- ID:
- ivo://CDS.VizieR/J/AJ/130/425
- Title:
- Catalog of distant compact groups of galaxies
- Short Name:
- J/AJ/130/425
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In this paper we present an objectively defined catalog of 459 small, high-density groups of galaxies out to z~0.2 in a region of ~6260deg^2^ in the northern sky derived from the Digitized Second Palomar Observatory Sky Survey. Our catalog extends down to r=19.0 and has a median redshift of z_med_=0.12, making it complementary to Hickson's catalog (Cat. <VII/213>) for the nearby universe (z_med_=0.03).
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- ID:
- ivo://CDS.VizieR/III/164
- Title:
- Catalog of Eq.Widths of Interstellar 217nm Band
- Short Name:
- III/164
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- (from CDS Inf. Bull. 40, 31) The main task of the catalogue consists in a comprehensive collection of equivalent widths of the 217nm band derived from both spectrophotometric and filterphotometric measurements obtained with TD-1, OAO-2 and ANS satellites. These data concern reddened O, B stars with color excesses E(B-V) >= 0.02 mag. The extinction curve is approximated by the empirical formula introduced by Guertler et al. (1982AN....303..105G) e({lambda}) = A(i/{lambda} - 1/{lambda}o)^n^ + B + C {kappa}({lambda}) The relative errors amount to about {delta}A/A = +/- 0.10, {delta}B/B = +/- 0.02 and {delta}C/C = +/- 0.03.
- ID:
- ivo://CDS.VizieR/J/ApJ/627/621
- Title:
- Catalog of Extremely Red Objects
- Short Name:
- J/ApJ/627/621
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We use a serendipitously discovered overdensity of extremely red objects (EROs) to study the morphologies and cumulative surface number density of EROs in a dense environment. Our extremely deep imaging allows us to select very faint EROs, reaching K_S_=21, or ~2mag fainter than the L* of passively evolving ellipticals at z=1.5.
- ID:
- ivo://CDS.VizieR/J/ApJS/158/193
- Title:
- Catalog of Galactic {beta} Cephei stars
- Short Name:
- J/ApJS/158/193
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present an extensive and up-to-date catalog of Galactic {beta} Cephei stars. This catalog is intended to give a comprehensive overview of observational characteristics of all known {beta} Cephei stars, covering information until 2004 June. Ninety-three stars could be confirmed to be {beta} Cephei stars. We use data from more than 250 papers published over the last nearly 100 years, and we provide over 45 notes on individual stars. For some stars we reanalyzed published data or conducted our own analyses. Sixty-one stars were rejected from the final {beta} Cephei list, and 77 stars are suspected to be {beta} Cephei stars. A list of critically selected pulsation frequencies for confirmed {beta} Cephei stars is also presented.
- ID:
- ivo://CDS.VizieR/J/ApJS/238/9
- Title:
- Catalog of giant radio sources known to date
- Short Name:
- J/ApJS/238/9
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a catalog of 349 giant radio sources (GRSs including both galaxies and quasars). The database contains all giants known to date from the literature. These GRSs cover the redshift range of 0.016<z<3.22 and include radio sources of projected linear sizes larger than 0.7Mpc, which extend up to 4.7Mpc. We provide the principal parameters (i.e., exact position of the host in the sky, redshift, angular and projected linear size, red optical magnitude, radio morphology type, total radio flux density, and luminosity) for all the sources, as well as characteristics of the sample. Based on the distribution of GRSs in the sky, we identify regions where there is a paucity of giants, so that future surveys for this type of objects could concentrate primarily in these fields. From the analysis presented here, we estimate a lower limit for the expected number of GRSs as about 2000, for the resolution and sensitivity limits of FIRST, NRAO VLA Sky Survey and Sloan Digital Sky Survey surveys. Compared with earlier compilations, there is a significant increase in the number of large giants with sizes >2Mpc, as well as those at high redshifts with z>1. We discuss aspects of their evolution and suggest that these are consistent with evolutionary models.
- ID:
- ivo://CDS.VizieR/III/29
- Title:
- Catalog of H{gamma} measures
- Short Name:
- III/29
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A catalogue of equivalent widths of H{gamma} measured by R.M. Petrie in the spectra of 1171 stars is presented. The catalogue represents a compilation of all the published and unpublished values available to us. It is shown that no systematic differences exist between the equivalent widths by Petrie and those currently being derived at the Dominion Astrophysical Observatory.
- ID:
- ivo://CDS.VizieR/J/A+A/412/633
- Title:
- Catalog of high and low SB disk galaxies
- Short Name:
- J/A+A/412/633
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We have compiled and homogenized a sample of high and low SB disk galaxies with available photometry in the B and K bands, velocity line-widths and HI integral fluxes. Several parameters that trace the luminous, baryonic and dark matter contents were inferred. We investigated how these parameters do vary with different galaxy properties, and confronted the results with predictions of galaxy evolutionary models in the context of the {Lambda} Cold Dark Matter (LCDM) cosmogony. The fractions of dark, baryonic and luminous matter inside disk sizes (for observations and models) depend mainly on the disk surface density (or brightness). We have not found significant correlations of these fractions on galaxy scale or luminosity, contrary to what has been reported in previous works, based on the analysis of rotation curve shapes. We discuss this difference and state the importance to solve the controversy. The broad agreement between the models and observations presented here favors the LCDM scenario. However, the excess of dark matter inside the optical region of disk galaxies remains as the main difficulty.
