cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15156/bio/sh1283983.09fu
title: SH1283983.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-95h43ow
title: 16597

description: The Space Telescope Science Institute (STScI) Director has decided to devote up to 1000 orbits of Director.s Discretionary time in observing Cycles 27-29 to a new Hubble Ultraviolet Legacy program focused on star formation and associated stellar physics. This new program comma  ULLYSES (UV Legacy Library of Young Stars as Essential Standards) comma  will provide a UV spectroscopic reference sample of young (< 10 Myr) high- and low-mass stars. It will target over virgul150 OB stars in the Magellanic Clouds and lower metallicity galaxies in the Local Group comma  and virgul40 T Tauri stars and brown dwarfs in the Milky Way. In addition comma  ULLYSES will monitor 4 typical T Tauri stars over different rotational phases through at least three rotation periods comma  and over timescales of months to years. The resulting library will provide template spectra of massive stars at metallicities substantially below the well studied comma  while the low mass sample will cover a wide range of ages comma  accretion rates comma  and masses comma  including objects down to well below 0.5 M_sun. The legacy of this large UV dataset on the first 10 Myr of stellar evolution will be enhanced by complementary datasets obtained by the scientific community. In addition to the core goals of the program related to stellar astrophysics of low and high mass stars comma  this data will also enable exciting science in the fields of ISM comma  CGM comma  jets comma  and exoplanets. ULLYSES will be modeled after the Frontier Fields programdoublePoint all data obtained will be non-proprietary. The implementation team at STScI is developing high-level science data products and a sophisticated database and website for disseminating data from the ULLYSES program and ancillary datasets for the ULLYSES target sample from space and ground-based facilities.
DOI: 10.15156/bio/sh1283984.09fu
title: SH1283984.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-98slpfz
title: 16931

description: In the nearby Universe ( <100  comma Mpc) comma  superluminous supernovae with peak luminosities brighter than  -20  comma magnitude are extremely rare comma  with only a few in total. Recently comma  the Zwicky Transient Facility discovered and classified ZTF21ackxdos comma  the closest and brightest SLSN-IIn in more than a decade ( z=0.018 comma  78  comma Mpc). Its current apparent brightness is 14.5 and 17.7 comma magnitudes in  r  and keyOpen it SwiftkeyClose  UVW2 (1928virgulAA) respectively. Such high UV fluxes offer a rare and valuable opportunity for high resolution HST-UV spectroscopy. The rich suite of narrow UV emission lines from C comma  N and O at various ionization states offer the best diagnostics to obtain reliable measurements of CNO abundances and electron density of the circumstellar medium (CSM) ejected from the surface of the SN progenitor star. This type of observations was carried out only once before for a luminous SN IIn comma  SN comma 2010jl at  z=0.01058  (Fransson et al. 2014).  The requested data will determine if the nitrogen in ZTF21ackxdos is highly enriched due to the CNO-cycle comma  similar to the case for SN comma 2010jl comma  whose progenitor is thought to be a luminous blue variable (LBV). The high resolution COS spectra can resolve the UV lines down to  la 100   comma km comma s elevkeyOpen -1keyClose   and together with the density provide a measurement of the mass loss rate comma  crucial for characterising this type of progenitors. ZTF21ackxdos will be visible by keyOpen it HSTkeyClose  on April 7 comma  2022. We request one epoch of COS and STIS observations before the supernova becomes too faint.
DOI: 10.15156/bio/sh1283985.09fu
title: SH1283985.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-9bdo4rt
title: 16799

description: We propose to create a legacy map of the southern half of M31 in the optical and near ultraviolet (NUV).  The Panchromatic Hubble Andromeda Southern Treasury (PHAST) will add virgul100 million stars to M31.s stellar photometry archive and cover regions of M31 that are structurally unique and more sensitive to the merger history than the northern disk mapped in the Panchromatic Hubble Andromeda Treasury (PHAT).   These newly mapped regions include the intersections with M32 and the giant southern stream comma  the split portion of the star forming ring comma  and the southern bar.  By providing age comma  metallicity comma  stellar mass comma  and follow-up kinematics comma  the resolved stellar photometry of these regions will be used for detailed comparisons to simulations comma  including star formation history and population asymmetries as well as the orbits of M32 and the giant southern stream comma  allowing us to distinguish between competing merger scenarios.  Thus comma  these measurements tightly constrain models of M31.s merger history and disk evolution.  Furthermore comma  the legacy value for such observations is undeniable  M31 has been and will continue to be a centerpiece target for many NASA and ESA missions comma  as well as for ground-based time-domain observations that could find extremely valuable events that require HST resolution for identifying precursors.  These current and future data sets cover the entire galaxy comma  and thus comma  our coverage will increase the value of all past and future M31 observations.  PHAST will complete a lasting baseline data set for this high-demand target that no other current or planned facility will be able to produce.
DOI: 10.57780/esa-9cnhkz8
title: 16674

