Scientific Commons: Alessandro Capetti

An optical spectroscopic survey of the 3CR sample of radio galaxies with z (2009)

Buttiglione, Sara, Capetti, Alessandro, Celotti, Annalisa, Axon, David J., Chiaberge, Marco, Macchetto, F. Duccio, ...

We use the emission line measurements of 3CR radio sources with redshift < 0.3, to explore their spectroscopic properties. The 3CR sources show a bimodal distribution of Excitation Index, a new...

Radio and spectroscopic properties of miniature radio galaxies: revealing the bulk of the radio-loud AGN population (2009)

Baldi, Ranieri D., Capetti, Alessandro

We explore radio and spectroscopic properties of a sample of 14 miniature radio galaxies, i.e. early-type core galaxies hosting radio-loud AGN of extremely low radio power, 10^(27-29) erg s^(-1)...

A VLA radio-survey of early-type galaxies in the Virgo cluster (2009)

Capetti, Alessandro, Kharb, Preeti, Axon, David J., Merritt, David, Baldi, Ranieri D.

We present the results of a 8.4 GHz Very Large Array radio survey of early-type galaxies extracted from the ACS Virgo Cluster Survey. The aim of this survey is to investigate the origin of radio...

HST/ACS Emission Line Imaging of Low Redshift 3CR Radio Galaxies I: The Data (2009)

Tremblay, Grant R., Chiaberge, Marco, Sparks, William B., Baum, Stefi A., Allen, Mark G., Axon, David J., ...

We present 19 nearby (z

Low-power Radio Galaxies in the Distant Universe: A search for FRI at 1 (2009)

Chiaberge, Marco, Tremblay, Grant, Capetti, Alessandro, Macchetto, F. Duccio, Tozzi, Paolo, Sparks, William B.

We present a search for FRI radio galaxies between 1 < z < 2 in the COSMOS field. In absence of spectroscopic redshift measurements, the selection method is based on multiple steps which make use of...

An optical spectroscopic survey of the 3CR sample of radio galaxies with z (2009)

Buttiglione, Sara, Capetti, Alessandro, Celotti, Annalisa, Axon, David J., Chiaberge, Marco, Macchetto, F. Duccio, ...

We present a homogeneous and 92 % complete dataset of optical nuclear spectra for the 113 3CR radio sources with redshifts < 0.3, obtained with the Telescopio Nazionale Galileo. For these sources we...

An optical spectroscopic survey of the 3CR sample of radio galaxies with z (2009)

Buttiglione, Sara, Capetti, Alessandro, Celotti, Annalisa, Axon, David J., Chiaberge, Marco, Macchetto, F. Duccio, ...

We present a homogeneous and 92 % complete dataset of optical nuclear spectra for the 113 3CR radio sources with redshifts < 0.3, obtained with the Telescopio Nazionale Galileo. For these sources we...

Optical spectroscopy of 3CR sample of radio sources at z (2008)

Buttiglione, Sara, Capetti, Alessandro, Celotti, Annalisa

We are carrying out a program of optical spectroscopy of the complete subsample of the 3CR catalog of radio sources at redshift z < 0.3. The sample consists of 113 3CR sources, comprising FR I, FR II...

Recent star formation in nearby 3CR radio-galaxies from UV HST observations (2008)

Baldi, Ranieri D., Capetti, Alessandro

We analyzed HST images of 31 nearby (z

HST NIR Snapshot survey of 3CR radio source counterparts II: An atlas and inventory of the Host Galaxies, Mergers and Companions (2008)

Axon, David, Baum, Stefi, Capetti, Alessandro, Chiaberge, Marco, Macchetto, Duccio, Madrid, Juan, ...

Also archived in: arXiv:0712.0595 v2 11 Jul 2008

The accretion mechanism in low-power radio galaxies (2008)

Balmaverde, Barbara, Baldi, Ranieri D., Capetti, Alessandro

We study a sample of 44 low-luminosity radio-loud AGN, which represent a range of nuclear radio-power spanning 5 orders of magnitude, to unveil the accretion mechanism in these galaxies. We estimate...

Measuring supermassive black holes with gas kinematics - II. The LINERs IC 989, NGC 5077, and NGC 6500 (2007)

De Francesco, Giovanna, Capetti, Alessandro, Marconi, Alessandro

We present results from a kinematical study of the gas in the nucleus of a sample of three LINER galaxies, obtained from archival HST/STIS long-slit spectra. We found that, while for the elliptical...

