- ID:
- ivo://mast.stsci/angrrr
- Title:
- Archive of Nearby Galaxies: Reduce, Reuse, Recycle (ANGRRR)
- Short Name:
- HST.ANGRRR
- Date:
- 22 Jul 2020 22:28:43
- Publisher:
- Space Telescope Science Institute Archive
- Description:
- An archive of stellar photometry for galaxies within 3.5 Mpc, excluding Local Group galaxies, based on primary and parallel wide-filter UV and optical observations taken with HST ACS/WFC or WFPC2.The sample includes all observations taken through Dec. 2008, as well as observations taken as part of Cycle 16 Supplemental GO programs 11986 and 11987. This release includes the ANGST targets within 3.5 Mpc; these observations have been rereduced using updated CTE corrections and zeropoints. Galaxies with 3.5 < D <= 5 Mpc will be included in a later release.
Number of results to display per page
Search Results
- ID:
- ivo://CDS.VizieR/J/ApJS/125/409
- Title:
- Arcsecond positions of UGC galaxies
- Short Name:
- J/ApJS/125/409
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present accurate B1950 and J2000 positions for all confirmed galaxies in the Uppsala General Catalog (UGC, Cat. <VII/26>). The positions were measured visually from Digitized Sky Survey images with rms uncertainties {sigma}<=[(1.2")^2^+({theta}/100)^2^]^1/2^, where is the major-axis diameter. We compared each galaxy measured with the original UGC description to ensure high reliability. The full position list is available in the electronic version only. the major-axis diameter. We compared each galaxy measured with the original UGC description to ensure high reliability. The full position list is available in the electronic version only.
1153. Arcturus Lab (line list)
- ID:
- ivo://CDS.VizieR/J/A+A/645/A19
- Title:
- Arcturus Lab (line list)
- Short Name:
- J/A+A/645/A19
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- High-resolution spectroscopy in the near infrared (NIR) is a powerful tool to characterise the physical and chemical properties of cool star atmospheres. The current generation of NIR echelle spectrographs enables the sampling of many spectral features over the full 0.9-2.4um range for a detailed chemical tagging. Within the Stellar Population Astrophysics Large Program at the TNG, we used a high-resolution (R=50000) NIR spectrum of Arcturus acquired with the GIANO-B echelle spectrograph as a laboratory to define and calibrate an optimal line list and new diagnostic tools to derive accurate stellar parameters and chemical abundances. We inspected several hundreds of NIR atomic and molecular lines to derive abundances of 26 different chemical species, including CNO, iron-group, alpha, Z-odd and neutron-capture elements. We then performed a similar analysis in the optical using Arcturus VLT-UVES spectra. By the combined NIR and optical analysis we defined a new thermometer and a new gravitometer for giant stars, based on the comparison of Carbon and Oxygen abundances, respectively, as derived from atomic and molecular lines. We then derived self-consistent stellar parameters and chemical abundances of Arcturus over the full 4800-24500{AA} spectral range and we compared them with previous studies in the literature. We finally discussed a number of problematic lines, which can be affected by deviations from thermal equilibrium and/or chromospheric activity, as traced by the observed variability of HeI at 10830{AA}.
- ID:
- ivo://CDS.VizieR/J/AJ/131/1184
- Title:
- A recalibration of optical photometry
- Short Name:
- J/AJ/131/1184
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- I use high-quality Hubble Space Telescope (HST) spectrophotometry to analyze the calibration of three popular optical photometry systems: Tycho-2 B_T_ and V_T_, Stromgren uvby, and Johnson UBV.
- ID:
- ivo://CDS.VizieR/J/ApJ/880/141
- Title:
- Arecibo 21cm obs. of sources in 5 GMC regions
- Short Name:
- J/ApJ/880/141
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We report Arecibo 21cm absorption-emission observations to characterize the physical properties of neutral hydrogen (HI) in the proximity of five giant molecular clouds (GMCs): Taurus, California, Rosette, Mon OB1, and NGC 2264. Strong HI absorption was detected toward all 79 background-continuum sources in the ~60x20 square degree region. Gaussian decompositions were performed to estimate temperatures, optical depths, and column densities of the cold and warm neutral medium (CNM and WNM). The properties of individual CNM components are similar to those previously observed along random Galactic sightlines and in the vicinity of molecular clouds, suggesting a universality of cold HI properties. The CNM spin temperature (Ts) histogram peaks at ~50K. The turbulent Mach numbers of CNM components vary widely, with a typical value of ~4, indicating that their motions are supersonic. About 60% of the total HI gas is WNM, and nearly 40% of the WNM lies in thermally unstable regime 500-5000K. The observed CNM fraction is higher around GMCs than in diffuse regions, and increases with increasing column density (N_HI_) to a maximum of ~75%. On average, the optically thin approximation (N_HI_^*^) underestimates the total column density by ~21%, but we find large regional differences in the relationship between N_HI_ and the required correction factor, f=N_HI_/N_HI_^*^. We examine two different methods (linear fit of f versus log_10_(N_HI_^*^) and uniform Ts) to correct for opacity effects using emission data from the GALFA-HI survey. We prefer the uniform Ts method because the linear relationship does not produce convincing fits for all subregions.
