Ten years of speckle interferometry at SOAR

Abstract

Since 2007, close binary and multiple stars are observed by speckle interferometry at the 4.1 m Southern Astrophysical Research (SOAR) telescope. The HRCam instrument, observing strategy and planning, data processing and calibration methods, developed and improved during ten years, are presented here in a concise way. Thousands of binary stars were measured with diffraction-limited resolution (29mas at 540nm wavelength) and a high accuracy reaching 1mas; two hundred new pairs or subsystems were discovered. To date, HRCam has performed over 11000 observations with a high efficiency (up to 300 stars per night). An overview of the main results delivered by this instrument is given.

Accepted by PASP. 12 pages, 11 figures

References in corpus (10)

• A survey of the high order multiplicity of nearby solar-type binary stars with Robo-AO
• High-efficiency Autonomous Laser Adaptive Optics
• SOAR Adaptive Module (SAM): seeing improvement with a UV laser
• AstraLux: the Calar Alto Lucky Imaging Camera
• Orbits for eighteen visual binaries and two double-line spectroscopic binaries observed with HRCAM on the CTIO SOAR 4m telescope, using a new Bayesian orbit code based on Markov Chain Monte Carlo
• New orbits based on speckle interferometry at SOAR. II
• The unusual quadruple system HD 91962 with a "planetary" architecture
• The triple system Zeta Aquarii
• Imaging survey of subsystems in secondary components to nearby southern dwarfs
• New binaries in the epsilon Cha association

Cited by in corpus (132)