HST NIR Snapshot Survey of 3CR Radio Source Counterparts II: An Atlas and Inventory of the Host Galaxies, Mergers and Companions (2007)

Floyd, David J. E., Axon, David, Baum, Stefi, Capetti, Alessandro, Chiaberge, Marco, Macchetto, Duccio, ...

We present the second part of an H-band (1.6 microns) atlas of z

RevMexAA (Serie de Conferencias), 13, 163--169 (2002) (2007)

The Hst View, Alessandro Capetti

HST observations provided us with the spatial resolution required to explore in detail the properties of the Narrow Line Region of Seyfert galaxies. In Seyferts with extended radio structures the HST...

RevMexAA (Serie de Conferencias), 13, 163-169 (2002) (2007)

The Hst View, Alessandro Capetti

HST observations provided us with the spatial resolution required to explore in detail the properties of the Narrow Line Region of Seyfert galaxies. In Seyferts with extended radio structures the HST...

On the nature of optical nuclei in FR I radio-galaxies from ACS/HST imaging polarimetry (2007)

Capetti, Alessandro, Axon, David J., Chiaberge, Marco, Sparks, William B., Macchetto, F. Duccio, Cracraft, Misty, ...

We obtained optical imaging polarimetry with the ACS/HRC aboard the HST of the 9 closest radio-galaxies in the 3C catalogue with an FR I morphology. The nuclear sources seen in direct HST images in...

On the nature of optical nuclei in FR I radio-galaxies from ACS/HST imaging polarimetry (2007)

Capetti, Alessandro, Axon, David, Chiaberge, Marco, Sparks, William, Macchetto, Ferdinando, Cracraft, Misty, ...

Also archived in: arXiv:0706.1944 v1 Jun 13 2007

Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 4303 and NGC 4258⋆ (2007)

Pastorini, Guia, Marconi, Alessandro, Capetti, Alessandro, Axon, David, Alonso-Herrero, Almudena, Atkinson, John, ...

Also archived in: arXiv:astro-ph/0703149 v1 Mar 7 2007

On the nature of optical nuclei in FR I radio-galaxies from ACS/HST imaging polarimetry (2007)

Capetti, Alessandro, Axon, David J., Chiaberge, Marco, Sparks, William B., Macchetto, F. Duccio, Cracraft, Misty, ...

We obtained optical imaging polarimetry with the ACS/HRC aboard the HST of the 9 closest radio-galaxies in the 3C catalogue with an FR I morphology. The nuclear sources seen in direct HST images in...

Isophotal Structure and Dust Distribution in Radio-Loud Elliptical Galaxies (2007)

Tremblay, Grant R., Chiaberge, Marco, Donzelli, Carlos J., Quillen, Alice C., Capetti, Alessandro, Sparks, William B., ...

We investigate isophotal properties and dust morphology in the nuclear regions of 84 radio galaxies, imaged in the optical and near-infrared as part of Hubble Space Telescope snapshot surveys. We...

The host galaxy/AGN connection. Brightness profiles of early-type galaxies hosting Seyfert nuclei (2007)

Capetti, Alessandro, Balmaverde, Barbara

[ABRIDGED] We recently presented evidence of a connection between the brightness profiles of nearby early-type galaxies and the properties of the AGN they host. The radio loudness of the AGN appears...

Supermassive black holes in the Sbc spiral galaxies NGC 3310, NGC 4303 and NGC 4258 (2007)

Pastorini, Guia, Marconi, Alessandro, Capetti, Alessandro, Axon, David J., Alonso-Herrero, Almudena, Atkinson, John, ...

We present new Space Telescope Imaging Spectrograph (STIS) observations of three spiral galaxies, NGC 4303, NGC 3310 and NGC 4258. The bright optical emission lines H$\alpha$ $\lambda$ $6564 \AA$,...

Bulges and disks in the Host Galaxies of low redshift 3CR Sources: a near-IR view of their radial brightness profile (2006)

Donzelli, Carlos J., Chiaberge, Marco, Macchetto, F. Duccio, Madrid, Juan P., Capetti, Alessandro, Marchesini, Danilo

We analyze the near-infrared luminosity profiles and photometric parameters of the host galaxies of 3CR radio sources with z

Measuring supermassive black holes with gas kinematics: the active S0 galaxy NGC 3998 (2006)

De Francesco, Giovanna, Capetti, Alessandro, Marconi, Alessandro

We present results from a kinematical study of the gas in the nucleus of the active S0 galaxy NGC 3998 obtained from archival HST/STIS long-slit spectra. We analyzed the emission lines profiles and...

