- ID:
- ivo://CDS.VizieR/J/A+A/432/851
- Title:
- Distance of 72 Galactic globular clusters
- Short Name:
- J/A+A/432/851
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present distance modulus and reddening determinations for 72 Galactic globular clusters from the homogeneous photometric database of Piotto et al. (2002, cat. <J/A+A/391/945>), calibrated to the HST flight F439W and F555W bands. The distances have been determined by comparison with theoretical absolute magnitudes of the ZAHB. For low and intermediate metallicity clusters, we have estimated the apparent Zero Age Horizontal Branch (ZAHB) magnitude from the RR Lyrae level. For metal rich clusters, the ZAHB magnitude was obtained from the fainter envelope of the red HB. Reddenings have been estimated by comparison of the HST colour-magnitude diagrams (CMD) with ground CMDs of template clusters with low reddening. The homogeneity of both the photometric data and the adopted methodological approach allowed us to obtain highly accurate relative cluster distances and reddenings. Our results are also compared with recent compilations in the literature. Description:
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Search Results
- ID:
- ivo://CDS.VizieR/J/A+A/646/A74
- Title:
- Distance of HiGAL sources
- Short Name:
- J/A+A/646/A74
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Distances are key to determine the physical properties of sources. In the Galaxy, large (>10000) homogeneous samples of sources for which distance are available, covering the whole galactic distance range, are still missing. Here we present a catalog of velocity and distance for a large sample (>100000) of Hi-GAL compact sources. We develop a fully automatic Python-package to extract the velocity and determine the distance. To assign a velocity to a Hi-GAL compact source, the code uses all the available spectroscopic data complemented by a morphological analysis. Once the velocity is determined, if no stellar or maser parallax distance is known, the kinematic distance is calculated and the distance ambiguity (for sources located inner the Solar circle) is solved with the HII self-absorption method or from distance-extinction data. Among the 150223 compact sources of the Hi-GAL catalog, we obtained a distance for for 124069 sources for the 5-sigma catalog (and 128351 sources for the 3-sigma catalog), where sigma represents the noise level of each molecular spectrum used for the lines detection made at 5-sigma and 3-sigma, to produce the respective catalog.
- ID:
- ivo://CDS.VizieR/J/A+A/478/507
- Title:
- Distances and atmospheric parameters of MSU stars
- Short Name:
- J/A+A/478/507
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Recent analyses of low-mass eclipsing binary stars have unveiled a significant disagreement between the observations and the predictions of stellar structure models. Results show that theoretical models underestimate the radii and overestimate the effective temperatures of low-mass stars but yield luminosities that accord with observations. A hypothesis based upon the effects of stellar activity was put forward to explain the discrepancies. Here we study the existence of the same trend in single active stars and provide a consistent scenario to explain systematic differences between active and inactive stars in the H-R diagram reported earlier. The analysis is done using single field stars of spectral types late-K and M and computing its bolometric magnitudes and temperatures through infrared colours and spectral indices. The properties of the stars in samples of active and inactive stars are compared statistically to reveal systematic differences. After accounting for a number of possible bias effects, active stars are shown to be cooler than inactive stars of similar luminosity therefore implying a larger radius as well, in proportions that are in excellent agreement with those found from eclipsing binaries. The present results generalise the existence of strong radius and temperature dependences on stellar activity to the entire population of low-mass stars, regardless of their membership in close binary systems.
- ID:
- ivo://CDS.VizieR/J/PAZh/34/278
- Title:
- Distances and extinction of Galactic novae
- Short Name:
- J/PAZh/34/278
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- Using photometric data for Galactic novae, we compared the Sharov (1963AZh....40..900S) and Schlegel et al. (1998ApJ...500..525S) interstellar extinction maps. We found the distances and extinctions for 64 novae.
- ID:
- ivo://CDS.VizieR/J/A+A/550/A125
- Title:
- Distances and kinematics with CoRoT stars
- Short Name:
- J/A+A/550/A125
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We use kinematical and chemical properties of 754 CoRoT stars to characterise the stellar populations of the Milky Way disc in three beams close the Galactic plane. From the atmospheric parameters derived in Gazzano et al. (2010, Cat. J/A+A/523/A91) with the MATISSE algorithm, we derived stellar distances using isochrones. Combining these data with proper motions, we provide the complete kinematical description of stars in three CoRoT fields. Finally, we used kinematical criteria to identify the Galactic populations in our sample and study their characteristics, particularly their chemistry.
