NGC 1266 AS A LOCAL CANDIDATE FOR RAPID CESSATION OF STAR FORMATION
NGC 1266 AS A LOCAL CANDIDATE FOR RAPID CESSATION OF STAR FORMATION
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NGC 1266 是恒星形成迅速停止的本地候选者
DOI:
10.1088/0004-637x/780/2/186
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
Alatalo K
中科院分区:
文献类型:
--
作者:
Alatalo K
We present new Spectrographic Areal Unit for Research on Optical Nebulae (SAURON) integral-field spectroscopy and Swift Ultraviolet Optical Telescope (UVOT) observations of molecular outflow host galaxy NGC 1266 that indicate NGC 1266 has experienced a rapid cessation of star formation. Both the SAURON maps of stellar population age and the Swift UVOT observations demonstrate the presence of young (< 1 Gyr) stellar populations within the central 1 kpc, while existing Combined Array for Research in Millimeter-Wave Astronomy CO (1–0) maps indicate that the sites of current star formation are constrained to only the inner few hundred parsecs of the galaxy. The optical spectrum of NGC 1266 from Moustakas & Kennicutt reveal a characteristic poststarburst (K+ A) stellar population, and Davis et al. confirm that ionized gas emission in the system originate from a shock. Galaxies with K+ A spectra and shock-like ionized gas line ratios may comprise an important, overlooked segment of the poststarburst population, containing exactly those objects in which the active galactic nucleus (AGN) is actively expelling the star-forming material. While AGN activity is not the likely driver of the poststarburst event that occurred 500 Myr ago, the faint spiral structure seen in the Hubble Space Telescope Wide-field Camera 3 Y-, J-and H-band imaging seems to point to the possibility of gravitational torques being the culprit. If the molecular gas were driven into the center at the same time as the larger scale galaxy disk underwent quenching, the AGN might be able to sustain the presence of molecular gas for≳ 1 Gyr by cyclically injecting turbulent energy into the dense molecular gas via a radio jet, inhibiting star formation.
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DOI:
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发表时间:
2008
期刊:
影响因子:
--
作者:
P. Papadopoulos;Attila Kovacs;A. S. Evans;A. S. Evans;A. S. Evans;Pieter Barthel
通讯作者:
Pieter Barthel
DOI:
10.1111/j.1365-2966.2006.09994.x
发表时间:
2006-02
影响因子:
4.8
作者:
D. Croton;G. Kauffmann;V. Springel;S. White;G. Lucia;A. Jenkins;J. Navarro;C. Frenk;Liang Gao-Lian
通讯作者:
D. Croton;G. Kauffmann;V. Springel;S. White;G. Lucia;A. Jenkins;J. Navarro;C. Frenk;Liang Gao-Lian
DOI:
10.1111/j.1365-2966.2011.20187.x
发表时间:
2011
影响因子:
4.8
作者:
J. DeBuhr;E. Quataert;Chung
通讯作者:
Chung
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
C. Struck;C. Dobbs;Jeong
通讯作者:
Jeong
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
S. Nayakshin;A. King
通讯作者:
A. King