700.5180, 3.5510, 2.0, -1.440, 7.538,-5.991,-7.845, 1.330, 0.572, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'CR 1', 5700.5500, 3.4490, 2.0, -2.574, 7.812,-6.185,-7.822, 1.120, 0.227, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'S 1', 5700.5800, 7.8680, 2.0, -1.040, 0.000, 0.000, 0.000, 0.000, 0.120, 'Bell light: Si to K ' 'SI 1', 5701.1040, 4.9300, 2.0, -2.050, 8.310,-4.410, 0.000, 0.000, 0.110, 'NLTE lines: Si ' 'CR 2', 5701.4640, 3.8270, 2.0, -3.845, 8.677,-6.611,-7.929, 0.960, 0.649, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'FE 1', 5701.5450, 2.5590, 2.0, -2.216, 8.167,-6.052,-7.840, 1.120, 0.266, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'CR 2', 5701.9090, 6.5780, 2.0, -4.251, 8.431,-6.647,-7.900, 1.200, 0.063, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'CR 1', 5702.3230, 3.4490, 2.0, -0.970, 7.797,-6.171,-7.822, 1.090, 0.638, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'CR 1', 5702.7060, 4.6130, 2.0, -2.089, 8.114,-6.171,-7.840, 1.030, 0.135, 'GFIRON ext. (Ca-Ni) 5000-6000 ' 'CR 1', 5704.1480, 3.1040, 2.0, -3.378, 7.182,-6.205,-7.865, 1.320, 0.095, 'GFIRON ext. (Ca-Ni) 5000-6000 ' '/u2/vald/ems/MODELS/08000g45.krz', 'H : -0.04','HE: -1.05','LI:-10.88','BE:-10.89','B : -9.44','C : -3.48', 'N : -3.99','O : -3.11','F : -7.48','NE: -3.95','NA: -5.71','MG: -4.46', 'AL: -5.57','SI: -4.49','P : -6.59','S : -4.83','CL: -6.54','AR: -5.48', 'K : -6.82','CA: -5.68','SC: -8.94','TI: -7.05','V : -8.04','CR: -3.37', 'MN: -6.65','FE: -4.37','CO: -7.12','NI: -5.79','CU: -7.83','ZN: -7.44', 'GA: -9.16','GE: -8.63','AS: -9.67','SE: -8.69','BR: -9.41','KR: -8.81', 'RB: -9.44','SR: -4.67','Y : -9.80','ZR: -9.54','NB:-10.62','MO:-10.12', 'TC:-20.00','RU:-10.20','RH:-10.92','PD:-10.35','AG:-11.10','CD:-10.18', 'IN:-10.58','SN:-10.04','SB:-11.04','TE: -9.80','I :-10.53','XE: -9.81', 'CS:-10.92','BA: -9.91','LA:-10.82','CE:-10.49','PR:-11.33','ND:-10.54', 'PM:-20.00','SM:-11.04','EU: -5.53','GD:-10.92','TB:-11.94','DY:-10.94', 'HO:-11.78','ER:-11.11','TM:-12.04','YB:-10.96','LU:-11.28','HF:-11.16', 'TA:-11.91','W :-10.93','RE:-11.77','OS:-10.59','IR:-10.69','PT:-10.24', 'AU:-11.03','HG:-10.95','TL:-11.14','PB:-10.19','BI:-11.33','PO:-20.00', 'AT:-20.00','RN:-20.00','FR:-20.00','RA:-20.00','AC:-20.00','TH:-11.92', 'PA:-20.00','U :-12.51','NP:-20.00','PU:-20.00','AM:-20.00','CM:-20.00', 'BK:-20.00','CF:-20.00','ES:-20.00','END' Note that for this request type the output table includes also the microturbulence (Vmct) in km/s and the estimated central line depth relative to continuum. We also provide the name of model atmosphere file in the format g. and the abundances of the first 99 elements. The abundances of three elements have been substituted from the request data. However the model atmosphere used is NOT affected by the change in composition. 10. Errors in VALD ----------------- VALD does not guarantee in any way the absence of errors in the original data, but we are very interested in reducing their number. Therefore we encourage VALD users to send us error reports, so that we can notify other users and attempt to correct the data. Please send your messages to the VALD administrator via e-mail (valdadm@galileo.ast.univie.ac.at) or with a regular mail to the address given below. If data is used for spectroscopic analysis one needs to know about the reliability of the source. The gf-values have to be used with special care. Some of the sources contain data compilations which are updated from time to time without prior warning by their authors (e.g. the BELL lists). There is therefore no way to maintain a quality estimate for EACH individual line in these lists. In addition, some lists (e.g. GFIRON) consist of semiempirically calculated gf-values with a primary focus on completeness of the list rather than the highest possible accuracy. The VALD team will compile a special list for known "wrong" lines. We will enable this compilation to be taken into account for data extraction, too. 11. Using VALD data ------------------- If the VALD data was used in your research work, we would appreciate the acknowledgment of VALD and of the VALD tools that you find most useful. We would also appreciate receiving a preprint or reprint of the relevant papers at the following address: VALD project Institut fuer Astronomie Tuerkenschanzstrasse 17, A-1180 Wien, Austria c/o W.W.Weiss ========================================================================