2009ApJ...700...56B

Query : 2009ApJ...700...56B

2009ApJ...700...56B - Astrophys. J., 700, 56-62 (2009/July-3)

Real-time optical spectroscopy of vacuum ultraviolet irradiated Pyrene:H2O interstellar ice.

BOUWMAN J., PAARDEKOOPER D.M., CUPPEN H.M., LINNARTZ H. and ALLAMANDOLA L.J.

Abstract (from CDS):

This paper describes a near-UV/VIS study of a pyrene:H2 O interstellar ice analogue at 10 K using optical absorption spectroscopy. A new experimental approach makes it possible to irradiate the sample with vacuum ultraviolet (VUV) light (7-10.5 eV) while simultaneously recording spectra in the 240-1000 nm range with subsecond time resolution. Both spectroscopic and dynamic information on VUV processed ices are obtained in this way. This provides a powerful tool to follow, in situ and in real time, the photophysical and photochemical processes induced by VUV irradiation of a polycyclic aromatic hydrocarbon containing inter- and circumstellar ice analogue.
Result. on the VUV photolysis of a prototype sample–strongly diluted pyrene in H2 O ice–are presented. In addition to the pyrene cation (Py+), other products–hydroxypyrene (PyOH), possibly hydroxypyrene cation (PyOH+), and pyrene/pyrenolate anion (Py–/PyO–)–are observed. It is found that the charge remains localized in the ice, also after the VUV irradiation is stopped. The astrochemical implications and observational constraints are discussed.

Abstract Copyright: ∼

Journal keyword(s): astrochemistry - ISM: molecules - methods: laboratory - molecular processes

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 EM* MWC 297 Ae* 18 27 39.5265500160 -03 49 52.133050776 15.57 14.34 12.31 11.34   B1.5Ve 315 0

Query : 2009ApJ...700...56B

Basic data :
EM* MWC 297 -- Herbig Ae/Be Star
Other object types: otypes_help 		* (2019AJ,GSC,...), Em* (EM*,SS73,...), Or* (2017ARep), X ([DMS2006],[VOE2005]), IR (IRAS,RAFGL), Ae* (1999AJ), Y*O (2023AJ), Ae? (2003AJ), Er* (2012A&A), Y*? (2019ApJ), V* (V*), NIR (2MASS)
ICRS coord. (ep=J2000) : 		18 27 39.5265500160 -03 49 52.133050776 (Optical) [ 0.0270 0.0245 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		18 25 01.2763674577 -03 51 46.649708853 [ 0.0270 0.0245 90 ]
Gal coord. (ep=J2000) : 		026.8016998677036 +03.5260822235307 [ 0.0270 0.0245 90 ]
Proper motions mas/yr : 		1.506 -8.545 [0.033 0.027 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -508.730988 [0.85746] / z(spectroscopic) -0.001696 [0.000003] / cz -508.30 [0.86]
   (NIR) A 2020AJ....160..120J
Parallaxes (mas): 		2.3932 [0.0301] A 2020yCat.1350....0G
Spectral type: 		B1.5Ve C 1997MNRAS.286..538D
Fluxes (8) :
U 15.57 [~] D 2003AJ....125.2531R
B 14.34 [~] E ~
V 12.31 [~] E ~
R 11.34 [~] E 2003yCat.1289....0Z
G 10.262384 [0.003813] C 2020yCat.1350....0G
J 6.127 [0.019] C 2003yCat.2246....0C
H 4.39 [0.21] D 2003yCat.2246....0C
K 3.04 [0.24] D 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 1345 Display criteria :

Identifiers (20) :
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GSC 05107-00494 GEN# +6.10120297 RAFGL 2165 [DMS2006] 12
ALS 19652 IRAS 18250-0351 SS73 164 [M82] 10
AP J18273952-0349520 JP11 5212 TIC 370168753 [VOE2005] 1
EM* MWC 297 2MASS J18273952-0349520 UCAC2 30568322 Gaia DR2 4257580091025232640
FMC 38 PDS 518 V* NZ Ser Gaia DR3 4257580091025232640

References (315 between 1850 and 2026) (Total 315)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 3    Var : 1    Fe/H : 3    Plx : 2    PM : 2    SpT : 6   

   

Observing logs
ISO : 3   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : EM* MWC 297

Link by name to the catalogue in VizieR :

GSC 05107-00494 ALS 19652 AP J18273952-0349520 IRAS 18250-0351 2MASS J18273952-0349520
RAFGL 2165 UCAC2 30568322 V* NZ Ser Gaia DR2 4257580091025232640 Gaia DR3 4257580091025232640

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