SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy
We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP 109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled with the Microwave Kinetic Inductance Detector Exoplanet Camera (MEC) and CHARIS integral field spectrograph...
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| Veröffentlicht in: | The Astronomical journal 2021-08, Vol.162 (2), p.44 |
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| creator | Steiger, Sarah Currie, Thayne Brandt, Timothy D. Guyon, Olivier Kuzuhara, Masayuki Chilcote, Jeffrey Groff, Tyler D. Lozi, Julien Walter, Alexander B. Fruitwala, Neelay Bailey, III, John I. Zobrist, Nicholas Swimmer, Noah Lipartito, Isabel Smith, Jennifer Pearl Bockstiegel, Clint Meeker, Seth R. Coiffard, Gregoire Dodkins, Rupert Szypryt, Paul Davis, Kristina K. Daal, Miguel Bumble, Bruce Vievard, Sebastien Sahoo, Ananya Deo, Vincent Jovanovic, Nemanja Martinache, Frantz Doppmann, Greg Tamura, Motohide Kasdin, N. Jeremy Mazin, Benjamin A. |
| description | We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP 109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled with the Microwave Kinetic Inductance Detector Exoplanet Camera (MEC) and CHARIS integral field spectrograph. CHARIS data reduced with reference star point spread function (PSF) subtraction yield 1.1–2.4
μ
m spectra. MEC reveals the companion in
Y
and
J
band at a comparable signal-to-noise ratio using stochastic speckle discrimination, with no PSF subtraction techniques. Combined with complementary follow-up
L
p
photometry from Keck/NIRC2, the SCExAO data favors a spectral type, effective temperature, and luminosity of M4–M5.5, 3000–3200 K, and
log
10
(
L
/
L
⊙
)
=
−
2.28
−
0.04
+
0.04
, respectively. Relative astrometry of HIP 109427 B from SCExAO/CHARIS and Keck/NIRC2, and complementary Gaia–Hipparcos absolute astrometry of the primary favor a semimajor axis of 6.55
+3.0
−0.48
au, an eccentricity of
0.54
−
0.15
+
0.28
, an inclination of
66.7
−
14
+
8.5
degrees, and a dynamical mass of
0.280
−
0.059
+
0.18
M
⊙
. This work shows the potential for extreme AO systems to utilize speckle statistics in addition to widely used postprocessing methods to directly image faint companions to nearby stars near the telescope diffraction limit. |
| doi_str_mv | 10.3847/1538-3881/ac02cc |
| format | Article |
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μ
m spectra. MEC reveals the companion in
Y
and
J
band at a comparable signal-to-noise ratio using stochastic speckle discrimination, with no PSF subtraction techniques. Combined with complementary follow-up
L
p
photometry from Keck/NIRC2, the SCExAO data favors a spectral type, effective temperature, and luminosity of M4–M5.5, 3000–3200 K, and
log
10
(
L
/
L
⊙
)
=
−
2.28
−
0.04
+
0.04
, respectively. Relative astrometry of HIP 109427 B from SCExAO/CHARIS and Keck/NIRC2, and complementary Gaia–Hipparcos absolute astrometry of the primary favor a semimajor axis of 6.55
+3.0
−0.48
au, an eccentricity of
0.54
−
0.15
+
0.28
, an inclination of
66.7
−
14
+
8.5
degrees, and a dynamical mass of
0.280
−
0.059
+
0.18
M
⊙
