The Obscured Mid-Infrared Continuum of NGC 4418: A Dust- and Ice-Enshrouded AGN View Full Text


Ontology type: schema:Chapter      Open Access: True


Chapter Info

DATE

2001

AUTHORS

Henrik Spoon , Jacqueline Keane , Xander Tielens , Dieter Lutz , Alan Moorwood

ABSTRACT

We report the detection of absorption features in the 6–8 μm region superimposed on a featureless mid-infrared continuum in NGC 4418. For several of these features this is the first detection in an external galaxy. We compare the absorption spectrum of NGC 4418 to that of embedded massive protostars and the Galactic centre, and attribute the absorption features to ice grains and to hydrogenated amorphous carbon grains. From the depth of the ice features, the central source responsible for the mid-infrared emission must be deeply enshrouded. Combined with the small size of the mid-infrared source, only an AGN can be effectively hidden within the geometry at hand. More... »

PAGES

129-135

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/978-3-642-56538-0_17

DOI

http://dx.doi.org/10.1007/978-3-642-56538-0_17

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1030632614


Indexing Status Check whether this publication has been indexed by Scopus and Web Of Science using the SN Indexing Status Tool
Incoming Citations Browse incoming citations for this publication using opencitations.net

JSON-LD is the canonical representation for SciGraph data.

TIP: You can open this SciGraph record using an external JSON-LD service: JSON-LD Playground Google SDTT

[
  {
    "@context": "https://springernature.github.io/scigraph/jsonld/sgcontext.json", 
    "about": [
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/02", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "name": "Physical Sciences", 
        "type": "DefinedTerm"
      }, 
      {
        "id": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/0205", 
        "inDefinedTermSet": "http://purl.org/au-research/vocabulary/anzsrc-for/2008/", 
        "name": "Optical Physics", 
        "type": "DefinedTerm"
      }
    ], 
    "author": [
      {
        "affiliation": {
          "alternateName": "ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany", 
          "id": "http://www.grid.ac/institutes/grid.424907.c", 
          "name": [
            "ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Spoon", 
        "givenName": "Henrik", 
        "id": "sg:person.012132043777.99", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.012132043777.99"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands", 
          "id": "http://www.grid.ac/institutes/grid.4830.f", 
          "name": [
            "Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Keane", 
        "givenName": "Jacqueline", 
        "id": "sg:person.07701743445.07", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.07701743445.07"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands", 
          "id": "http://www.grid.ac/institutes/grid.4830.f", 
          "name": [
            "Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Tielens", 
        "givenName": "Xander", 
        "id": "sg:person.015146762717.22", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.015146762717.22"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "MPE, Postfach 1312, 85741, Garching, Germany", 
          "id": "http://www.grid.ac/institutes/grid.450265.0", 
          "name": [
            "MPE, Postfach 1312, 85741, Garching, Germany"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Lutz", 
        "givenName": "Dieter", 
        "id": "sg:person.016246670233.99", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.016246670233.99"
        ], 
        "type": "Person"
      }, 
      {
        "affiliation": {
          "alternateName": "ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany", 
          "id": "http://www.grid.ac/institutes/grid.424907.c", 
          "name": [
            "ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany"
          ], 
          "type": "Organization"
        }, 
        "familyName": "Moorwood", 
        "givenName": "Alan", 
        "id": "sg:person.014263376216.50", 
        "sameAs": [
          "https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.014263376216.50"
        ], 
        "type": "Person"
      }
    ], 
    "datePublished": "2001", 
    "datePublishedReg": "2001-01-01", 
    "description": "We report the detection of absorption features in the 6\u20138 \u03bcm region superimposed on a featureless mid-infrared continuum in NGC 4418. For several of these features this is the first detection in an external galaxy. We compare the absorption spectrum of NGC 4418 to that of embedded massive protostars and the Galactic centre, and attribute the absorption features to ice grains and to hydrogenated amorphous carbon grains. From the depth of the ice features, the central source responsible for the mid-infrared emission must be deeply enshrouded. Combined with the small size of the mid-infrared source, only an AGN can be effectively hidden within the geometry at hand.", 
    "editor": [
      {
        "familyName": "Tacconi", 
        "givenName": "Linda", 
        "type": "Person"
      }, 
      {
        "familyName": "Lutz", 
        "givenName": "Dieter", 
        "type": "Person"
      }
    ], 
    "genre": "chapter", 
    "id": "sg:pub.10.1007/978-3-642-56538-0_17", 
    "isAccessibleForFree": true, 
    "isPartOf": {
      "isbn": [
        "978-3-642-62562-6", 
        "978-3-642-56538-0"
      ], 
      "name": "Starburst Galaxies: Near and Far", 
      "type": "Book"
    }, 
    "keywords": [
      "mid-infrared continuum", 
      "NGC 4418", 
      "mid-infrared source", 
      "mid-infrared emission", 
      "external galaxies", 
      "Galactic center", 
      "massive protostars", 
      "amorphous carbon grains", 
      "absorption features", 
      "central source", 
      "absorption spectra", 
      "AGN", 
      "first detection", 
      "carbon grains", 
      "ice grains", 
      "galaxies", 
      "ice features", 
      "protostars", 
      "continuum", 
      "spectra", 
      "absorption", 
      "emission", 
      "dust", 
      "source", 
      "small size", 
      "geometry", 
      "grains", 
      "detection", 
      "features", 
      "region", 
      "depth", 
      "center", 
      "size", 
      "hand"
    ], 
    "name": "The Obscured Mid-Infrared Continuum of NGC 4418: A Dust- and Ice-Enshrouded AGN", 
    "pagination": "129-135", 
    "productId": [
      {
        "name": "dimensions_id", 
        "type": "PropertyValue", 
        "value": [
          "pub.1030632614"
        ]
      }, 
      {
        "name": "doi", 
        "type": "PropertyValue", 
        "value": [
          "10.1007/978-3-642-56538-0_17"
        ]
      }
    ], 
    "publisher": {
      "name": "Springer Nature", 
      "type": "Organisation"
    }, 
    "sameAs": [
      "https://doi.org/10.1007/978-3-642-56538-0_17", 
      "https://app.dimensions.ai/details/publication/pub.1030632614"
    ], 
    "sdDataset": "chapters", 
    "sdDatePublished": "2022-12-01T06:54", 
    "sdLicense": "https://scigraph.springernature.com/explorer/license/", 
    "sdPublisher": {
      "name": "Springer Nature - SN SciGraph project", 
      "type": "Organization"
    }, 
    "sdSource": "s3://com-springernature-scigraph/baseset/20221201/entities/gbq_results/chapter/chapter_472.jsonl", 
    "type": "Chapter", 
    "url": "https://doi.org/10.1007/978-3-642-56538-0_17"
  }
]
 

Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

JSON-LD is a popular format for linked data which is fully compatible with JSON.

curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/978-3-642-56538-0_17'

N-Triples is a line-based linked data format ideal for batch operations.

curl -H 'Accept: application/n-triples' 'https://scigraph.springernature.com/pub.10.1007/978-3-642-56538-0_17'

Turtle is a human-readable linked data format.

curl -H 'Accept: text/turtle' 'https://scigraph.springernature.com/pub.10.1007/978-3-642-56538-0_17'

RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/978-3-642-56538-0_17'


 

This table displays all metadata directly associated to this object as RDF triples.

132 TRIPLES      22 PREDICATES      59 URIs      52 LITERALS      7 BLANK NODES

Subject Predicate Object
1 sg:pub.10.1007/978-3-642-56538-0_17 schema:about anzsrc-for:02
2 anzsrc-for:0205
3 schema:author Nbc4c738d2e99418980bf2215790c325d
4 schema:datePublished 2001
5 schema:datePublishedReg 2001-01-01
6 schema:description We report the detection of absorption features in the 6–8 μm region superimposed on a featureless mid-infrared continuum in NGC 4418. For several of these features this is the first detection in an external galaxy. We compare the absorption spectrum of NGC 4418 to that of embedded massive protostars and the Galactic centre, and attribute the absorption features to ice grains and to hydrogenated amorphous carbon grains. From the depth of the ice features, the central source responsible for the mid-infrared emission must be deeply enshrouded. Combined with the small size of the mid-infrared source, only an AGN can be effectively hidden within the geometry at hand.
7 schema:editor N44379eeef2e6478f997b868dc7fee88f
8 schema:genre chapter
9 schema:isAccessibleForFree true
10 schema:isPartOf N54c5ae5e51da4b54bd2695a0b802f310
11 schema:keywords AGN
12 Galactic center
13 NGC 4418
14 absorption
15 absorption features
16 absorption spectra
17 amorphous carbon grains
18 carbon grains
19 center
20 central source
21 continuum
22 depth
23 detection
24 dust
25 emission
26 external galaxies
27 features
28 first detection
29 galaxies
30 geometry
31 grains
32 hand
33 ice features
34 ice grains
35 massive protostars
36 mid-infrared continuum
37 mid-infrared emission
38 mid-infrared source
39 protostars
40 region
41 size
42 small size
43 source
44 spectra
45 schema:name The Obscured Mid-Infrared Continuum of NGC 4418: A Dust- and Ice-Enshrouded AGN
46 schema:pagination 129-135
47 schema:productId N267b5cc4d950495a94382e9a0588b2d5
48 N51e4b9fda82340418a48faec88387a64
49 schema:publisher N260171975fda425e8807c9249bd4ca32
50 schema:sameAs https://app.dimensions.ai/details/publication/pub.1030632614
51 https://doi.org/10.1007/978-3-642-56538-0_17
52 schema:sdDatePublished 2022-12-01T06:54
53 schema:sdLicense https://scigraph.springernature.com/explorer/license/
54 schema:sdPublisher N4830c62fd732421dbd8277c5bae02350
55 schema:url https://doi.org/10.1007/978-3-642-56538-0_17
56 sgo:license sg:explorer/license/
57 sgo:sdDataset chapters
58 rdf:type schema:Chapter
59 N1869985c4908401e985fbe241b38240e rdf:first Nadf9b2e960d84e05ae1e960d8437bcc9
60 rdf:rest rdf:nil
61 N1dc8b32fa6644851aa9e4a551fe236e5 rdf:first sg:person.015146762717.22
62 rdf:rest N4c9d2e47125a42a384579eb24444d986
63 N260171975fda425e8807c9249bd4ca32 schema:name Springer Nature
64 rdf:type schema:Organisation