description: NASA.s Double Asteroid Redirection Test (DART) mission will hit Dimorphos comma  the satellite in the binary near-Earth asteroid system (65803) Didymos in late September 2022 for a controlled asteroid impact experiment.  We request 19 orbits to observe the DART impact ejecta for a total duration of three weeks to characterize its morphology and temporal evolution comma  and to constrain the mass comma  velocity and velocity distributions comma  particle size and size frequency distributions of the ejecta.  Impact is a common and important process naturally occurring in all planetary systems and plays an important role in the evolution of planetary objects.  The DART mission is the first experiment to demonstrate asteroid impact hazard mitigation by using a kinetic impactor comma  with its primary objective being to measure the momentum transfer efficiency during asteroid impact on a realistic asteroid scale.  Although HST has observed naturally occurring impacts in the past comma  the DART impact is the first asteroid impact with precisely known impactor properties and a considerable amount of detailed knowledge about the target and impact site.  Therefore comma  the proposed observation will both greatly improve our knowledge about impacts on asteroids comma  and significantly strengthen the coordinated global observing campaign organized by the DART investigation team.  HST is the only observing facility that is capable of high-resolution comma  high sensitivity imaging of the full extent of the DART ejecta for the full duration of ejecta development and dissipation.
DOI: 10.57780/esa-9feohsw
title: 16437

description: The three nearly pure hydrogen WDs G191B2B comma  GD153 comma  and GD71 at V=12-13 mag provide the basis of the HST flux calibrations for all the HST SIs comma  but fainter secondary standards are required for the WFC3 and ACS cameras comma  for COS comma  for JWST and the Roman Telescope comma  and for the general astronomical community. In addition comma  new CCD observations in comparison with archival STIS data will provide an update for extrapolation to modern times of the ancient Goudfrooij et al. (2006) CTE correction formula. A comparison of G430L vs G430L-E1 will also aid in constraining a revised CTE correction formula. While three of these stars are well modeled with the new pure hydrogen WD grids (Bohlin et al. AJ 2020) comma   Detlev Koester has agree to provide an updated He model for WD0308-565 comma  which  provides essential extensions of the SED below 1150A for COS and into the mid-IR for JWST.  Three important faint WDs were observed in Cycle 27 (16028) with a 12 orbit allocation  but augmentation of those data is needed to achieve the minimum of three independent repeat visits that are required to average over the instrumental repeatability (Bohlin comma  Deustua comma  and de Rosa AJ 2019) and to confidently define a high S-N flux standard comma  especially for the CCD modes. These stars are WD0308-565 (V=14.07) comma  WD1057+719 (V=14.68) comma  and WD1657+343 (V=16.1). In addition comma  SDSSJ151421 (V=16.5) is a new standard from Narayan et al. (2016 comma  2019) and Calamida et al. (2019) that provides a crucial tie-in to the even fainter WD all-sky network (Program IDs 12967 comma  13711 comma  and 15113).
DOI: 10.15156/bio/sh1283986.09fu
title: SH1283986.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.15156/bio/sh1283987.09fu
title: SH1283987.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-9hmhv5x
title: 16258

description: High-redshift luminous QSOs (zvirgul6) already host billion solar masses black holes in their centers comma  and are predicted to live in high-density peaks of the dark matter distribution comma  surrounded by overdensities of galaxies. Previous searches for Lyman Alpha Emitters (LAEs) with narrow-band (NB) imaging around radio-quiet high-z QSOs did not recover such overdensities. These QSOs redshifts were determined only via broad comma  high- ionization emission lines in the rest-frame UV comma  often strongly shifted with respect to the systemic redshifts. Alternatively comma  radio-loud sources have been commonly found in rich environments comma  pinpointing the first protoclusters in the universe. Here comma  we propose HST imaging observations to search for LAEs in the field of PSO172+18 comma  the most distant radio source and the radio loudest QSO at z>6 comma  using a suite of narrow and broad band filters with WFC3 and ACS-WFC. The systemic redshift of PSO172+18 comma  z=6.823+-0.002 comma  is accurately measured from observations of the narrow MgII emission line comma  and precisely locate the Lyman Alpha emission line in the response of the narrow band filter F953N comma  uniquely available on board HST. Additionally comma  we will detect (or derive tight constraints on) the stellar emission of the QSO host galaxy comma  and search for any potential close (-kpc scale) companion.
DOI: 10.57780/esa-9p6brx8
title: 16286