. This work shows the potential for extreme AO systems to utilize speckle statistics in addition to widely used postprocessing methods to directly image faint companions to nearby stars near the telescope diffraction limit.</description><identifier>ISSN: 0004-6256</identifier><identifier>ISSN: 1538-3881</identifier><identifier>EISSN: 1538-3881</identifier><identifier>DOI: 10.3847/1538-3881/ac02cc</identifier><language>eng</language><publisher>Madison: IOP Publishing</publisher><subject>Adaptive control ; Adaptive optics ; Astrometry ; Astronomy ; Astrophysics ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; DIFFRACTION ; Discrimination ; Extrasolar planets ; INDUCTANCE ; INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY ; KINETICS ; LUMINOSITY ; MICROWAVE RADIATION ; OPTICS ; PHOTOMETRY ; Physics ; Point spread functions ; Reference stars ; SIGNAL-TO-NOISE RATIO ; SPECTRA ; SPECTROSCOPY ; Spectrum analysis ; STARS ; STOCHASTIC PROCESSES ; Subtraction ; TELESCOPES</subject><ispartof>The Astronomical journal, 2021-08, Vol.162 (2), p.44</ispartof><rights>Copyright IOP Publishing Aug 2021</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c477t-a1077fa58bc38a00e1a88696a27fe242ac94ceeec2c3298efe72f5ac574aa283</citedby><cites>FETCH-LOGICAL-c477t-a1077fa58bc38a00e1a88696a27fe242ac94ceeec2c3298efe72f5ac574aa283</cites><orcidid>0000-0002-3047-1845 ; 0000-0001-5587-845X ; 0000-0002-7405-3119 ; 0000-0003-4792-6479 ; 0000-0002-4787-3285 ; 0000-0003-3146-7263 ; 0000-0003-1180-4138 ; 0000-0001-5213-6207 ; 0000-0002-4272-263X ; 0000-0003-0526-1114 ; 0000-0003-2806-1254 ; 0000-0001-5721-8973 ; 0000-0002-6510-0681 ; 0000-0002-0849-5867 ; 0000-0003-2630-8073 ; 0000-0003-4514-7906 ; 0000-0003-4018-2569 ; 0000-0002-1097-9908 ; 0000-0002-4677-9182 ; 0000-0001-6305-7272 ; 0000-0001-5978-3247</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,27901,27902</link.rule.ids><backlink>$$Uhttps://hal.science/hal-03518325$$DView record in HAL$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/23159295$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Steiger, Sarah</creatorcontrib><creatorcontrib>Currie, Thayne</creatorcontrib><creatorcontrib>Brandt, Timothy D.</creatorcontrib><creatorcontrib>Guyon, Olivier</creatorcontrib><creatorcontrib>Kuzuhara, Masayuki</creatorcontrib><creatorcontrib>Chilcote, Jeffrey</creatorcontrib><creatorcontrib>Groff, Tyler D.</creatorcontrib><creatorcontrib>Lozi, Julien</creatorcontrib><creatorcontrib>Walter, Alexander B.</creatorcontrib><creatorcontrib>Fruitwala, Neelay</creatorcontrib><creatorcontrib>Bailey, III, John I.</creatorcontrib><creatorcontrib>Zobrist, Nicholas</creatorcontrib><creatorcontrib>Swimmer, Noah</creatorcontrib><creatorcontrib>Lipartito, Isabel</creatorcontrib><creatorcontrib>Smith, Jennifer Pearl</creatorcontrib><creatorcontrib>Bockstiegel, Clint</creatorcontrib><creatorcontrib>Meeker, Seth R.</creatorcontrib><creatorcontrib>Coiffard, Gregoire</creatorcontrib><creatorcontrib>Dodkins, Rupert</creatorcontrib><creatorcontrib>Szypryt, Paul</creatorcontrib><creatorcontrib>Davis, Kristina K.</creatorcontrib><creatorcontrib>Daal, Miguel</creatorcontrib><creatorcontrib>Bumble, Bruce</creatorcontrib><creatorcontrib>Vievard, Sebastien</creatorcontrib><creatorcontrib>Sahoo, Ananya</creatorcontrib><creatorcontrib>Deo, Vincent</creatorcontrib><creatorcontrib>Jovanovic, Nemanja</creatorcontrib><creatorcontrib>Martinache, Frantz</creatorcontrib><creatorcontrib>Doppmann, Greg</creatorcontrib><creatorcontrib>Tamura, Motohide</creatorcontrib><creatorcontrib>Kasdin, N. Jeremy</creatorcontrib><creatorcontrib>Mazin, Benjamin A.</creatorcontrib><title>SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy</title><title>The Astronomical journal</title><description>We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP 109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled with the Microwave Kinetic Inductance Detector Exoplanet Camera (MEC) and CHARIS integral field spectrograph. CHARIS data reduced with reference star point spread function (PSF) subtraction yield 1.1–2.4
