Sean Points
YOU?
Author Swipe
View article: Discovery of a nova super-remnant surrounding the recurrent nova LMCN 1971-08a in the Large Magellanic Cloud
Discovery of a nova super-remnant surrounding the recurrent nova LMCN 1971-08a in the Large Magellanic Cloud Open
A nova super-remnant (NSR) is a greatly-extended structure grown by repeated nova eruptions sweeping the surrounding material away from a nova into a dense outer shell and are predicted to form around all novae. To date, four NSRs are know…
View article: IRAS 16475–4609: A Young Compact H <scp>II</scp> Region Sculpting its Molecular Environment
IRAS 16475–4609: A Young Compact H <span>II</span> Region Sculpting its Molecular Environment Open
We present a near-infrared spectroscopic and imaging analysis of the star-forming region IRAS 16475−4609, based on TripleSpec/SOAR spectroscopy and NEWFIRM/CTIO imaging, complemented by archival radio and submillimeter data. Our spectrosco…
View article: Studying the multiphase interstellar medium in the Large Magellanic Cloud with <i>SRG</i>/eROSITA
Studying the multiphase interstellar medium in the Large Magellanic Cloud with <i>SRG</i>/eROSITA Open
Context . The Large Magellanic Cloud (LMC), being a nearby and actively star-forming satellite galaxy of the Milky Way, is an ideal site to observe the multiphase interstellar medium (ISM) of a galaxy across the electromagnetic spectrum. A…
View article: IRAS 16475-4609: A Young Compact HII Region Sculpting Its Molecular Environment
IRAS 16475-4609: A Young Compact HII Region Sculpting Its Molecular Environment Open
We present a near-infrared spectroscopic and imaging analysis of the star-forming region IRAS 16475-4609, based on TripleSpec/SOAR spectroscopy and NEWFIRM/CTIO imaging, complemented by archival radio and sub-millimeter data. Our spectrosc…
View article: Free-floating planetary mass objects in LDN 1495 from Euclid Early Release Observations
Free-floating planetary mass objects in LDN 1495 from Euclid Early Release Observations Open
Context . Substellar objects, including brown dwarfs and free-floating planetary-mass objects, are a significant product of star formation. Their sensitivity to initial conditions and early dynamical evolution makes them especially valuabl…
View article: Supernova remnants on the outskirts of the Large Magellanic Cloud
Supernova remnants on the outskirts of the Large Magellanic Cloud Open
When a star dies, it can explode in a supernova, causing a strong shock wave and forming an interstellar object called a supernova remnant (SNR). Observational studies of SNRs allow us to learn about the different types of progenitors, the…
View article: First study of the supernova remnant population in the Large Magellanic Cloud with eROSITA
First study of the supernova remnant population in the Large Magellanic Cloud with eROSITA Open
Aims . The all-sky survey carried out by the extended Roentgen Survey with an Imaging Telescope Array (eROSITA) on board Spektrum-Roentgen-Gamma (Spektr-RG, SRG) has provided spatially and spectrally resolved X-ray data of the entire Large…
View article: The Dark Energy Camera Magellanic Clouds Emission-line Survey
The Dark Energy Camera Magellanic Clouds Emission-line Survey Open
We have used the Dark Energy Camera (DECam) on the CTIO Blanco 4 m telescope to perform a new emission-line survey of the Large Magellanic Cloud (LMC) using narrowband H α and [S ii ] filters in addition to a continuum band to create pure …
View article: <i>Euclid</i>: Early Release Observations – A glance at free-floating newborn planets in the σ Orionis cluster
<i>Euclid</i>: Early Release Observations – A glance at free-floating newborn planets in the σ Orionis cluster Open
We provide an early assessment of the imaging capabilities of the Euclid space mission to deeply probe nearby star-forming regions and associated very young open clusters, and in particular, to determine to which extent it can shed light i…
View article: Multiwavelength study of the HII region LHA 120-N11 in the Large Magellanic Cloud with eROSITA
Multiwavelength study of the HII region LHA 120-N11 in the Large Magellanic Cloud with eROSITA Open
Aims. We studied the diffuse X-ray emission around the H II region LHA 120-N11, which is one of the most active star-forming regions in the Large Magellanic Cloud. We want to determine the nature of the diffuse X-ray emission and improve o…
View article: All-sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample
All-sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample Open
Hot DA white dwarfs (DAWDs) have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are fully characterized by their effective temperature T eff and surface gravity , which can …
View article: The Large Magellanic Cloud Supernova Remnant MCSNR J0550-6823
The Large Magellanic Cloud Supernova Remnant MCSNR J0550-6823 Open
We describe radio, optical, and X-ray observations of this rather faint, old Large Magellanic Cloud (LMC) supernova remnant. The [O iii ] emission forms a distinct shell, the remnant of the outer shock, which encloses the radio and X-ray e…
View article: All-Sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample
All-Sky Faint DA White Dwarf Spectrophotometric Standards for Astrophysical Observatories: The Complete Sample Open
Hot DA white dwarfs have fully radiative pure hydrogen atmospheres that are the least complicated to model. Pulsationally stable, they are fully characterized by their effective temperature Teff, and surface gravity log g, which can be ded…
View article: Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards
Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards Open
Auxiliary data files for Axelrod et al. 2023 (in prep.). "HST_passbands" - Hubble Space Telescope photometric filter passthroughs. First column is vacuum wavelength in nm, second column is response. "SED" - calibrated spectral flux density…
View article: Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards
Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards Open
