2019ApJ...874...82H


Query : 2019ApJ...874...82H

2019ApJ...874...82H - Astrophys. J., 874, 82-82 (2019/March-3)

PTF14jg: the remarkable outburst and post-burst evolution of a previously anonymous galactic star.

HILLENBRAND L.A., MILLER A.A., CARPENTER J.M., KASLIWAL M.M., ISAACSON H., TANG S., JOSHI V., BANERJEE D.P.K. and CUTRI R.M.

Abstract (from CDS):

We report the outbursting source PTF 14jg, which, prior to the onset of its late 2013 eruption, was a faint, unstudied, and virtually uncataloged star. The salient features of the PTF 14jg outburst are (i) projected location near the W4 H II region and radial velocity consistent with physical association; (ii) a light curve that underwent an ∼6-7 mag optical (R-band) through mid-infrared (L-band) brightening on a timescale of a few months, peaked and then faded by ∼3 mag, but plateaued still >3.5 mag above quiescence by ∼8 months post-peak, lasting to at least 4 yr after eruption; (iii) strong outflow signatures with velocities reaching -530 kms–1; (iv) a low-gravity and broad (∼100-150 kms–1 FWHM) optical absorption-line spectrum that systematically changes its spectral type with wavelength; (v) lithium; and (vi) ultraviolet and infrared excess. We tentatively identify the outburst as exhibiting characteristics of a young star FU Ori event. However, the burst would be unusually hot, with an absorption spectrum exhibiting high-excitation (∼11,000-15,000 K) lines in the optical and no evidence of CO in the near-infrared, in addition to exhibiting an unusual light curve. We thus also consider alternative scenarios-including various forms of novae, nuclear-burning instabilities, massive star events, and mergers-finding them all inferior to the atypically hot FU Ori star classification. The source eventually may be interpreted as a new category of young star outburst with a larger amplitude and shorter rise time than most FU Ori-like events.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): circumstellar matter - infrared: stars - stars: activity - stars: pre-main sequence - stars: variables: general - stars: winds, outflows

VizieR on-line data: <Available at CDS (J/ApJ/874/82): table1.dat table3.dat fig6a-b.dat fig7a-b.dat table6.dat>

