Universität zu Köln

Diaz-Rodriguez, Ana K., Anglada, Guillem, Blazquez-Calero, Guillermo, Osorio, Mayra ORCID: 0000-0002-6737-5267, Gomez, Jose F., Fuller, Gary A., Estalella, Robert ORCID: 0000-0001-7341-8641, Torrelles, Jose M., Cabrit, Sylvie, Rodriguez, Luis F. ORCID: 0000-0003-2737-5681, Lefevre, Charlene, Macias, Enrique ORCID: 0000-0003-1283-6262, Carrasco-Gonzalez, Carlos, Zapata, Luis A., de Gregorio-Monsalvo, Itziar ORCID: 0000-0003-4518-407X and Ho, Paul T. P. (2022). The Physical Properties of the SVS 13 Protobinary System: Two Circumstellar Disks and a Spiraling Circumbinary Disk in the Making. Astrophys. J., 930 (1). BRISTOL: IOP Publishing Ltd. ISSN 1538-4357

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Abstract

We present Very Large Array (VLA) and Atacama Large Millimeter/submillimeter Array (ALMA) observations of the close (0 3 = 90 au separation) protobinary system SVS 13. We detect two small circumstellar disks (radii similar to 12 and similar to 9 au in dust, and similar to 30 au in gas) with masses of similar to 0.004-0.009 M-circle dot for VLA 4A (the western component) and similar to 0.009-0.030 M. for VLA 4B (the eastern component). A circumbinary disk with prominent spiral arms extending similar to 500 au and a mass of similar to 0.052 M. 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 similar to 140 K, on scales of similar to 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, which we interpret in terms of infall plus rotation of the circumbinary disk, and pure rotation of the circumstellar disk of VLA 4A. We measured orbital proper motions and determined a total stellar mass of 1 M-circle dot. From the molecular kinematics, we infer the geometry and orientation of the system, and stellar masses of similar to 0.26 M-circle dot for VLA 4A and similar to 0.60 M-circle dot for VLA 4B.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Diaz-Rodriguez, Ana K. UNSPECIFIED UNSPECIFIED UNSPECIFIED Anglada, Guillem UNSPECIFIED UNSPECIFIED UNSPECIFIED Blazquez-Calero, Guillermo UNSPECIFIED UNSPECIFIED UNSPECIFIED Osorio, Mayra UNSPECIFIED orcid.org/0000-0002-6737-5267 UNSPECIFIED Gomez, Jose F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fuller, Gary A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Estalella, Robert UNSPECIFIED orcid.org/0000-0001-7341-8641 UNSPECIFIED Torrelles, Jose M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cabrit, Sylvie UNSPECIFIED UNSPECIFIED UNSPECIFIED Rodriguez, Luis F. UNSPECIFIED orcid.org/0000-0003-2737-5681 UNSPECIFIED Lefevre, Charlene UNSPECIFIED UNSPECIFIED UNSPECIFIED Macias, Enrique UNSPECIFIED orcid.org/0000-0003-1283-6262 UNSPECIFIED Carrasco-Gonzalez, Carlos UNSPECIFIED UNSPECIFIED UNSPECIFIED Zapata, Luis A. UNSPECIFIED UNSPECIFIED UNSPECIFIED de Gregorio-Monsalvo, Itziar UNSPECIFIED orcid.org/0000-0003-4518-407X UNSPECIFIED Ho, Paul T. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-694997
DOI:	10.3847/1538-4357/ac3b50
Journal or Publication Title:	Astrophys. J.
Volume:	930
Number:	1
Date:	2022
Publisher:	IOP Publishing Ltd
Place of Publication:	BRISTOL
ISSN:	1538-4357
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language MULTIPLICITY VANDAM SURVEY; COMPLEX ORGANIC-MOLECULES; VLA/ALMA NASCENT DISK; PROTOPLANETARY DISK; IRAS 16293-2422; HH 7-11; STAR-FORMATION; RADIO-SOURCES; BINARY; STELLAR Multiple languages Astronomy & Astrophysics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/69499