2018ApJ...855...51S


Query : 2018ApJ...855...51S

2018ApJ...855...51S - Astrophys. J., 855, 51-51 (2018/March-1)

After the fall: the dust- and gas in E+A post-starburst galaxies.

SMERCINA A., SMITH J.D.T., DALE D.A., FRENCH K.D., CROXALL K.V., ZHUKOVSKA S., TOGI A., BELL E.F., CROCKER A.F., DRAINE B.T., JARRETT T.H., TREMONTI C., YANG Y. and ZABLUDOFF A.I.

Abstract (from CDS):

The traditional picture of post-starburst galaxies as dust- and gas-poor merger remnants, rapidly transitioning to quiescence, has been recently challenged. Unexpected detections of a significant interstellar medium (ISM) in many post-starburst galaxies raise important questions. Are they truly quiescent, and if so, what mechanisms inhibit further star formation? What processes dominate their ISM energetics? We present an infrared spectroscopic and photometric survey of 33 E+A post-starbursts selected by the Sloan Digital Sky Survey, aimed at resolving these questions. We find compact, warm dust reservoirs with high PAH abundances and total gas and dust masses significantly higher than expected from stellar recycling alone. Both polycyclic aromatic hydrocarbon (PAH)/total infrared (TIR) and dust-to-burst stellar mass ratios are seen to decrease with post-burst age, indicative of the accumulating effects of dust destruction and an incipient transition to hot, early-type ISM properties. Their infrared spectral properties are unique, with dominant PAH emission, very weak nebular lines, unusually strong H2 rotational emission, and deep [C II] deficits. There is substantial scatter among star formation rate (SFR) indicators, and both PAH and TIR luminosities provide overestimates. Even as potential upper limits, all tracers show that the SFR has typically experienced a decline of more than two orders of magnitude since the starburst and that the SFR is considerably lower than expected given both their stellar masses and molecular gas densities. These results paint a coherent picture of systems in which star formation was, indeed, rapidly truncated, but in which the ISM was not completely expelled, and is instead supported against collapse by latent or continued injection of turbulent or mechanical heating. The resulting aging burst populations provide a "high-soft" radiation field that seemingly dominates the E+A galaxies' unusual ISM energetics.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: evolution - galaxies: interactions - galaxies: ISM - galaxies: starburst

Errata: erratum vol. 859, art. 77 (2018)

