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81. 2048 x 2048 HgCdTe Arrays for Astronomy at Visible and Infrared Wavelengths
... 1 - 5 m HgCdTe Detector Material . Hybridization of 2048 x 2048 Arrays . ... Options for Extension to Visible Wavelengths . ... MBE HgCdTe Capability at Rockwell Science Center . ... Over the last two decades, dramatic improvements in the performance of 1 - 5 m infrared detector materials combined with the leap from single detectors to million pixel arrays have led to a billion-fold improvement in our ability to observe astronomical sources at these wavelengths. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node39.html -- 35.2 Кб -- 12.06.2006
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82. The Evolution of Stars seen with ISOCAM - the Need for NICMOS and VLT Follow...
Next: Unusual Emission near a Up: NICMOS Science Previous: The Stellar Population in . ... Three examples are presented of how ISOCAM 1 sees the process of stellar evolution. i) Standard staring and coronographic observations with ISOCAM towards BD+31 643 are presented. ... Position 4 is closest to the star; Position 6 coincides roughly with the minimum of emission seen in the images; position 7 with the ring. ... I presented three examples of the evolution of stars as seen with ISOCAM. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node22.html -- 26.3 Кб -- 12.06.2006
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83. Limits on the Star Formation Rates of z>2 Damped Ly Systems from H Spectroscopy
... Searches for Star Formation in Damped Systems . ... The objective was to measure the star-formation rates in these systems. However, no H emission was detected above our limits of Wm -2 , corresponding to star formation rates ( q 0 =0.5). ... For q 0 =0.5 our limits are in conflict with the star formation rates predicted under the assumption that the high- z DLAs are the fully-formed galactic-disk counterparts of today's massive spiral galaxies. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node36.html -- 20.9 Кб -- 12.06.2006
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84. The Stellar Population in the NICMOS Parallel Fields
Next: The Evolution of Stars Up: NICMOS Science Previous: A Coronagraphic Search for . ... The NICMOS Parallel program . ... The Stellar Population . ... NICMOS Camera 3 is being used in parallel mode to observe galactic fields at both high and low galactic latitudes. ... Most of the fields are at high galactic latitude; as Figure 1 shows, only 8 pointings are within |b| = 10 o , i.e. the galactic disk. Figure 1: NICMOS parallel fields distribution in galactic latitude. ... Figure 6 ). ...
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Ссылки http://www.stecf.org/conferences/sardinia/node21.html -- 18.2 Кб -- 12.06.2006
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85. The Structure and Composition of High Redshift Radio Galaxies
... Keck spectropolarimetry, giving spectral coverage from Ly- to beyond CIII], and HST imaging of a sample of powerful radio galaxies with has been obtained. ... This is a short progress report on a rather extensive programme we are carrying out to study the structure and composition of high redshift radio galaxies (HzRG) -- and, by implication, the host galaxies of radio quasars -- using observations in the optical, IR and mm bands. ... An example of the NICMOS and WFPC 2 imaging is shown in Figure 2 ...