μ
m spectra. MEC reveals the companion in
Y
and
J
band at a comparable signal-to-noise ratio using stochastic speckle discrimination, with no PSF subtraction techniques. Combined with complementary follow-up
L
p
photometry from Keck/NIRC2, the SCExAO data favors a spectral type, effective temperature, and luminosity of M4–M5.5, 3000–3200 K, and
log
10
(
L
/
L
⊙
)
=
−
2.28
−
0.04
+
0.04
, respectively. Relative astrometry of HIP 109427 B from SCExAO/CHARIS and Keck/NIRC2, and complementary Gaia–Hipparcos absolute astrometry of the primary favor a semimajor axis of 6.55
+3.0
−0.48
au, an eccentricity of
0.54
−
0.15
+
0.28
, an inclination of
66.7
−
14
+
8.5
degrees, and a dynamical mass of
0.280
−
0.059
+
0.18
M
⊙
. This work shows the potential for extreme AO systems to utilize speckle statistics in addition to widely used postprocessing methods to directly image faint companions to nearby stars near the telescope diffraction limit.</description><subject>Adaptive control</subject><subject>Adaptive optics</subject><subject>Astrometry</subject><subject>Astronomy</subject><subject>Astrophysics</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>DIFFRACTION</subject><subject>Discrimination</subject><subject>Extrasolar planets</subject><subject>INDUCTANCE</subject><subject>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</subject><subject>KINETICS</subject><subject>LUMINOSITY</subject><subject>MICROWAVE RADIATION</subject><subject>OPTICS</subject><subject>PHOTOMETRY</subject><subject>Physics</subject><subject>Point spread functions</subject><subject>Reference stars</subject><subject>SIGNAL-TO-NOISE RATIO</subject><subject>SPECTRA</subject><subject>SPECTROSCOPY</subject><subject>Spectrum analysis</subject><subject>STARS</subject><subject>STOCHASTIC PROCESSES</subject><subject>Subtraction</subject><subject>TELESCOPES</subject><issn>0004-6256</issn><issn>1538-3881</issn><issn>1538-3881</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpFkV9v0zAUxS3EJMrGO4-WeEIi1H9j57EKHalUtGkZz9bFOKtHG4fYHeuH4bviLGh7snX1u-eeo4PQe0o-cy3UkkquC641XYIlzNpXaPE8eo0WhBBRlEyWb9DbGO8JoVQTsUB_23r9uLpaflvXGPqfuG5WN5sWf_HRhgc3nnDoMOBt-FMcIMZPuMRwxK0bYITkQ4_rcBign34p4GZzjSmpBFP4e_T9HW5TsDuIyVvcDs7-2rsn5dEffD_vTzcbf7crbOjTmNEnMI0h3x9OF-isg3107_6_5-j2cn1bN8X26uumXm0LK5RKBVCiVAdS_7BcAyGOgtZlVQJTnWOCga2Edc5ZZjmrtOucYp0EK5UAYJqfow-zbMhWTbQ-ObvLhvrsxDBOZcUqmamPM7WDvRlyBhhPJoA3zWprphnhkmrO5AN9URzG8PvoYjL34Tj2OYNhUuiyJESzTJGZsjlvHF33LEuJmVo1U4VmqtDMrfJ_GJuTnQ</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>Steiger, Sarah</creator><creator>Currie, Thayne</creator><creator>Brandt, Timothy D.</creator><creator>Guyon, Olivier</creator><creator>Kuzuhara, Masayuki</creator><creator>Chilcote, Jeffrey</creator><creator>Groff, Tyler D.</creator><creator>Lozi, Julien</creator><creator>Walter, Alexander B.</creator><creator>Fruitwala, Neelay</creator><creator>Bailey, III, John I.</creator><creator>Zobrist, Nicholas</creator><creator>Swimmer, Noah</creator><creator>Lipartito, Isabel</creator><creator>Smith, Jennifer Pearl</creator><creator>Bockstiegel, Clint</creator><creator>Meeker, Seth R.</creator><creator>Coiffard, Gregoire</creator><creator>Dodkins, Rupert</creator><creator>Szypryt, Paul</creator><creator>Davis, Kristina K.