Time-variable complex metal absorption lines in the quasar HS1603+3820

Toru Misawa, Michael Eracleous, Jane Camilla Charlton, Akito Tajitsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present five spectra of the quasar HS1603+3820 (zem=2.542) taken over intervals of 0.2-1.6 years (0.7-5.4 months in the quasar rest frame) with the High Dispersion Spectrograph on the Subaru telescope, for the purpose of studying its intrinsic narrow absorption lines (NALs). This quasar shows a rich complex of C IV NALs near the emission redshift (dN/dz ∼ 12). We perform time variability analysis as well as covering factor analysis to separate intrinsic NALs, which are physically related to the quasar, from intervening NALs in 8 C IV systems. Only one of them, at zabs ∼ 2.43, shows both partial coverage and large variation in line strength, width, and position. Assuming that a change in the ionization state of the absorber causes the variability, a lower limit can be placed on the electron density (ne > 3.2 × 104 cm-3) and an upper limit on the distance from the continuum source (r < 6 kpc). On the other hand, if motion of clumpy gas causes the variability, the crossing velocity and the distance from the continuum source are estimated to be νcross > 8,000 km s-1 and r < 3 pc, assuming that the observed shift velocity does not exceed the escape velocity at that radius. If we adopt the dynamical model of Murray et al. (1995), we can obtain a much more strict constraint on the radius of the gas parcel, r < 0.2 pc. We are planning to monitor this quasar for several years so as to use intrinsic absorber's behavior as a direct check of wind models.

Original languageEnglish (US)
Title of host publicationORIGIN OF MATTER AND EVOLUTION OF GALAXIES
Subtitle of host publicationInternational Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
Pages433-435
Number of pages3
DOIs
StatePublished - Dec 1 2006
EventORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology - Tokyo, Japan
Duration: Nov 8 2005Nov 11 2005

Publication series

NameAIP Conference Proceedings
Volume847
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology
CountryJapan
CityTokyo
Period11/8/0511/11/05

Fingerprint

complex variables
quasars
metals
absorbers
high dispersion spectrographs
escape velocity
factor analysis
radii
planning
coverings
telescopes
continuums
intervals
ionization
causes
shift
gases

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Misawa, T., Eracleous, M., Charlton, J. C., & Tajitsu, A. (2006). Time-variable complex metal absorption lines in the quasar HS1603+3820. In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology (pp. 433-435). (AIP Conference Proceedings; Vol. 847). https://doi.org/10.1063/1.2234449
Misawa, Toru ; Eracleous, Michael ; Charlton, Jane Camilla ; Tajitsu, Akito. / Time-variable complex metal absorption lines in the quasar HS1603+3820. ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology. 2006. pp. 433-435 (AIP Conference Proceedings).
@inproceedings{af61c7e93218460385a1039f163c7e2c,
title = "Time-variable complex metal absorption lines in the quasar HS1603+3820",
abstract = "We present five spectra of the quasar HS1603+3820 (zem=2.542) taken over intervals of 0.2-1.6 years (0.7-5.4 months in the quasar rest frame) with the High Dispersion Spectrograph on the Subaru telescope, for the purpose of studying its intrinsic narrow absorption lines (NALs). This quasar shows a rich complex of C IV NALs near the emission redshift (dN/dz ∼ 12). We perform time variability analysis as well as covering factor analysis to separate intrinsic NALs, which are physically related to the quasar, from intervening NALs in 8 C IV systems. Only one of them, at zabs ∼ 2.43, shows both partial coverage and large variation in line strength, width, and position. Assuming that a change in the ionization state of the absorber causes the variability, a lower limit can be placed on the electron density (ne > 3.2 × 104 cm-3) and an upper limit on the distance from the continuum source (r < 6 kpc). On the other hand, if motion of clumpy gas causes the variability, the crossing velocity and the distance from the continuum source are estimated to be νcross > 8,000 km s-1 and r < 3 pc, assuming that the observed shift velocity does not exceed the escape velocity at that radius. If we adopt the dynamical model of Murray et al. (1995), we can obtain a much more strict constraint on the radius of the gas parcel, r < 0.2 pc. We are planning to monitor this quasar for several years so as to use intrinsic absorber's behavior as a direct check of wind models.",
author = "Toru Misawa and Michael Eracleous and Charlton, {Jane Camilla} and Akito Tajitsu",
year = "2006",
month = "12",
day = "1",
doi = "10.1063/1.2234449",
language = "English (US)",
isbn = "0735403422",
series = "AIP Conference Proceedings",
pages = "433--435",
booktitle = "ORIGIN OF MATTER AND EVOLUTION OF GALAXIES",

