Robert Minchin
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View article: Measuring the Interstellar Medium Content of Nearby, Luminous, Type 1 and Type 2 QSOs through CO and [C <scp>ii</scp>]
Measuring the Interstellar Medium Content of Nearby, Luminous, Type 1 and Type 2 QSOs through CO and [C <span>ii</span>] Open
We present observations of CO(1–0) and CO(2–1) lines from the Institut de radioastronomie millimétrique 30 m telescope toward 20 nearby, optically luminous type 2 quasars (QSO2s) and observations of the [C ii ] 158 μ m line from the Strato…
View article: The Discovery and Evolution of a Radio Continuum and Excited-OH Spectral-line Outburst in the Nearby Galaxy NGC 660
The Discovery and Evolution of a Radio Continuum and Excited-OH Spectral-line Outburst in the Nearby Galaxy NGC 660 Open
Arecibo 305 m Telescope observations between 2008 and 2018 detected a radio continuum and spectral-line outburst in the nearby galaxy, NGC 660. Excited-OH maser emission/absorption lines near 4.7 GHz, and H 2 CO absorption at 4.83 GHz vari…
View article: The discovery and evolution of a radio continuum and excited-OH spectral-line outburst in the nearby galaxy NGC 660
The discovery and evolution of a radio continuum and excited-OH spectral-line outburst in the nearby galaxy NGC 660 Open
Arecibo 305-m Telescope observations between 2008 and 2018 detected a radio continuum and spectral-line outburst in the nearby galaxy, NGC 660. Excited-OH maser emission/absorption lines near 4.7 GHz, and H$_2$CO absorption at 4.83 GHz var…
View article: Robust Nitrogen and Oxygen Abundances of Haro 3 from Optical and Infrared Emission
Robust Nitrogen and Oxygen Abundances of Haro 3 from Optical and Infrared Emission Open
Accurate chemical compositions of star-forming regions are a critical diagnostic tool to characterize the star formation history and gas flows which regulate galaxy formation. However, the abundance discrepancy factor (ADF) between measure…
View article: Characterization and Absolute Calibration of the Far-infrared Field Integral Line Spectrometer for SOFIA
Characterization and Absolute Calibration of the Far-infrared Field Integral Line Spectrometer for SOFIA Open
We present the characterization and definitive flux calibration of the Far-infrared Field Integral Line Spectrometer (FIFI-LS) instrument on board SOFIA. The work is based on measurements made in the laboratory with an internal calibrator …
View article: Shock Enhanced [C ii] Emission from the Infalling Galaxy Arp 25 <sup>∗</sup>
Shock Enhanced [C ii] Emission from the Infalling Galaxy Arp 25 <sup>∗</sup> Open
We present SOFIA observations with HAWC+ and FIFI-LS of the peculiar galaxy Arp 25, also known as NGC 2276 or UGC 3740, whose morphology is deformed by its impact with the intragroup medium of the NGC 2300 galaxy group. These observations …
View article: Shock enhanced [CII] emission from the infalling galaxy Arp 25
Shock enhanced [CII] emission from the infalling galaxy Arp 25 Open
We present SOFIA observations with HAWC+ and FIFI-LS of the peculiar galaxy Arp 25, also known as NGC 2276 or UGC 3740, whose morphology is deformed by its impact with the intra-group medium of the NGC 2300 galaxy group. These observations…
View article: Characterization and Absolute Calibration of the Far Infrared Field Integral Line Spectrometer for SOFIA
Characterization and Absolute Calibration of the Far Infrared Field Integral Line Spectrometer for SOFIA Open
We present the characterization and definitive flux calibration of the Far-Infrared Field Integral Line Spectrometer (FIFI-LS) instrument on-board SOFIA. The work is based on measurements made in the laboratory with an internal calibrator …
View article: High-resolution Observations of H i in the IC 63 Reflection Nebula
High-resolution Observations of H i in the IC 63 Reflection Nebula Open
Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by star formation on the…
View article: Accurate Chemical Abundance of Mrk 71 from Optical and Infrared Spectra
Accurate Chemical Abundance of Mrk 71 from Optical and Infrared Spectra Open