- ID:
- ivo://arecibo.cornell
- Title:
- Arecibo/Cornell Naming Authority
- Short Name:
- Arecibo
- Date:
- 17 Sep 2007 10:51:00
- Publisher:
- Cornell University
- Description:
- This resource represents the naming authority for the Arecibo data resources at Cornell University.
1157. Arecibo Dual-Beam Survey
- ID:
- ivo://CDS.VizieR/J/ApJS/130/177
- Title:
- Arecibo Dual-Beam Survey
- Short Name:
- J/ApJS/130/177
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- The Arecibo Dual-Beam Survey is a "blind" 21 cm search for galaxies covering ~430deg^2^ of sky. We present the data from the detection survey as well as from the follow-up observations to confirm detections and improve positions and flux measurements. We find 265 galaxies, many of which are extremely low surface brightness. Some of these previously uncatalogued galaxies lie within the zone of avoidance, where they are obscured by the gas and dust in our Galaxy. Eighty-one of these sources are not previously catalogued optically, and there are 11 galaxies that have no associated optical counterpart or are only tentatively associated with faint wisps of nebulosity on the Digitized Sky Survey images. We discuss the properties of the survey, and in particular we make direct determinations of the completeness and reliability of the sample. The behavior of the completeness and its dependencies is essential for determining the H I mass function. We leave the discussion of the mass function for a later paper, but do note that we find many low surface brightness galaxies and seven sources with M_HI_<10^8^M_{sun}_.
- ID:
- ivo://arecibo.cornell/hiarchive/alfalfa
- Title:
- Arecibo Legacy Fast ALFA Survey
- Short Name:
- ALFALFA
- Date:
- 08 Apr 2016 18:59:56
- Publisher:
- Cornell University
- Description:
- The Arecibo Legacy Fast ALFA extragalactic HI survey uses the Arecibo multibeam receiver to survey 7000 square degrees of high galactic latitude sky. Utilizing the high sensitivity of Arecibo, the survey will detect over 20000 HI sources in the local universe. The survey products include catalogs with extracted measurements and HI parameters, as well as integrated HI spectral profiles. The survey is currently served by NED.
- ID:
- ivo://CDS.VizieR/J/ApJS/183/214
- Title:
- Arecibo Legacy Fast Alfa Survey (ALFALFA) VIII.
- Short Name:
- J/ApJS/183/214
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present a fourth catalog of HI sources from the Arecibo Legacy Fast ALFA (ALFALFA) Survey. We report 541 detections over 136deg^2^, within the region of the sky having 22h<RA<03h and 24<DE<26{deg}. This complements a previous catalog in the region 26<DE<28{deg}. We present here the detections falling into three classes: (1) extragalactic sources with signal-to-noise ratio (S/N)>6.5, where the reliability of the catalog is better than 95%; (2) extragalactic sources 5.0<S/N<6.5 and a previously measured optical redshift that corroborates our detection; or (3) High Velocity Clouds (HVCs), or subcomponents of such clouds, in the periphery of the Milky Way. Of the 541 objects presented here, 90 are associated with HVCs, while the remaining 451 are identified as extragalactic objects. Optical counterparts have been matched with all but one of the extragalactic objects.
- ID:
- ivo://CDS.VizieR/J/AJ/133/2569
- Title:
- Arecibo legacy fast ALFA survey III.
- Short Name:
- J/AJ/133/2569
- Date:
- 21 Oct 2021
- Publisher:
- CDS
- Description:
- We present the first installment of HI sources extracted from the Arecibo Legacy Fast ALFA (ALFALFA) extragalactic survey, initiated in 2005. Sources have been extracted from three-dimensional spectral data cubes exploiting a matched filtering technique and then examined interactively to yield global HI parameters. A total of 730 HI detections are cataloged within the solid angle 11h44<RA(J2000.0)<14h00 and +12{deg}<DE(J2000.0)<+16{deg} and redshift range -1600km/s<cz<18000km/s. In comparison, the HI Parkes All-Sky Survey (HIPASS, Meyer et al. 2004, Cat. VIII/73) detected 40 HI signals in the same region. Optical counterparts are assigned via examination of digital optical imaging databases.
