Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars

Rajib Ganguly, Michael S. Brotherton, Nahum Arav, Sara R. Heap, Lutz Wisotzki, Thomas L. Aldcroft, Danielle Alloin, Ehud Behar, Gabriela Canalizo, D. Michael Crenshaw, Martijn De Kool, Kenneth Chambers, Gerald Cecil, Eleni Chatzichristou, John Evererr, Jack Gabel, C. Martin Gaskell, Emmanuel Galliano, Richard F. Green, Patrick B. HallDean C. Hines, Vesa T. Junkkarinen, Jelle S. Kaastra, Mary Elizabeth Kaiser, Demosthenes Kazanas, Arieh Konigl, Kirk T. Korista, Gerard A. Kriss, Ari Laor, Karen M. Leighly, Smita Mathur, Patrick Ogle, Daniel Proga, Bassem Sabra, Ran Sivron, Stephanie Snedden, Randal Telfer, Marianne Vestergaard

Research output: Contribution to journalArticle

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Abstract

We present low-resolution ultraviolet spectra of 14 low-redshift (z em ≲ 0.8) quasars observed with the Hubble Space Telescope STIS as part of a Snapshot project to understand the relationship between quasar outflows and luminosity. By design, all observations cover the C IV emission line. Ten of the quasars are from the Hamburg-ESO catalog, three are from the Palomar-Green catalog, and one is from the Parkes catalog. The sample contains a few interesting quasars, including two broad absorption line (BAL) quasars (HE 0143-3535 and HE 0436-2614), one quasar with a mini-BAL (HE 1105-0746), and one quasar with associated narrow absorption (HE 0409-5004). These BAL quasars are among the brightest known (although not the most luminous) since they lie at zem <0.8. We compare the properties of these BAL quasars to the zem <0.5 Palomar-Green and zem > 1-4 Large Bright Quasar Survey samples. By design, our objects sample luminosities in between these two surveys, and our four absorbed objects are consistent with the v ∼ L0.62 relation derived by Laor & Brandt (2002). Another quasar, HE 0441-2826, contains extremely weak emission lines, and our spectrum is consistent with a simple power-law continuum. The quasar is radio-loud but has a steep spectral index and a lobe-dominated morphology, which argues against it being a blazar. The unusual spectrum of this quasar resembles the spectra of the quasars PG 1407+265, SDSS J1136+0242, and PKS 1004+13, for which several possible explanations have been entertained.

Original languageEnglish
Pages (from-to)479-486
Number of pages8
JournalAstronomical Journal
Volume133
Issue number2
DOIs
StatePublished - Feb 2007
Externally publishedYes

Fingerprint

ultraviolet spectroscopy
Hubble Space Telescope
quasars
spectroscopy
catalogs
power law
outflow
radio
luminosity
ultraviolet spectra
European Southern Observatory
lobes

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Ganguly, R., Brotherton, M. S., Arav, N., Heap, S. R., Wisotzki, L., Aldcroft, T. L., ... Vestergaard, M. (2007). Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars. Astronomical Journal, 133(2), 479-486. https://doi.org/10.1086/510129

Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars. / Ganguly, Rajib; Brotherton, Michael S.; Arav, Nahum; Heap, Sara R.; Wisotzki, Lutz; Aldcroft, Thomas L.; Alloin, Danielle; Behar, Ehud; Canalizo, Gabriela; Michael Crenshaw, D.; De Kool, Martijn; Chambers, Kenneth; Cecil, Gerald; Chatzichristou, Eleni; Evererr, John; Gabel, Jack; Martin Gaskell, C.; Galliano, Emmanuel; Green, Richard F.; Hall, Patrick B.; Hines, Dean C.; Junkkarinen, Vesa T.; Kaastra, Jelle S.; Kaiser, Mary Elizabeth; Kazanas, Demosthenes; Konigl, Arieh; Korista, Kirk T.; Kriss, Gerard A.; Laor, Ari; Leighly, Karen M.; Mathur, Smita; Ogle, Patrick; Proga, Daniel; Sabra, Bassem; Sivron, Ran; Snedden, Stephanie; Telfer, Randal; Vestergaard, Marianne.

In: Astronomical Journal, Vol. 133, No. 2, 02.2007, p. 479-486.

