cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15156/bio/sh1284147.09fu
title: SH1284147.09FU

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-l075b4b
title: 17115

description: We propose obtaining COS G130M spectra of QSOs lying behind dwarf galaxies (with stellar masses of logCORCHETE_OPENM*(M_solar)CORCHETE_CLOSE < 9.0) to study the absorption lines that the galaxies. circumgalactic medium (CGM) produces along the sightlines to the background probes. The galaxies are selected to lie at low redshifts so that a range of techniques can be used to complement the results from the absorption line spectroscopy (such as 21 cm emission line mapping). We define two samples of dwarf galaxiesdoublePoint (a) SINGLE isolated dwarf  galaxies and (b) PAIRS of isolated dwarf galaxies. For both samples comma  we aim to determine the extent of the neutral and metal-enriched CGM around the galaxies comma  search for changes in the phases of the CGM with distance from the galaxies comma  and measure comma  when possible comma  the metallicity of the CGM. A principal goal is to examine whether the CGM of dwarf galaxy pairs is different from that of single dwarf galaxies  that is comma  we aim to use the sample of single dwarf galaxies as a control sample for the pairs of dwarf galaxies. This comparison will enable us to examine whether interactions between dwarf galaxies lead to substantial amounts of baryons being 'parked. in the outskirts of their CGM comma  acting as reservoirs that fuel their star formation (SF). A direct comparison between the properties of the CGM of the dwarf galaxy pairs with the single dwarf galaxies will demonstrate whether the CGM is dominated by tidal interactions or comma  instead comma  by outflows of gas instigated by the SF that the interactions ignite.
DOI: 10.15156/bio/sh1284148.09fu
title: SH1284148.09FU

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-l0y0916
title: 16920

description: Fast-approaching JWST observations of high-redshift galaxies seek to determine the contribution of low-metallicity massive stars to reionization. Yet comma  the predicted ionizing fluxes of metal-poor O stars are sensitive to uncertain comma  theoretical mass-loss rates and their downstream effects on stellar rotation and evolution. New observational constraints are required to make progress comma  but mass-loss measurements from FUV spectra of O stars in nearby galaxies below the metallicity of the SMC (20% Z_sun) remain extremely rare comma  particularly for the hottest comma  earliest spectral types that dominate the ionizing photon budget.  We propose G130M and G160M COS observations of a bright comma  early-O star in Sextans A (6% Z_sun) that was identified in NUV imaging obtained in January 2022. This is just the third known extremely metal-poor comma  early-O star in any galaxy close enough for detailed study  the other two will both be observed at low spectral resolution by ULLYSES. From these FUV spectra comma  we willdoublePoint (1) measure the star.s mass-loss rate to test extrapolation of widely used mass-loss recipes to low metallicity  (2) use weak metal line detections to determine which metal ions drive winds in the hottest metal-poor O stars  and (3) provide crucial constraints not possible at lower resolution to maximize the value of the ULLYSES spectra in Sextans A. Combined with archival and ULLYSES data comma  the proposed observations will form the first empirical benchmark for stellar models that predict the ionizing spectra of reionization-era galaxies. The proposed observations are urgently needed to interpret JWST observations of high-redshift galaxies coming this year and can only be done with HST-COS.
DOI: 10.57780/esa-l17y3hj
title: 16508

description: We request three orbits of ACS (F606W comma  F814W) and WFC3 IR (F110W comma  F160W) imaging at the location of a red supergiant star in M51 that has vanished comma  potentially as a .failed supernova. that directly collapsed into a black hole.  There is mounting evidence comma  both observational and theoretical comma  that 10-30% of core collapses do not yield a supernova explosion comma  but only one viable candidate for such a .failed supernova. event has been observed thus far.  Here comma  we have discovered a new comma  strong candidate for the disappearance of a luminous star in M51 which has been detected dozens of times with HST through late 2017.  The star had the characteristics of a 25-30 M_sun red supergiant before it faded from view (>2.0 mag) in 2019 in a crowded region of a spiral arm.  Deep HST multi-band imaging in the next few months will confirm the nature of the vanished star and rule out possible alternatives comma  such as a dust-obscured star. These observations will also constrain any fading remnant emission that may be associated with fallback accretion or an associated dust shell  depending on the results comma  this will be a prime target for further HST and JWST monitoring in future cycles. HST is the only currently available facility with the resolution and sensitivity comma  especially in the near-IR comma  necessary to perform this test. Confirmation of a second strong case for a .failed supernova. will have broad consequences comma  not only for verifying this channel of stellar death comma  but for our understanding of stellar remnants comma  chemical enrichment comma  and ultimately models of black hole formation.
DOI: 10.15156/bio/sh1284149.09fu
title: SH1284149.09FU

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-l3dcb4k
title: 17008

description: This proposal measures CTI (Charge Transfer Inefficiency) for WFC3-UVIS comma  making use of the EPER mode comma  Extended Pixel Edge Response. EPER is not unique to WFC3 (also used on ACS) and measures trailing charge in detector overscan regions increased by extended pixels. The EPER program has many cycles worth of similar comparison comma  including proposals 11924 comma  12347 comma  12691 comma  13082 comma  12565 comma  14011 comma  14377 comma  14540 comma  14989 comma  15575 comma  15720 comma  and 16400
DOI: 10.15156/bio/sh1284150.09fu
title: SH1284150.09FU

