Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Douglas O. Richstone"'
Autor:
Kayhan Gültekin, Karl Gebhardt, John Kormendy, Adi Foord, Ralf Bender, Tod R. Lauer, Jason Pinkney, Douglas O. Richstone, Scott Tremaine
Publikováno v:
The Astrophysical Journal, Vol 974, Iss 1, p 16 (2024)
We present infrared photometry and Hubble Space Telescope imaging and spectroscopy of the Sab galaxy NGC 4826. Schwarzschild dynamical modeling is used to measure its central black hole mass M . Photometric decomposition is used to enable a compariso
Externí odkaz:
https://doaj.org/article/84f59d98181140999f21beb01c9c08c8
Autor:
Jonelle L. Walsh, Kayhan Gültekin, Karl Gebhardt, Remco C. E. van den Bosch, Akın Yıldırım, Bernd Husemann, Douglas O. Richstone
Mrk 1216 is a nearby, early-type galaxy with a small effective radius of 2.8 kpc and a large stellar velocity dispersion of 308 km/s for its K-band luminosity of 1.4x10^11 L_sun. Using integral-field spectroscopy assisted by adaptive optics from Gemi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e42b67305508b5300758babd3ee995b8
Autor:
Alexei V. Filippenko, Jason Pinkney, Scott Tremaine, Ralf Bender, Alan Dressler, Christos Siopis, Luis C. Ho, Gary Bower, Douglas O. Richstone, Sandra M. Faber, Karl Gebhardt, Richard F. Green, Tod R. Lauer, Monique Aller, John Kormendy
Publikováno v:
The Astrophysical Journal. 671:1321-1328
The largest galaxies, and in particular central galaxies in clusters, offer unique insight into understanding the mechanism for the growth of nuclear black holes. We present Hubble Space Telescope kinematics for NGC1399, the central galaxy in Fornax.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::546b63e6bfd8135153e67702c52df263
https://doi.org/10.1086/522938
https://doi.org/10.1086/522938
Publikováno v:
The Astrophysical Journal. 670:249-260
Programs to observe evolution in the Mbh-sigma or Mbh-L relations typically compare black-hole masses, Mbh, in high-redshift galaxies selected by nuclear activity to Mbh in local galaxies selected by luminosity L, or stellar velocity dispersion sigma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d1640a28cc12875169df9026fe4469a
https://doi.org/10.1086/522083
https://doi.org/10.1086/522083
Autor:
Scott Tremaine, Ralf Bender, John Kormendy, Monique Aller, Tod R. Lauer, Douglas O. Richstone, Sandra M. Faber, Richard E. Green, Karl Gebhardt, Alan Dressler, Luis C. Ho, Alexei V. Filippenko
Publikováno v:
The Astrophysical Journal. 664:226-256
We combine the results from several HST investigations of the central structure of early-type galaxies to generate a large sample of parameterized surface photometry. The studies included were those that used the "Nuker law" to characterize the inner
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42040da0b87a851bc8162ad6440c07c3
https://doi.org/10.1086/519229
https://doi.org/10.1086/519229
Autor:
Douglas O. Richstone, Jonelle L. Walsh, Akın Yıldırım, Karl Gebhardt, Remco C. E. van den Bosch, Kayhan Gültekin, Bernd Husemann
Located in the Perseus cluster, NGC 1271 is an early-type galaxy with a small effective radius of 2.2 kpc and a large stellar velocity dispersion of 276 km/s for its K-band luminosity of 8.9x10^{10} L_sun. We present a mass measurement for the black
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c56723b72a4f1090930b774c387bbb7
Autor:
Matthias Dietrich, Kelly D. Denney, Matthew G. Walker, Christopher A. Onken, V. I. Pronik, Edward M. Cackett, Sergey G. Sergeev, Himel Ghosh, Richard W. Pogge, Yuzuru Yoshii, Douglas O. Richstone, Takeo Minezaki, Jeffrey K. J. Fogel, Misty C. Bentz, Keith Horne, Marianne Vestergaard, Bradley M. Peterson, Charles A. Kuehn
Publikováno v:
Denney, K D, Bentz, M C, Peterson, B M, Pogge, R W, Cackett, E M, Dietrich, M, Fogel, J K J, Ghosh, H, Horne, K, Kuehn, C, Minezaki, T, Onken, C A, Pronik, V I, Richstone, D O, Sergeev, S G, Vestergaard, M, Walker, M G & Yoshii, Y 2006, ' The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping ', Astrophysical Journal, vol. 653, no. 1, 152 . https://doi.org/10.1086/508533
We present new observations leading to an improved black hole mass estimate for the Seyfert 1 galaxy NGC 4593 as part of a reverberation-mapping campaign conducted at the MDM Observatory. Cross-correlation analysis of the H_beta emission-line light c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4db761747a563eafa9492f0727cdd22
https://doi.org/10.1086/508533
https://doi.org/10.1086/508533
Autor:
John Kormendy, Bruce E. Woodgate, Jens Thomas, Ralf Bender, Donna Weistrop, Charles H. Nelson, Tod R. Lauer, Theodore R. Gull, J. B. Hutchings, Anthony C. Danks, Douglas O. Richstone, Richard F. Green, Gary Bower, Charles L. Joseph, M. E. Kaiser
Publikováno v:
The Astrophysical Journal. 631:280-300
We present HST spectroscopy of the nucleus of M31 obtained with STIS. Spectra taken around the CaT lines at 8500 see only the red giants in the double bright- ness peaks P1 and P2. In contrast, spectra taken at 3600-5100 A are sensitive to the tiny b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d8ab3b74e451a0afd045ebfcf3f42ac
https://doi.org/10.1086/432434
https://doi.org/10.1086/432434
Autor:
Sandra M. Faber, Karl Gebhardt, Alan Dressler, John Kormendy, Monique Aller, Douglas O. Richstone, Luis C. Ho, Richard F. Green, Christos Siopis, Tod R. Lauer, John Magorrian, Jason Pinkney, Edward A. Ajhar, Alexei V. Filippenko, Scott Tremaine, Ralf Bender, Carl J. Grillmair
Publikováno v:
The Astronomical Journal. 129:2138-2185
We present observations of 77 early-type galaxies imaged with the PC1 CCD of the Hubble Space Telescope (HST) WFPC2. "Nuker-law" parametric fits to the surface brightness profiles are used to classify the central structure into "core" or "power-law"
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5ad6443207f7fe384c638ea6ae33339
https://doi.org/10.1086/429565
https://doi.org/10.1086/429565
Publikováno v:
The Astrophysical Journal. 591:125-137
Motivated by the observed correlation between black hole masses $\mbh$ and the velocity dispersion $\sigma$ of host galaxies, we develop a theoretical model of black hole formation in galactic bulges (this paper generalizes an earlier ApJ Letter). Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5102e6f847a4c1b27da380875179461a
https://doi.org/10.1086/375340
https://doi.org/10.1086/375340