Simbad objects: 45

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Number of rows : 45
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12095 1
2 2MASX J00445922-0853228 LIN 00 44 59.2386710424 -08 53 22.973523540   15.09 14.34 13.99   ~ 26 1
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10530 1
4 NGC 1097 LIN 02 46 19.059 -30 16 29.68 10.46 9.97 9.48 8.72 9.8 ~ 1277 3
5 NGC 1266 AGN 03 16 00.7739640240 -02 25 37.827013584   14   12.46   ~ 287 1
6 Mrk 1074 LIN 03 16 54.9175323408 -00 02 31.266170592   15.4       ~ 28 0
7 2MASX J07454953+3122418 Sy2 07 45 49.5050926440 +31 22 42.134094444           ~ 6 0
8 2MASX J07511426+3425051 LIN 07 51 14.3008142208 +34 25 05.529815688           ~ 6 0
9 UGC 4305 IG 08 19 04.9864630512 +70 43 13.086910452 12.06 11.72 11.39 11.11   ~ 743 2
10 Z 119-101 GiG 08 27 01.3920061152 +21 42 24.410127024   14.8       ~ 35 0
11 LEDA 1530579 G 08 34 33.7079920656 +17 20 46.347777996           ~ 13 0
12 NAME IRAS F08572+3915 NW LIN 09 00 25.364 +39 03 54.23     16.66     ~ 405 1
13 SDSS J092619.29+184040.9 G 09 26 19.2958024152 +18 40 40.980118224           ~ 5 0
14 2MASX J09265766+4231369 G 09 26 57.6898287744 +42 31 36.529738392           ~ 8 0
15 UGC 5101 Sy1 09 35 51.6045544584 +61 21 11.589382368   15.20 15.50     ~ 551 4
16 2MASX J09442693+0429569 LIN 09 44 26.9652200520 +04 29 56.781210768           ~ 13 0
17 2MASX J09481868+0230043 LIN 09 48 18.6774069192 +02 30 04.277223576           ~ 12 0
18 M 81 Sy2 09 55 33.1726556496 +69 03 55.062505368   7.89 6.94     ~ 4260 3
19 NGC 3198 EmG 10 19 54.990 +45 32 58.88 10.83 10.87 10.33     ~ 870 1
20 LEDA 1664728 G 10 22 00.7860881376 +22 09 47.486937060           ~ 8 0
21 SDSS J103342.71+210740.7 G 10 33 42.7057424376 +21 07 40.715016636           ~ 7 0
22 2MASX J10375735+4614402 LIN 10 37 57.3841460304 +46 14 40.616779776           ~ 12 0
23 SDSS J105220.44+054941.5 G 10 52 20.4493881120 +05 49 41.592572796           ~ 11 0
24 SDSS J110540.70+055954.2 G 11 05 40.7031223752 +05 59 54.242916504           ~ 9 0
25 UGC 6231 rG 11 11 17.9602630608 +11 33 15.824932272   15.3       ~ 17 0
26 MCG+10-16-112 G 11 19 07.6343046096 +58 03 14.334705000   15.1       ~ 22 0
27 2MASX J11530653+6417567 Sy2 11 53 06.4565710176 +64 17 56.548398804           ~ 8 0
28 SDSS J121702.42+390437.3 G 12 17 02.4632827080 +39 04 37.453827720           ~ 8 0
29 NGC 4559 H2G 12 35 57.6402869976 +27 57 35.859278160   10.46 10.01     ~ 593 1
30 Mrk 779 G 12 39 36.0437604432 +12 26 20.021340408   16.5       ~ 29 0
31 2dFGRS TGN253Z244 LIN 12 44 51.6954840984 -01 45 35.744531508   17.855   16.700   ~ 7 0
32 MCG+09-21-043 LIN 12 46 26.8490585376 +50 47 31.340853888   15.5       ~ 18 0
33 Mrk 239 Sy2 13 05 25.8215702280 +53 35 30.261477696   15.3       ~ 32 0
34 NAME OKM2018 SWIFT J1344.7+5588 Sy2 13 44 42.1883001096 +55 53 13.596220932   15.68 14.91     ~ 883 3
35 2MASX J14481604+1733055 LIN 14 48 16.048 +17 33 05.93           ~ 17 0
36 SDSS J145505.44+131651.6 LIN 14 55 05.4465695736 +13 16 51.611153160           ~ 6 0
37 87GB 150658.6+374440 LIN 15 08 55.0937319288 +37 33 29.846803248           ~ 9 0
38 IC 4553 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 2872 4
39 MCG+07-33-049 LIN 16 10 20.4760832928 +41 51 17.589854484   15.2       ~ 29 0
40 2MASXI J1613301+510335 GiP 16 13 30.1885672344 +51 03 35.600325300           ~ 20 2
41 2MASX J16210081+2110063 LIN 16 21 00.8124979560 +21 10 06.099119328   15.4       ~ 11 0
42 2MASX J16270254+4328340 Sy2 16 27 02.5557944232 +43 28 33.950210916           ~ 31 0
43 2MASX J21050870-0523592 G 21 05 08.6774969064 -05 23 59.412514992   16.48   15.13   ~ 11 0
44 2MASX J21140054+0032067 G 21 14 00.5329240920 +00 32 06.387317988   14.9       ~ 16 0
45 LEDA 1180817 G 22 55 06.7998478104 +00 58 39.974957616           ~ 13 0

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2023.01.28-12:22:20

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