The hst view of the narrow line region of seyfert galaxies (2006)

Alessandro Capetti

The hst view of the narrow line region of seyfert galaxies

Optical Polarimetry of the Jets of Nearby Radio Galaxies: I. The Data (2006)

Perlman, Eric S., Padgett, C. A., Georganopoulos, Markos, Sparks, William B., Biretta, John A., O'Dea, Christopher P., ...

We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-resolution optical...

Optical polarimetry of the jets of nearby radio galaxies: I. The Data (2006)

Perlman, Eric, Padgett, Alex, Georganopoulos, Markos, Sparks, William, Biretta, John, O'Dea, Christopher, ...

Archived in: arXiv:astro-ph/0606119 v1 6 Jun 2006

Optical polarimetry of the jets of nearby radio galaxies: I. The data (2006)

Perlman, Eric, Padgett, Alex, Georganopoulos, Markos, Sparks, William, Biretta, John, O'Dea, Christopher, ...

Archived in: arXiv:astro-ph/0606119 v1 6 Jun 2006

Streaming motions towards the supermassive black hole in NGC 1097 (2006)

Fathi, Kambiz, Storchi-Bergmann, Thaisa, Riffel, Rogemar, Winge, Claudia, Axon, David, Robinson, Andrew, ...

Also archived in: arXiv:astro-ph/0602002 v1 31 Jan 2006

Streaming motions towards the supermassive black hole in NGC 1097 (2006)

Fathi, Kambiz, Storchi-Bergmann, Thaisa, Riffel, Rogemar, Winge, Claudia, Axon, David, Robinson, Andrew, ...

Also archived in: arXiv:astro-ph/0602002 v1 31 Jan 2006

The host galaxy/AGN connection in nearby early-type galaxies. A new view of the origin of the radio-quiet/radio-loud dichotomy? (2006)

Capetti, Alessandro, Balmaverde, Barbara

[ABRIDGED] This is the third in a series of three papers exploring the connection between the multiwavelength properties of AGN in nearby early-type galaxies and the characteristics of their hosts....

Hubble Space Telescope Near-Infrared Snapshot Survey of 3CR radio source counterparts at low redshift (2006)

Madrid, Juan P., Chiaberge, Marco, Floyd, David, Sparks, William B., Macchetto, Duccio, Miley, George K., ...

We present newly acquired images of the near-infrared counterpart of 3CR radio sources. All the sources were selected to have a redshift of less than 0.3 to allow us to obtain the highest spatial...

The Supermassive black hole in Centaurus A: A Benchmark for gas kinematical measurements (2006)

Marconi, Alessandro, Pastorini, Guia, Pacini, Franco, Axon, David, Capetti, Alessandro, Macchetto, Duccio, ...

Also archived in: arXiv:astro-ph/0507435 v3 10 Nov 2005

The supermassive black hole in Centaurus A: A Benchmark for gas kinematical measurements (2006)

Marconi, Alessandro, Pastorini, Guia, Pacini, Franco, Axon, David, Capetti, Alessandro, Macchetto, Duccio, ...

Also archived in: arXiv:astro-ph/0507435 v3 10 Nov 2005

An optical-IR jet in 3C133 (2006)

Floyd, David J. E., Laing, Robert, Chiaberge, Marco, Perlman, Eric, Sparks, William, Macchetto, Duccio, ...

We report the discovery of a new optical-IR synchrotron jet in the radio galaxy 3C133 from our HST/NICMOS snapshot survey. The jet and eastern hotspot are well resolved, and visible at both optical...

Streaming Motions Towards the Supermassive Black Hole in NGC 1097 (2006)

Fathi, Kambiz, Storchi-Bergmann, Thaisa, Riffel, Rogemar A., Winge, Claudia, Axon, David J., Robinson, Andrew, ...

We have used GMOS-IFU and high resolution HST-ACS observations to map, in unprecedented detail, the gas velocity field and structure within the 0.7 kpc circumnuclear ring of the SBb LINER/Seyfert 1...

The Warped nuclear disk of radio galaxy 3C 449 (2006)

Tremblay, Grant, Quillen, Alice, Floyd, David, Noel-Storr, Jacob, Baum, Stefi A., Axon, David, ...