}

Misawa, T, Eracleous, M, Charlton, JC & Tajitsu, A 2006, Time-variable complex metal absorption lines in the quasar HS1603+3820. in ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology. AIP Conference Proceedings, vol. 847, pp. 433-435, ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology, Tokyo, Japan, 11/8/05. https://doi.org/10.1063/1.2234449

Time-variable complex metal absorption lines in the quasar HS1603+3820. / Misawa, Toru; Eracleous, Michael; Charlton, Jane Camilla; Tajitsu, Akito.

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology. 2006. p. 433-435 (AIP Conference Proceedings; Vol. 847).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - Time-variable complex metal absorption lines in the quasar HS1603+3820

AU - Misawa, Toru

AU - Eracleous, Michael

AU - Charlton, Jane Camilla

AU - Tajitsu, Akito

PY - 2006/12/1

Y1 - 2006/12/1

N2 - We present five spectra of the quasar HS1603+3820 (zem=2.542) taken over intervals of 0.2-1.6 years (0.7-5.4 months in the quasar rest frame) with the High Dispersion Spectrograph on the Subaru telescope, for the purpose of studying its intrinsic narrow absorption lines (NALs). This quasar shows a rich complex of C IV NALs near the emission redshift (dN/dz ∼ 12). We perform time variability analysis as well as covering factor analysis to separate intrinsic NALs, which are physically related to the quasar, from intervening NALs in 8 C IV systems. Only one of them, at zabs ∼ 2.43, shows both partial coverage and large variation in line strength, width, and position. Assuming that a change in the ionization state of the absorber causes the variability, a lower limit can be placed on the electron density (ne > 3.2 × 104 cm-3) and an upper limit on the distance from the continuum source (r < 6 kpc). On the other hand, if motion of clumpy gas causes the variability, the crossing velocity and the distance from the continuum source are estimated to be νcross > 8,000 km s-1 and r < 3 pc, assuming that the observed shift velocity does not exceed the escape velocity at that radius. If we adopt the dynamical model of Murray et al. (1995), we can obtain a much more strict constraint on the radius of the gas parcel, r < 0.2 pc. We are planning to monitor this quasar for several years so as to use intrinsic absorber's behavior as a direct check of wind models.

AB - We present five spectra of the quasar HS1603+3820 (zem=2.542) taken over intervals of 0.2-1.6 years (0.7-5.4 months in the quasar rest frame) with the High Dispersion Spectrograph on the Subaru telescope, for the purpose of studying its intrinsic narrow absorption lines (NALs). This quasar shows a rich complex of C IV NALs near the emission redshift (dN/dz ∼ 12). We perform time variability analysis as well as covering factor analysis to separate intrinsic NALs, which are physically related to the quasar, from intervening NALs in 8 C IV systems. Only one of them, at zabs ∼ 2.43, shows both partial coverage and large variation in line strength, width, and position. Assuming that a change in the ionization state of the absorber causes the variability, a lower limit can be placed on the electron density (ne > 3.2 × 104 cm-3) and an upper limit on the distance from the continuum source (r < 6 kpc). On the other hand, if motion of clumpy gas causes the variability, the crossing velocity and the distance from the continuum source are estimated to be νcross > 8,000 km s-1 and r < 3 pc, assuming that the observed shift velocity does not exceed the escape velocity at that radius. If we adopt the dynamical model of Murray et al. (1995), we can obtain a much more strict constraint on the radius of the gas parcel, r < 0.2 pc. We are planning to monitor this quasar for several years so as to use intrinsic absorber's behavior as a direct check of wind models.

UR - http://www.scopus.com/inward/record.url?scp=33846340015&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33846340015&partnerID=8YFLogxK

U2 - 10.1063/1.2234449

DO - 10.1063/1.2234449

M3 - Conference contribution

SN - 0735403422

SN - 9780735403420

T3 - AIP Conference Proceedings

SP - 433

EP - 435

BT - ORIGIN OF MATTER AND EVOLUTION OF GALAXIES

ER -

Misawa T, Eracleous M, Charlton JC, Tajitsu A. Time-variable complex metal absorption lines in the quasar HS1603+3820. In ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Horizon of Nuclear Astrophysics and Cosmology. 2006. p. 433-435. (AIP Conference Proceedings). https://doi.org/10.1063/1.2234449