- ID:
- ivo://CDS.VizieR/J/ApJS/208/11
- Title:
- The Red MSX Source Survey: massive protostars
- Short Name:
- J/ApJS/208/11
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the Red MSX Source survey, the largest statistically selected catalog of young massive protostars and H II regions to date. We outline the construction of the catalog using mid- and near-infrared color selection. We also discuss the detailed follow up work at other wavelengths, including higher spatial resolution data in the infrared. We show that within the adopted selection bounds we are more than 90% complete for the massive protostellar population, with a positional accuracy of the exciting source of better than 2 arcsec. We briefly summarize some of the results that can be obtained from studying the properties of the objects in the catalog as a whole; we find evidence that the most massive stars form: (1) preferentially nearer the Galactic center than the anti-center; (2) in the most heavily reddened environments, suggestive of high accretion rates; and (3) from the most massive cloud cores.
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Search Results
- ID:
- ivo://CDS.VizieR/J/A+AS/116/203
- Title:
- The redshift catalogue for galaxy clusters
- Short Name:
- J/A+AS/116/203
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- An extensive redshift survey has been conducted on a sample of 15 nearby (0.01<~z<~0.05) clusters of galaxies. A total number of 860 redshifts were determined by fitting of emission-lines and/or cross-correlation techniques. Of this sample, 735 galaxies are within 0.2-0.8Mpc (H_0_=50km/s/Mpc) of the center of clusters. Approximate morphological types are available for most of the galaxies. A comparison of the present redshifts with published data allows an extensive error analysis. The agreement is excellent with the most modern data, showing a zero point error of 5km/s and an overall consistency of the measurements and their uncertainties. We estimate our redshifts to have mean random errors around 30km/s. A population analysis of the clusters will be given in a forthcoming paper.
- ID:
- ivo://CDS.VizieR/J/A+A/339/165
- Title:
- The red spectrum of HD 101065
- Short Name:
- J/A+A/339/165
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Wavelength list for Przybylski's star (a rapidly rotation Ap star) including a measurement of the line depths.
21964. The 2RE Source Catalogue
- ID:
- ivo://CDS.VizieR/J/MNRAS/274/1165
- Title:
- The 2RE Source Catalogue
- Short Name:
- J/MNRAS/274/1165
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (no description available)
- ID:
- ivo://CDS.VizieR/II/94
- Title:
- The Revised AFGL (RAFGL) Catalogue
- Short Name:
- II/94
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The catalog (RAFGL) contains the results of extensive verification and photometric studies of AFGL sources performed since the publication of "The AFGL Four Color Infrared Sky Survey: Catalog of Observations at 4.2, 11.0, 19.8, and 27.4 micrometers" (AFGL, Price and Walker 1976) as well as recent survey measurements with larger instruments. Improved positions and more extensive photometry have been provided by ground-based searches for the RAFGL objects and questions about unconfirmed sources from early investigations of the AFCRL Infrared Sky Survey (Walker and Price 1975) have, for the most part, been resolved. Many of the spurious sources were eliminated from the AFGL catalog in the reanalysis by including a rescan confirmation criterion in addition to the signal-to-noise gate used for the AFCRL catalog. The RAFGL is a revision of AFGL to include more accurate information and to provide identifications and improved positions for unidentified AFGL sources.
- ID:
- ivo://CDS.VizieR/J/ApJ/729/L5
- Title:
- The revised orbit of the {delta} Sco system
- Short Name:
- J/ApJ/729/L5
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In anticipation of the possible collision between a circumstellar disk and the secondary star in the highly eccentric binary system {delta} Scorpii, high angular resolution interferometric observations have been acquired, aimed at revising the binary parameters. The Navy Prototype Optical Interferometer was used to spatially resolve the binary components in 2000 and over a period between 2005 and 2010. The interferometric observations are used to obtain the angular separations and orientations of the two stellar components at all epochs for which data have been obtained, including 2005 and 2006, for which, based on previous studies, there was some uncertainty as to if the signature of binarity can be clearly detected. The results of this study represent the most complete and accurate coverage of the binary orbit of this system to date and allow for the revised timing of the upcoming periastron passage that will occur in 2011 to be obtained.
- ID:
- ivo://CDS.VizieR/J/AJ/161/233
- Title:
- The revised TESS habitable zone catalog
- Short Name:
- J/AJ/161/233
- Date:
- 20 Jan 2022
- Publisher:
- CDS
- Description:
- In the search for life in the cosmos, NASA's Transiting Exoplanet Survey Satellite (TESS) mission has already monitored about 74% of the sky for transiting extrasolar planets, including potentially habitable worlds. However, TESS only observed a fraction of the stars long enough to be able to find planets like Earth. We use the primary mission data-the first two years of observations-and identify 4239 stars within 210pc that TESS observed long enough to see three transits of an exoplanet that receives similar irradiation to Earth: 738 of these stars are located within 30pc. We provide reliable stellar parameters from the TESS Input Catalog that incorporates Gaia DR2 and also calculate the transit depth and radial velocity semiamplitude for an Earth-analog planet. Of the 4239 stars in the Revised TESS HZ Catalog, 9 are known exoplanet hosts-GJ1061, GJ1132, GJ3512, GJ685, Kepler-42, LHS1815, L98-59, RRCae, and TOI700-around which TESS could identify additional Earth-like planetary companions. Thirty-seven additional stars host yet unconfirmed TESS Objects of Interest: three of these orbit in the habitable-zone TOI203, TOI715, and TOI2298. For a subset of 614 of the 4239 stars, TESS has observed the star long enough to be able to observe planets throughout the full temperate, habitable zone out to the equivalent of Mars orbit. Thus, the Revised TESS Habitable Zone Catalog provides a tool for observers to prioritize stars for follow-up observation to discover life in the cosmos. These stars are the best path toward the discovery of habitable planets using the TESS mission data.
