The Physical Properties of the SVS 13 Protobinary System: Two Circumstellar Disks and a Spiraling Circumbinary Disk in the Making Article Swipe

Ana Karla Díaz-Rodríguez , Guillem Anglada , Guillermo Blázquez-Calero , Mayra Osorio , José F. Gómez , G. A. Fuller , R. Estalella , J. M. Torrelles , S. Cabrit , Luis F. Rodrı́guez , Charlène Lefèvre , Enrique Macías , Carlos Carrasco‐González , Luis A. Zapata , I. de Gregorio‐Monsalvo , Paul T. P. Ho ·

YOU? · · 2021 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2111.11787

We present VLA and ALMA observations of the close (0.3" = 90 au separation) protobinary system SVS 13. We detect two small circumstellar disks (radii $\sim$12 and $\sim$9 au in dust, and $\sim$30 au in gas) with masses of $\sim$0.004-0.009 $M_{sun}$ for VLA 4A (the western component) and $\sim$0.009-0.030 $M_{sun}$ for VLA 4B (the eastern component). A circumbinary disk with prominent spiral arms extending $\sim$500 au and a mass of $\sim$0.052 $M_{sun}$ appears to be in the earliest stages of formation. The dust emission is more compact and with a very high optical depth toward VLA 4B, while toward VLA 4A the dust column density is lower, allowing the detection of stronger molecular transitions. We infer rotational temperatures of $\sim$140 K, on scales of $\sim$30 au, across the whole source, and a rich chemistry. Molecular transitions typical of hot corinos are detected toward both protostars, being stronger toward VLA 4A, with several ethylene glycol transitions detected only toward this source. There are clear velocity gradients, that we interpret in terms of infall plus rotation of the circumbinary disk, and purely rotation of the circumstellar disk of VLA 4A. We measured orbital proper motions and determined a total stellar mass of 1 $M_{sun}$. From the molecular kinematics we infer the geometry and orientation of the system, and stellar masses of $\sim$0.26 $M_{sun}$ for VLA 4A and $\sim$0.60 $M_{sun}$ for VLA 4B.

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Astrophysics Physics Circumbinary planet Protostar Circumstellar disk Star formation Rotation (mathematics) Circumstellar dust Astronomy Stars Geometry Mathematics

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Language: en
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DOI: https://doi.org/10.48550/arxiv.2111.11787

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Title: The Physical Properties of the SVS 13 Protobinary System: Two Circumstellar Disks and a Spiraling Circumbinary Disk in the Making

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Type: preprint

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Language: en

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Publication year: 2021

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Publication date: 2021-11-23

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Authors: Ana Karla Díaz-Rodríguez, Guillem Anglada, Guillermo Blázquez-Calero, Mayra Osorio, José F. Gómez, G. A. Fuller, R. Estalella, J. M. Torrelles, S. Cabrit, Luis F. Rodrı́guez, Charlène Lefèvre, Enrique Macías, Carlos Carrasco‐González, Luis A. Zapata, I. de Gregorio‐Monsalvo, Paul T. P. Ho

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Concepts: Astrophysics, Physics, Circumbinary planet, Protostar, Circumstellar disk, Star formation, Rotation (mathematics), Circumstellar dust, Astronomy, Stars, Geometry, Mathematics

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abstract_inverted_index.detect	19
abstract_inverted_index.glycol	153
abstract_inverted_index.infall	171
abstract_inverted_index.lower,	106
abstract_inverted_index.masses	37, 217
abstract_inverted_index.proper	191
abstract_inverted_index.purely	179
abstract_inverted_index.scales	122
abstract_inverted_index.spiral	61
abstract_inverted_index.stages	78
abstract_inverted_index.system	15
abstract_inverted_index.toward	94, 98, 142, 147, 157
abstract_inverted_index.$\sim$9	27
abstract_inverted_index.appears	72
abstract_inverted_index.compact	86
abstract_inverted_index.corinos	139
abstract_inverted_index.density	104
abstract_inverted_index.eastern	54
abstract_inverted_index.motions	192
abstract_inverted_index.optical	92
abstract_inverted_index.orbital	190
abstract_inverted_index.present	1
abstract_inverted_index.several	151
abstract_inverted_index.source,	129
abstract_inverted_index.source.	159
abstract_inverted_index.stellar	197, 216
abstract_inverted_index.system,	214
abstract_inverted_index.typical	136
abstract_inverted_index.western	45
abstract_inverted_index.$\sim$12	25
abstract_inverted_index.$\sim$30	32, 124
abstract_inverted_index.allowing	107
abstract_inverted_index.detected	141, 155
abstract_inverted_index.earliest	77
abstract_inverted_index.emission	83
abstract_inverted_index.ethylene	152
abstract_inverted_index.geometry	209
abstract_inverted_index.measured	189
abstract_inverted_index.rotation	173, 180
abstract_inverted_index.stronger	111, 146
abstract_inverted_index.velocity	163
abstract_inverted_index.$M_{sun}$	40, 49, 71, 220, 226
abstract_inverted_index.$\sim$140	119
abstract_inverted_index.$\sim$500	64
abstract_inverted_index.Molecular	134
abstract_inverted_index.detection	109
abstract_inverted_index.extending	63
abstract_inverted_index.interpret	167
abstract_inverted_index.molecular	112, 204
abstract_inverted_index.prominent	60
abstract_inverted_index.$M_{sun}$.	201
abstract_inverted_index.$\sim$0.26	219
abstract_inverted_index.$\sim$0.60	225
abstract_inverted_index.chemistry.	133
abstract_inverted_index.component)	46
abstract_inverted_index.determined	194
abstract_inverted_index.formation.	80
abstract_inverted_index.gradients,	164
abstract_inverted_index.kinematics	205
abstract_inverted_index.rotational	116
abstract_inverted_index.$\sim$0.052	70
abstract_inverted_index.component).	55
abstract_inverted_index.orientation	211
abstract_inverted_index.protobinary	14
abstract_inverted_index.protostars,	144
abstract_inverted_index.separation)	13
abstract_inverted_index.transitions	135, 154
abstract_inverted_index.circumbinary	57, 176
abstract_inverted_index.observations	5
abstract_inverted_index.temperatures	117
abstract_inverted_index.transitions.	113
abstract_inverted_index.circumstellar	22, 183
abstract_inverted_index.$\sim$0.004-0.009	39
abstract_inverted_index.$\sim$0.009-0.030	48
cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	16
citation_normalized_percentile.value	0.20683785
citation_normalized_percentile.is_in_top_1_percent	False
citation_normalized_percentile.is_in_top_10_percent	False