Ivan A Curtis - Profile on Academia.edu (original) (raw)
Papers by Ivan A Curtis
Comet Observations [D79 YSVP Observatory, Vale Park]
Mathematics of Program Construction, Mar 1, 2011
VizieR Online Data Catalog: Photometry of Proxima Centauri from 2006 to 2017 (Feliz+, 2019)
Astronomy & Astrophysics, 2017
Astronomy & Astrophysics, 2016
Tag reading apparatus and a method of reading a tag
Large Number ID Tagging System
The Astronomical Journal, 2014
The supernova (SN) impostor SN 2009ip has re-brightened several times since its initial discovery... more The supernova (SN) impostor SN 2009ip has re-brightened several times since its initial discovery in 2009 August. During its last outburst in late 2012 September, it reached a peak brightness of m v ∼13.5 (M v brighter than −18), causing some to speculate that it had undergone a terminal core-collapse SN. Relatively high-cadence multi-wavelength photometry of the post-peak decline revealed bumps in brightness infrequently observed in other SNe IIn. These bumps occurred synchronously in all ultraviolet (UV) and optical bands with amplitudes of 0.1–0.4 mag at intervals of 10–30 days. Episodic continuum brightening and dimming in the UV and optical with these characteristics is not easily explained within the context of models that have been proposed for the late September 2012 outburst of SN 2009ip. We also present evidence that the post-peak fluctuations in brightness occur at regular intervals and raise more questions about their origin.
The Astrophysical Journal, 2013
Monthly Notices of the Royal Astronomical Society, 2017
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
The Astrophysical Journal Supplement Series
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will ac... more The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ephemerides. This work presents a homogenous catalog of updated ephemerides for 450 planets, generated by the integration of ∼18,000 data points from multiple sources. These sources include observations from ground-based telescopes (the ExoClock network and the Exoplanet Transit Database), midtime values from the literature, and light curves from space telescopes (Kepler, K2, and TESS). With all the above, we manage to collect observations for half of the postdiscovery years (median), with data that have a median uncertainty less than 1 minute. In comparison with the literature, the ephemerides generated by the project are more precise and less biased. More than 40% of the initial literature ephemerides had to be updated to reach the goa...
Searching for White Dwarf Exoplanets: WD 2359-434 Case Study
Society for Astronomical Sciences Annual Symposium, May 1, 2013
VizieR Online Data Catalog: Follow-up photometry and spectroscopy of KELT-17 (Zhou+, 2016)
yCat, May 1, 2017
VizieR Online Data Catalog: RI light curve of KELT-25 and KELT-26 (Martinez+, 2020)
VizieR Online Data Catalog, Oct 1, 2020
Minor Planet Observations [D79 YSVP Observatory, Vale Park]
Minor Planet Circulars, 2011
VizieR Online Data Catalog: Photometry of beta Pic members (Messina+, 2017)
yCat, Sep 1, 2016
VizieR Online Data Catalog: Radial velocities & light curves of KELT-24 (Rodriguez+, 2019)
VizieR Online Data Catalog: Photometry and spectroscopy of KELT-11 (Pepper+, 2017)
VizieR Online Data Catalog: Discovery of 2 hot Jupiters KELT-14b & KELT-15b (Rodriguez+, 2016)
VizieR Online Data Catalog: KELT transit false positive catalog for TESS (Collins+, 2018)
The Astronomical Journal, 2020
We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, ... more We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A stars. The transit signals were initially detected by the KELT survey and subsequently confirmed by Transiting Exoplanet Survey Satellite (TESS) photometry. KELT-25 b is on a 4.40 day orbit around the V = 9.66 star CD-24 5016 ( K, M ⋆ = M ⊙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 ( = K, M ⋆ = M ⊙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = R J and a 3σ upper limit on the companion’s mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = and R P = R J. From Doppler tomographic observations, we...