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Ссылки http://www.stecf.org/conferences/sardinia/node33.html -- 19.1 Кб -- 12.06.2006
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86. VLT Status and Instruments
Next: VLT First Light Up: Front Cover Previous: Participants . VLT First Light . ... Image Quality of the VLT . ... Near IR Astronomy with the ESO VLT . Introduction and Overview . Infrared instruments for the VLT . Instrument Summary . ... Performance . ... CONICA: The high resolution near-infrared camera for the ESO VLT . Introduction . Design of Imaging Optics . Analyzing Optics . Cryo-mechanical Design . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node4.html -- 4.7 Кб -- 12.06.2006
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87. A Coronagraphic Search for Substellar Companions to Young Stars
Next: The Stellar Population in Up: NICMOS Science Previous: NICMOS Coronagraphic Surveys-Preliminary Results . ... Searching around young stars . ... We are using NICMOS to search for very low-mass stellar and sub-stellar companions around nearby, young, main-sequence stars. ... NICMOS, coronagraph, young stars, brown dwarfs . ... We present images of a possible companion, probably a low-mass M star, to the star HD102982 which demonstrates our ability to detect substellar objects. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node20.html -- 21.5 Кб -- 12.06.2006
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88. HST NICMOS Observations of Circumstellar Matter Around CYG X-3
Next: NICMOS Observes the Galactic Up: NICMOS Science Previous: Unusual Emission near a . ... Previous Observations . ... We are attempting to test these models by searching for the presence of such circumbinary material around the only known c+WR object: Cyg X-3. ... This result is preliminary and needs confirmation by NIC-1 observations with its better sampling of the stellar profile. binaries: close - stars: individual: Cyg X-3 - stars: Wolf-Rayet - infrared: stars - circumstellar matter . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node24.html -- 32.3 Кб -- 12.06.2006
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89. NICMOS Camera 3 Parallel Imaging Observations: Number Counts, Sizes and Red
Next: The Structure and Composition Up: NICMOS Science Previous: HST/NICMOS Observations of the . ... NICMOS Imaging . ... Object Sizes . ... Extremely Red Objects . ... We present results from our analysis of F160W images obtained with NICMOS Camera 3 operating in the parallel mode. ... Our ground-based visible-light imaging of the NICMOS parallel fields has revealed one such object and a small number of similar objects are within the camera 2 or camera 3 images of distant radio galaxies and quasars. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node32.html -- 27.8 Кб -- 12.06.2006
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90. Index
... Aloisi, A. The Old Stellar Population . Alonso-Herrero, A. HST /NICMOS Observations of the . ... Balcells, M. HST-NICMOS Observations of Galactic . ... Baum, S.A. Investigating the Evolution of . ... Becklin, E.E. A Coronagraphic Search for . ... Clampin, M. The Old Stellar Population . ... Close, L. HST NICMOS Observations of . ... The Stellar Population in . Geballe, T.R. HST NICMOS Observations of . ... Greggio, L. The Old Stellar Population . ... Leitherer, C. The Old Stellar Population . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node40.html -- 14.1 Кб -- 12.06.2006
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91. Design and Status of the NICMOS Cryocooler
... Expected NICMOS Performance after HST Servicing Mission 3 . NICMOS Cooling System Design . ... NASA is developing the NICMOS Cooling System (NCS) to provide operation of NICMOS beyond the exhaustion of its stored solid nitrogen cryogen. ... The NCS combines an external radiator identical in design to the ACS/STIS Aft Shroud Cooling System (ASCS) planned for SM3, a Creare, Inc. reverse-Brayton cycle turbine cooler, and an EVA installed neon loop to the NICMOS dewar's cooling coil. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node38.html -- 20.9 Кб -- 12.06.2006
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92. Unusual Emission near a Compact Source in Orion
... One striking feature is a small source of almost pure H 2 line emission, which is located near one of the compact sources in Orion reported by O'Dell and collaborators (HST-18 = 203-504). ... H-H objects, Proplyds, Orion Bar, H 2 . ... We obtained a series of images across the bright rim of the Orion Bar near the peaks of mm-wave molecular line emission with NICMOS cameras 1-3 (NIC1, NIC2, NIC3) in several filters on 1998 February 18. ... The suggestion of an H-H object does not seem compelling. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node23.html -- 19.0 Кб -- 12.06.2006
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93. The Formation and Evolution of LMC Rich Star Clusters: NGC 1818