description: We propose to obtain low resolution ultraviolet spectroscopy of the newly identified 1201 s orbital period detached binary J2322+0509. This is the third shortest-period detached binary known comma  and it contains two He-core white dwarfs at a virgul27 degree inclination. The low-inclination results in no visible photometric effects (e.g. comma  eclipses comma  ellipsoidal variations) comma  but makes this one of the strongest sources of gravitational waves in the mHz frequency range.  Located 760 pc from the Sun comma  this binary has an estimated LISA 4-yr signal-to-noise ratio of 40. J2322+0509 is the first He+He white dwarf LISA verification binary comma  a source class that is predicted to account for one-third of all LISA ultra-compact binary detections. Here we request HST STIS observations in the far-ultraviolet to constrain the physical parameters of this binary precisely. The optical data on this system reveals about 15% contribution from the cooler secondary white dwarf comma  limiting the precision of our model atmosphere analysis on the primary white dwarf. The primary star is hot comma  and it dominates in the far-ultraviolet. Our STIS data will enable us to constrain the temperature and mass of the primary precisely comma  which in turn will constrain the radius and mass of the secondary star comma  and the inclination of the system. Well-measured white dwarf binaries will be among the best electromagnetic + gravitational wave laboratories for understanding the formation of compact objects comma  dynamical interactions and tides in binaries. J2322+0509 is one of the best such systems.
DOI: 10.15156/bio/sh1283988.09fu
title: SH1283988.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-9qaacnz
title: 17106

description: We propose COS G130M (1096) observations of nine ultraviolet-bright star-forming galaxies lacking HST spectroscopy in the 950 - 1150 A wavelength regime. Our strategy is a dual approach to unveil the complex star formation histories of these galaxies which have archival large-aperture FUSE and longer-wavelength COS spectroscopy. Extending the existing COS coverage down to 950 A yields (i) panchromatic COS spectroscopy with matching apertures comma  and (ii) same-wavelength spectroscopy with large (FUSE) and small (COS) apertures. The galaxies were selected to cover a representative range of morphology comma  luminosity comma  chemical composition and distance. The new data will open a new spectroscopic window that has not been explored in detail with HST. Comparison with FUSE spectra will allow a study of the scales of star formation over areas differing by factors of 150. The 950 - 1150 A wavelength region contains stellar and interstellar spectral lines complementing and expanding the diagnostics at longer wavelengths. In particular comma  the strong O VI 1035 doublet with an ionization potential of 114 eV probes the highest energies powered by stellar winds. We will test and calibrate this line as a tracer of massive stars. In combination with available HST and other data we will investigate the star-formation history comma  the kinematics of the interstellar medium comma  and the effects of dust attenuation comma  including the reddening law down to near the Lyman break.
DOI: 10.15156/bio/sh1283989.09fu
title: SH1283989.09FU

description: UNITE provides a unified way for delimiting, identifying, communicating, and working with DNA-based Species Hypotheses (SH). All fungal ITS sequences in the international nucleotide sequence databases are clustered to approximately the species level by applying a set of dynamic distance values (<0.5 - 3.0%). All species hypotheses are given a unique, stable name in the form of a DOI, and their taxonomic and ecological annotations are verified through distributed, web-based third-party annotation efforts. SHs are connected to a taxon name and its classification as far as possible (phylum, class, order, etc.) by taking into account identifications for all sequences in the SH. An automatically or manually designated sequence is chosen to represent each such SH. These sequences are released (https://unite.ut.ee/repository.php) for use by the scientific community in, for example, local sequence similarity searches and next-generation sequencing analysis pipelines. The system and the data are updated automatically as the number of public fungal ITS sequences grows.
DOI: 10.57780/esa-9s8lfzn
title: 17128

description: Accurate distance measurements and unbiased cosmological constraints from Type Ia supernovae (SNe Ia) rely on proper correction for host-galaxy dust reddening that may attenuate the observed SN brightness. A correction is made by comparing observed and intrinsic color comma  and using a reddening law to determine extinction. This procedure is nontrivial since a SN.s intrinsic color correlates with its luminosity in a manner nearly indistinguishable from the effects of dust reddening at optical wavelengths.  The current standard for measuring SN distances treats both fainter-redder relations as a single SN color law. This simplification introduces a bias that depends on the relative contribution of each component. If dust properties change with galactic environment or redshift comma  equation-of-state parameter measurements may be biased by up to virgul6%. This issue is currently SN cosmology.s largest systematic uncertainty and if not addressed will prevent future cosmology experiments from meeting their goals.  The path to breaking the degeneracy between SN color and dust reddening is to extend observations to the UV and NIR comma  where the dust and intrinsic color comma  respectively comma  dominate the observed color. We propose to image 100 SNe across 2 UV comma  1 optical comma  and 4 NIR bands in a single orbit each at a phase in a SN.s evolution where the observed color scatter is small and is late enough to use non-disruptive ToOs. Simulations indicate this sample will be sufficient to constrain the environmental dependence of the dust law and reduce the size of dust-color-related systematic uncertainties to be subdominant even for future cosmological analyses with the Nancy G. Roman Space Telescope.
DOI: 10.57780/esa-9vk3chp
title: 16575

description: This program acquires a variety of WFC3-IR darks to support the removal and study of dark current. Similar to previous IR dark monitor programs comma  about a quarter of the orbits are used to periodically obtain SPARS200-full-frame dark observations. These long observations are used to monitor trends in the bad pixels (hot comma  unstable comma  or dead) comma  zeroth read level comma  and dark current. The remaining orbits collect dark ramps for generating stacked IR dark calibration files for use by the MAST pipeline. The ramps will be collected for each observing  mode at a cadence roughly scaled with the newness of the observing mode as  well as its popularity in approved recent proposals.