Also archived in: arXiv:astro-ph/0510650 v3 25 Jan 2006

The warped nuclear disk of radio galaxy 3C 449 (2006)

Tremblay, Grant, Quillen, Alice, Floyd, David, Noel-Storr, Jacob, Baum, Stefi, Axon, David, ...

Also archived in: arXiv:astro-ph/0510650 v3 25 Jan 2006

Optical polarimetry of the jets of nearby radio galaxies. I. The data (2006)

Perlman, Eric S., Padgett, C. A., Georganopoulos, Markos, Sparks, William B., Biretta, John A., O'Dea, Christopher P., ...

We present an overview of new HST imaging polarimetry of six nearby radio galaxies with optical jets. These observations triple the number of extragalactic jets with subarcsecond-resolution optical...

Hubble Space Telescope near-infrared snapshot survey of 3CR radio source counterparts at low redshift (2005)

Madrid, Juan, Chiaberge, Marco, Floyd, David, Sparks, William, Macchetto, Duccio, Miley, George, ...

Archived in: arXiv:astro-ph/0603239 v1 9 Mar 2006

Hubble Space Telescope near-infrared snapshot survey of 3CR radio source counterparts at low redshift (2005)

Madrid, Juan, Chiaberge, Marco, Floyd, David, Sparks, William, Macchetto, Duccio, Miley, George, ...

Archived in: arXiv:astro-ph/0603239 v1 9 Mar 2006

The Warped Nuclear Disk of Radio Galaxy 3C 449 (2005)

Tremblay, Grant R., Quillen, Alice C., Floyd, David J. E., Noel-Storr, Jacob, Baum, Stefi A., Axon, David, ...

Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio source 3C 449 is an outlier to this...

The host galaxy/AGN connection in nearby early-type galaxies. Sample selection and hosts brightness profiles (2005)

Capetti, Alessandro, Balmaverde, Barbara

This is the first of a series of three papers exploring the connection between the multiwavelength properties of AGNs in nearby early-type galaxies and the characteristics of their hosts. We selected...

Integral field spectroscopy of 23 spiral bulges (2005)

Batcheldor, Dan, Axon, David, Merritt, David, Hughes, M., Marconi, Alessandro, Binney, James, ...

Also archived In: astro-ph/0504660 v1 29 Apr 2005

The infrared-dominated jet of 3C401 (2005)

Chiaberge, Marco, Sparks, William, Macchetto, Duccio, Perlman, Eric, Capetti, Alessandro, Balmaverde, Barbara, ...

Also archived in: arXiv:astro-ph/0505034 v2 16 May 2005

The infrared-dominated jet of 3C401 (2005)

Chiaberge, Marco, Sparks, William, Macchetto, Duccio, Perlman, Eric, Capetti, Alessandro, Balmaverde, Barbara, ...

Also archived in: arXiv:astro-ph/0505034 v2 16 May 2005

Nuclear properties of nearby spiral galaxies from Hubble Space Telescope NICMOS imaging and STIS [Space Telescope Imaging Spectrograph] spectroscopy (2005)

Hughes, MA, Axon, David, Atkinson, John, Alonso-Herrero, Almudena, Scarlata, Claudia, Marconi, Alessandro, ...

Also archived in: arXiv:astro-ph/0503693 v1 31 Mar 2005

Nuclear properties of nearby spiral galaxies from Hubble Space Telescope NICMOS imaging and STIS [Space Telescope Imaging Spectrograph] spectroscopy (2005)

Hughes, M., Axon, David, Atkinson, John, Alonso-Herrero, Almudena, Scarlata, Claudia, Marconi, Alessandro, ...

Also archived in: arXiv:astro-ph/0503693 v1 31 Mar 2005

HST [Hubble Space Telescope]/STIS [Space Telescope Imaging Spectrograph] low dispersion spectroscopy of three Compact Steep Spectrum sources: Evidence for jet-cloud interaction (2005)

Labiano, Alvaro, O'Dea, Christopher, Gelderman, Richard, De Vries, Wim, Axon, David, Barthel, Peter, ...

Also archived in: arXiv:astro-ph/0504330 v1 14 Apr 2005

HST [Hubble Space Telescope]/STIS [Space Telescope Imaging Spectrograph] low dispersion spectroscopy of three Compact Steep Spectrum sources: Evidence for jet-cloud interaction (2005)

Labiano, Alvaro, O'Dea, Christopher, Gelderman, Richard, De Vries, Wim, Axon, David, Barthel, Peter, ...