... LMC Project Outline . NGC 1818 Initial Results . ... The Large Magellanic Cloud (LMC) is uniquely suitable for the study of massive star clusters at all stages of evolution. By combining HST observations of these clusters with N-body models we hope to understand the origin and evolution of rich star clusters in our own Galaxy, in the LMC, and beyond. ... We aim to combine our HST observations with N-body models to understand the formation and evolution of globular clusters. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node27.html -- 15.4 Кб -- 12.06.2006
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94. The Old Stellar Population of NGC 1569 from NICMOS data
Next: HST-NICMOS Observations of Galactic Up: NICMOS Science Previous: A Color Analysis of . ... Why choose NGC 1569? ... NICMOS Data in the Central Region of NGC 1569 . ... To have a census of the old stellar populations of the dwarf irregular galaxies NGC 1569 and NGC 1705 and to trace the major episodes of star formation over a Hubble time in these starbursting systems, we have applied for and obtained HST/NICMOS observations in the F110W and F160W bands with the NIC2 camera. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node29.html -- 27.6 Кб -- 12.06.2006
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95. HST/NICMOS Observations of the Interacting System Arp 299
Next: NICMOS Camera 3 Parallel Up: NICMOS Science Previous: HST-NICMOS Observations of Galactic . ... Observations . ... Arp 299 (IC 694 + NGC 3690) is one of the nearest examples of interacting galaxies with a high infrared (IR) luminosity ( , for the assumed distance Mpc), close to the limiting value for ultraluminous IR galaxies. We present HST /NICMOS observations taken with all three cameras. ... We have presented HST /NICMOS observations of the interacting system Arp 299 (IC 694 + NGC 3690). ...
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Ссылки http://www.stecf.org/conferences/sardinia/node31.html -- 33.3 Кб -- 12.06.2006
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96. Future Technology
Next: Design and Status of Up: No Title Previous: Limits on the Star . Design and Status of the NICMOS Cryocooler . ... Extending the NICMOS Lifetime . ... Expected NICMOS Performance after HST Servicing Mission 3 . NICMOS Cooling System Design . ... Creare Cryocooler . Power Conversion Electronics . Electronics Support Module . Aft-Shroud Cooling System . ... 2048 x 2048 HgCdTe Arrays for Astronomy at Visible and Infrared Wavelengths . ... Hybridization of 2048 x 2048 Arrays . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node37.html -- 5.7 Кб -- 12.06.2006
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97. NICMOS/HST H-band (F160W) Images of the 30 Dor Starburst Cluster
Next: The Formation and Evolution Up: NICMOS Science Previous: NICMOS Observes the Galactic . ... We have taken diffraction-limited ( 0.15") near-infrared F160W (henceforth H-band, for convenience) images with NICMOS on HST of the center of the R136 cluster (age 3.5 Myr) in the core of the 30 Dor giant HII region in the Large Magellanic Cloud. ... 1996, ApJ 466, 274) can sample only M >2M , while previous V and I band HST images with WFPC2 (Hunter et al. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node26.html -- 13.9 Кб -- 12.06.2006
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98. NICMOS Observes the Galactic Center
Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node25.html -- 12.9 Кб -- 12.06.2006
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99. A Color Analysis of NICMOS Parallel Observations
... The NICMOS Parallel Program . Analysis . ... NICMOS observations made in parallel with the other HST instruments have produced an archive of over 2,000 images, covering a wide range of Galactic latitudes. ... The maximum sensitivity of these images is approximately 0.1 Jy, which should allow the detection of such astrophysically interesting sources as brown dwarfs in the solar neighborhood and star-forming galaxies out to z 3. ...
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Ссылки http://www.stecf.org/conferences/sardinia/node28.html -- 19.5 Кб -- 12.06.2006
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100. Participants
... Almudena Alonso-Herrero , University of Arizona, Steward Observatory, 933 N. Cherry Avenue, Tucson, AZ 85721, USA (aalonso@as.arizona.edu) . ... 2, D-85748 Garching, Germany (pbenvenu@eso.org) . ... Howard Bushouse , Space Telescope Science Institute, Science Software Group, 3700 San Martin Drive, Baltimore, MD 21218, USA (bushouse@stsci.edu) . Luis Colina , Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA (colina@stsci.edu) . ...
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Ссылки http://www.stecf.org/conferences/sardinia/node3.html -- 10.1 Кб -- 12.06.2006
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