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1721. HST WFPC2 star clusters in M31. III.
ID:
ivo://CDS.VizieR/J/PASP/122/745
Title:
HST WFPC2 star clusters in M31. III.
Short Name:
J/PASP/122/745
Date:
21 Oct 2021
Publisher:
CDS
Description:
This paper describes the results of a Hubble Space Telescope (HST) WFPC2 search for star clusters in active star-formation regions of M31. Nine of the clusters were previously cataloged and 77 are new. Our 23 fields cover key areas of the galaxy's recent star-formation activity. We provide a catalog of positions and integrated magnitudes in four colors, taken with the 336W, 439W, 555W, and 814W filters of the HST.
1722. HST/WFPC survey of M31 bright young clusters
ID:
ivo://CDS.VizieR/J/AJ/138/770
Title:
HST/WFPC survey of M31 bright young clusters
Short Name:
J/AJ/138/770
Date:
21 Oct 2021
Publisher:
CDS
Description:
We report on the properties of 89 low-mass star clusters located in the vicinity of luminous young clusters ("blue globulars") in the disk of M31. Eighty-two of the clusters are newly detected. We have determined their integrated magnitudes and colors, based on a series of Hubble Space Telescope (HST)/Wide Field Planetary Camera 2 exposures in blue and red (HST filters F450W and F814W).
1723. Hubble Deep Field catalog of color-based redshift
ID:
ivo://CDS.VizieR/J/AJ/116/2081
Title:
Hubble Deep Field catalog of color-based redshift
Short Name:
J/AJ/116/2081
Date:
21 Oct 2021
Publisher:
CDS
Description:
We derive simple empirical color-redshift relations for z<~4 galaxies in the Hubble Deep Field (HDF) using a linear function of three photometric colors (U-B, B-V, V-I). The dispersion between the estimated redshifts and the spectroscopically observed ones is small for relations derived in several separate color regimes; the dispersions range from {sigma}_z_~=0.03 to 0.1 for z<~2 galaxies, and from {sigma}_z_~=0.14 to 0.25 for z>~2 galaxies. We apply the color-redshift relations to the HDF photometric catalog and obtain estimated redshifts that are consistent with those derived from spectral template fitting methods. The advantage of these color-redshift relations is that they are simple and easy to use and do not depend on the assumption of any particular spectral templates; they provide model independent redshift estimates for z<~4 galaxies using only multiband photometry, and they apply to about 90% of all galaxies. We provide a color-based estimated redshift catalog of HDF galaxies to z<~4. We use the estimated redshifts to investigate the redshift distribution of galaxies in the HDF; we find peaks in the redshift distribution that suggest large-scale clustering of galaxies to at least z~1 and that are consistent with those identified in spectroscopic probes of the HDF.
1724. Hubble Deep Field near-IR obs.
ID:
ivo://CDS.VizieR/J/AJ/117/17
Title:
Hubble Deep Field near-IR obs.
Short Name:
J/AJ/117/17
Date:
21 Oct 2021
Publisher:
CDS
Description:
This paper presents data obtained during the NICMOS Guaranteed Time Observations of a portion of the Hubble Deep Field. The data are in a catalog format similar to the publication of the original WFPC2 Hubble Deep Field program (Williams et al., 1996, Cat. <J/AJ/112/1335>). The catalog contains 342 objects in a 49.1"x48.4" subfield of the total observed field, 235 of which are considered coincident with objects in the WFPC2 catalog. The 3{sigma} signal-to-noise ratio level is at an aperture AB magnitude of approximately 28.8 at 1.6{mu}m. The catalog sources, listed in order of right ascension, are selected to satisfy a limiting signal-to-noise ratio criterion of greater than or equal to 2.5. This introduces a few false detections into the catalog, and users should take careful note of the completeness and reliability levels for the catalog discussed in sections 9 and 10. The catalog also contains a test parameter indicating the results of half-catalog tests and the degree of coincidence with the original WFPC2 catalog.
1725. Hubble Deep Field observations
ID:
ivo://CDS.VizieR/J/AJ/112/1335
Title:
Hubble Deep Field observations
Short Name:
J/AJ/112/1335
Date:
21 Oct 2021
Publisher:
CDS
Description:
The Hubble Deep Field (HDF) is a Director's Discretionary program on HST in Cycle 5 to image an undistinguished field at high Galactic latitude in four passbands as deeply as reasonably possible. These images provide the most detailed view to date of distant field galaxies and are likely to be important for a wide range of studies in galaxy evolution and cosmology. In order to optimize observing in the time available, a field in the northern continuous viewing zone was selected and images were taken for ten consecutive days, or approximately 150 orbits. Shorter 1-2 orbit images were obtained of the fields immediately adjacent to the primary HDF in order to facilitate spectroscopic follow-up by ground- based telescopes. The observations were made from 1995 December 18-30, and both raw and reduced data have been put in the public domain as a community service. We present a summary of the criteria for selecting the field, the rationale behind the filter selection and observing times in each band, and the strategies for planning the observations to maximize the exposure time while avoiding Earth-scattered light. Data reduction procedures are outlined, and images of the combined frames in each band are presented. Objects detected in these images are listed in a catalog with their basic photometric parameters.