</creator><creator>Daal, Miguel</creator><creator>Bumble, Bruce</creator><creator>Vievard, Sebastien</creator><creator>Sahoo, Ananya</creator><creator>Deo, Vincent</creator><creator>Jovanovic, Nemanja</creator><creator>Martinache, Frantz</creator><creator>Doppmann, Greg</creator><creator>Tamura, Motohide</creator><creator>Kasdin, N. Jeremy</creator><creator>Mazin, Benjamin A.</creator><general>IOP Publishing</general><general>American Astronomical Society</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><scope>1XC</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0002-3047-1845</orcidid><orcidid>https://orcid.org/0000-0001-5587-845X</orcidid><orcidid>https://orcid.org/0000-0002-7405-3119</orcidid><orcidid>https://orcid.org/0000-0003-4792-6479</orcidid><orcidid>https://orcid.org/0000-0002-4787-3285</orcidid><orcidid>https://orcid.org/0000-0003-3146-7263</orcidid><orcidid>https://orcid.org/0000-0003-1180-4138</orcidid><orcidid>https://orcid.org/0000-0001-5213-6207</orcidid><orcidid>https://orcid.org/0000-0002-4272-263X</orcidid><orcidid>https://orcid.org/0000-0003-0526-1114</orcidid><orcidid>https://orcid.org/0000-0003-2806-1254</orcidid><orcidid>https://orcid.org/0000-0001-5721-8973</orcidid><orcidid>https://orcid.org/0000-0002-6510-0681</orcidid><orcidid>https://orcid.org/0000-0002-0849-5867</orcidid><orcidid>https://orcid.org/0000-0003-2630-8073</orcidid><orcidid>https://orcid.org/0000-0003-4514-7906</orcidid><orcidid>https://orcid.org/0000-0003-4018-2569</orcidid><orcidid>https://orcid.org/0000-0002-1097-9908</orcidid><orcidid>https://orcid.org/0000-0002-4677-9182</orcidid><orcidid>https://orcid.org/0000-0001-6305-7272</orcidid><orcidid>https://orcid.org/0000-0001-5978-3247</orcidid></search><sort><creationdate>20210801</creationdate><title>SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy</title><author>Steiger, Sarah ; Currie, Thayne ; Brandt, Timothy D. ; Guyon, Olivier ; Kuzuhara, Masayuki ; Chilcote, Jeffrey ; Groff, Tyler D. ; Lozi, Julien ; Walter, Alexander B. ; Fruitwala, Neelay ; Bailey, III, John I. ; Zobrist, Nicholas ; Swimmer, Noah ; Lipartito, Isabel ; Smith, Jennifer Pearl ; Bockstiegel, Clint ; Meeker, Seth R. ; Coiffard, Gregoire ; Dodkins, Rupert ; Szypryt, Paul ; Davis, Kristina K. ; Daal, Miguel ; Bumble, Bruce ; Vievard, Sebastien ; Sahoo, Ananya ; Deo, Vincent ; Jovanovic, Nemanja ; Martinache, Frantz ; Doppmann, Greg ; Tamura, Motohide ; Kasdin, N. Jeremy ; Mazin, Benjamin A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c477t-a1077fa58bc38a00e1a88696a27fe242ac94ceeec2c3298efe72f5ac574aa283</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Adaptive control</topic><topic>Adaptive optics</topic><topic>Astrometry</topic><topic>Astronomy</topic><topic>Astrophysics</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>DIFFRACTION</topic><topic>Discrimination</topic><topic>Extrasolar planets</topic><topic>INDUCTANCE</topic><topic>INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY</topic><topic>KINETICS</topic><topic>LUMINOSITY</topic><topic>MICROWAVE RADIATION</topic><topic>OPTICS</topic><topic>PHOTOMETRY</topic><topic>Physics</topic><topic>Point spread functions</topic><topic>Reference stars</topic><topic>SIGNAL-TO-NOISE RATIO</topic><topic>SPECTRA</topic><topic>SPECTROSCOPY</topic><topic>Spectrum analysis</topic><topic>STARS</topic><topic>STOCHASTIC PROCESSES</topic><topic>Subtraction</topic><topic>TELESCOPES</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Steiger, Sarah</creatorcontrib><creatorcontrib>Currie, Thayne</creatorcontrib><creatorcontrib>Brandt, Timothy D.