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1. Full Text Weak emission-line quasars in the context of a modified Baldwin effect
by Shemmer, Ohad and Lieber, Sara
Astrophysical Journal, ISSN 0004-637X, 06/2015, Volume 805, Issue 2, pp. 124 - 8
We investigate the relationship between the rest-frame equivalent width (EW) of the C IV lambda 1549 broad-emission line, monochromatic luminosity at... 
quasars: emission lines | quasars: general | galaxies: nuclei | galaxies: active | HIGH-REDSHIFT QUASARS | DATA RELEASE 7 | ASTRONOMICAL DATA | ACTIVE GALACTIC NUCLEI | LUMINOUS QUASARS | DIGITAL SKY SURVEY | BLACK-HOLE MASS | ASTRONOMY & ASTROPHYSICS | NEAR-INFRARED SPECTROSCOPY | X-RAY | STELLAR OBJECTS | Quasars | Spectroscopy | Red shift | Equivalence | Luminosity | Strategy | Black holes (astronomy) | Physical properties
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2. Full Text Discovery of the first heavily obscured QSO candidate at z > 6 in a close galaxy pair
by Vito, F and Brandt, WN and Bauer, FE and Gilli, R and Luo, B and Zamorani, G and Calura, F and Comastri, A and Mazzucchelli, C and Mignoli, M and Nanni, R and Shemmer, O and Vignali, C and Brusa, M and Cappelluti, N and Civano, F and Volonteri, M
ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 08/2019, Volume 628, p. L6
While theoretical arguments predict that most of the early growth of supermassive black holes (SMBHs) happened during heavily obscured phases of accretion,... 
methods: observational | QUASARS | EVOLUTION | STAR-FORMING GALAXIES | galaxies: active | ASTRONOMY & ASTROPHYSICS | X-rays: individuals: J167.6415-13.4960 | REDSHIFT | early Universe | galaxies: individual: J167.6415-13.4960 | galaxies: high-redshift | BLACK-HOLES | Galaxies
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3. Full Text Observational evidence of quasar feedback quenching star formation at high redshift
by Cano-Díaz, M and Maiolino, R and Marconi, A and Netzer, H and Shemmer, O and Cresci, G
Astronomy and Astrophysics, ISSN 0004-6361, 2012, Volume 537, p. L8
Most galaxy evolutionary models require quasar feedback to regulate star formation in their host galaxies. In particular, at high redshift, models expect that... 
galaxies: formation | quasars: emission lines | galaxies: evolution | galaxies: high-redshift | HERSCHEL-PACS | LINE REGIONS | BLACK-HOLES | ACTIVE GALACTIC NUCLEI | MOLECULAR OUTFLOWS | ASTRONOMY & ASTROPHYSICS | NEAR-INFRARED SPECTROSCOPY | NARROW-LINE | ACCRETION | GALAXY FORMATION | KINEMATICS
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4. Full Text Massive stars exploding in a He-rich circumstellar medium - I. Type Ibn (SN 2006jc-like) events
by Pastorello, A and Mattila, S and Zampieri, L and Della Valle, M and Smartt, S. J and Valenti, S and Agnoletto, I and Benetti, S and Benn, C. R and Branch, D and Cappellaro, E and Dennefeld, M and Eldridge, J. J and Gal-Yam, A and Harutyunyan, A and Hunter, I and Kjeldsen, H and Lipkin, Y and Mazzali, P. A and Milne, P and Navasardyan, H and Ofek, E. O and Pian, E and Shemmer, O and Spiro, S and Stathakis, R. A and Taubenberger, S and Turatto, M and Yamaoka, H
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 2008, Volume 389, Issue 1, pp. 113 - 130
We present new spectroscopic and photometric data of the Type Ibn supernovae 2006jc, 2000er and 2002ao. We discuss the general properties of this recently... 
supernovae: individual: SN 2002ao | supernovae: individual: SN 1885A | supernovae: individual: SN 2000er | supernovae: general | supernovae: individual: SN 1999cq | supernovae: individual: SN 2006jc | Supernovae: individual: SN 2002ao | Supernovae: general | Supernovae: individual: SN 1885A | Supernovae: individual: SN 2000er | Supernovae: individual: SN 1999cq | Supernovae: individual: SN 2006jc | SPACE-TELESCOPE IMAGES | INFRARED LIGHT CURVES | IA SUPERNOVAE | ETA-CARINAE | LUMINOUS BLUE VARIABLES | WOLF-RAYET STARS | SMALL-MAGELLANIC-CLOUD | II SUPERNOVAE | ASTRONOMY & ASTROPHYSICS | CORE-COLLAPSE SUPERNOVAE | BINARY-SYSTEM HD-5980 | Astronomy | Astrophysics | Supernovae | Stars & galaxies | Spectrum analysis | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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5. Full Text BLACK HOLE MASS AND GROWTH RATE AT z similar or equal to 4.8: A SHORT EPISODE OF FAST GROWTH FOLLOWED BY SHORT DUTY CYCLE ACTIVITY
by Trakhtenbrot, B and Netzer, H and Lira, P and Shemmer, O
ASTROPHYSICAL JOURNAL, ISSN 0004-637X, 03/2011, Volume 730, Issue 1
We present new H-band spectroscopy for a flux-limited sample of 40 z similar or equal to 4.8 active galactic nuclei, selected from the Sloan Digital Sky... 