Also archived in: arXiv:astro-ph/0504330 v1 14 Apr 2005

The infrared-dominated jet of 3C401 (2005)

Chiaberge, Marco, Sparks, William. B., Macchetto, F. Duccio, Perlman, Eric, Capetti, Alessandro, Balmaverde, Barbara, ...

We present a Hubble Space Telescope image of the FRII radio galaxy 3C 401, obtained at 1.6 microns with the NICMOS camera in which we identify the infrared counterpart of the brightest region of the...

Supermassive black hole mass measurements for NGC 1300 and NGC 2748 based on HST [Hubble Space Telescope] emission-line gas kinematics (2005)

Atkinson, John, Collett, JL, Marconi, Alessandro, Axon, David, Alonso-Herrero, Almudena, Batcheldor, Dan, ...

Also archived in: arXiv:astro-ph/0502573 v1 28 Feb 2005

Supermassive black hole mass measurements for NGC 1300 and NGC 2748 based on HST [Hubble Space Telescope] emission-line gas kinematics (2005)

Atkinson, John, Collett, J., Marconi, Alessandro, Axon, David, Alonso-Herrero, Almudena, Batcheldor, Dan, ...

Also archived in: arXiv:astro-ph/0502573 v1 28 Feb 2005

The HST view of the nuclear emission line region in low luminosity radio-galaxies (2005)

Capetti, Alessandro, Kleijn, Gijs Verdoes, Chiaberge, Marco

We study the properties of the emission line regions in two samples of low luminosity radio-galaxies (LLRG), focusing on the compact emission line region (CELR) revealed to be a characteristic...

The supermassive black hole in the Seyfert 2 galaxy NGC 5252 (2005)

Capetti, Alessandro, Marconi, Alessandro, Macchetto, Duccio

Also archived in: arXiv:astro-ph/0411081 v1 3 Nov 2004

The HST view of LINERs nuclei: evidence for a dual population? (2005)

Chiaberge, Marco, Capetti, Alessandro, Macchetto, F. Duccio

We study a complete and distance-limited sample of 25 LINERs, 21 of which have been imaged with the Hubble Space Telescope. In nine objects we detect an unresolved nucleus. In order to study their...

Probing the nuclear obscuration in radio-galaxies with near infrared imaging (2005)

Marchesini, Danilo, Capetti, Alessandro, Celotti, Annalisa

We present the first near-infrared (K'-band) homogeneous observations of a complete sub-sample of the 3CR radio catalogue comprising all High Excitation Galaxies (HEGs) at z

Probing the nuclear obscuration in radio-galaxies with near infrared imaging (2004)

Marchesini, Danilo, Capetti, Alessandro, Celotti, Annalisa

We present the first near-infrared (K'-band) homogeneous observations of a complete sub-sample of the 3CR radio catalogue comprising all High Excitation Galaxies (HEGs) at z

The supermassive black hole in the Seyfert 2 galaxy NGC 5252 (2004)

Capetti, Alessandro, Marconi, Alessandro, Macchetto, Duccio, Axon, David

We present results from HST/STIS long-slit spectroscopy of the gas motions in the nuclear region of the Seyfert 2 galaxy NGC 5252. The observed velocity field is consistent with gas in regular...

The supermassive black hole in the Seyfert 2 galaxy NGC 5252 (2004)

Capetti, Alessandro, Marconi, Alessandro, Macchetto, Duccio, Axon, David

Also archived in: arXiv:astro-ph/0411081 v1 3 Nov 2004

Nuclear properties of a sample of nearby spirals from STIS [Space Telescope Imaging Spectrograph] imaging (2004)

Scarlata, Claudia, Stiavelli, Massimo, Hughes, M, Axon, David, Alonso-Herrero, Almudena, Atkinson, John, ...

Also archived in: arXiv:astro-ph/0408435 v1 24 Aug 2004

Nuclear properties of a sample of nearby spirals from STIS [Space Telescope Imaging Spectrograph] imaging (2004)

Scarlata, Claudia, Stiavelli, Massimo, Hughes, M., Axon, David, Alonso-Herrero, Almudena, Atkinson, John, ...