Comet Observations [D79 YSVP Observatory, Vale Park]
Mathematics of Program Construction, Mar 1, 2011
VizieR Online Data Catalog: Photometry of Proxima Centauri from 2006 to 2017 (Feliz+, 2019)
Astronomy & Astrophysics, 2017
Astronomy & Astrophysics, 2016
Tag reading apparatus and a method of reading a tag
Large Number ID Tagging System
The Astronomical Journal, 2014
The supernova (SN) impostor SN 2009ip has re-brightened several times since its initial discovery... more The supernova (SN) impostor SN 2009ip has re-brightened several times since its initial discovery in 2009 August. During its last outburst in late 2012 September, it reached a peak brightness of m v ∼13.5 (M v brighter than −18), causing some to speculate that it had undergone a terminal core-collapse SN. Relatively high-cadence multi-wavelength photometry of the post-peak decline revealed bumps in brightness infrequently observed in other SNe IIn. These bumps occurred synchronously in all ultraviolet (UV) and optical bands with amplitudes of 0.1–0.4 mag at intervals of 10–30 days. Episodic continuum brightening and dimming in the UV and optical with these characteristics is not easily explained within the context of models that have been proposed for the late September 2012 outburst of SN 2009ip. We also present evidence that the post-peak fluctuations in brightness occur at regular intervals and raise more questions about their origin.
The Astrophysical Journal, 2013
Monthly Notices of the Royal Astronomical Society, 2017
ExoClock Project. III. 450 New Exoplanet Ephemerides from Ground and Space Observations
The Astrophysical Journal Supplement Series
The ExoClock project has been created to increase the efficiency of the Ariel mission. It will ac... more The ExoClock project has been created to increase the efficiency of the Ariel mission. It will achieve this by continuously monitoring and updating the ephemerides of Ariel candidates, in order to produce a consistent catalog of reliable and precise ephemerides. This work presents a homogenous catalog of updated ephemerides for 450 planets, generated by the integration of ∼18,000 data points from multiple sources. These sources include observations from ground-based telescopes (the ExoClock network and the Exoplanet Transit Database), midtime values from the literature, and light curves from space telescopes (Kepler, K2, and TESS). With all the above, we manage to collect observations for half of the postdiscovery years (median), with data that have a median uncertainty less than 1 minute. In comparison with the literature, the ephemerides generated by the project are more precise and less biased. More than 40% of the initial literature ephemerides had to be updated to reach the goa...
Searching for White Dwarf Exoplanets: WD 2359-434 Case Study
Society for Astronomical Sciences Annual Symposium, May 1, 2013
VizieR Online Data Catalog: Follow-up photometry and spectroscopy of KELT-17 (Zhou+, 2016)
yCat, May 1, 2017
VizieR Online Data Catalog: RI light curve of KELT-25 and KELT-26 (Martinez+, 2020)
VizieR Online Data Catalog, Oct 1, 2020
Minor Planet Observations [D79 YSVP Observatory, Vale Park]
Minor Planet Circulars, 2011
VizieR Online Data Catalog: Photometry of beta Pic members (Messina+, 2017)
yCat, Sep 1, 2016
VizieR Online Data Catalog: Radial velocities & light curves of KELT-24 (Rodriguez+, 2019)
VizieR Online Data Catalog: Photometry and spectroscopy of KELT-11 (Pepper+, 2017)
VizieR Online Data Catalog: Discovery of 2 hot Jupiters KELT-14b & KELT-15b (Rodriguez+, 2016)
VizieR Online Data Catalog: KELT transit false positive catalog for TESS (Collins+, 2018)
The Astronomical Journal, 2020
We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, ... more We present the discoveries of KELT-25 b (TIC 65412605, TOI-626.01) and KELT-26 b (TIC 160708862, TOI-1337.01), two transiting companions orbiting relatively bright, early A stars. The transit signals were initially detected by the KELT survey and subsequently confirmed by Transiting Exoplanet Survey Satellite (TESS) photometry. KELT-25 b is on a 4.40 day orbit around the V = 9.66 star CD-24 5016 ( K, M ⋆ = M ⊙), while KELT-26 b is on a 3.34 day orbit around the V = 9.95 star HD 134004 ( = K, M ⋆ = M ⊙), which is likely an Am star. We have confirmed the substellar nature of both companions through detailed characterization of each system using ground-based and TESS photometry, radial velocity measurements, Doppler tomography, and high-resolution imaging. For KELT-25, we determine a companion radius of R P = R J and a 3σ upper limit on the companion’s mass of ∼64 M J. For KELT-26 b, we infer a planetary mass and radius of M P = and R P = R J. From Doppler tomographic observations, we...