STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class?

Details STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class? STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class?

Jul 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9143p&link_type=abstract

HST Proposal ID #9143

Other

Hst Proposal Id #9143 Agn/Quasars

Scientific paper

Seyfert 2s are distinguished by the absence of the broad emission lines characteristic of Seyfert 1s and more luminous QSOs. Are Seyfert 2s fundamentally different from Seyfert 1s and their brighter cousins? Or is the broad emission line region in Seyfert 2s simply suppressed by obscuring material as postulated by the unification model? If the latter model is correct, the weak broad emission lines in the Seyfert 2s may simply be overwhelmed by starlight from the circumnuclear region, particularly in the case of recent star formation. We propose to determine if all Seyfert 2s have {weak} broad emission line regions by obtaining long-slit STIS spectroscopy for a well-defined sample of 20 Seyfert 2s {3 archival, 17 new}. Compared to previous ground-based spectroscopy, the HST/STIS angular resolution of 0arcs1 provides a 10* increase in spatial resolution and a 20-50* increase in contrast between the active nucleus and surrounding starlight. Medium- resolution spectra around HAlpha will be used to search for broad HAlpha emission. Low-resolution blue spectra {2900- 5700A} will be used to quantify the nuclear and extranuclear contributions from hot stars or other sources to the featureless continuum, and measure emission lines. If we detect broad lines in the large majority of the Seyfert 2s by using STIS to avoid most of the circumnuclear starlight, it will effectively eliminate the Seyfert 2 class.

Affiliated with

Also associated with

No associations

Rating

STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class? 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 STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and STIS Spectrophotometry of Nearby Seyfert 2 Nuclei: Can we eliminate the Seyfert 2 class? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1200585