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Observations of Ultraluminous Infrared Galaxies with the Infrared Spectrograph (IRS) on the Spitzer Space Telescope: Early Results on Markarian 1014, Markarian 463, and UGC 5101
We present spectra taken with the Infrared Spectrograph on the SpitzerSpace Telescope covering the 5-38 μm region of three ultraluminousinfrared galaxies (ULIRGs): Mrk 1014 (z=0.163), Mrk 463 (z=0.051), andUGC 5101 (z=0.039). The continua of UGC 5101 and Mrk 463 show strongsilicate absorption suggesting significant optical depths to the nucleiat 10 μm. UGC 5101 also shows the clear presence of water ice inabsorption. Polycyclic aromatic hydrocarbon (PAH) emission features areseen in both Mrk 1014 and UGC 5101, including the 16.4 μm line in UGC5101. The fine-structure lines are consistent with dominant activegalactic nucleus (AGN) power sources in both Mrk 1014 and Mrk 463. InUGC 5101 we detect the [Ne V] 14.3 μm emission line, providing thefirst direct evidence for a buried AGN in the mid-infrared. Thedetection of the 9.66 μm and 17.03 μm H2 emission linesin both UGC 5101 and Mrk 463 suggest that the warm molecular gasaccounts for 22% and 48% of the total molecular gas masses in thesegalaxies.Based on observations obtained with the Spitzer Space Telescope, whichis operated by the Jet Propulsion Laboratory, California Institute ofTechnology, under NASA contract 1407.
| Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Subtittle: Radial velocities: The Wilson-Evans-Batten catalogue.
We give a common version of the two catalogues of Mean Radial Velocitiesby Wilson (1963) and Evans (1978) to which we have added the catalogueof spectroscopic binary systems (Batten et al. 1989). For each star,when possible, we give: 1) an acronym to enter SIMBAD (Set ofIdentifications Measurements and Bibliography for Astronomical Data) ofthe CDS (Centre de Donnees Astronomiques de Strasbourg). 2) the numberHIC of the HIPPARCOS catalogue (Turon 1992). 3) the CCDM number(Catalogue des Composantes des etoiles Doubles et Multiples) byDommanget & Nys (1994). For the cluster stars, a precise study hasbeen done, on the identificator numbers. Numerous remarks point out theproblems we have had to deal with.
| Evolved GK stars near the sun. I - The old disk population
A sample of nearly two thousand GK giants with intermediate band, (R,I),DDO and Geneva photometry has been assembled. Astrometric data is alsoavailable for most of the stars. The some 800 members of the old diskpopulation in the sample yield accurate luminosities (from two sources),reddening values and chemical abundances from calibrations of thephotometric parameters. Less than one percent of the objects arepeculiar in the sense that the flux distribution is abnormal. Thepeculiarity is signaled by strong CH (and Ba II) and weak CH. The CH+stars are all spectroscopic binaries, probably with white dwarfcompanions, whereas the CH- stars are not. A broad absorption band,centered near 3500 A, is found in the CH+ stars whereas the CH- objectshave a broad emission feature in the same region. The intensity of theseabsorptions and emissions are independent of the intensity of abnormalspectral features. Ten percent of the old disk sample have a heavyelement abundance from one and a half to three times the solar value.The distribution of the heavy element abundances is nearly a normal onewith a peak near solar abundance and ranges three times to one sixthsolar. The distribution of the (U, V) velocities is independent of theheavy element abundance and does not appear to be random. Ten percent ofthe old disk stars show a CN anomaly, equally divided between CN strongand CN weak. Several stars of individual astrometric or astrophysicalimportance are isolated.
| Large and kinematically unbiased samples of G- and K-type stars. VI - Evolved stars in the Moore-Paddock-Wayman sample
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1990PASP..102..507E&db_key=AST
| Radial Velocities, Spectral Types, and Luminosity Classes of 820 Stars.
Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1950ApJ...112...48M&db_key=AST
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Besorolás csoportokba:
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Pozíciós és asztrometriai adatok
| Csillagkép: | Ökörhajcsár |
| Rektaszcenzió: | 13h57m35.21s |
| Deklináció: | +18°15'38.1" |
| Vizuális fényesség: | 7.665 |
| Távolság: | 355.872 parszek |
| RA sajátmozgás: | -38 |
| Dec sajátmozgás: | -45.2 |
| B-T magnitude: | 8.948 |
| V-T magnitude: | 7.771 |
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