- ID:
- ivo://CDS.VizieR/J/ApJS/136/463
- Title:
- Distances and metallicities of HVCs and IVCs
- Short Name:
- J/ApJS/136/463
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- A table is presented that summarizes published absorption line measurements for the high- and intermediate-velocity clouds (HVCs and IVCs). New values are derived for N(HI) in the direction of observed probes, in order to arrive at reliable abundances and abundance limits (the HI data are described in Paper II, Wakker et al., 2001ApJS..136..537W). Distances to stellar probes are revisited and calculated consistently, in order to derive distance brackets or limits for many of the clouds, taking care to properly interpret nondetections.
- ID:
- ivo://CDS.VizieR/J/AZh/74/853
- Title:
- Distances and physical parameters of PNe
- Short Name:
- J/AZh/74/853
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The distances and parameters of the central stars and the optical depth of envelopes in the Lyman limits of neutral hydrogen and neutral helium were determined in a self-consistent way for 170 galactic planetary nebulae. The generalized energy-balance method was used (Mal'kov, 1994KFNT...10e..35M).
- ID:
- ivo://CDS.VizieR/J/ApJS/256/46
- Title:
- Distances & color excesses of high gal. mol. clouds
- Short Name:
- J/ApJS/256/46
- Date:
- 03 Mar 2022 14:08:03
- Publisher:
- CDS
- Description:
- Based on the accurate color excess E_GBP,GRP_ of more than 4 million stars and the E_NUV,GBP_ of more than 1 million stars from Paper I (Sun+, 2021ApJS..254...38S), the distance and extinction of the molecular clouds (MCs) in the Magnani-Blitz-Mundy (MBM; 1985ApJ...295..402M) catalog at |b|>20{deg} are studied in combination with the distance measurement of Gaia/EDR3. The distance, as well as the color excess, is determined for 66 MCs. The color excess ratio E_NUV,GBP_/E_GBP,GRP_ is derived for 39 of them, which is obviously larger and implies more small particles at smaller extinction. In addition, the scale height of the dust disk is found to be about 100 pc and becomes large at the anticenter direction due to the disk flaring.
- ID:
- ivo://CDS.VizieR/J/MNRAS/487/2061
- Title:
- Distances for 2062 nearby spiral galaxies
- Short Name:
- J/MNRAS/487/2061
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the final distance measurements for the 2MASS Tully-Fisher (2MTF) survey. The final 2MTF catalogue contains 2062 nearby spiral galaxies in the CMB frame velocity range of 600<cz<10000km/s with a mean velocity of 4805km/s. The main update in this release is the replacement of some archival HI data with newer ALFALFA data. Using the 2MTF template relation, we calculate the distances and peculiar velocities of all 2MTF galaxies. The mean uncertainties of the linear distance measurements are around 22 per cent in all three infrared bands. 2MTF measurements agree well with the distances from the Cosmicflows-3 compilation, which contains 1117 common galaxies, including 28 with SNIa distance measurements. Using distances estimated from the '3-bands combined' 2MTF sample and a {chi}^2^ minimization method, we find best-fitting bulk flow amplitudes of 308+/-26km/s, 318+/-29km/s, and 286+/-25km/s at depths of R_I_=20, 30 and 40h^-1^Mpc, respectively, which is consistent with the {LAMNDA}CDM model and with previous 2MTF results with different estimation techniques and a preliminary catalogue.
- ID:
- ivo://CDS.VizieR/J/MNRAS/422/3178
- Title:
- Distances of 793 BGPS sources
- Short Name:
- J/MNRAS/422/3178
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- By positional matching to the catalogue of Galactic Ring Survey molecular clouds, we have derived distances to 793 Bolocam Galactic Plane Survey (BGPS) sources out of a possible 806 located within the region defined by Galactic longitudes l=28.5{deg}-31.5{deg} and latitudes |b|<=1{deg}. This section of the Galactic plane contains several major features of Galactic structure at different distances, mainly mid-arm sections of the Perseus and Sagittarius spiral arms and the tangent of the Scutum-Centaurus arm, which is coincident with the end of the Galactic long bar. By utilizing the catalogued cloud distances plus new kinematic distance determinations, we are able to separate the dense BGPS clumps into these three main line-of-sight components to look for variations in star formation properties that might be related to the different Galactic environments. We find no evidence of any difference in either the clump mass function or the average clump formation efficiency (CFE) between these components that might be attributed to environmental effects on scales comparable to Galactic structure features.