- ID:
- ivo://CDS.VizieR/J/MNRAS/446/3895
- Title:
- The rising light curves of Type Ia supernovae
- Short Name:
- J/MNRAS/446/3895
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present an analysis of the early, rising light curves of 18 Type Ia supernovae (SNe Ia) discovered by the Palomar Transient Factory and the La Silla-QUEST variability survey. We fit these early data flux using a simple power law (f(t)={alpha}xt^n^) to determine the time of first light (t_0_), and hence the rise time (t_rise_) from first light to peak luminosity, and the exponent of the power-law rise (n). We find a mean uncorrected rise time of 18.98+/-0.54 d, with individual supernova (SN) rise times ranging from 15.98 to 24.7 d. The exponent n shows significant departures from the simple `fireball model' of n=2 (or f(t){prop.to}t^2^) usually assumed in the literature. With a mean value of n=2.44+/-0.13, our data also show significant diversity from event to event. This deviation has implications for the distribution of ^56^Ni throughout the SN ejecta, with a higher index suggesting a lesser degree of ^56^Ni mixing. The range of n found also confirms that the ^56^Ni distribution is not standard throughout the population of SNe Ia, in agreement with earlier work measuring such abundances through spectral modelling. We also show that the duration of the very early light curve, before the luminosity has reached half of its maximal value, does not correlate with the light-curve shape or stretch used to standardize SNe Ia in cosmological applications. This has implications for the cosmological fitting of SN Ia light curves.
- ID:
- ivo://CDS.VizieR/J/A+A/623/A21
- Title:
- Thermal dust modified black-body parameter maps
- Short Name:
- J/A+A/623/A21
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Planck data releases have provided the community with submillimetre and full-sky radio observations at unprecedented resolutions. We make use of the Planck 353, 545, and 857GHz maps alongside the IRAS 3000 GHz map. These maps contain information on the cosmic microwave background (CMB), cosmic infrared background (CIB), extragalactic point sources, and diffuse thermal dust emission. We aim to determine the modified black-body (MBB) model parameters of thermal dust emission in total intensity and produce all-sky maps of pure thermal dust, having separated this Galactic component from the CMB and CIB. This separation is completed using a new, sparsity-based, parametric method, Parameter Recovery Exploiting Model Informed Sparse Estimates (premise). The method is comprised of three main stages: 1) filtering the raw data to reduce the effect of the CIB on the MBB fit; 2) fitting an MBB model to the filtered data across super-pixels of various sizes determined by the algorithm itself; and 3) refining these super-pixel estimates into full-resolution maps of the MBB parameters. We present our maps of MBB temperature, spectral index, and optical depth at 5-arcmin resolution and compare our estimates to those of GNILC and to the two-step MBB fit presented by the Planck collaboration in 2013. By exploiting sparsity we avoid the need for smoothing, enabling us to produce the first full-resolution MBB parameter maps from intensity measurements of thermal dust emission.We consider the premise parameter estimates to be competitive with the existing state-of-the-art solutions, outperforming these methods within low signal-to-noise regions as we account for the CIB without removing thermal dust emission through oversmoothing.
- ID:
- ivo://CDS.VizieR/J/A+A/386/1001
- Title:
- Thermal emission from low-field neutron stars
- Short Name:
- J/A+A/386/1001
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a new grid of LTE model atmospheres for weakly magnetic (B<~10^10^G) neutron stars, using X opacity and equation of state data from the OPAL project and employing a fully frequency- and angle-dependent radiation transfer. Model spectra for low-field neutron stars with three different photospheric compositions are presented: (1) pure hydrogen atmospheres, (2) atmospheres with solar abundances, and (3) pure iron atmospheres. Each grid covers 29 effective temperatures log(Teff[K])=5.10-6.50 in steps of 0.05. The model spectra are tabulated as angle-averaged unredshifted (surface) Eddington fluxes. All spectra have been calculated for a canonical neutron star configuration, M_ns_=1.4M_{sun}_, R_ns_=10km, corresponding to a surface gravitational acceleration of log(g)=14.386. The same model grids are also available as XSPEC tables at http://legacy.gsfc.nasa.gov/docs/xanadu/xspec/models/gbr.html
