Extended Emission-line Regions: Remnants Of Quasar Superwinds?

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

Supermassive black holes have played a fundamental role in the evolution of galaxies. It has been theorized that quasar-driven feedback at high redshift is at least partly responsible for the observed galaxy mass-black hole mass correlation. However, direct observations of the feedback are still lacking. Our observations on the extended nebulae around low-redshift quasars show that recent quasar-driven superwinds have drastically altered their environments. The superwind is capable of ejecting most of the interstellar medium, demonstrating a feedback mode that can efficiently regulate both star formation and black hole growth. Such superwinds provide local analogs of the quasar feedback hypothesized to have happened in the early universe. Studies of these objects thus can provide important insights into this key stage of galaxy evolution. We have discovered a strong preference of the superwinds towards quasars accreting low-metallicity gas. This finding not only has provided the first direct observational evidence that the gas from a merger can indeed be driven to the feeding distance of the central black hole, but has also validated the existence of low-metallicity quasars and placed a key constraint on quasar superwind models.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Extended Emission-line Regions: Remnants Of Quasar Superwinds? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Extended Emission-line Regions: Remnants Of Quasar Superwinds?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended Emission-line Regions: Remnants Of Quasar Superwinds? will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1035383

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.