Also archived in: arXiv:astro-ph/0408435 v1 24 Aug 2004

The nuclear radio-optical properties of intermediate redshift FRII radio galaxies and quasars (2004)

Varano, Stefania, Chiaberge, Marco, Macchetto, F. Duccio, Capetti, Alessandro

We extend the study of the nuclei of 3CR objects as seen with the HST to higher redshift FR II radio sources (0.4

The nuclear SED of NGC6251: a BL Lac in the center of an FR I radio galaxy (2003)

Chiaberge, Marco, Gilli, Roberto, Capetti, Alessandro, Macchetto, F. Duccio

We determine the nuclear spectral energy distribution (SED) from the radio to the gamma-ray band for the FR I radio galaxy NGC6251, by using both data from the literature and analyzing HST and X-ray...

Is there really a black hole at the center of NGC 4041? - Constraints from gas kinematics (2003)

Marconi, Alessandro, Axon, David, Capetti, Alessandro, Maciejewski, Witold, Atkinson, John, Batcheldor, Dan, ...

Also archived in: arXiv:astro-ph/0211650 v1 29 Nov 2002

A multi-wavelength test of the FR I-BL Lac unifying model (2003)

Trussoni, E., Capetti, Alessandro, Celotti, Annalisa, Chiaberge, Marco, Feretti, L.

We collect multi-wavelength measurements of the nuclear emission of 20 low luminosity FR I radio-galaxies to test the viability of the FR I - BL Lac unifying model. Although poorly sampled, the...

Understanding the nature of FRII optical nuclei: a new diagnostic plane for radio galaxies (2002)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

We extend our study of the nuclei of 3CR FR II radio galaxies through HST optical images up to z=0.3. In the majority of them an unresolved nucleus (central compact core, CCC) is found. We analyze...

What do HST and Chandra tell us about the jet and the nuclear region of the radio galaxy 3C270? (2002)

Chiaberge, Marco, Gilli, Roberto, Macchetto, F. Duccio, Sparks, William B., Capetti, Alessandro

The HST/STIS ultraviolet image of the FR I radio galaxy 3C270 shows the presence of a jet-like structure emerging from the position of the nucleus. This feature, which represents the first jet-like...

Jet triggered Type Ia supernovae in radio-galaxies? (2002)

Capetti, Alessandro

We report the serendipitous discovery of a supernova (SN) in the nearby radio-galaxy 3C 78. Observations obtained with the STIS spectrograph on board the Hubble Space Telescope show, at a distance of...

The nuclei of radio galaxies in the UV: the signature of different emission processes (2002)

Chiaberge, Marco, Macchetto, F. Duccio, Sparks, William B., Capetti, Alessandro, Allen, Mark G., Martel, Andre' R.

We have studied the nuclei of 28 radio galaxies from the 3CR sample in the UV band. Unresolved nuclei (central compact cores, CCC) are observed in 10 of the 13 FR I, and in 5 of the 15 FR II. All...

The hst view of the narrow line region of seyfert galaxies (2002)

Capetti , Alessandro

HST observations provided us with the spatial resolution required to explore in detail the properties of the Narrow Line Region of Seyfert galaxies. In Seyferts with extended radio structures the HST...

Understanding the nature of FR II optical nuclei: A new diagnostic plane for radio galaxies (2002)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

We extend our study of the nuclei of 3CR FR II radio galaxies through HST optical images up to z=0.3. In the majority of them an unresolved nucleus (central compact core, CCC) is found. We analyze...

The BL Lac heart of Centaurus A (2001)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

Emission from the nucleus of the closest radio galaxy, Centaurus A, is observed from the radio to the gamma ray band. We build, for the first time, its overall Spectral Energy Distribution (SED) that...

Peering through the dust: Evidence for a supermassive black hole at the nucleus of Centaurus A from VLT infrared spectroscopy (2001)

Marconi, Alessandro, Capetti, Alessandro, Axon, David, Koekemoer, Anton, Macchetto, Duccio, Schreier, Ethan

Also archived in: arXiv:astro-ph/0011059 v1 2 Nov 2000

Peering through the dust: Evidence for a supermassive black hole at the nucleus of Centaurus A from VLT infrared spectroscopy (2001)

Marconi, Alessandro, Capetti, Alessandro, Axon, David, Koekemoer, Anton, Macchetto, Duccio, Schreier, Ethan

Also archived in: arXiv:astro-ph/0011059 v1 2 Nov 2000

The black hole mass vs bulge mass relationship in spiral galaxies (2001)

Marconi, Alessandro, Axon, David, Atkinson, John, Binney, James, Capetti, Alessandro, Carollo, C. Marcella, ...

