Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52

Silverman, J. D.; Daddi, E.; Rujopakarn, W.; Renzini, A.; Mancini, C.; Bournaud, F.; Puglisi, A.; Rodighiero, G.; Liu, D.; Sargent, M.; Arimoto, N.; Bethermin, M.; Fensch, J.; Hayward, C. C.; Kartaltepe, J.; Kashino, D.; Koekemoer, A.; Magdis, G.; McCracken, H. J.; Nagao, T.; Sheth, K.; Smolčić, Vernesa; Valentino, F

doi:10.3847/1538-4357/aae64b

prikaz prve stranice dokumenta Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52

Preuzmi
PDF 2.79 MB

Znanstveni rad - Izvorni znanstveni rad

Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52

Astrophysical Journal, 868 (2018); 75. https://doi.org/10.3847/1538-4357/aae64b

Silverman, J. D.; Daddi, E.; Rujopakarn, W.; Renzini, A.; Mancini, C.; Bournaud, F.; Puglisi, A.; Rodighiero, G.; Liu, D.; Sargent, M.; Arimoto, N.; Bethermin, M.; Fensch, J.; Hayward, C. C.; Kartaltepe, J.; Kashino, D.; Koekemoer, A.; Magdis, G.; McCracken, H. J.; Nagao, T.; Sheth, K.; Smolčić, Vernesa; Valentino, F Više autora...

Citirajte ovaj rad

APA 6th Edition

Silverman, J. D., Daddi, E., Rujopakarn, W., Renzini, A., Mancini, C., Bournaud, F. ... Valentino, F. (2018). Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52. Astrophysical Journal, 868.. doi: 10.3847/1538-4357/aae64b

MLA 8th Edition

Silverman, J. D., et al. "Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52." Astrophysical Journal, vol. 868, 2018. https://doi.org/10.3847/1538-4357/aae64b

Chicago 17th Edition

Silverman, J. D., E. Daddi, W. Rujopakarn, A. Renzini, C. Mancini, F. Bournaud, A. Puglisi, et al. "Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52." Astrophysical Journal 868 (2018). https://doi.org/10.3847/1538-4357/aae64b

Harvard

Silverman, J. D., et al. (2018) 'Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52', Astrophysical Journal, 868. doi: 10.3847/1538-4357/aae64b

Vancouver

Silverman JD, Daddi E, Rujopakarn W, Renzini A, Mancini C, Bournaud F, i sur.. Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52. Astrophysical Journal [Internet]. 2018. [pristupljeno 23.10.2024.];868. doi: 10.3847/1538-4357/aae64b

IEEE

J. D. Silverman, et al., "Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52", Astrophysical Journal, vol. 868, 2018. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:397985. [Citirano: 23.10.2024.]

Za citiranje koristite ovu mrežnu adresu: https://urn.nsk.hr/urn:nbn:hr:217:397985

Prijavite se u repozitorij kako biste mogli spremiti objekt u svoju listu.

Podaci o radu

Naslov (engleski)	Concurrent Starbursts in Molecular Gas Disks within a Pair of Colliding Galaxies at z = 1.52
Autor	J. D. Silverman
Autor	E. Daddi
Autor	W. Rujopakarn
Autor	A. Renzini
Autor	C. Mancini
Autor	F. Bournaud
Autor	A. Puglisi
Autor	G. Rodighiero
Autor	D. Liu
Autor	M. Sargent
Autor	N. Arimoto
Autor	M. Bethermin
Autor	J. Fensch
Autor	C. C. Hayward
Autor	J. Kartaltepe
Autor	D. Kashino
Autor	A. Koekemoer
Autor	G. Magdis
Autor	H. J. McCracken
Autor	T. Nagao
Autor	K. Sheth
Autor	Vernesa Smolčić MBZ: 336180
Autor	F Valentino
Autorova ustanova	Sveučilište u Zagrebu Prirodoslovno-matematički fakultet (Fizički odsjek)
Znanstveno / umjetničko područje, polje i grana	PRIRODNE ZNANOSTI Fizika Astronomija i astrofizika
Sažetak (engleski)	We report on the discovery of a merger-driven starburst at z = 1.52, PACS-787, based on high signal-to-noise ALMA observations. CO(5–4) and continuum emission (850 μm) at a spatial resolution of 0 3 reveal two compact (r_1/2 ∼ 1 kpc) and interacting molecular gas disks at a separation of 8.6 kpc, indicative of an early stage in a merger. With an SFR of 991 Me_⊙ yr^−1 , this starburst event should occur closer to final coalescence, as is usually seen in hydrodynamical simulations. From the CO size, inclination, and velocity profile for both disks, the dynamical mass is calculated through a novel method that incorporates a calibration using simulations of galaxy mergers. Based on the dynamical mass, we measure (1) the molecular gas mass, independent from the CO luminosity, (2) the ratio of the total gas mass and the CO(1–0) luminosity (α_CO ≡ M_gas/ L’CO 1-0 ), and (3) the gas-to-dust ratio, with the latter two being lower than typically assumed. We find that the high star formation triggered in both galaxies is caused by a set of optimal conditions: a high gas mass/fraction, a short depletion time (τ_depl = 85 and 67 Myr) to convert gas into stars, and the interaction of likely counter-rotating molecular disks that may accelerate the loss of angular momentum. The state of interaction is further established by the detection of diffuse CO and continuum emission, tidal debris that bridges the two nuclei and is associated with stellar emission seen by HST/WFC3. This observation demonstrates the power of ALMA to study the dynamics of galaxy mergers at high redshift.
Ključne riječi (engleski)
Jezik	engleski
Vrsta publikacije	Znanstveni rad - Izvorni znanstveni rad
Status objave	Objavljen
Vrsta recenzije	Recenziran - međunarodna recenzija
Verzija publikacije	Objavljena verzija rada (izdavačev PDF)
Naslov časopisa	Astrophysical Journal
Brojčani podaci	vol. 868, 75
p-ISSN	0004-637X
e-ISSN	1538-4357
DOI	https://doi.org/10.3847/1538-4357/aae64b
URN:NBN	urn:nbn:hr:217:397985
Datum objave publikacije	2018
URL dokumenta	https://iopscience.iop.org/article/10.3847/1538-4357/aae64b
Vrsta resursa	Tekst
Prava pristupa	Otvoreni pristup
Uvjeti korištenja
Javna napomena	© 2018. The American Astronomical Society. Received 2018 July 6; Revised 2018 September 19; Accepted 2018 October 1; Published 2018 November 21.
Datum i vrijeme pohrane	2020-03-01 16:45:32