The heavy element content ("metallicity") of the Universe is a record of the total star formation history. Gas-phase metallicity in galaxies, as well as its evolution with time, is of particular interest as a tracer of accretion and outflo…
View article: The Arecibo Galaxy Environment Survey. XII. Optically Dark H i Clouds in the Leo I Group
The Arecibo Galaxy Environment Survey. XII. Optically Dark H i Clouds in the Leo I Group Open
Using data from the Arecibo Galaxy Environment Survey, we report the discovery of five H i clouds in the Leo I group without detected optical counterparts. Three of the clouds are found midway between M96 and M95, one is only from th…
View article: The Arecibo Galaxy Environment Survey XII : Optically dark HI clouds in the Leo I Group
The Arecibo Galaxy Environment Survey XII : Optically dark HI clouds in the Leo I Group Open
Using data from the Arecibo Galaxy Environment Survey, we report the discovery of five HI clouds in the Leo I group without detected optical counterparts. Three of the clouds are found midway between M96 and M95, one is only 10$^{\prime}$ …
View article: The Arecibo Galaxy Environment Survey (AGES)
The Arecibo Galaxy Environment Survey (AGES) Open
Context. Many galaxy properties are known to correlate with the environment in which the galaxies are embedded. Their cold, neutral gas content, which is usually assessed through 21 cm H I observations, is related to many other galaxy prop…
View article: Environmental Effects in Herschel Observations of the Ionized Carbon Content of Star-forming Dwarf Galaxies in the Virgo Cluster∗
Environmental Effects in Herschel Observations of the Ionized Carbon Content of Star-forming Dwarf Galaxies in the Virgo Cluster∗ Open
We use archival Herschel data to examine the singly ionized carbon ([C II ]) content of 14 star-forming dwarf galaxies in the Virgo cluster. We use spectral energy distribution fits to far-infrared, mid-infrared, near-infrared, optical, an…
View article: The Arecibo Galaxy Environment Survey (AGES) XI: the expanded Abell 1367 field. Data catalogue and HI census over the surveyed volume
The Arecibo Galaxy Environment Survey (AGES) XI: the expanded Abell 1367 field. Data catalogue and HI census over the surveyed volume Open
Many galaxy properties are known to correlate with the environment in which the galaxies are embedded. Their cold, neutral gas content, usually assessed through 21cm HI observations, is related to many other galaxy properties as it is the …
View article: SOFIA upGREAT/FIFI-LS Emission-line Observations of Betelgeuse during the Great Dimming of 2019/2020
SOFIA upGREAT/FIFI-LS Emission-line Observations of Betelgeuse during the Great Dimming of 2019/2020 Open
We report NASA-DLR SOFIA upGREAT circumstellar [O i ] 63.2 μ m and [C ii ] 157.7 μ m emission profiles and FIFI-LS [O i ] 63.2 μ m, [O i ] 145.5 μ m, and [C ii ] 157.7 μ m fluxes obtained shortly after Betelgeuse’s 2019/2020 Great Dimming …
View article: The Widefield Arecibo Virgo Extragalactic Survey: Early Results on Known Dark Sources
The Widefield Arecibo Virgo Extragalactic Survey: Early Results on Known Dark Sources Open
The Widefield Arecibo Virgo Extragalactic Survey (WAVES) was an ongoing H i survey of the Virgo Cluster with the Arecibo Observatory’s 305 m William E. Gordon Telescope at the time of its structural failure. The full 20 square degrees of t…
View article: The Future Of The Arecibo Observatory: The Next Generation Arecibo Telescope
The Future Of The Arecibo Observatory: The Next Generation Arecibo Telescope Open
The Arecibo Observatory (AO) is a multidisciplinary research and education facility that is recognized worldwide as a leading facility in astronomy, planetary, and atmospheric and space sciences. AO's cornerstone research instrument was th…
View article: Radio Recombination Line Observations Toward the Massive Star Forming Region W51 IRS1
Radio Recombination Line Observations Toward the Massive Star Forming Region W51 IRS1 Open
We observed radio recombination lines (RRLs) toward the W51 molecular cloud complex, one of the most active star forming regions in our Galaxy. The UV radiation from young massive stars ionizes gas surrounding them to produce HII regions. …