quasars: emission lines | HIGH-REDSHIFT QUASARS | COSMOLOGICAL EVOLUTION | STAR-FORMATION | LUMINOSITY FUNCTION | galaxies: active | LINE SEYFERT-1 GALAXIES | ENERGY-DISTRIBUTIONS | COSMIC EVOLUTION | ASTRONOMY & ASTROPHYSICS | GALACTIC NUCLEI | galaxies: nuclei | RADIATION PRESSURE | DIGITAL-SKY-SURVEY
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6. Full Text ALMA Observations Show Major Mergers among the Host Galaxies of Fast-growing, High-redshift, Supermassive Black Holes
by Trakhtenbrot, Benny and Lira, Paulina and Netzer, Hagai and Cicone, Claudia and Maiolino, Roberto and Shemmer, Ohad
Astrophysical Journal, ISSN 0004-637X, 02/2017, Volume 836, Issue 1, p. 8
We present new ALMA band-7 data for a sample of six luminous quasars at z similar or equal to 4.8, powered by fast-growing supermassive black holes (SMBHs)... 
quasars: general | galaxies: active | galaxies: interactions | galaxies: high-redshift | galaxies: star formation | STAR-FORMING GALAXIES | SIMILAR-TO 2.5 | STELLAR MASS FUNCTIONS | QUASAR LUMINOSITY FUNCTION | ACTIVE GALACTIC NUCLEI | SPECTRAL ENERGY-DISTRIBUTIONS | ASTRONOMY & ASTROPHYSICS | C-II LINE | FAR-INFRARED CONTINUUM | DIGITAL-SKY-SURVEY | 10 SOLAR MASS
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7. Full Text STAR FORMATION AND BLACK HOLE GROWTH AT z similar or equal to 4.8
by Netzer, H and Mor, R and Trakhtenbrot, B and Shemmer, O and Lira, P
ASTROPHYSICAL JOURNAL, ISSN 0004-637X, 08/2014, Volume 791, Issue 1
We report Herschel/SPIRE, Spitzer and Wide-field Infrared Survey Explorer observations of 44 z similar or equal to 4.8 optically selected active galactic... 
FORMATION RATES | quasars: general | galaxies: star formation | INFRARED LUMINOSITY FUNCTIONS | COSMOLOGICAL SIMULATIONS | ACTIVE GALACTIC NUCLEI | QSO HOST GALAXIES | FORMING GALAXIES | galaxies: active | DIGITAL SKY SURVEY | HIGH-REDSHIFT | ASTRONOMY & ASTROPHYSICS | SPECTRAL ENERGY-DISTRIBUTION | STELLAR MASS
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8. Full Text STAR FORMATION BLACK HOLE GROWTH and DUSTY TORI in the MOST LUMINOUS AGNS at Z = 2-3.5
by Netzer, Hagai and Lani, Caterina and Nordon, Raanan and Trakhtenbrot, Benny and Lira, Paulina and Shemmer, Ohad
Astrophysical Journal, ISSN 0004-637X, 03/2016, Volume 819, Issue 2
We report Herschel/SPIRE observations of 100 very luminous, optically selected active galactic nuclei (AGNs) at z = 2-3.5 with log L-1350 (erg s(-1)) >= 46.5,... 
galaxies: active | quasars: general | galaxies: star formation | FORMATION RATES | OBSCURED QUASARS | HERSCHEL-ATLAS | X-RAY LUMINOSITY | ACTIVE GALACTIC NUCLEI | SPECTRAL ENERGY-DISTRIBUTIONS | FORMING GALAXIES | DIGITAL SKY SURVEY | ASTRONOMY & ASTROPHYSICS | OBSERVATIONAL IMPLICATIONS | DATA RELEASE | Toruses | Active galactic nuclei | Red shift | Fittings | Star formation | Spectral energy distribution | Emission | Luminosity | Physics - Astrophysics of Galaxies
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9. Full Text Dust covering factor, silicate emission, and star formation in luminous QSOs
by Maiolino, R and Shemmer, O and Imanishi, M and Netzer, H and Oliva, E and Lutz, D and Sturm, E
Astronomy and Astrophysics, ISSN 0004-6361, 06/2007, Volume 468, Issue 3, pp. 979 - 992
We present Spitzer IRS low resolution, mid-IR spectra of a sample of 25 high luminosity QSOs at 2 < z < 3.5. When combined with archival IRS observations of... 
