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Proposal Identification No.:

A2935 Arecibo Observatory

Date Received: 2015-Aug-31 21:58:53 William E. Gordon Telescope Observing Time Request COVER SHEET

Section I - General Information
Submitted for Sep 1 2015. This proposal has been submitted before. The previous proposal number is A2935. Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester: Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time: Expected Data Storage: Prop osal Title: Regular Astronomy Spectroscopy Extragalactic 50 35 90 min less than 100 GB

A Systematic study on HI properties of nearby galaxies hosting intermediate-mass

black holes
ABSTRACT: We propose to obtain systematic HI observations for a new, uniformly selected sample of Seyfert 1 galaxies hosting intermediate-mass black holes (IMBHs; MBH = 103-6 M ) at z <=0.1. IMBHs at the center of present-day galaxies provide crucial links in understanding the formation of 'seed' BHs and the co-evolution of supermassive BHs and galaxies. Based on the proposed Arecibo observation and existing multiwavelength data, we will study the properties of the neutral gas in the host galaxies, and the possible correlations between the gas properties and the fueling mode of the IMBHs in red spheroidal and blue disk galaxies. The feasibility of this project has been demostrated by the observation during the 2015A semester. Here we request time to complete the rest of the project. Outreach Abstract: We propose to obtain systematic HI observations for a new, uniformly selected sample of Seyfert 1 galaxies hosting intermediate-mass black holes (IMBHs). IMBHs at the center of present-day galaxies provide crucial links in understanding the formation of 'seed' BHs and the co-evolution of supermassive BHs and galaxies. Based on the proposed Arecibo observation and existing multiwavelength data, we will study the properties of the neutral gas in the host galaxies, and the possible correlations between the gas properties and the fueling mode of the IMBHs in red spheroidal and blue disk galaxies.

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Name Lei Qian

Xiaobo Dong

Institution National Astronomical Observatories, CAS Yunnan Observatory, CAS

E-mail lqian@nao.cas.cn

Phone +86-1064863369 +86-87163920209

Student no

xbdong@ynao.ac.cn

no

Additional Authors
Di Li, dili@nao.cas.cn Zhichen Pan, panzc@nao.cas.cn, graduate student

This work is not part of a thesis.

Remote Observing Request

Observer will travel to AO X Remote Observing In Absentia (instructions to operator)

Section I I - Time Request
The following times are in LST. For these observations night-time is required.

Begin ­ End Interval­Interval 7 11 ­ ­ ­ ­ 11 16

Days Needed at This Interval 6 8

Time Constraints (Must Be Justified in the Prop osal Text)

Section I I I - Instruments Needed
L-wide 2


Atmospheric Observation Instruments:

Sp ecial Equipment or setup:

none

Section IV - RFI Considerations Frequency Ranges Planned
1290 - 1420 This proposal requires coordination with Punta Salinas radar within the band 1222-1381 MHz.. This proposal requires coordination with GPS L3 at 1381 MHz.

Section V - Observing List Target List

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