</creatorcontrib><creatorcontrib>Guyon, Olivier</creatorcontrib><creatorcontrib>Kuzuhara, Masayuki</creatorcontrib><creatorcontrib>Chilcote, Jeffrey</creatorcontrib><creatorcontrib>Groff, Tyler D.</creatorcontrib><creatorcontrib>Lozi, Julien</creatorcontrib><creatorcontrib>Walter, Alexander B.</creatorcontrib><creatorcontrib>Fruitwala, Neelay</creatorcontrib><creatorcontrib>Bailey, III, John I.</creatorcontrib><creatorcontrib>Zobrist, Nicholas</creatorcontrib><creatorcontrib>Swimmer, Noah</creatorcontrib><creatorcontrib>Lipartito, Isabel</creatorcontrib><creatorcontrib>Smith, Jennifer Pearl</creatorcontrib><creatorcontrib>Bockstiegel, Clint</creatorcontrib><creatorcontrib>Meeker, Seth R.</creatorcontrib><creatorcontrib>Coiffard, Gregoire</creatorcontrib><creatorcontrib>Dodkins, Rupert</creatorcontrib><creatorcontrib>Szypryt, Paul</creatorcontrib><creatorcontrib>Davis, Kristina K.</creatorcontrib><creatorcontrib>Daal, Miguel</creatorcontrib><creatorcontrib>Bumble, Bruce</creatorcontrib><creatorcontrib>Vievard, Sebastien</creatorcontrib><creatorcontrib>Sahoo, Ananya</creatorcontrib><creatorcontrib>Deo, Vincent</creatorcontrib><creatorcontrib>Jovanovic, Nemanja</creatorcontrib><creatorcontrib>Martinache, Frantz</creatorcontrib><creatorcontrib>Doppmann, Greg</creatorcontrib><creatorcontrib>Tamura, Motohide</creatorcontrib><creatorcontrib>Kasdin, N. Jeremy</creatorcontrib><creatorcontrib>Mazin, Benjamin A.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>OSTI.GOV</collection><jtitle>The Astronomical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Steiger, Sarah</au><au>Currie, Thayne</au><au>Brandt, Timothy D.</au><au>Guyon, Olivier</au><au>Kuzuhara, Masayuki</au><au>Chilcote, Jeffrey</au><au>Groff, Tyler D.</au><au>Lozi, Julien</au><au>Walter, Alexander B.</au><au>Fruitwala, Neelay</au><au>Bailey, III, John I.</au><au>Zobrist, Nicholas</au><au>Swimmer, Noah</au><au>Lipartito, Isabel</au><au>Smith, Jennifer Pearl</au><au>Bockstiegel, Clint</au><au>Meeker, Seth R.</au><au>Coiffard, Gregoire</au><au>Dodkins, Rupert</au><au>Szypryt, Paul</au><au>Davis, Kristina K.</au><au>Daal, Miguel</au><au>Bumble, Bruce</au><au>Vievard, Sebastien</au><au>Sahoo, Ananya</au><au>Deo, Vincent</au><au>Jovanovic, Nemanja</au><au>Martinache, Frantz</au><au>Doppmann, Greg</au><au>Tamura, Motohide</au><au>Kasdin, N. Jeremy</au><au>Mazin, Benjamin A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy</atitle><jtitle>The Astronomical journal</jtitle><date>2021-08-01</date><risdate>2021</risdate><volume>162</volume><issue>2</issue><spage>44</spage><pages>44-</pages><issn>0004-6256</issn><issn>1538-3881</issn><eissn>1538-3881</eissn><abstract>We report the direct imaging discovery of a low-mass companion to the nearby accelerating A star, HIP 109427, with the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument coupled with the Microwave Kinetic Inductance Detector Exoplanet Camera (MEC) and CHARIS integral field spectrograph. CHARIS data reduced with reference star point spread function (PSF) subtraction yield 1.1–2.4
μ
m spectra. MEC reveals the companion in
Y
and
J
band at a comparable signal-to-noise ratio using stochastic speckle discrimination, with no PSF subtraction techniques. Combined with complementary follow-up
L
p
photometry from Keck/NIRC2, the SCExAO data favors a spectral type, effective temperature, and luminosity of M4–M5.5, 3000–3200 K, and
log
10
(
L
/
L
⊙
)
=
−
2.28
−
0.04
+
0.04
