HST/STIS Spectroscopy of 3C 273
| dc.creator | Heap, S. R. | |
| dc.creator | Williger, G. M. | |
| dc.creator | Dave, R. | |
| dc.creator | Weymann, R. J. | |
| dc.creator | Jenkins, E. B. | |
| dc.creator | Tripp, T. M. | |
| dc.date | 2001-09-06 | |
| dc.date.accessioned | 2026-07-07T01:59:52Z | |
| dc.date.available | 2026-07-07T01:59:52Z | |
| dc.description | We present preliminary results on the low-redshift Lyman alpha forest as based on STIS spectra of 3C 273. A total of 121 intergalactic Lyman alpha-absorbing systems were detected, of which 60 are above the 3.5 sigma completness limit, log N(HI)~12.3. The median Doppler parameter, b=27 km/s, is similar to that seen at high redshift. However the distribution of HI column densities (dN/dN(HI) propto N(HI)^-beta) has a steeper slope, beta = 2.02 +- 0.21, than is seen at high redshift. Overall, the observed N(HI)-b distribution is consistent with that derived from a Lambda CDM hydrodynamic simulation. | |
| dc.description | in "Extragalactic Gas at Low Redshfit", ASP Conf. Series, J. Mulchaey & J. Stocke, eds.; includes newpasp.sty | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0109100 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0109100 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/3287 | |
| dc.subject | Astrophysics | |
| dc.title | HST/STIS Spectroscopy of 3C 273 | |
| dc.type | text |