Search Results - "Robertson, J. Gordon"

Probing the early Milky Way with GHOST spectra of an extremely metal-poor star in the Galactic disc by Dovgal, Anya, Venn, Kim A, Sestito, Federico, Hayes, Christian R, McConnachie, Alan W, Navarro, Julio F, Placco, Vinicius M, Starkenburg, Else, Martin, Nicolas F, Pazder, John S, Chiboucas, Kristin, Deibert, Emily, Gamen, Roberto, Heo, Jeong-Eun, Kalari, Venu M, Martioli, Eder, Xu, Siyi, Diaz, Ruben, Gomez-Jimenez, Manuel, Henderson, David, Prado, Pablo, Quiroz, Carlos, Robertson, J Gordon, Ruiz-Carmona, Roque, Simpson, Chris, Urrutia, Cristian, Waller, Fletcher, Berg, Trystyn, Burley, Gregory, Hartman, Zachary, Ireland, Michael, Margheim, Steve, Perez, Gabriel, Thomas-Osip, Joanna

“…ABSTRACT Pristine_183.6849 + 04.8619 (P1836849) is an extremely metal-poor ([Fe/H] = −3.3 ± 0.1) star on a prograde orbit confined to the Galactic disc. Such…”
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SPLUS J142445.34–254247.1: An r-process–enhanced, Actinide-boost, Extremely Metal-poor Star Observed with GHOST by Placco, Vinicius M., Almeida-Fernandes, Felipe, Holmbeck, Erika M., Roederer, Ian U., Mardini, Mohammad K., Hayes, Christian R., Venn, Kim, Chiboucas, Kristin, Deibert, Emily, Gamen, Roberto, Heo, Jeong-Eun, Jeong, Miji, Kalari, Venu, Martioli, Eder, Xu, Siyi, Diaz, Ruben, Gomez-Jimenez, Manuel, Henderson, David, Prado, Pablo, Quiroz, Carlos, Ruiz-Carmona, Roque, Simpson, Chris, Urrutia, Cristian, McConnachie, Alan W., Pazder, John, Burley, Gregory, Ireland, Michael, Waller, Fletcher, Berg, Trystyn A. M., Robertson, J. Gordon, Hartman, Zachary, Jones, David O., Labrie, Kathleen, Perez, Gabriel, Ridgway, Susan, Thomas-Osip, Joanna

“…Abstract We report on a chemo-dynamical analysis of SPLUS J142445.34−254247.1 (SPLUS J1424−2542), an extremely metal-poor halo star enhanced in elements formed…”
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High-resolution Dayside Spectroscopy of WASP-189 b: Detection of Iron during the GHOST/Gemini South System Verification Run by Deibert, Emily K., Langeveld, Adam B., Young, Mitchell E., Flagg, Laura, Turner, Jake D., Smith, Peter C. B., de Mooij, Ernst J. W., Jayawardhana, Ray, Chiboucas, Kristin, Gamen, Roberto, Hayes, Christian R., Heo, Jeong-Eun, Jeong, Miji, Kalari, Venu, Martioli, Eder, Placco, Vinicius M., Xu, Siyi, Diaz, Ruben, Gomez-Jimenez, Manuel, Quiroz, Carlos, Ruiz-Carmona, Roque, Simpson, Chris, McConnachie, Alan W., Pazder, John, Burley, Gregory, Ireland, Michael, Waller, Fletcher, Berg, Trystyn A. M., Robertson, J. Gordon, Jones, David O., Labrie, Kathleen, Ridgway, Susan, Thomas-Osip, Joanna

“…Abstract With high equilibrium temperatures and tidally locked rotation, ultra-hot Jupiters (UHJs) are unique laboratories within which to probe extreme…”
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Beating the classical limit: a diffraction-limited spectrograph for an arbitrary input beam by Betters, Christopher H, Leon-Saval, Sergio G, Robertson, J Gordon, Bland-Hawthorn, Joss

“…We demonstrate a new approach to classical fiber-fed spectroscopy. Our method is to use a photonic lantern that converts an arbitrary (e.g. incoherent) input…”
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Spectroscopic flat-fields can be used for precision CCD gain and noise tests by Robertson, J. Gordon