Galaxies: nuclei | Galaxies: active | Galaxies: starburst | Galaxies: Seyfert | Quasars: general | Infrared: galaxies | HIGH-REDSHIFT QUASARS | galaxies : nuclei | SUPERMASSIVE BLACK-HOLES | X-RAY LUMINOSITY | ACTIVE GALACTIC NUCLEI | SPECTRAL ENERGY-DISTRIBUTIONS | DIGITAL SKY SURVEY | ASTRONOMY & ASTROPHYSICS | NEARBY SEYFERT-GALAXIES | INFRARED SPECTROGRAPH IRS | infrared : galaxies | quasars : general | SPITZER-SPACE-TELESCOPE | galaxies : starburst | galaxies : active | XMM-NEWTON | galaxies : Seyfert | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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10. Full Text Black Hole Mass and Growth Rate at High Redshift
by Netzer, Hagai and Lira, Paulina and Trakhtenbrot, Benny and Shemmer, Ohad and Cury, Iara
The Astrophysical Journal, ISSN 0004-637X, 12/2007, Volume 671, Issue 2, pp. 1256 - 1263
We present new H- and K-band spectroscopy of 15 high-luminosity active galactic nuclei (AGNs) at redshifts 2.3-3.4 obtained with Gemini South. We combined the... 
Galaxies: nuclei | Galaxies: active | Quasars: emission lines | LUMINOSITY | ACCRETION RATE | SIZE | galaxies : nuclei | METALLICITY | quasars : emission lines | REGION | QUASARS | EVOLUTION | ACTIVE GALACTIC NUCLEI | ASTRONOMY & ASTROPHYSICS | NEAR-INFRARED SPECTROSCOPY | galaxies : active | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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11. Full Text Reverberation Mapping of High-Luminosity Quasars: First Results
by Kaspi, Shai and Brandt, W. N and Maoz, Dan and Netzer, Hagai and Schneider, Donald P and Shemmer, Ohad
The Astrophysical Journal, ISSN 0004-637X, 04/2007, Volume 659, Issue 2 I, pp. 997 - 1007
Reverberation mapping of nearby active galactic nuclei (AGNs) has led to estimates of broad-line region (BLR) sizes and central object masses for some 37... 
Galaxies: nuclei | Galaxies: active | Galaxies: Seyfert | Quasars: general | BROAD-LINE REGION | ULTRAVIOLET OBSERVATIONS | PALOMAR-GREEN QUASARS | HUBBLE-SPACE-TELESCOPE | galaxies : nuclei | BLACK-HOLE MASSES | SOFT-X-RAY | ACTIVE GALACTIC NUCLEI | HOBBY-EBERLY TELESCOPE | DIGITAL SKY SURVEY | ASTRONOMY & ASTROPHYSICS | quasars : general | SEYFERT-1 GALAXIES | galaxies : active | galaxies : Seyfert | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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12. Full Text The Hard X-Ray Spectrum as a Probe for Black Hole Growth in Radio-Quiet Active Galactic Nuclei
by Shemmer, Ohad and Brandt, W. N and Netzer, Hagai and Maiolino, Roberto and Kaspi, Shai
The Astrophysical Journal, ISSN 0004-637X, 07/2008, Volume 682, Issue 1, pp. 81 - 93
We study the hard X-ray spectral properties of 10 highly luminous radio-quiet (RQ) active galactic nuclei (AGNs) at z 1: 3 3: 2, including new XMM-Newton... 