"Galaxies and their Constituents at the Highest Angular Resolutions", Proceedings of the International Astronomical Union Symposium #205. Astronomical Society of the Pacific. Held in Manchester,...

HST [Hubble Space Telescope] infrared imaging polarimetry of Centaurus A: Implications for the unified scheme and the existence of a mis-directed BL Lac nucleus (2000)

Capetti, Alessandro, Schreier, Ethan, Axon, David, Young, Stuart, Hough, James, Clark, Simon, ...

Also archived in: arXiv:astro-ph/0007435 v1 28 Jul 2000

HST [Hubble Space Telescope] infrared imaging polarimetry of Centaurus A: Implications for the unified scheme and the existence of a mis-directed BL Lac nucleus (2000)

Capetti, Alessandro, Schreier, Ethan, Axon, David, Young, Stuart, Hough, James, Clark, Simon, ...

Also archived in: arXiv:astro-ph/0007435 v1 28 Jul 2000

Peering through the dust: Evidence for a supermassive Black Hole at the nucleus of Centaurus A from VLT IR spectroscopy (2000)

Marconi, Alessandro, Capetti, Alessandro, Axon, David, Koekemoer, Anton, Macchetto, Duccio, Schreier, Ethan

We used the near infrared spectrometer ISAAC at the ESO 'Very Large Telescope' to map the velocity field of Centaurus A (NGC 5128) at several position angles and locations in the central 20" of the...

The Morphology of the emission line region of Compact Steep Spectrum radio sources (2000)

Axon, David, Capetti, Alessandro, Fanti, Roberto, Morganti, Raffaella, Robinson, Andrew, Spencer, Ralph

Also archived in: arXiv:astro-ph/0006355 v1 26 Jun 2000

The morphology of the emission line region of compact steep spectrum radio sources (2000)

Axon, David, Capetti, Alessandro, Fanti, Roberto, Morganti, Raffaella, Robinson, Andrew, Spencer, Ralph

Also archived in: arXiv:astro-ph/0006355 v1 26 Jun 2000

HST observations of FR I radiogalaxies: what do they tell us about the BL Lac - FR I unification scheme? (2000)

Chiaberge, Marco, Celotti, Annalisa, Capetti, Alessandro, Ghisellini, Gabriele

We explore the viability of the unification of BL Lacs and FR I radio galaxies by comparing the core emission of radio galaxies with those of BL Lacs, taking advantage of the newly measured optical...

Does the unification of BL Lac and FR I radio galaxies require jet velocity structures? (2000)

Chiaberge, Marco, Celotti, Annalisa, Capetti, Alessandro, Ghisellini, Gabriele

We explore the viability of the unification of BL Lacs and FR I radio galaxies by comparing the core emission of radio galaxies with those of BL Lacs of similar extended radio power, taking advantage...

The HST view of the FR I / FR II dichotomy (2000)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

In order to explore how the FR I / FR II dichotomy is related to the nuclear properties of radio galaxies, we studied a complete sample of 26 nearby FR II radio galaxies using Hubble Space Telescope...

Unveiling the active nucleus of Centaurus A (2000)

Marconi, Alessandro, Schreier, Ethan, Koekemoer, Anton, Capetti, Alessandro, Axon, David, Macchetto, Duccio, ...

Also archived in: arXiv:astro-ph/9907378 v1 27 Jul 1999

Unveiling the active nucleus of Centaurus A (2000)

Marconi, Alessandro, Schreier, Ethan, Koekemoer, Anton, Capetti, Alessandro, Axon, David, Macchetto, Duccio, ...

Also archived in: arXiv:astro-ph/9907378 v1 27 Jul 1999

Unveiling the Active Nucleus of Centaurus A (1999)

Marconi, Alessandro, Schreier, Ethan, Koekemoer, Anton, Capetti, Alessandro, Axon, David, Macchetto, Duccio, ...

We report new HST WFPC2 and NICMOS observations of the center of the nearest radio galaxy Centaurus A (NGC 5128) and discuss their implications for our understanding of the active nucleus and jet. We...

The HST view of FR I radio galaxies: evidence for non-thermal nuclear sources (1999)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

Unresolved nuclear sources are detected by the Hubble Space Telescope in the great majority of a complete sample of 33 FR I radio galaxies belonging to the 3CR catalogue. The optical flux of these...