“…PASA Vol 38, e006 (2021) One of the basic parameters of a CCD camera is its gain, i.e. the number of detected electrons per output Analogue to Digital Unit…”
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Heimdallr, Baldr and Solarstein: designing the next generation of VLTI instruments in the Asgard suite by Taras, Adam K, Robertson, J. Gordon, Allouche, Fatme, Courtney-Barrer, Benjamin, Carter, Josh, Crous, Fred, Cvetojevic, Nick, Ireland, Michael, Lagarde, Stephane, Martinache, Frantz, McGinness, Grace, N'Diaye, Mamadou, Robbe-Dubois, Sylvie, Tuthill, Peter

“…Appl. Opt. 63, D41-D49 (2024) High angular resolution imaging is an increasingly important capability in contemporary astrophysics. Of particular relevance to…”
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Detector sampling of optical/IR spectra: how many pixels per FWHM? by Robertson, J. Gordon

“…PASA 34 (2017) e035 Most optical and IR spectra are now acquired using detectors with finite-width pixels in a square array. This paper examines the effects of…”
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Probing the early Milky Way with GHOST spectra of an extremely metal-poor star in the Galactic disk by Dovgal, Anya, Venn, Kim A, Sestito, Federico, Hayes, Christian R, McConnachie, Alan W, Navarro, Julio F, Placco, Vinicius M, Starkenburg, Else, Martin, Nicolas F, Pazder, John S, Chiboucas, Kristin, Deibert, Emily, Gamen, Roberto, Heo, Jeong-Eun, Kalari, Venu M, Martioli, Eder, Xu, Siyi, Diaz, Ruben, Gomez-Jiminez, Manuel, Henderson, David, Prado, Pablo, Quiroz, Carlos, Robertson, J. Gordon, Ruiz-Carmona, Roque, Simpson, Chris, Urrutia, Cristian, Waller, Fletcher, Berg, Trsytyn, Burley, Gregory, Hartman, Zachary, Ireland, Michael, Margheim, Steve, Perez, Gabriel, Thomas-Osip, Joanna

“…MNRAS 527 (2024) 7810-7824 Pristine_183.6849+04.8619 (P1836849) is an extremely metal-poor ([Fe/H]$=-3.3\pm0.1$) star on a prograde orbit confined to the…”
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Quantifying resolving power in astronomical spectra by Robertson, J. Gordon

“…PASA 30, e048, 2013 The spectral resolving power R = lambda / delta lambda is a key property of any spectrograph, but its definition is vague because the…”
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GHOST commissioning science results III: Characterizing an iron-poor damped Lyman α system by Berg, Trystyn A M, Hayes, Christian R, Cristiani, Stefano, McConnachie, Alan, Sestito, Federico, Simpson, Chris, Waller, Fletcher, Chin, Timothy, Densmore, Adam, Diaz, Ruben J, Edgar, Michael L, Lettura, Javier Fuentes, Gómez-Jiménez, Manuel, Kalari, Venu M, Lawrence, Jon, Margheim, Steven, Pazder, John, Ruiz-Carmona, Roque, Salinas, Ricardo, Silva, Karleyne M G, Silversides, Katherine, Venn, Kim A

“…Abstract The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We…”
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Compact high-resolution spectrographs for large and extremely large telescopes: using the diffraction limit by Robertson, J. Gordon, Bland-Hawthorn, Joss

“…As telescopes get larger, the size of a seeing-limited spectrograph for a given resolving power becomes larger also, and for ELTs the size will be so great…”
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Beating the classical limit: A diffraction-limited spectrograph for an arbitrary input beam by Betters, Christopher H, Leon-Saval, Sergio G, Robertson, J. Gordon, Bland-Hawthorn, Joss

“…Optics Express, Vol. 21, Issue 22, pp. 26103-26112 (2013) We demonstrate a new approach to classical fiber-fed spectroscopy. Our method is to use a photonic…”
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Simulating a dual beam combiner at SUSI for narrow-angle astrometry by Kok, Yitping, Maestro, Vicente, Ireland, Michael J, Tuthill, Peter G, Robertson, J Gordon