- ID:
- ivo://CDS.VizieR/J/A+A/600/A50
- Title:
- Catalog of hot subdwarf stars
- Short Name:
- J/A+A/600/A50
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- In preparation for the upcoming all-sky data releases of the Gaia mission we compiled a catalog of known hot subdwarf stars and candidates drawn from the literature and yet unpublished databases. By matching this catalog with astrometric and photometric data from the Gaia mission, we will develop selection criteria to construct a homogeneous, magnitude-limited all-sky catalog of hot subdwarf stars based on Gaia data.
- ID:
- ivo://CDS.VizieR/J/AJ/150/123
- Title:
- Catalog of 316 K giant candidates
- Short Name:
- J/AJ/150/123
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Infrared (IR) excesses around K-type red giants (RGs) have previously been discovered using Infrared Astronomy Satellite (IRAS) data, and past studies have suggested a link between RGs with overabundant Li and IR excesses, implying the ejection of circumstellar shells or disks. We revisit the question of IR excesses around RGs using higher spatial resolution IR data, primarily from the Wide-field Infrared Survey Explorer. Our goal was to elucidate the link between three unusual RG properties: fast rotation, enriched Li, and IR excess. Our sample of RGs includes those with previous IR detections, a sample with well-defined rotation and Li abundance measurements with no previous IR measurements, and a large sample of RGs asserted to be Li-rich in the literature; we have 316 targets thought to be K giants, about 40% of which we take to be Li-rich. In 24 cases with previous detections of IR excess at low spatial resolution, we believe that source confusion is playing a role, in that either (a) the source that is bright in the optical is not responsible for the IR flux, or (b) there is more than one source responsible for the IR flux as measured in IRAS. We looked for IR excesses in the remaining sources, identifying 28 that have significant IR excesses by ~20{mu}m (with possible excesses for 2 additional sources). There appears to be an intriguing correlation in that the largest IR excesses are all in Li-rich K giants, though very few Li-rich K giants have IR excesses (large or small). These largest IR excesses also tend to be found in the fastest rotators. There is no correlation of IR excess with the carbon isotopic ratio, ^12^C/^13^C. IR excesses by 20{mu}m, though relatively rare, are at least twice as common among our sample of Li-rich K giants. If dust shell production is a common by-product of Li enrichment mechanisms, these observations suggest that the IR excess stage is very short-lived, which is supported by theoretical calculations. Conversely, the Li-enrichment mechanism may only occasionally produce dust, and an additional parameter (e.g., rotation) may control whether or not a shell is ejected.
- ID:
- ivo://CDS.VizieR/J/AJ/150/42
- Title:
- Catalog of 2612 M dwarfs from LAMOST
- Short Name:
- J/AJ/150/42
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We develop a template-fit method to automatically identify and classify late-type K and M dwarfs in spectra from the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST). A search of the commissioning data, acquired in 2009-2010, yields the identification of 2612 late-K and M dwarfs. The template fit method also provides spectral classification to half a subtype, classifies the stars along the dwarf-subdwarf (dM/sdM/esdM/usdM) metallicity sequence, and provides improved metallicity/gravity information on a finer scale. The automated search and classification is performed using a set of cool star templates assembled from the Sloan Digital Sky Survey spectroscopic database. We show that the stars can be efficiently classified despite shortcomings in the LAMOST commissioning data which include bright sky lines in the red. In particular we find that the absolute and relative strengths of the critical TiO and CaH molecular bands around 7000{AA} are cleanly measured, which provides accurate spectral typing from late-K to mid-M, and makes it possible to estimate metallicity classes in a way that is more efficient and reliable than with the use of spectral indices or spectral-index based parameters such as {zeta}_TiO/CaH_. Most of the cool dwarfs observed by LAMOST are found to be metal-rich dwarfs (dM). However, we identify 52 metal-poor M subdwarfs (sdM), 5 very metal-poor extreme subdwarfs (esdM) and 1 probable ultra metal-poor subdwarf (usdM). We use a calibration of spectral type to absolute magnitude and estimate spectroscopic distances for all the stars; we also recover proper motions from the SUPERBLINK and PPMXL catalogs. Our analysis of the estimated transverse motions suggests a mean velocity and standard deviation for the UVW components of velocity to be: <U>=-9.8km/s, {sigma}_U_=35.6km/s; <V> =-22.8km/s, {sigma}_V_=30.6km/s; <W> =-7.9km/s, {sigma}_W_=28.4km/s. The resulting values are in general agreement with previous reported results, which yields confidence in our spectral classification and spectroscopic distance estimates, and illustrates the potential for using LAMOST spectra of K and M dwarfs for investigating the chemo-kinematics of the local Galactic disk and halo.