Hubble Space Telescope Faint Object Camera spectroscopy of the Narrow-Line Region of NGC 4151. I. Gas kinematics (1999)

Winge, Claudia, Axon, David, Macchetto, Duccio, Capetti, Alessandro, Marconi, Alessandro

Also archived in: arXiv:astro-ph/9901415 v1 29 Jan 1999

Hubble Space Telescope Faint Object Camera spectroscopy of the Narrow-Line Region of NGC 4151. I. Gas kinematics (1999)

Winge, Claudia, Axon, David, Macchetto, Duccio, Capetti, Alessandro, Marconi, Alessandro

Also archived in: arXiv:astro-ph/9901415 v1 29 Jan 1999

The Origin of the Narrow Line Region of Mrk 3: An Overpressured jet cocoon (1999)

Capetti, Alessandro, Axon, David, Macchetto, Duccio, Marconi, Alessandro, Winge, Claudia

Also archived in: arXiv:astro-ph/9811381 v1 24 Nov 1998

The origin of the narrow line region of Mrk 3: an overpressured jet cocoon (1999)

Capetti, Alessandro, Axon, David, Macchetto, Duccio, Marconi, Alessandro, Winge, Claudia

Also archived in: arXiv:astro-ph/9811381 v1 24 Nov 1998

Testing the FR I/BL Lac unifying model with HST observations (1999)

Capetti, Alessandro, Celotti, Annalisa

Hubble Space Telescope (HST) observations provide a novel way of testing unified models for FR I radio sources and BL Lac objects. The detection of extended dust discs in some radio galaxies provides...

The HST view of FR I radio galaxies: evidence for non-thermal nuclear sources (1999)

Chiaberge, Marco, Capetti, Alessandro, Celotti, Annalisa

Unresolved nuclear sources are detected by the Hubble Space Telescope in the great majority of a complete sample of 33 FR I radio galaxies belonging to the 3CR catalogue. The optical flux of these...

Testing the FR I/BL Lac unifying model with HST observations (1998)

Capetti, Alessandro, Celotti, Annalisa

Hubble Space Telescope (HST) observations provide a novel way of testing unified models for FR I radio sources and BL Lac objects. The detection of extended dust discs in some radio galaxies provides...

Evidence for a 20pc disk at the nucleus of Centaurus A (1998)

Schreier, Ethan, Marconi, Alessandro, Axon, David, Caon, Nicola, Macchetto, Duccio, Capetti, Alessandro, ...

Also archived in: arXiv:astro-ph/9804098 v1 9 Apr 1998 AND Space Telescope Science Institute Preprint #1245

Evidence for a 20pc disk at the nucleus of Centaurus A (1998)

Schreier, Ethan, Marconi, Alessandro, Axon, David, Caon, Nicola, Macchetto, Duccio, Capetti, Alessandro, ...

Also archived in: arXiv:astro-ph/9804098 v1 9 Apr 1998 AND Space Telescope Science Institute Preprint #1245

Evidence for a 20pc disk at the nucleus of Centaurus A (1998)

Schreier, Ethan, Marconi, Alessandro, Axon, David, Caon, Nicola, Macchetto, Duccio, Capetti, Alessandro, ...

We report HST NICMOS observations of the central region of NGC 5128 at 2.2mic and in Paschen Alpha (PA). The continuum images show extended emission typical of an elliptical galaxy and a strong...

The Supermassive black hole of M87 and the kinematics of its associated gaseous disk (1997)

Macchetto, Duccio, Marconi, Alessandro, Axon, David, Capetti, Alessandro, Sparks, William, Crane, Phillipe

Also archived in: arXiv:astro-ph/9706252 v1 25 Jun 1997

The supermassive black hole of M87 and the kinematics of its associated gaseous disk (1997)

Macchetto, Duccio, Marconi, Alessandro, Axon, David, Capetti, Alessandro, Sparks, William, Crane, Phillipe

Also archived in: arXiv:astro-ph/9706252 v1 25 Jun 1997

The Narrow Line Region of NGC 4151: A Turbulent cauldron (1997)

Winge, Claudia, Axon, David, Macchetto, Duccio, Capetti, Alessandro

Also archived in: arXiv:astro-ph/9707170 v1 15 Jul 1997

Jet driven motions in the Narrow Line region of NGC1068 (1997)

Axon, David, Marconi, Alessandro, Capetti, Alessandro, Macchetto, Duccio, Schreier, Ethan, Robinson, Andrew

Also archived in: arXiv:astro-ph/9801253 v1 26 Jan 1998