“…The Sydney University Stellar Interferometer (SUSI) has two beam combiners, i.e. the Precision Astronomical Visible Observations (PAVO) and the Microarcsecond…”
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A low cost scheme for high precision dual-wavelength laser metrology by Kok, Yitping, Ireland, Michael J, Robertson, J. Gordon, Tuthill, Peter G, Warrington, Benjamin A, Tango, William J

“…A novel method capable of delivering relative optical path length metrology with nanometer precision is demonstrated. Unlike conventional dual-wavelength…”
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Science and Technology Progress at the Sydney University Stellar Interferometer by Robertson, J. Gordon, Ireland, Michael J, Tango, William J, Tuthill, Peter G, Warrington, Benjamin A, Kok, Yitping, Rizzuto, Aaron C, Cheetham, Anthony, Jacob, Andrew P

“…Proc. SPIE 8445-21, 2012 This paper presents an overview of recent progress at the Sydney University Stellar Interferometer (SUSI). Development of the…”
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Simulating a dual beam combiner at SUSI for narrow-angle astrometry by Kok, Yitping, Maestro, Vicente, Ireland, Michael J., Tuthill, Peter G., Robertson, J. Gordon

“…The Sydney University Stellar Interferometer (SUSI) has two beam combiners, i.e. the Precision Astronomical Visible Observations (PAVO) and the Microarcsecond…”
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Heimdallr and Solarstein: alignment, calibration, and correction in the Asgard suite at the VLTI by Taras, Adam K, Robertson, J. Gordon, Carter, Josh, Crous, Fred, Courtney-Barrer, Benjamin, McGinness, Grace, Ireland, Michael, Tuthill, Peter

“…The Asgard instrument suite proposed for the ESO's Very Large Telescope Interferometer (VLTI) brings with it a new generation of instruments for spectroscopy…”
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GHOST Commissioning Science Results III: Characterizing an iron-poor damped Lyman $\alpha$ system by Berg, Trystyn A. M, Hayes, Christian R, Cristiani, Stefano, McConnachie, Alan, Robertson, J. Gordon, Sestito, Federico, Simpson, Chris, Waller, Fletcher, Chin, Timothy, Densmore, Adam, Diaz, Ruben J, Edgar, Michael L, Lettura, Javier Fuentes, Gómez-Jiménez, Manuel, Kalari, Venu M, Lawrence, Jon, Margheim, Steven, Pazder, John, Ruiz-Carmona, Roque, Salinas, Ricardo, Silva, Karleyne M. G, Silversides, Katherine, Venn, Kim A

“…The Gemini High-resolution Optical SpecTrograph (GHOST) is a new echelle spectrograph available on the Gemini-South telescope as of Semester 2024A. We present…”
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Seeking celestial Positronium with an OH-suppressed diffraction-limited spectrograph by Robertson, J. Gordon, Ellis, Simon, Yu, Qingshan, Bland-Hawthorn, Joss, Betters, Christopher, Roth, Martin, Leon-Saval, Sergio

“…Applied Optics Vol 60, No. 19, D122-D128, 2021 Celestially, Positronium (Ps), has only been observed through gamma-ray emission produced by its annihilation…”
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High-Resolution Dayside Spectroscopy of WASP-189b: Detection of Iron during the GHOST/Gemini South System Verification Run by Deibert, Emily K, Langeveld, Adam B, Young, Mitchell E, Flagg, Laura, Turner, Jake D, Smith, Peter C. B, de Mooij, Ernst J. W, Jayawardhana, Ray, Chiboucas, Kristin, Gamen, Roberto, Hayes, Christian R, Heo, Jeong-Eun, Jeong, Miji, Kalari, Venu, Martioli, Eder, Placco, Vinicius M, Xu, Siyi, Diaz, Ruben, Gomez-Jimenez, Manuel, Quiroz, Carlos, Ruiz-Carmona, Roque, Simpson, Chris, McConnachie, Alan W, Pazder, John, Burley, Gregory, Ireland, Michael, Waller, Fletcher, Berg, Trystyn A. M, Robertson, J. Gordon, Jones, David O, Labrie, Kathleen, Ridgway, Susan, Thomas-Osip, Joanna

“…With high equilibrium temperatures and tidally locked rotation, ultra-hot Jupiters (UHJs) are unique laboratories within which to probe extreme atmospheric…”
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