Extragalactic abstracts - IRSA - California Institute of Technology

More documents

Recommendations

Info

Spitzer_Approved_Extragalactic Mar 25, 10 16:24 Page 419/742 Spitzer Space Telescope − Guaranteed Time Observer Proposal #40128 Line emission associated with the Northern inner radio lobe of Centaurus A Principal Investigator: Mairi Brookes Institution: Jet Propulsion Laboratory Technical Contact: Mairi Brookes, Jet Propulsion Laboratory Co−Investigators: Charles Lawrence, JPL Alice Quillen, Rochester Daniel Stern, JPL Varourjan Gorjian, JPL John−David Smith, University of Arizona Vassilis Charmandaris, University of Crete Science Category: AGN/quasars/radio galaxies Observing Modes: IrsMap Hours Approved: 7.0 Abstract: We propose observations which will quantitatively measure the impact of high energy jets in the radio galaxy Centaurus A upon its host galaxy NGC5128. This will be done by searching for emission lines associated with the Northern Inner radio lobe. SL/LL observations of the northern inner radio lobe will search for molecular hydrogen in association with UV emission in this region which is in excess of the jet synchrotron emission expectation, again providing constraints on the excitation mechanism. If shocks are present it is possible that other emission lines, such as [OIV] may be present also. This unique source offers the opportunity to study the details of jet−host galaxy interaction in a relatively nearby system (3.4Mpc). Spitzer_Approved_Extragalactic Printed_by_SSC Mar 25, 10 16:24 Page 420/742 Spitzer Space Telescope − General Observer Proposal #20753 The origin of extended Lyman−alpha around a z=4.5 QSO Principal Investigator: Andrew Bunker Institution: University of Exeter Technical Contact: Daniel Stern, JPL/Caltech Co−Investigators: Daniel Stern, Jet Propulsion Laboratory Science Category: AGN/quasars/radio galaxies Observing Modes: IracMap MipsPhot Hours Approved: 6.2 Abstract: We have discovered extended Lyman−alpha emission around a z=4.5 QSO in a deep long−slit spectrum with Keck/LRIS. The line emission extends 5arcsec beyond the continuum of the QSO and is spatially asymmetric. This extended line emission has a spectral extent of 1000km/s, much narrower in velocity spread than the broad Lyman−alpha from the QSO itself and slightly offset in redshift. No evidence of continuum is seen for the extended emission line region. This phenomenon is rare in QSOs which are not radio loud, and this is the first time it has been observed at z>4. It is possible that the QSO is illuminating the surrounding cold gas of the host galaxy, with the ionizing photons producing Lyman−alpha fluorescence. As suggested by Haiman & Rees (2001), this "fuzz" around a distant quasar may place strong constraints on galaxy formation and the extended distribution of cold, neutral gas. Alternatively, the Lyman−alpha may be powered locally by star formation in a galaxy−wide starburst. By searching for stellar continuum at longer wavelengths with IRAC, we can discriminate between these theories. We have also discovered a Lyman−alpha "blob" at the QSO redshift and only 23arcsec (150kpc) away: MIPS imaging will reveal whether this is a ULIRG−like buried source, or if it is being photoionized by the QSO. Thursday March 25, 2010 xgal_covers.txt 210/371
Spitzer_Approved_Extragalactic Mar 25, 10 16:24 Page 421/742 Spitzer Space Telescope − General Observer Proposal #50792 The nature of low−ionization BAL QSOs Principal Investigator: Gabriela Canalizo Institution: University of California, Riverside Technical Contact: Gabriela Canalizo, University of California, Riverside Co−Investigators: Mariana Lazarova, University of Califonia, Riverside Mark Lacy, Spitzer Science Center Science Category: AGN/quasars/radio galaxies Observing Modes: IrsStare MipsPhot Hours Approved: 16.4 Abstract: The rare subclass of optically−selected QSOs known as low−ionization broad absorption line (LoBAL) QSOs show show signs of high−velocity gas outflows and reddened continua indicative of dust obscuration. Recent studies show that galaxies hosting LoBAL QSOs tend to be ultraluminous infrared systems that are undergoing mergers and that have young (< 100 Myr) stellar populations. Such observations support the idea that LoBAL QSOs represent a short−lived phase early in the life of QSOs, when powerful AGN−driven winds are blowing away the dust surrounding the QSO. If so, understanding LoBALs may be crucial in the study of phenomena regulating black hole and galaxy evolution, such as AGN feedback and the early stages of nuclear accretion. Such claims, however, are based on results from very small samples that may have serious selection biases. We are therefore taking a more aggressive approach by conducting a systematic study of a volume limited sample of LoBAL QSOs at 0.5 < z < 0.6 drawn from SDSS. We propose to obtain far−IR fluxes with MIPS to construct SEDs for these objects and determine whether they are truly exclusively found in ultraluminous infrared systems. We also propose to obtain IRS spectra to estimate star formation rates from PAH features. Spitzer_Approved_Extragalactic Printed_by_SSC Mar 25, 10 16:24 Page 422/742 Spitzer Space Telescope − General Observer Proposal #3296 Particle Acceleration in Two 3CR Quasar Hotspots Principal Investigator: Chi Cheung Institution: Brandeis University Technical Contact: Chi Cheung, Brandeis University Co−Investigators: John Wardle, Brandeis University Science Category: AGN/quasars/radio galaxies Observing Modes: IracMap Hours Approved: 2.3 Abstract: We propose Spitzer Space Telescope 4.5+8.0 micron IRAC imaging of the high power hotspots in two powerful 3CR quasars. Their faint optical counterparts were recently detected by us with the Hubble Space Telescope. The optical, and proposed infrared data, will allow us to measure the high energy slope of the hotspot synchrotron spectra. Utilizing archival VLA and MERLIN data in the centimeter wavelength range, these multi−wavelength observations give us adequate constraints on the overall shape of the spectra, which will allow us to test a simple prediction from particle acceleration theory. Thursday March 25, 2010 xgal_covers.txt 211/371
Page 1 and 2:
Spitzer_Approved_Extragalactic Mar
Page 3 and 4:
Page 5 and 6:
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Mar 25, 10 16:24 Spitzer_Approved_E
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160: Spitzer_Approved_Extragalactic Mar
Page 165 and 166: Mar 25, 10 16:24 Spitzer_Approved_E
Page 209: Spitzer_Approved_Extragalactic Mar
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371:
show all

Extragalactic abstracts - IRSA - California Institute of Technology

Create successful ePaper yourself

Delete template?

Save as template?