View article: The Widefield Arecibo Virgo Extragalactic Survey I: New structures in the Kent cloud complex and an extended tail on NGC 4522
The Widefield Arecibo Virgo Extragalactic Survey I: New structures in the Kent cloud complex and an extended tail on NGC 4522 Open
We are carrying out a sensitive blind survey for neutral hydrogen (HI) in the Virgo cluster and report here on the first 5° x 1° area covered, which includes two optically-dark gas features: a five-cloud HI complex (Kent et al. 2007, 2009)…
View article: Astro2020 Activities and Projects White Paper: Arecibo Observatory in the Next Decade
Astro2020 Activities and Projects White Paper: Arecibo Observatory in the Next Decade Open
The white paper discusses Arecibo Observatory's plan for facility improvements and activities over the next decade. The facility improvements include: (a) improving the telescope surface, pointing and focusing to achieve superb performance…
View article: hiss, a new tool for H i stacking: application to NIBLES spectra
hiss, a new tool for H i stacking: application to NIBLES spectra Open
H i stacking has proven to be a highly effective tool to statistically analyse average H i properties for samples of galaxies which may or may not be directly detected. With the plethora of H i data expected from the various upcoming H i s…
View article: Survey Of Ionized Gas Of The Galaxy, Made With The Arecibo Telescope (Siggma): Inner Galaxy Data Release
Survey Of Ionized Gas Of The Galaxy, Made With The Arecibo Telescope (Siggma): Inner Galaxy Data Release Open
The Survey of Ionized Gas of the Galaxy, Made with the Arecibo telescope (SIGGMA) provides a fully-sampled view of the radio recombination line (RRL) emission from the portion of the Galactic plane visible by Arecibo. Observations use the …
View article: Survey Of Ionized Gas Of The Galaxy, Made With The Arecibo Telescope (Siggma): Inner Galaxy Data Release
Survey Of Ionized Gas Of The Galaxy, Made With The Arecibo Telescope (Siggma): Inner Galaxy Data Release Open
The Survey of Ionized Gas of the Galaxy, Made with the Arecibo telescope (SIGGMA) provides a fully-sampled view of the radio recombination line (RRL) emission from the portion of the Galactic plane visible by Arecibo. Observations use the …
View article: Cross-calibration of CO- versus dust-based gas masses and assessment of the dynamical mass budget in Herschel-SDSS Stripe82 galaxies
Cross-calibration of CO- versus dust-based gas masses and assessment of the dynamical mass budget in Herschel-SDSS Stripe82 galaxies Open
We present a cross-calibration of CO- and dust-based molecular gas masses at z ≤ 0.2. Our results are based on a survey with the IRAM 30-m telescope collecting CO(1–0) measurements of 78 massive (logM⋆/M⊙> 10) galaxies with known gas-phase…
View article: Kinematic clues to the origins of starless HI clouds : dark galaxies or tidal debris?
Kinematic clues to the origins of starless HI clouds : dark galaxies or tidal debris? Open
Isolated H i clouds with no optical counterparts are often taken as evidence for galaxy–galaxy interactions, though an alternative hypothesis is that these are primordial ‘dark galaxies’ that have not formed stars. Similarly, certain kinem…
View article: NIBLES - an HI census of stellar mass selected SDSS galaxies: II. Arecibo follow-up HI observations
NIBLES - an HI census of stellar mass selected SDSS galaxies: II. Arecibo follow-up HI observations Open
We obtained Arecibo HI line follow-up observations of 154 of the 2600 galaxies in the Nançay Interstellar Baryons Legacy Extragalactic Survey (NIBLES) sample. These observations are on average four times more sensitive than the original ob…
View article: NIBLES – an HI census of stellar mass selected SDSS galaxies
NIBLES – an HI census of stellar mass selected SDSS galaxies Open
We obtained Arecibo HI line follow-up observations of 154 of the 2600 galaxies in the Nan\c{c}ay Interstellar Baryons Legacy Extragalactic Survey (NIBLES) sample. These observations are on average four times more sensitive than the origina…