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-l3kkouy
title: 16590

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 virgul165 OB stars in the Magellanic Clouds and lower metallicity galaxies in the Local Group comma  and virgul67 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: 10.57780/esa-l3umhyq
title: 16883

description: SGR 1935+2154 is a notoriously active magnetar undergoing a period of high energy activity. Similar recent activity in 2020 elicited a series of Fast Radio Burst (FRB) like events from the source and triggered a breakthrough in our understanding of extragalactic FRB progenitors. FRBs are one of the key mysteries of recent astrophysics comma  and SGR 1935+2154 represents our chance to study the systems that produce them in unprecedented detail. HST has already contributed significantly to this goal - a near-infrared detection of the source has been made and observed to undergo significant variability. Here we propose to capitalise on results from the most recent sighting by HST of the NIR counterpart comma  which has brightened by a factor of 4 comma  to probe the origin of this emission. The origin of optical and NIR emission from magnetars is poorly known. Models range from fallback of material from a disc and magnetosphere-powered emisson comma  to surviving binary companions. Each has implications for the formation of magnetars and the nature of the emission is crucial to understand in order to motivate and inform future multi-wavelength follow-up of FRBs. Our proposed observations will obtain a NIR spectral energy distribution for SGR 1935+2154 comma  to be readily compared with models for the emission comma  in order to uncover its origin. We will also enact a cycle-long monitoring campaign to double the epochs of observations for this object comma  in order to properly understand the nature of its variability comma  and its correlation (or lack of) with activity at both higher and lower frequencies.
DOI: 10.15156/bio/sh1284151.09fu
title: SH1284151.09FU

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-l4p8oju
title: 16588

description: The standard astrometric catalog in the field of globular cluster Omega Cen has been used to examine the geometric distortion of WFC3 UVIS and IR as function of wavelength in multicycle calibration programs over last 11 years of WFC3 on HST board.  All observations from these programs have been reduced and provided the multi-wavelength geometric distortion in UVIS and IR detector.  The derived geometric distortion coefficients implemented in the IDCTAB format are used in the HST pipe-line to correct for a virgul7% distortion in WFC3-UVIS and IR images down to <1%.    Additional to multi-wavelength WFC3 geometric distortion comma  all observations  of Omega Cen taken through F606W and F160W UVIS and IR filters respectively  during the last 11 years (all together 12 epochs)  were used to look for time dependency of UVIS and IR geometric distortion and the effect of the scale change due to the thermal breathing. The results of the stability WFC3 geometric distortion published in WFC3-ISR-2015-02 (Kozhurina-Platais  and  Anderson comma  2015) comma  WFC3-ISR-2019-09 (Martlin comma  Kozhurina-Platais) comma  have show that the UVIS geometric distortion is stable over 10 years on-orbit within 0.05 pixels  or 2 mas in UVIS. The results of WFC3-IR published in WFC3-ISR-09-19 (M. McKay comma  Kozhurina-Platais comma  et al) have show that the IR geometric distorion is stable over 10 years on orbits within 0.1 pixel or 2 mas.  The same observations were used to examinate  the WFC3-UVIS and IR photometric changes with time ( WFC3-ISR-2020-05 comma  Kozhurina-Platais comma  Bagget).   The purpose of this calibration proposal is to continue the monitor of the WFC3 geometric distortion stability of over time. The observations of Omega Cen through the UVIS F606W filter and the F160W IR filter will be used to derive the skew and scale terms of the geometric distortion and look for any secular changes over time.
DOI: 10.57780/esa-l53ygdr
title: 16818

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/sh1284152.09fu
title: SH1284152.09FU

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-l5wt7eh
title: 16741

description: We propose a public UV survey of Type Ia supernova (SN Ia) host galaxies to provide environmental insights into their progenitor systems. Understanding the progenitors of SNe Ia is vital to reduce systematic uncertainties in their standardization to measure extargalactic distances and to constrain cosmological parameters. Despite surges in SN Ia discoveries comma  direct progenitor constraints are elusive comma  and so environment and host galaxy studies comma  through analysis of the coeval stellar populations comma  offer valuable alternate routes to perform large-scale population studies. UV coverage is uniquely afforded by HST and a key window into star formation and massive stellar populations. Crucially comma  the targets have been selected by having pre-existing integral-field spectroscopic (IFS) observations. Galaxy studies have undergone a resurgence with the advent of new IFS instruments comma  allowing spatially-resolved spectroscopic studies across entire galaxies comma  but suffer from a lack of wavelength coverage. The UV data proposed is essential to derive meaningful properties of young stellar populations. This will provide the age resolution in stellar population fitting to comma  for the first time comma  directly measure the delay-time-distribution of SNe Ia and assess the turn-on timescale at which the youngest SN Ia progenitors explode. Such a data set will have legacy for a multitude of galaxy studies and we are committed to making our joint UV+IFS dataset and analysis public.
DOI: 10.15156/bio/sh1284153.09fu
title: SH1284153.09FU

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-l6ghw42
title: 16735

description: Characterizing the population of the coldest known free-floating substellar members of the solar neighborhood is now possible comma  giving us the opportunity to gain key insights into the efficiency of star formation at the lowest masses as well as the chemistry of high-pressure comma  low temperature atmospheres akin to cold comma  extrasolar giant planets. As individuals comma  each of these objects represents a unique probe into the complex chemistry present in the coldest photospheres produced in the Universe.  We propose to obtain critical near-infrared F125W photometry of 12 newly discovered high proper motion comma  cold brown dwarfs in the solar neighborhood. The purpose of these observations is threefolddoublePoint 1) to constrain each target.s physical properties comma  2) produce preliminary distance estimates comma  and 3) to provide the photometry and astrometry necessary to prepare for future spectroscopic observations.  These observations will provide the vital reconnaissance needed for spectroscopic follow-up observations with HST or JWST.