65 N267b5cc4d950495a94382e9a0588b2d5 schema:name dimensions_id
66 schema:value pub.1030632614
67 rdf:type schema:PropertyValue
68 N44379eeef2e6478f997b868dc7fee88f rdf:first Nfad7c15d80d84b06a37a150e7ed71ddd
69 rdf:rest N1869985c4908401e985fbe241b38240e
70 N4830c62fd732421dbd8277c5bae02350 schema:name Springer Nature - SN SciGraph project
71 rdf:type schema:Organization
72 N4c9d2e47125a42a384579eb24444d986 rdf:first sg:person.016246670233.99
73 rdf:rest Nd2ba8f43c1ec46f8b483d2ebc1c57593
74 N51e4b9fda82340418a48faec88387a64 schema:name doi
75 schema:value 10.1007/978-3-642-56538-0_17
76 rdf:type schema:PropertyValue
77 N54c5ae5e51da4b54bd2695a0b802f310 schema:isbn 978-3-642-56538-0
78 978-3-642-62562-6
79 schema:name Starburst Galaxies: Near and Far
80 rdf:type schema:Book
81 N77163bbe4180496cbf203094af103650 rdf:first sg:person.07701743445.07
82 rdf:rest N1dc8b32fa6644851aa9e4a551fe236e5
83 Nadf9b2e960d84e05ae1e960d8437bcc9 schema:familyName Lutz
84 schema:givenName Dieter
85 rdf:type schema:Person
86 Nbc4c738d2e99418980bf2215790c325d rdf:first sg:person.012132043777.99
87 rdf:rest N77163bbe4180496cbf203094af103650
88 Nd2ba8f43c1ec46f8b483d2ebc1c57593 rdf:first sg:person.014263376216.50
89 rdf:rest rdf:nil
90 Nfad7c15d80d84b06a37a150e7ed71ddd schema:familyName Tacconi
91 schema:givenName Linda
92 rdf:type schema:Person
93 anzsrc-for:02 schema:inDefinedTermSet anzsrc-for:
94 schema:name Physical Sciences
95 rdf:type schema:DefinedTerm
96 anzsrc-for:0205 schema:inDefinedTermSet anzsrc-for:
97 schema:name Optical Physics
98 rdf:type schema:DefinedTerm
99 sg:person.012132043777.99 schema:affiliation grid-institutes:grid.424907.c
100 schema:familyName Spoon
101 schema:givenName Henrik
102 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.012132043777.99
103 rdf:type schema:Person
104 sg:person.014263376216.50 schema:affiliation grid-institutes:grid.424907.c
105 schema:familyName Moorwood
106 schema:givenName Alan
107 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.014263376216.50
108 rdf:type schema:Person
109 sg:person.015146762717.22 schema:affiliation grid-institutes:grid.4830.f
110 schema:familyName Tielens
111 schema:givenName Xander
112 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.015146762717.22
113 rdf:type schema:Person
114 sg:person.016246670233.99 schema:affiliation grid-institutes:grid.450265.0
115 schema:familyName Lutz
116 schema:givenName Dieter
117 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.016246670233.99
118 rdf:type schema:Person
119 sg:person.07701743445.07 schema:affiliation grid-institutes:grid.4830.f
120 schema:familyName Keane
121 schema:givenName Jacqueline
122 schema:sameAs https://app.dimensions.ai/discover/publication?and_facet_researcher=ur.07701743445.07
123 rdf:type schema:Person
124 grid-institutes:grid.424907.c schema:alternateName ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany
125 schema:name ESO, Karl-Schwarzschild-Strasse 2, 85748, Garching, Germany
126 rdf:type schema:Organization
127 grid-institutes:grid.450265.0 schema:alternateName MPE, Postfach 1312, 85741, Garching, Germany
128 schema:name MPE, Postfach 1312, 85741, Garching, Germany
129 rdf:type schema:Organization
130 grid-institutes:grid.4830.f schema:alternateName Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands
131 schema:name Kapteyn Astronomical Institute, Pb. 800, 9700 AV, Groningen, The Netherlands
132 rdf:type schema:Organization
 




Preview window. Press ESC to close (or click here)


...