Auxiliary data files for Axelrod et al. 2023 (in prep.). "HST_passbands" - Hubble Space Telescope photometric filter passthroughs. First column is vacuum wavelength in nm, second column is response. "SED" - calibrated spectral flux density…
View article: Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards
Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards Open
Auxiliary data files for Axelrod et al. 2023 (in prep.). "HST_passbands" - Hubble Space Telescope photometric filter passthroughs. First column is vacuum wavelength in nm, second column is response. "SED" - calibrated spectral flux density…
View article: Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards
Spectroscopical data for All-Sky Faint DA White Dwarf Spectrophotometric Standards Open
Auxiliary data files for Axelrod et al. 2023 (in prep.). "HST_passbands" - Hubble Space Telescope photometric filter passthroughs. First column is vacuum wavelength in nm, second column is response. "SED" - calibrated spectral flux density…
View article: High-resolution Spectra of Supernova Remnants in M83
High-resolution Spectra of Supernova Remnants in M83 Open
In order to better characterize the rich supernova remnant (SNR) population of M83 (NGC 5236), we have obtained high-resolution (∼85 km s −1 ) spectra of 119 of the SNRs and SNR candidates in M83 with Gemini/GMOS, as well as new spectra of…
View article: High-Resolution Spectra of Supernova Remnants in M83
High-Resolution Spectra of Supernova Remnants in M83 Open
In order to better characterize the rich supernova remnant (SNR) population of M83 (NGC 5236), we have obtained high-resolution (about 85 km/s) spectra of 119 of the SNRs and SNR candidates in M83 with Gemini/GMOS, as well as new spectra o…
View article: Perfecting Our Set of Spectrophotometric Standard DA White Dwarfs
Perfecting Our Set of Spectrophotometric Standard DA White Dwarfs Open
We verified for photometric stability a set of DA white dwarfs with Hubble Space Telescope magnitudes from the near-ultraviolet to the near-infrared and ground-based spectroscopy by using time-spaced observations from the Las Cumbres Obser…
View article: New ASKAP radio supernova remnants and candidates in the Large Magellanic Cloud
New ASKAP radio supernova remnants and candidates in the Large Magellanic Cloud Open
We present a new Australian Square Kilometre Array Pathfinder (ASKAP) sample of 14 radio supernova remnants (SNR) candidates in the Large Magellanic Cloud (LMC). This new sample is a significant increase to the known number of older, large…
View article: New <i>XMM–Newton</i> observations of faint, evolved supernova remnants in the Large Magellanic Cloud
New <i>XMM–Newton</i> observations of faint, evolved supernova remnants in the Large Magellanic Cloud Open
The Large Magellanic Cloud (LMC) hosts a rich population of supernova remnants (SNRs), our knowledge of which is the most complete of any galaxy. However, there remain many candidate SNRs, identified through optical and radio observations …
View article: Mysterious odd radio circle near the large magellanic cloud – an intergalactic supernova remnant?
Mysterious odd radio circle near the large magellanic cloud – an intergalactic supernova remnant? Open
We report the discovery of J0624–6948, a low-surface brightness radio ring, lying between the Galactic Plane and the large magellanic cloud (LMC). It was first detected at 888 MHz with the Australian Square Kilometre Array Pathfinder (ASKA…
View article: SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO/Virgo Event GW190814
SOAR/Goodman Spectroscopic Assessment of Candidate Counterparts of the LIGO/Virgo Event GW190814 Open
On 2019 August 14 at 21:10:39 UTC, the LIGO/Virgo Collaboration (LVC) detected a possible neutron star-black hole merger (NSBH), the first ever identified. An extensive search for an optical counterpart of this event, designated GW190814, …
View article: New XMM-Newton observations of faint, evolved supernova remnants in the Large Magellanic Cloud
New XMM-Newton observations of faint, evolved supernova remnants in the Large Magellanic Cloud Open
The Large Magellanic Cloud (LMC) hosts a rich population of supernova remnants (SNRs), our knowledge of which is the most complete of any galaxy. However, there remain many candidate SNRs, identified through optical and radio observations …
View article: First studies of the diffuse X-ray emission in the Large Magellanic Cloud with eROSITA
First studies of the diffuse X-ray emission in the Large Magellanic Cloud with eROSITA Open
Context. In the first months after its launch in July 2019, the extended Roentgen Survey with an Imaging Telescope Array (eROSITA) on board Spektrum-Roentgen-Gamma performed long-exposure observations in the regions around supernova (SN) 1…
View article: First studies of the diffuse X-ray emission in the Large Magellanic\n Cloud with eROSITA
First studies of the diffuse X-ray emission in the Large Magellanic\n Cloud with eROSITA Open
In the first months after the launch in July 2019, eROSITA onboard Spektr-RG\n(SRG) performed long-exposure observations in the regions around SN 1987A and\nSNR N132D in the Large Magellanic Cloud (LMC). We analyse the distribution and\nth…
View article: XMM Observation of the Supernova Remnant J0454-6713 and the Adjacent N9 Superbubble
XMM Observation of the Supernova Remnant J0454-6713 and the Adjacent N9 Superbubble Open
The Large Magellanic Cloud supernova remnant J0454-6713 abutting the H ii region N9 has been observed with XMM-Newton. Two groups of lines from Fe xvii account for half the emission and lines from Fe xviii , O vii , and O viii are also cle…
View article: Erratum: Discovery of a mid-infrared protostellar outburst of exceptional amplitude
Erratum: Discovery of a mid-infrared protostellar outburst of exceptional amplitude Open
View article: New optically identified supernova remnants in the Large Magellanic Cloud
New optically identified supernova remnants in the Large Magellanic Cloud Open
We present a new optical sample of three Supernova Remnants (SNRs) and 16 Supernova Remnant (SNR) candidates in the Large Magellanic Cloud (LMC). These objects were originally selected using deep H α, [S ii], and [O iii] narrow-band imagin…