- ID:
- ivo://CDS.VizieR/J/ApJ/755/60
- Title:
- Reverberation mapping for five Seyfert 1 galaxies
- Short Name:
- J/ApJ/755/60
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the results from a detailed analysis of photometric and spectrophotometric data on five Seyfert 1 galaxies observed as a part of a recent reverberation mapping program. The data were collected at several observatories over a 140 day span beginning in 2010 August and ending in 2011 January. We obtained high sampling-rate light curves for Mrk 335, Mrk 1501, 3C 120, Mrk 6, and PG 2130+099, from which we have measured the time lag between variations in the 5100 {AA} continuum and the H{beta} broad emission line. We then used these measurements to calculate the mass of the supermassive black hole at the center of each of these galaxies. Our new measurements substantially improve previous measurements of M_BH_ and the size of the broad line-emitting region for four sources and add a measurement for one new object. Our new measurements are consistent with photoionization physics regulating the location of the broad line region in active galactic nuclei.
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Search Results
- ID:
- ivo://CDS.VizieR/J/ApJ/795/149
- Title:
- Reverberation mapping of the Seyfert 1 NGC 7469
- Short Name:
- J/ApJ/795/149
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A large reverberation-mapping study of the Seyfert 1 galaxy NGC 7469 has yielded emission-line lags for H{beta} {lambda}4861 and He II {lambda}4686 and a central black hole mass measurement M_BH_{approx} 1x10^7^ M_{sun}_, consistent with previous measurements. A very low level of variability during the monitoring campaign precluded meeting our original goal of recovering velocity-delay maps from the data, but with the new H{beta} measurement, NGC 7469 is no longer an outlier in the relationship between the size of the H{beta}-emitting broad-line region and the luminosity of the active galactic nucleus. It was necessary to detrend the continuum and H{beta} and He II {lambda}4686 line light curves and those from archival UV data for different time-series analysis methods to yield consistent results.
- ID:
- ivo://CDS.VizieR/III/258
- Title:
- Revised and updated First Byurakan Survey (FBS)
- Short Name:
- III/258
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Eleven lists of blue stellar objects (BSOs) were published in Astrophysics in 1990-1996, found in the First Byurakan Survey (FBS) low-dispersion spectroscopic plates. The selection was carried out in the region with +33<Dec<+45 and Dec>+61 with a surface of 4000deg^2^. As a result, the catalogue of the FBS blue stellar objects (BSOs) was compiled. Its preliminary version has been available at CDS since 1999. We revised and updated the FBS BSOs catalogue with the new data from recently published optical and multiwavelength catalogues to give access to all available data and make further comparative studies of the properties of these objects possible. We made cross-correlations of the FBS BSOs catalogue with the MAPS , USNO-B1.0, SDSS, and 2MASS, as well as ROSAT, IRAS, NVSS, and FIRST catalogs , added updated SIMBAD and NED data for the objects, and provided accurate DSS1 and DSS2 positions and revised photometry. We also checked the objects for proper motion and variability. A refined classification for the low-dispersion spectra in the Digitized First Byurakan Survey (DFBS) was carried out. The revised and updated catalogue of 1103 FBS blue stellar objects is presented. The FBS blue stellar objects catalogue can be used to study a complete sample of white dwarfs, hot subdwarfs, HBB stars, cataclysmic variables, bright AGN, and to investigate individual interesting objects. This catalog supersedes the previous edition by Abrahamian et al. (Cat. II/223)
- ID:
- ivo://CDS.VizieR/J/A+A/471/127
- Title:
- Revised Bologna Catalog of M31 clusters, V.3
- Short Name:
- J/A+A/471/127
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first results of a large spectroscopic survey of candidate globular clusters located in the extreme outskirts of the nearby M 31 galaxy. The survey is aimed at ascertaining the nature of the selected candidates to increase the sample of confirmed M 31 clusters lying more that 2{deg} away from the center of the galaxy. We obtained low resolution spectra ({lambda}/{Delta}{lambda}~800-1300) of 48 targets selected from the Extended Source Catalogue of 2MASS, as in Galleti et al. (2005A&A...436..535G). The observed candidates have been robustly classified according to their radial velocity and by verifying their extended/point-source nature from ground-based optical images. We have also obtained a spectrum and a radial velocity estimate for the remote M 31 globular discovered by Martin et al. (2006MNRAS.371.1983M).
- ID:
- ivo://CDS.VizieR/J/PASP/101/360
- Title:
- Revised coordinates for SGC galaxies
- Short Name:
- J/PASP/101/360
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have determined improved positions for 373 galaxies listed in the Southern Galaxy Catalogue of Corwin, de Vaucouleurs, and de Vaucouleurs (1985, Cat. VII/116) as having poor coordinates. The revised coordinates are expected to be good to 6 arcsec (rms) in each coordinate.
