An Emission-Line Imaging Survey of Early-Type Seyfert Galaxies. I. The Observations

1996 ◽  
Vol 102 ◽  
pp. 309 ◽  
Author(s):  
John S. Mulchaey ◽  
Andrew S. Wilson ◽  
Zlatan Tsvetanov
Keyword(s):  
Emission Line ◽  
Seyfert Galaxies ◽  
Early Type ◽  
Line Imaging

An Emission-Line Imaging Survey of Early-Type Seyfert Galaxies. II. Implications for Unified Schemes

1996 ◽  
Vol 467 ◽  
pp. 197 ◽  
Author(s):  
John S. Mulchaey ◽  
Andrew S. Wilson ◽  
Zlatan Tsvetanov
Keyword(s):  
Emission Line ◽  
Seyfert Galaxies ◽  
Early Type ◽  
Line Imaging

scholarly journals Large-Scale Outflows in Edge-on Seyfert Galaxies. I. Optical Emission-Line Imaging and Optical Spectroscopy

1996 ◽  
Vol 105 ◽  
pp. 75 ◽  
Author(s):  
Edward J. M. Colbert ◽  
Stefi A. Baum ◽  
Jack F. Gallimore ◽  
Christopher P. O'Dea ◽  
Matthew D. Lehnert ◽  
...  
Keyword(s):  
Emission Line ◽  
Optical Spectroscopy ◽  
Large Scale ◽  
Optical Emission ◽  
Seyfert Galaxies ◽  
Line Imaging

Massive early-type emission-line stars: an attempt to distinguish a new group of stellar objects

1995 ◽  
Vol 224 (1-2) ◽  
pp. 519-520 ◽  
Author(s):  
A. S. Miroshnichenko ◽  
Yu. K. Bergner ◽  
D. B. Mukanov ◽  
T. A. Shejkina
Keyword(s):  
Emission Line ◽  
Early Type ◽  
Stellar Objects

scholarly journals The Excitation Mechanism of Emission‐Line Regions in Seyfert Galaxies

1999 ◽  
Vol 521 (2) ◽  
pp. 531-546 ◽  
Author(s):  
Ian Evans ◽  
Anuradha Koratkar ◽  
Mark Allen ◽  
Michael Dopita ◽  
Zlatan Tsvetanov
Keyword(s):  
Emission Line ◽  
Seyfert Galaxies ◽  
Excitation Mechanism

scholarly journals Upper limits on the mass of supermassive black holes from STIS archival data

2007 ◽  
Vol 3 (S245) ◽  
pp. 233-234
Author(s):  
A. Beifiori ◽  
E. M. Corsini ◽  
E. Dalla Bontà ◽  
A. Pizzella ◽  
L. Coccato ◽  
...  
Keyword(s):  
Black Holes ◽  
Emission Line ◽  
Supermassive Black Holes ◽  
Archival Data ◽  
Early Type ◽  
Preliminary Results ◽  
Upper Limits ◽  
Nearby Galaxies ◽  
Line Widths

AbstractThe growth of supermassive black holes (SMBHs) appears to be closely linked with the formation of spheroids. There is a pressing need to acquire better statistics on SMBH masses, since the existing samples are preferentially weighted toward early-type galaxies with very massive SMBHs. With this motivation we started a project aimed at measuring upper limits on the mass of the SMBHs that can be present in the center of all the nearby galaxies (D < 100 Mpc) for which STIS/G750M spectra are available in the HST archive. These upper limits will be derived by modeling the central emission-line widths ([N II] λλ6548, 6583, Hα and [S II] λλ6716, 6731) observed over an aperture of ~01 (R < 50 pc). Here we present our preliminary results for a subsample of 76 bulges.

Emission-line Stars and Early-type Stars with Gaia

2010 ◽  
Vol 45 ◽  
pp. 373-376 ◽  
Author(s):  
R. Blomme ◽  
Y. Frémat ◽  
A. Lobel ◽  
C. Martayan
Keyword(s):  
Emission Line ◽  
Early Type ◽  
Early Type Stars
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