, respectively. Relative astrometry of HIP 109427 B from SCExAO/CHARIS and Keck/NIRC2, and complementary Gaia–Hipparcos absolute astrometry of the primary favor a semimajor axis of 6.55
+3.0
−0.48
au, an eccentricity of
0.54
−
0.15
+
0.28
, an inclination of
66.7
−
14
+
8.5
degrees, and a dynamical mass of
0.280
−
0.059
+
0.18
M
⊙
. This work shows the potential for extreme AO systems to utilize speckle statistics in addition to widely used postprocessing methods to directly image faint companions to nearby stars near the telescope diffraction limit.</abstract><cop>Madison</cop><pub>IOP Publishing</pub><doi>10.3847/1538-3881/ac02cc</doi><orcidid>https://orcid.org/0000-0002-3047-1845</orcidid><orcidid>https://orcid.org/0000-0001-5587-845X</orcidid><orcidid>https://orcid.org/0000-0002-7405-3119</orcidid><orcidid>https://orcid.org/0000-0003-4792-6479</orcidid><orcidid>https://orcid.org/0000-0002-4787-3285</orcidid><orcidid>https://orcid.org/0000-0003-3146-7263</orcidid><orcidid>https://orcid.org/0000-0003-1180-4138</orcidid><orcidid>https://orcid.org/0000-0001-5213-6207</orcidid><orcidid>https://orcid.org/0000-0002-4272-263X</orcidid><orcidid>https://orcid.org/0000-0003-0526-1114</orcidid><orcidid>https://orcid.org/0000-0003-2806-1254</orcidid><orcidid>https://orcid.org/0000-0001-5721-8973</orcidid><orcidid>https://orcid.org/0000-0002-6510-0681</orcidid><orcidid>https://orcid.org/0000-0002-0849-5867</orcidid><orcidid>https://orcid.org/0000-0003-2630-8073</orcidid><orcidid>https://orcid.org/0000-0003-4514-7906</orcidid><orcidid>https://orcid.org/0000-0003-4018-2569</orcidid><orcidid>https://orcid.org/0000-0002-1097-9908</orcidid><orcidid>https://orcid.org/0000-0002-4677-9182</orcidid><orcidid>https://orcid.org/0000-0001-6305-7272</orcidid><orcidid>https://orcid.org/0000-0001-5978-3247</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0004-6256 |
| ispartof | The Astronomical journal, 2021-08, Vol.162 (2), p.44 |
| issn | 0004-6256 1538-3881 1538-3881 |
| language | eng |
| recordid | cdi_osti_scitechconnect_23159295 |
| source | IOP Publishing Free Content; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; IOPscience extra; Alma/SFX Local Collection |
| subjects | Adaptive control Adaptive optics Astrometry Astronomy Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY DIFFRACTION Discrimination Extrasolar planets INDUCTANCE INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY KINETICS LUMINOSITY MICROWAVE RADIATION OPTICS PHOTOMETRY Physics Point spread functions Reference stars SIGNAL-TO-NOISE RATIO SPECTRA SPECTROSCOPY Spectrum analysis STARS STOCHASTIC PROCESSES Subtraction TELESCOPES |
| title | SCExAO/MEC and CHARIS Discovery of a Low-mass, 6 au Separation Companion to HIP 109427 Using Stochastic Speckle Discrimination and High-contrast Spectroscopy |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T05%3A31%3A40IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=SCExAO/MEC%20and%20CHARIS%20Discovery%20of%20a%20Low-mass,%206%20au%20Separation%20Companion%20to%20HIP%20109427%20Using%20Stochastic%20Speckle%20Discrimination%20and%20High-contrast%20Spectroscopy&rft.jtitle=The%20Astronomical%20journal&rft.au=Steiger,%20Sarah&rft.date=2021-08-01&rft.volume=162&rft.issue=2&rft.spage=44&rft.pages=44-&rft.issn=0004-6256&rft.eissn=1538-3881&rft_id=info:doi/10.3847/1538-3881/ac02cc&rft_dat=%3Cproquest_osti_%3E2548660082%3C/proquest_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2548660082&rft_id=info:pmid/&rfr_iscdi=true |