• SOAR TESS Survey. I: Sculpting of TESS planetary systems by stellar companions
• TESS Spots a Compact System of Super-Earths around the Naked-Eye Star HR 858
• A remnant planetary core in the hot-Neptune desert
• The First Habitable Zone Earth-sized Planet from TESS. I: Validation of the TOI-700 System
• A pair of TESS planets spanning the radius valley around the nearby mid-M dwarf LTT 3780
• The CARMENES search for exoplanets around M dwarfs. Two planets on the opposite sides of the radius gap transiting the nearby M dwarf LTT 3780
• HD 213885b: A transiting 1-day-period super-Earth with an Earth-like composition around a bright ($V=7.9$) star unveiled by TESS
• An Eccentric Massive Jupiter Orbiting a Sub-Giant on a 9.5 Day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images
• Two young planetary systems around field stars with ages between 20-320 Myr from TESS
• Cluster Difference Imaging Photometric Survey. II. TOI 837: A Young Validated Planet in IC 2602
• Planet Hunters TESS I: TOI 813, a subgiant hosting a transiting Saturn-sized planet on an 84-day orbit
• SOAR TESS Survey. II: The impact of stellar companions on planetary populations
• TOI-677 b: A Warm Jupiter (P=11.2d) on an eccentric orbit transiting a late F-type star
• Two intermediate-mass transiting brown dwarfs from the TESS mission
• A hot terrestrial planet orbiting the bright M dwarf L 168-9 unveiled by TESS
• TIC 168789840: A Sextuply-Eclipsing Sextuple Star System
• HD2685 b: A Hot-Jupiter orbiting an early F-type star detected by TESS
• A planetary system with two transiting mini-Neptunes near the radius valley transition around the bright M dwarf TOI-776
• TOI-257b (HD 19916b): A Warm sub-Saturn Orbiting an Evolved F-type Star
• Planet Hunters TESS II: Findings from the first two years of TESS
• Populating the brown dwarf and stellar boundary: Five stars with transiting companions near the hydrogen-burning mass limit
• TOI-222: a single-transit TESS candidate revealed to be a 34-day eclipsing binary with CORALIE, EulerCam and NGTS
• Speckle interferometry at SOAR in 2018
• A transiting warm giant planet around the young active star TOI-201
• TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet
• Speckle interferometry at SOAR in 2016 and 2017
• TOI-811b and TOI-852b: New transiting brown dwarfs with similar masses and very different radii and ages from the TESS mission
• TOI-481 b & TOI-892 b: Two long period hot Jupiters from the Transiting Exoplanet Survey Satellite
• Speckle interferometry at SOAR in 2019
• Near-resonance in a system of sub-Neptunes from TESS
• TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full Frame Images
• KELT-25b and KELT-26b: A Hot Jupiter and a Substellar Companion Transiting Young A-stars Observed by TESS
• TOI-269 b: An eccentric sub-Neptune transiting a M2 dwarf revisited with ExTrA
• The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets
• A super-massive Neptune-sized planet
• TESS Hunt for Young and Maturing Exoplanets (THYME) IX: a 27 Myr extended population of Lower-Centaurus Crux with a transiting two-planet system
• Speckle Interferometry at SOAR in 2021
• The Discovery of a Planetary Companion Interior to Hot Jupiter WASP-132 b
• TESS Reveals a Short-period Sub-Neptune Sibling (HD 86226c) to a Known Long-period Giant Planet
• LHS 1815b: The First Thick-Disk Planet Detected By TESS
• TOI-5005 b: A super-Neptune in the savanna near the ridge
• Three Short Period Jupiters from TESS
• The Solar Neighborhood XLIX: New Discoveries and Orbits of M Dwarf Multiples with Speckle Interferometry at SOAR
• The HD 98800 quadruple pre-main sequence system. Towards full orbital characterisation using long-baseline infrared interferometry
• The compact multiple system HIP 41431
• Binary stars in Upper Scorpius
• Speckle Interferometry at SOAR in 2020
• TESS spots a mini-neptune interior to a hot saturn in the TOI-2000 system
• A low-eccentricity migration pathway for a 13-h-period Earth analogue in a four-planet system
• Another Shipment of Six Short-Period Giant Planets from TESS
• Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars
• Speckle observations and orbits of multiple stars
• TOI 540 b: A Planet Smaller than Earth Orbiting a Nearby Rapidly Rotating Low-mass Star
• The Solar Neighborhood. XLVI. Revealing New M Dwarf Binaries and their Orbital Architectures
• The TESS Grand Unified Hot Jupiter Survey. I. Ten TESS Planets
• Orbital elements and individual component masses from joint spectroscopic and astrometric data of double-line spectroscopic binaries
• Three long period transiting giant planets from TESS
• HD 28109 hosts a trio of transiting Neptunian planets including a near-resonant pair, confirmed by ASTEP from Antarctica
• Two Warm Neptunes transiting HIP 9618 revealed by TESS & Cheops
• TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star
• TOI 694 b and TIC 220568520 b: Two Low-Mass Companions Near the Hydrogen Burning Mass Limit Orbiting Sun-like Stars
• Characterization of a set of small planets with TESS and CHEOPS and an analysis of photometric performance
• HIP 33609 b: An Eccentric Brown Dwarf Transiting a V=7.3 Rapidly Rotating B-Star
• The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one
• TOI 564 b and TOI 905 b: Grazing and Fully Transiting Hot Jupiters Discovered by TESS
• HD 20329b: An ultra-short-period planet around a solar-type star found by TESS
• GJ 3090 b: one of the most favourable mini-Neptune for atmospheric characterisation
• TOI 122b and TOI 237b, two small warm planets orbiting inactive M dwarfs, found by \textit{TESS}
• A hot mini-Neptune in the radius valley orbiting solar analogue HD 110113
• The LHS 1678 System: Two Earth-Sized Transiting Planets and an Astrometric Companion Orbiting an M Dwarf Near the Convective Boundary at 20 pc