Galaxies: nuclei | Galaxies: active | X-rays: galaxies | Quasars: emission lines | LINEAR-REGRESSION | HIGH-REDSHIFT QUASARS | ACCRETION RATE | galaxies : nuclei | SEYFERT 1 GALAXIES | X-rays : galaxies | quasars : emission lines | PG QUASARS | ASTRONOMICAL DATA | DIGITAL SKY SURVEY | ENERGY-DISTRIBUTIONS | ASTRONOMY & ASTROPHYSICS | LUMINOSITY RELATIONSHIP | XMM-NEWTON OBSERVATIONS | galaxies : active | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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13. Full Text Supernova 2002ap: the first month
by Gal-Yam, Avishay and Ofek, Eran O and Shemmer, Ohad
Monthly Notices of the Royal Astronomical Society, ISSN 0035-8711, 6/2002, Volume 332, Issue 4, pp. L73 - L77
Abstract Supernova (SN) 2002ap in M74 was discovered on 2002 January 29. Being one of the nearest (10 Mpc) SN events in the last decades, and spectroscopically... 
supernovae: individual: SN 2002ap | gamma‐rays: bursts | Gamma-rays: bursts | Supernovae: individual: SN 2002ap | GAMMA-RAY BURST | 25 APRIL 1998 | HYPERNOVA | gamma-rays : bursts | ASTRONOMY & ASTROPHYSICS | supernovae : individual : SN 2002ap | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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14. Full Text AGN feedback on molecular gas reservoirs in quasars at z ∼ 2.4
by Carniani, S and Marconi, A and Maiolino, R and Feruglio, C and Brusa, M and Cresci, G and Cano-Díaz, M and Cicone, C and Balmaverde, B and Fiore, F and Ferrara, A and Gallerani, S and La Franca, F and Mainieri, V and Mannucci, F and Netzer, H and Piconcelli, E and Sani, E and Schneider, R and Shemmer, O and Testi, L
Astronomy and Astrophysics, ISSN 0004-6361, 09/2017, Volume 605, p. A105
We present new ALMA observations aimed at mapping molecular gas reservoirs through the CO(3−2) transition in three quasars at z ≃ 2.4, LBQS 0109+0213, 2QZ... 
Quasars: individual: 2QZ J002830.4-281706 | Galaxies: evolution | Quasars: individual: [HB89] 0329-385 | Galaxies: high-redshift | Quasars: individual: LBQS 0109+0213 | Quasars: emission lines | Quasars | Red shift | Galaxies | Molecular gases | Galactic evolution | Emission | Molecular chains | Emissions | Negative feedback | Active galactic nuclei | Maps | Star formation | Outflow | Reservoirs | Emitters | Star & galaxy formation
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15. Full Text The Hard X-Ray Spectral Slope as an Accretion Rate Indicator in Radio-quiet Active Galactic Nuclei
by Shemmer, Ohad and Brandt, W. N and Netzer, Hagai and Maiolino, Roberto and Kaspi, Shai
The Astrophysical Journal Letters, ISSN 1538-4357, 07/2006, Volume 646, Issue II, pp. L29 - L32
We present new XMM-Newton observations of two luminous and high accretion rate radio-quiet active galactic nuclei (AGNs) at z similar to 2. Together with... 
Galaxies: nuclei | Galaxies: active | Quasars: individual (Q1346-036, HE 2217-2818) | X-rays: galaxies | Quasars: emission lines | LUMINOSITY | HIGH-REDSHIFT QUASARS | galaxies : nuclei | SEYFERT 1 GALAXIES | X-rays : galaxies | quasars : emission lines | ASCA | PG QUASARS | SPECTROSCOPY | ENERGY-DISTRIBUTIONS | ASTRONOMY & ASTROPHYSICS | quasars : individual (Q1346-036, HE 2217-2818) | LINE | XMM-NEWTON OBSERVATIONS | STELLAR OBJECTS | galaxies : active | Physics - Cosmology and Nongalactic Astrophysics | Physics - Earth and Planetary Astrophysics | Physics - Instrumentation and Methods for Astrophysics | Physics - High Energy Astrophysical Phenomena | Physics - Solar and Stellar Astrophysics | Physics - Astrophysics of Galaxies
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16. Full Text Ionised outflows in z similar to 2.4 quasar host galaxies
by Carniani, S and Marconi, A and Maiolino, R and Balmaverde, B and Brusa, M and Cano-Diaz, M and Cicone, C and Comastri, A and Cresci, G and Fiore, F and Feruglio, C and La Franca, F and Mainieri, V and Mannucci, F and Nagao, T and Netzer, H and Piconcelli, E and Risaliti, G and Schneider, R and Shemmer, O
ASTRONOMY & ASTROPHYSICS, ISSN 1432-0746, 08/2015, Volume 580
Aims. Outflows driven by active galactic nuclei (AGN) are invoked by galaxy evolutionary models to quench star formation and to explain the origin of the... 
quasars: emission lines | COLD GAS | galaxies: evolution | STAR-FORMATION | OBSCURED QUASARS | NARROW-LINE REGIONS | MOLECULAR OUTFLOW | SUPERMASSIVE BLACK-HOLES | WIDE OUTFLOWS | ACTIVE GALACTIC NUCLEI