English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We have selected a sample of 30 normal (non-cD) early type galaxies, for allof which optical spectroscopy is available, and which have been observed withChandra to a depth such to insure the detection of bright low-mass X-raybinaries (LMXBs) with Lx>1e38 erg/s. This sample includes a larger fraction ofgas-poor galaxies than previously studied samples, and covers a wide range ofstellar luminosity, velocity dispersion, GC specific frequency, and stellarage. We derive X-ray luminosities (or upper limits) from the differentsignificant X-ray components of these galaxies: nuclei, detected and undetectedLMXBs, coronally active binaries (ABs), cataclysmic variables (CVs), and hotgas. The ABs and CVs contribution is estimated from the Lx-LK scaling relationof M31 and M32. The contribution of undetected LMXBs is estimated both byfitting the spectra of the unresolved X-ray emission and by extrapolating theLMXB X-ray luminosity function. The results for the nuclei are consistent withthose discussed by Pellegrini (2010). We derive a revised scaling relationbetween the integrated X-ray luminosity of LMXBs in a galaxy and the LKluminosity of the host galaxy: Lx(LMXB)/LK ~ 1e29 erg s-1 LK-1 with 50% 1sigmarms; moreover, we also obtain a tighter LX(LMXB)/LK - SN relation thanpreviously published. We revisit the relations between hot gas content andother galaxy parameters. finding a steeper LX(gas)-LK relation with largerscatter than reported in the literature. We find a positive correlation betweenthe luminosity and temperature of the hot ISM, significantly tighter thanreported by earlier studies.[abridged]

Revisiting with Chandra the Scaling Relations of the X-ray Emission Components (Binaries, Nuclei and Hot Gas) of Early Type Galaxies