Research output: Contribution to journalArticle

Ganguly, R, Brotherton, MS, Arav, N, Heap, SR, Wisotzki, L, Aldcroft, TL, Alloin, D, Behar, E, Canalizo, G, Michael Crenshaw, D, De Kool, M, Chambers, K, Cecil, G, Chatzichristou, E, Evererr, J, Gabel, J, Martin Gaskell, C, Galliano, E, Green, RF, Hall, PB, Hines, DC, Junkkarinen, VT, Kaastra, JS, Kaiser, ME, Kazanas, D, Konigl, A, Korista, KT, Kriss, GA, Laor, A, Leighly, KM, Mathur, S, Ogle, P, Proga, D, Sabra, B, Sivron, R, Snedden, S, Telfer, R & Vestergaard, M 2007, 'Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars', Astronomical Journal, vol. 133, no. 2, pp. 479-486. https://doi.org/10.1086/510129
Ganguly R, Brotherton MS, Arav N, Heap SR, Wisotzki L, Aldcroft TL et al. Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars. Astronomical Journal. 2007 Feb;133(2):479-486. https://doi.org/10.1086/510129
Ganguly, Rajib ; Brotherton, Michael S. ; Arav, Nahum ; Heap, Sara R. ; Wisotzki, Lutz ; Aldcroft, Thomas L. ; Alloin, Danielle ; Behar, Ehud ; Canalizo, Gabriela ; Michael Crenshaw, D. ; De Kool, Martijn ; Chambers, Kenneth ; Cecil, Gerald ; Chatzichristou, Eleni ; Evererr, John ; Gabel, Jack ; Martin Gaskell, C. ; Galliano, Emmanuel ; Green, Richard F. ; Hall, Patrick B. ; Hines, Dean C. ; Junkkarinen, Vesa T. ; Kaastra, Jelle S. ; Kaiser, Mary Elizabeth ; Kazanas, Demosthenes ; Konigl, Arieh ; Korista, Kirk T. ; Kriss, Gerard A. ; Laor, Ari ; Leighly, Karen M. ; Mathur, Smita ; Ogle, Patrick ; Proga, Daniel ; Sabra, Bassem ; Sivron, Ran ; Snedden, Stephanie ; Telfer, Randal ; Vestergaard, Marianne. / Hubble space telescope ultraviolet spectroscopy of 14 low-redshift quasars. In: Astronomical Journal. 2007 ; Vol. 133, No. 2. pp. 479-486.
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abstract = "We present low-resolution ultraviolet spectra of 14 low-redshift (z em ≲ 0.8) quasars observed with the Hubble Space Telescope STIS as part of a Snapshot project to understand the relationship between quasar outflows and luminosity. By design, all observations cover the C IV emission line. Ten of the quasars are from the Hamburg-ESO catalog, three are from the Palomar-Green catalog, and one is from the Parkes catalog. The sample contains a few interesting quasars, including two broad absorption line (BAL) quasars (HE 0143-3535 and HE 0436-2614), one quasar with a mini-BAL (HE 1105-0746), and one quasar with associated narrow absorption (HE 0409-5004). These BAL quasars are among the brightest known (although not the most luminous) since they lie at zem <0.8. We compare the properties of these BAL quasars to the zem <0.5 Palomar-Green and zem > 1-4 Large Bright Quasar Survey samples. By design, our objects sample luminosities in between these two surveys, and our four absorbed objects are consistent with the v ∼ L0.62 relation derived by Laor & Brandt (2002). Another quasar, HE 0441-2826, contains extremely weak emission lines, and our spectrum is consistent with a simple power-law continuum. The quasar is radio-loud but has a steep spectral index and a lobe-dominated morphology, which argues against it being a blazar. The unusual spectrum of this quasar resembles the spectra of the quasars PG 1407+265, SDSS J1136+0242, and PKS 1004+13, for which several possible explanations have been entertained.",
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AU - Brotherton, Michael S.

AU - Arav, Nahum

AU - Heap, Sara R.

AU - Wisotzki, Lutz

AU - Aldcroft, Thomas L.

AU - Alloin, Danielle

AU - Behar, Ehud

AU - Canalizo, Gabriela

AU - Michael Crenshaw, D.

AU - De Kool, Martijn

AU - Chambers, Kenneth

AU - Cecil, Gerald

AU - Chatzichristou, Eleni

AU - Evererr, John

AU - Gabel, Jack

AU - Martin Gaskell, C.

AU - Galliano, Emmanuel

AU - Green, Richard F.

AU - Hall, Patrick B.

AU - Hines, Dean C.

AU - Junkkarinen, Vesa T.

AU - Kaastra, Jelle S.

AU - Kaiser, Mary Elizabeth

AU - Kazanas, Demosthenes

AU - Konigl, Arieh

AU - Korista, Kirk T.

AU - Kriss, Gerard A.

AU - Laor, Ari

AU - Leighly, Karen M.

AU - Mathur, Smita

AU - Ogle, Patrick

AU - Proga, Daniel

AU - Sabra, Bassem

AU - Sivron, Ran

AU - Snedden, Stephanie

AU - Telfer, Randal

AU - Vestergaard, Marianne

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N2 - We present low-resolution ultraviolet spectra of 14 low-redshift (z em ≲ 0.8) quasars observed with the Hubble Space Telescope STIS as part of a Snapshot project to understand the relationship between quasar outflows and luminosity. By design, all observations cover the C IV emission line. Ten of the quasars are from the Hamburg-ESO catalog, three are from the Palomar-Green catalog, and one is from the Parkes catalog. The sample contains a few interesting quasars, including two broad absorption line (BAL) quasars (HE 0143-3535 and HE 0436-2614), one quasar with a mini-BAL (HE 1105-0746), and one quasar with associated narrow absorption (HE 0409-5004). These BAL quasars are among the brightest known (although not the most luminous) since they lie at zem <0.8. We compare the properties of these BAL quasars to the zem <0.5 Palomar-Green and zem > 1-4 Large Bright Quasar Survey samples. By design, our objects sample luminosities in between these two surveys, and our four absorbed objects are consistent with the v ∼ L0.62 relation derived by Laor & Brandt (2002). Another quasar, HE 0441-2826, contains extremely weak emission lines, and our spectrum is consistent with a simple power-law continuum. The quasar is radio-loud but has a steep spectral index and a lobe-dominated morphology, which argues against it being a blazar. The unusual spectrum of this quasar resembles the spectra of the quasars PG 1407+265, SDSS J1136+0242, and PKS 1004+13, for which several possible explanations have been entertained.

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