• Three super-Earths and a possible water world from TESS and ESPRESSO
• Two Massive Jupiters in Eccentric Orbits from the TESS Full Frame Images
• Three low-mass companions around aged stars discovered by TESS
• TOI-4562 b: A highly eccentric temperate Jupiter analog orbiting a young field star
• TOI-954 b and K2-329 b: Short-Period Saturn-Mass Planets that Test whether Irradiation Leads to Inflation
• Three Warm Jupiters around Solar-analog stars detected with TESS
• Yes, multi-periodic dwarfs in Upper Scorpius are binaries
• TESS and CHEOPS Discover Two Warm Sub-Neptunes Transiting the Bright K-dwarf HD 15906
• TIC 278956474: Two close binaries in one young quadruple system, identified by \textit{TESS}
• Speckle Interferometry of Nearby Multiple Stars: 2007-2019 Positional Measurements and Orbits of Eight Objects
• The protoplanetary disc around HD 169142: circumstellar or circumbinary?
• Chasing extreme planetary architectures: I- HD196885Ab, a super-Jupiter dancing with two stars?
• Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS
• A possible advantage of telescopes with a non-circular pupil
• Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS
• TOI-4504: Exceptionally large Transit Timing Variations induced by two resonant warm gas giants in a three planet system
• Three Warm Jupiters orbiting TOI-6628, TOI-3837, TOI-5027 and one sub-Saturn orbiting TOI-2328
• A study of the F-giant star $\theta$ Scorpii A: a post-merger rapid rotator?
• TOI-712: a system of adolescent mini-Neptunes extending to the habitable zone
• Exploring Thousands of Nearby Hierarchical Systems with Gaia and Speckle Interferometry
• TOI-4336 A b: A temperate sub-Neptune ripe for atmospheric characterization in a nearby triple M-dwarf system
• HD 183579b: A Warm Sub-Neptune Transiting a Solar Twin Detected by TESS
• TOI-5108 b and TOI 5786 b: Two transiting sub-Saturns detected and characterized with TESS, MaHPS and SOPHIE
• TOI-908: a planet at the edge of the Neptune desert transiting a G-type star
• Visual binary stars with partially missing data: Introducing multiple imputation in astrometric analysis
• Discovery of a cold giant planet and mass measurement of a hot super-Earth in the multi-planetary system WASP-132
• The inflated, eccentric warm Jupiter TOI-4914 b orbiting a metal-poor star, and the hot Jupiters TOI-2714 b and TOI-2981 b
• The Hot-Neptune Initiative (HONEI) I. Two hot sub-Neptunes on a close-in, eccentric orbit (TOI-5800 b) and a farther-out, circular orbit (TOI-5817 b)
• TOI-858 B b: A hot Jupiter on a polar orbit in a loose binary
• The family of V1311 Ori: a young sextuple system or a mini-cluster?
• Discovery and characterization of a dense sub-Saturn TOI-6651b
• NIRPS and TESS reveal a peculiar system around the M dwarf TOI-756: A transiting sub-Neptune and a cold eccentric giant
• TOI-2498 b: A hot bloated super-Neptune within the Neptune desert
• TOI-2005b: An Eccentric Warm Jupiter in Spin-Orbit Alignment
• TESS discovery of a super-Earth and two sub-Neptunes orbiting the bright, nearby, Sun-like star HD 22946
• Observations of red giants with suspected massive companions
• The quadruple system HIP 45734
• TOI-3288 b and TOI-4666 b: two gas giants transiting low-mass stars characterised by NIRPS
• A Transiting Super-Earth in the Radius Valley and An Outer Planet Candidate Around HD 307842
• Migration and Evolution of giant ExoPlanets (MEEP) II: Super-Jupiters and Lithium-rich Host Stars
• Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI: Confirmation of a Long-Period Giant Planet Discovered with a Single TESS Transit
• Confirmation of four hot Jupiters detected by TESS using follow-up spectroscopy from MaHPS at Wendelstein together with NEID and TRES
• TESS Discovery of Twin Planets near 2:1 Resonance around Early M-Dwarf TOI 4342
• TOI-1743 b, TOI-5799 b, TOI-5799 c and TOI-6223 b: TESS discovery and validation of four super-Earth to Neptune-sized planets around M dwarfs
• TOI-2458 b: A mini-Neptune consistent with in situ hot Jupiter formation
• TOI-2322: two transiting rocky planets close to the stellar rotation period and its first harmonic
• The Solar Neighborhood LII: M Dwarf Twin Binaries -- Presumed Identical Twins Appear Fraternal in Variability, Rotation, H$\alpha$, and X-rays
• Detection and characterisation of a 106-day transiting Jupiter : TOI-2449 b / NGTS-36 b
• BD-14 3065b (TOI-4987b): from giant planet to brown dwarf: evidence for deuterium burning in old age?
• Separated twins or just siblings? A multi-planet system around an M dwarf including a cool sub-Neptune
• ASTEP confirmation of a pair of long-period Jupiter-sized planets with extremely low densities transiting TOI-791
• The Solar Neighborhood. LV. M Dwarf Twin Binaries -- One in Five Twin Sibling Pairs Are Mismatched in Activity and/or Rotation
• The GAPS programme at TNG LXXI. A sub-Neptune suitable for atmospheric characterization in a multiplanet and mutually inclined system orbiting the bright K dwarf TOI-5789 (HIP 99452)
• GJ 238 b: A 0.57 Earth Radius Planet Orbiting an M2.5 Dwarf Star at 15.2 pc
• Precision speckle interferometry with CMOS detector
• Three Hot Jupiters transiting K-dwarfs with a significant heavy element mass
• Scaling K2. V. Statistical Validation of 60 New Exoplanets From K2 Campaigns 2-18
• TFAW survey II: 6 Newly Validated Planets and 13 Planet Candidates from K2
• A transiting hot Jupiter with two outer siblings orbiting an intermediate-mass post main-sequence star
• TOI-7154b: A Close-in Massive Brown Dwarf in an Eccentric Orbit
• A Warm Massive Pair of Planets around TOI-1232 Revealed with Transit-timing Variations and Doppler Spectroscopy
• TOI-333b: A Neptune Desert planet around a F7V star