The pervasiveness of O 6 absorption lines, coupled with complementary observations of a diffuse background in soft X-rays and EUV radiation, shows that there is an extensive network of low density gas (n approx. Observations of these features which have been very influential in revising the perception of the medium's various physical states, are discussed. In the ultraviolet spectra of hot stars, absorption lines can be seen from highly ionized species in the interstellar medium. Observations of Absorption Lines from Highly Ionized Atoms The amount of observable emission and polarization expected to be produced by the BAL clouds from resonance line scattering and collisional excitation is considered in This suggests that possibly all, but not less than 15 percent, of the QSOs have BAL clouds associated with them. By considering the observed percentage of QSOs with BALs and resonance line scattering models, it is found that the absorption covering factor in BAL QSOs is between 3 and 20 percent. Also, photoionization models, which utilize solar abundances and take the ionizing continuum to be a simple power law, are incapable of explaining the level of ionization in the BAL clouds. Therefore, if the BAL clouds give rise to observable emission, the generally adopted (optically thick, single component) model for the emission line region must be incorrect. The BAL clouds are incapable of accounting for all of the observed broad emission lines, particularly C III} (lamda)1909 and Mg II (lamda)2798. The distribution of multiplicities for isolated absorption troughs suggests that the large -scale spatial distribution of BAL clouds is non-random, possibly described by a disk geometry. For example, N V emission is generally stronger in BAL QSOs and the emission near C III} (lamda)1909 is generally broader in BAL QSOs. The emission line properties of BAL QSOs appear to be different from those of non-BAL QSOs. The minimum total absorption column densities are 10('20) to 10('22) cm('-2). Outflow velocities up to 40,000 km s(' -1) are observed. The BALs exhibit a variety of velocity structures, from seemingly smooth, continuous absorption to complexes of individual absorption lines. Broad absorption lines (BALs) are probably present in 3 to 10 percent of the spectra of moderate to high redshift QSOs. The following major conclusions are reached. Spectroscopic observations of fourteen broad absorption line (BAL) QSOs are presented and analyzed. 2.3.Broad Absorption Lines in Qsos: Observations and Implications for Models. If you are interested, I have both original 2.3.5 (with Dale and Theme included) and nightly community build from 2015 on my dropbox. It was hosted as git repository but it seems gone (or my reasearch skills are really bad currently, it's 1:30 AM here). Use Notepad++, Sublime Text, or any sensible text editor instead.Įdit3: It's hard to find ToME 2.3.5 and modules currently. You can't create true variant in this way, but definitely you can adapt this game for your desires.Įdit: If I would have to chose my favorite variant ever, I'd hesistate about NPP Angband, Tome 2.3.5 and First Age AngbandĮdit2: If you would like to tinker with vanilla angband text files, and you are using Windows, I'd suggest to not use standard Notepad - it doesn't support some escape codes, so these txt files looks really messy on Notepad. It's great because all datas are stored in txt files and it's really easy to add new weapons, monsters, races, classes, etc. To be honest, it isn't on my top Angband games, but it's worth mentioning due to releasing 4.x.x version in 2015.
I like how it's developed :DĪlso, I'd like to mention vanilla Angband. Also, I really like PosChengband - it has great world / fluff / atmosphere and. Sil is great due to achieving totally different, no-grind and tactical gameplay, but keeping all most characteristic features of Angband. Hengband is a bit strange variant - it seems be close to vanilla (more than more, say, eccentric variants), but with tons new features and new classes with really interesting mechanics (but with cost of fluff, hengband is not very immersive - or coherent - game).
UnAngband is set in Middle-Earth and it is really great game, with interesting, say, world system. I used to coming back to Tome 2.3.5 due to many reasons (.mostly that there are two truly great mods: Dale and, especially, Theme). If I want to feel that I live (and I'm wandering throguht mountains, forests, etc.) in this world, I'm playing First Age Angband. So, if I want to play something like improved vanilla, I'd play NPP Angband. Variants provide huge variety of gameplay, so sometimes I'd play one variant, sometimes another.