Simbad objects: 57

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Number of rows : 57
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 996 3
2 NAME Heart Nebula HII 02 32.7 +61 27           ~ 303 1
3 IC 1805 OpC 02 32 50 +61 28.3   7.03 6.5     ~ 494 2
4 PTF 14jg * 02 40 30.14 +60 52 45.5           ~ 8 0
5 2MASS J02403063+6051272 * 02 40 30.6361706232 +60 51 27.246408876           ~ 1 0
6 2MASS J02403914+6052201 * 02 40 39.1409648088 +60 52 20.220560904           ~ 1 0
7 [HCS2001] 3927 MoC 02 41.7 +60 50           ~ 1 0
8 IC 1848 OpC 02 51 25 +60 25.1   6.87 6.5     ~ 467 2
9 NAME Per Arm PoG 03 30 +45.0           ~ 1385 0
10 NAME UGC 2773 OT2009-1 SN? 03 32 07.24 +47 47 39.6           ~ 50 1
11 V* UX Ori Ae* 05 04 29.9878898040 -03 47 14.286732072 10.25 10.93 8.70 9.62 9.43 A4IVe 351 1
12 V* RW Aur TT* 05 07 49.5662483 +30 24 05.177426   10.86 9.60 9.95   K1/5e+K5e 750 0
13 V* V582 Aur Or* 05 25 51.9742464144 +34 52 30.100223352   17.0 14.78 13.49 12.23 ~ 24 0
14 V* V883 Ori Or* 05 38 18.1018261392 -07 02 26.017707120   14.80       F:I: 135 0
15 V* FU Ori Or* 05 45 22.3647842544 +09 04 12.291320064   10.72 9.60     F0Iab 761 1
16 V* V1647 Ori Or* 05 46 13.1370578472 -00 06 04.885093296     18.1     ~ 256 1
17 V* V899 Mon Or* 06 09 19.2451557192 -06 41 55.882661856           ~ 21 0
18 V* RR Pic No* 06 35 36.0630277104 -62 38 24.291215844   12.407 12.449 12.675 12.385 ~ 332 0
19 NGC 2264 OpC 06 40 52 +09 52.6           ~ 1686 0
20 V* V900 Mon Or* 06 57 22.2231738936 -08 23 17.690708868   15.94 14.71     ~ 25 0
21 V* V960 Mon Or* 06 59 31.5890411256 -04 05 27.765639744   16.11 14.94 13.92 12.67 ~ 36 1
22 V* V838 Mon ** 07 04 04.8221494992 -03 50 50.648894412   15.5   15.18 14.51 M10+B3V 397 0
23 2MASS J07092139-1029344 Y*O 07 09 21.3947971032 -10 29 34.509116688           ~ 11 0
24 EM* MWC 560 Sy* 07 25 51.2842107720 -07 44 08.084175396   10.01 9.70 10.60   M4ep+Beq 199 0
25 V* V445 Pup No* 07 37 56.8797787992 -25 56 58.837610328       13.654   ~ 156 0
26 V* U Gem CV* 07 55 05.2324414746 +22 00 05.044127985   15.3 14.54     DA 1079 0
27 V* Z Cam CV* 08 25 13.1986690656 +73 06 39.284964108   12.006 11.927 11.712   ~ 505 0
28 V* T Pyx CV* 09 04 41.5061511720 -32 22 47.502932700           ~ 405 0
29 * eta Car Em* 10 45 03.5377808928 -59 41 04.051599720 6.37 7.03 6.48 4.90 4.41 OBepec 2330 0
30 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 613 0
31 HD 325367 Or* 16 03 05.4915085848 -40 18 25.426727676   11.40 8.50     M0 313 0
32 NAME Upper Sco Association As* 16 12 -23.4           ~ 1201 1
33 IRAS 16289-4449 Or* 16 32 32.19264 -44 55 30.6552       15.95   ~ 128 1
34 V* V2540 Oph No* 17 37 34.41 -16 23 17.9           ~ 48 0
35 V* V4334 Sgr CV* 17 52 32.69352 -17 41 08.0160           F2Ia 352 0
36 V* V1309 Sco No* 17 57 32.9368332984 -30 43 09.965039880   16.9   14.8   ~ 212 0
37 V* V5558 Sgr No* 18 10 18.2602518799 -18 46 52.222364370           ~ 62 0
38 V* FG Ser Sy* 18 15 07.1022496320 -00 18 52.281676656     11.87     M3e 109 0
39 V* V4739 Sgr No* 18 24 46.04 -30 00 41.1           ~ 25 0
40 V* V3890 Sgr LP* 18 30 43.2877623168 -24 01 08.944843980     15.944 14.798 12.611 ~ 170 0
41 V* V4332 Sgr CV* 18 50 36.6958376520 -21 23 28.925017944         14.37 K8/M0e 158 0
42 PN A66 58 PN 19 18 20.476 +01 46 59.62           [WC4] 301 0
43 Parsamian 21 Or* 19 29 00.8740757136 +09 38 42.862226208   15.18 14.07 13.93   F5Iabe 84 0
44 2MASS J19310560+1827525 Or* 19 31 05.5881891528 +18 27 52.234225920           ~ 15 0
45 V* FG Sgr Mi* 19 44 39.6597051552 -12 24 02.343914028     11.71     M6: 10 0
46 V* V1515 Cyg Or* 20 23 48.0158573016 +42 12 25.781279076   15.26 13.39 12.03   G0/G2Ib 226 0
47 NAME Cyg X Cld 20 28 41 +41 10.2           ~ 719 1
48 V* V2492 Cyg Or* 20 51 26.2367188536 +44 05 23.869354488   20.2   18.3   F-GII/MI 82 0
49 V* V2493 Cyg Or* 20 58 17.0280367392 +43 53 43.341681156   19.678 18.023 17.67 15.233 K7/M0e 106 0
50 NGC 7000 Cl* 20 58 47 +44 19.8           ~ 381 0
51 EM* LkHA 190 Or* 20 58 53.7335347296 +44 15 28.388727720   14.26 12.33 12.13   F7/G3I/IIe 491 0
52 EM* LkHA 120 Or* 21 01 09.2070147480 +50 21 44.806779000 13.37 13.09 11.99 11.75   F0/F4-G5 189 1
53 V* SS Cyg CV* 21 42 42.8034497592 +43 35 09.867842484 11.07 12.651 12.032 9.326   K5V 1253 1
54 V* V1735 Cyg Or* 21 47 20.6628414360 +47 32 03.857457372           ~ 155 0
55 * alf Aqr * 22 05 47.0359315 -00 19 11.456766 4.65 3.90 2.94 2.27 1.76 G2Ib 428 0
56 * 6 Cas ** 23 48 50.17052 +62 12 52.2577       6.60   A2.5(I)+O9.8II 185 0
57 * rho Cas LP* 23 54 23.0325302520 +57 29 57.774737400 7.00 5.85 4.59 3.63 2.89 G2_0 375 0

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2022.07.05-18:41:21

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