1726. Hubble Deep Field surface photometry
ID:
ivo://CDS.VizieR/J/A+AS/129/583
Title:
Hubble Deep Field surface photometry
Short Name:
J/A+AS/129/583
Date:
21 Oct 2021
Publisher:
CDS
Description:
The detailed surface photometry of a sample of early-type galaxies in the Hubble Deep Field is presented as part of a long-term project aimed to settle strong observational constraints to the theories modelling the evolution of elliptical galaxies from the early stages. The sample has been extracted, in the V_606_ band, from the database provided by the ESO-STECF-HDF Group (Couch, 1996, <http://ecf.hq.eso.org>). The selection criteria involve the total magnitude, the number of pixels detected above the background level and an automatic star/galaxy classifier. Moreover, form visual inspection of the frames, we excluded the galaxies showing unambiguous late-type morphology. The analysis of the luminosity and geometrical profiles, carried out on the 162 candidates obeying our selection criteria, resulted in a list of 99 'bona fide' early-type galaxies, for which accurate total magnitudes and effective radii were computed on the basis of the equivalent luminosity profiles. The comparison with the magnitudes given by Williams et al. (1996, Cat. <J/AJ/112/1335>) indicates that the automated photometry tends to underestimate the total luminosity of the ellipticals. The luminosity profiles of most of galaxies in our sample follow fairly well the de~Vaucouleurs law ('Normal' profiles). However, a relevant fraction of galaxies, even following the r^1/4^ law in the main body light distribution, exhibit in the inner region a flattening of the luminosity profile not attributable to the PSF (`Flat' profiles) or, in some cases, a complex (multi-nucleus) structure (`Merger' profiles). A statistically significant correlation is found between the shapes of the luminosity profiles and the ellipticity distribution. In particular, the average ellipticity of galaxies belonging to the `Flat' and `Merger' classes is significantly higher than that of the `Normal' galaxies. Finally, even taken into account the relevant uncertainty of the outer position angle profiles, the amount of isophotal twisting of HDF ellipticals turns out to be significantly larger with respect to that of the local samples.
1727. Hubble Infrared Pure Parallel Imaging Extragalactic Survey (HIPPIES)
ID:
ivo://mast.stsci/hippies
Title:
Hubble Infrared Pure Parallel Imaging Extragalactic Survey (HIPPIES)
Short Name:
HST.HIPPIES
Date:
22 Jul 2020 22:31:09
Publisher:
Space Telescope Science Institute Archive
Description:
Hubble Infrared Pure Parallel Imaging Extragalactic Survey (HIPPIES) utilizes long-duration pure parallel visits (~> 3 orbits) of HST at high Galactic latitude (|b|>20o) to take deep, multi-band images in WFC3 (since Cycle 17) and in ACS (starting Cycle 18). It is unique in its large number of descrete fields along random sightlines, and thus is complementary to other surveys over contiguous fields but along limited sightlines.
1728. Hubble Source Catalog Detailed Search
ID:
ivo://archive.stsci.edu/hst/hsc
Title:
Hubble Source Catalog Detailed Search
Short Name:
HSC
Date:
30 Oct 2024 18:53:53
Publisher:
Space Telescope Science Institute Archive
Description:
The Hubble Source Catalog (HSC) is designed to optimize science from the Hubble Space Telescope by combining the tens of thousands of visit-based source lists in the Hubble Legacy Archive (HLA) into a single master catalog. The Hubble Source Catalog (HSC) detailed search displays an entry for each separate detection (or nondetection if nothing is found at that position) using all the relevant Hubble observations for a given object (i.e., different filters, detectors, separate visits). The catalog currently contains over 100 million entries.
1729. Hubble Source Catalog Summary Search
ID:
ivo://archive.stsci.edu/hst/hsc_sum
Title:
Hubble Source Catalog Summary Search
Short Name:
HSC_SUM
Date:
30 Oct 2024 18:54:13
Publisher:
Space Telescope Science Institute Archive
Description:
The Hubble Source Catalog (HSC) is designed to optimize science from the Hubble Space Telescope by combining the tens of thousands visit-based source lists in the Hubble Legacy Archive (HLA) into a single master catalog. The HSC Summary search displays a single row entry for each object, as defined by a set of detections that have been cross-matched and hence are believed to be a single object. Averaged values for magnitudes and other relevant parameters are provided. The catalog currently contains over 16 million entries.
1730. Hubble Space Telescope
ID:
ivo://archive.stsci.edu/hst
Title:
Hubble Space Telescope
Short Name:
HST
Date:
23 Jul 2020 19:47:19
Publisher:
Space Telescope Science Institute Archive
Description:
Hubble Space Telescope (HST) is an orbiting astronomical observatory operating from the near-infrared into the ultraviolet. Launched in 1990 and scheduled to operate through 2010, HST carries and has carried a wide variety of instruments producing imaging, spectrographic, astrometric, and photometric data through both pointed and parallel observing programs. MAST is the primary archive and distribution center for HST data, distributing science, calibration, and engineering data to HST users and the astronomical community at large. Over 100 000 observations of more than 20 000 targets are available for retrieval from the Archive.

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