- ID:
- ivo://CDS.VizieR/VII/219
- Title:
- Revised Flat Galaxy Catalogue (RFGC)
- Short Name:
- VII/219
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Flat Galaxy Catalog (FGC) is the result of a systematic search for disk-like edge-on galaxies with a diameter larger than a=40arcsec and major-to-minor axis ratio a/b>7 from Palomar Observatory and ESO/SERC surveys; it contained 4455 objects covering about 56% of the whole sky (Karachentsev et al., 1993AN....314...97K, see Cat. <VII/162>). The main reasons for preparing a new, improved and supplemented catalogue version were the following: - a possibility of remeasuring the coordinates of flat galaxies with a higher accuracy using the Digital Sky Survey; - the inclusion the data about "red" galaxy diameters which were absent earlier; - a reduction the diameters measured on the J and R films of the ESO/SERC to the diameter system of the POSS-I (near to a_25_ system) that eliminated the difference in photometric depth between two parts of the catalogue (Kudrya et al. 1997PAZh...23...15K); - a calculation of total apparent magnitudes (with a standard error about 0.25mag) for all flat galaxies basing on angular diameters, surface brightnesses, and other parameter data (Kudrya et al. 1997PAZh...23..730K); - a possibility to determine the Galaxy absorption values in the region of each flat galaxy placing using new IR data (Schlegel et al. 1998ApJ...500..525S). - a necessity to remove the faults noted during the work with the FGC data. The structural differences between old and new catalogue versions are: - both the parts, FGC and FGCE, have been joined in the RFGC (Revised Flat Galaxy Catalogue) where the galaxies are ranged according to their Right Ascensions for the epoch J2000.0; - the Addendum have been omitted; - the Notes describing concrete object characteristics have been included in the main corpus of the catalogue, some details were omitted; - the lists of identification of the FGC and the FGCE galaxies have been omitted because these data are accessible now due to different galaxy databases (NED, LEDA etc).
- ID:
- ivo://CDS.VizieR/J/AJ/152/62
- Title:
- Revised LGGS UBVRI photometry of M31 and M33 stars
- Short Name:
- J/AJ/152/62
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We describe our spectroscopic follow-up to the Local Group Galaxy Survey (LGGS) photometry of M31 and M33. We have obtained new spectroscopy of 1895 stars, allowing us to classify 1496 of them for the first time. Our study has identified many foreground stars, and established membership for hundreds of early- and mid-type supergiants. We have also found nine new candidate luminous blue variables and a previously unrecognized Wolf-Rayet star. We republish the LGGS M31 and M33 catalogs with improved coordinates, and including spectroscopy from the literature and our new results. The spectroscopy in this paper is responsible for the vast majority of the stellar classifications in these two nearby spiral neighbors. The most luminous (and hence massive) of the stars in our sample are early-type B supergiants, as expected; the more massive O stars are more rare and fainter visually, and thus mostly remain unobserved so far. The majority of the unevolved stars in our sample are in the 20-40M_{Sun}_ range.
- ID:
- ivo://CDS.VizieR/VII/1B
- Title:
- Revised New General Catalogue
- Short Name:
- VII/1B
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalog is a modern, revised, and expanded version of the original NGC (Dreyer 1888). In addition to incorporating the many corrections to the NGC found over the years, each object was verified on Palomar Observatory Sky Survey (POSS) prints and on plates for southern objects specifically taken for the purpose (although about 90 southern objects could not be verified). Please refer to the documentation by Wayne H. Warren Jr. in file "adc.doc".
- ID:
- ivo://CDS.VizieR/VII/51
- Title:
- Revised Shapley-Ames Catalog of Bright Galaxies
- Short Name:
- VII/51
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (no description available)
- ID:
- ivo://CDS.VizieR/II/326
- Title:
- Revised SWIRE photometric redshifts
- Short Name:
- II/326
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have revised the Spitzer Wide-Area Infrared Extragalactic survey (SWIRE) Photometric Redshift Catalogue to take account of new optical photometry in several of the SWIRE areas, and incorporating Two Micron All Sky Survey (2MASS) and UKIRT Infrared Deep Sky Survey (UKIDSS) near-infrared data. Aperture matching is an important issue for combining near-infrared and optical data, and we have explored a number of methods of doing this. The increased number of photometric bands available for the redshift solution results in improvements both in the rms error and, especially, in the outlier rate. We have also found that incorporating the dust torus emission into the quasi-stellar object (QSO) templates improves the performance for QSO redshift estimation. Our revised redshift catalogue contains over 1 million extragalactic objects, of which 26 288 are QSOs.